Dynamic information storage or retrieval inventions 12/05

20050286351 - Stable disc controller id from unstable comparator outputs: A method for generating a root key is described. Stable bits of a plurality of comparator outputs are identified. The root key is selected from a number of the identified stable bits. A statistically unique value is calculated from the root key using a cryptographically secure function. An identifier of...

20050286352 - Lens driving unit: In a lens driving unit, when a first lens group holder 10 has received an impact from external in a use state in which first, second lens group holders 10, 11 are projecting, the first lens group holder 10 and the first nut 16 are released from their coupling by...

20050286353 - Optical disc apparatus: The present invention provides an optical disc apparatus including a clock generator means which is not affected by an unsteady wobble signal generated immediately after starting recording but follows the wobble signal even when decentering, etc. occur. The optical disc apparatus of the present invention includes (i) an amplification head...

20050286354 - Optical pick-up device: For providing an optical pick-up device, in which can prevent sound noise, the optical pick-up device includes a moving base, actuator assembly, an elastic rod and a buffer sheet. The moving base can move freely in a radial direction of an optical disk. The actuator assembly mounted on the moving...

20050286356 - Optical pickup actuator: Provided is an optical pickup actuator. The optical pickup actuator includes: a lens holder for holding an object lens; a focusing coil disposed at the lens holder; a tracking coil disposed at the lens holder; a radial coil wound at a coil holder at which the focusing coil is wound;...

20050286355 - Optical pickup, apparatus and method for assembling lens: An optical pickup and a lens assembling apparatus and a method thereof are provided. The optical pickup includes a plurality of objective lenses and a lens holder. The lens holder has a plurality of installation holes into which the plurality of objective lenses are inserted. In the lens holder, a...

20050286357 - Optical recording/reproducing apparatus, medium, and method and controlling apparatus, medium, and method therefor: An optical recording/reproducing apparatus, medium, and method and a controlling apparatus, medium, and method thereof. The recording/reproducing apparatus includes an optical pickup actuator including a holder formed on a base, a blade connected to the holder with a plurality of elastic supporters, a pair of focus coils for operating the...

20050286358 - Optical disk device and optical disk processing method: An optical disk device of the invention comprises a pickup which obtains a reading signal by irradiating an optical disk having plural recording layers with laser beam, a generating unit which generates a focus error signal from the reading signal, a control unit which focuses the laser beam based on...

20050286359 - Disc device: First and second optical heads (3A, 3B) are disposed on the same side with respect to a plane including a disk surface. Then, a media tray (19) on which a disk is mounted is moved within a plane substantially parallel with the disk surface. Using two optical heads (3A, 3B)...

20050286360 - Optical head, optical drive apparatus, and method for generating tracking error signal: An optical head includes a laser light source, an optical system that applies 0-order diffracted light, +1-order diffracted light, and −1-order diffracted light, which are produced from laser light emitted from the laser light source, onto a recording medium having a plurality of information recording layers, and a light-receiving device...

20050286362 - Disc reproduction apparatus capable of digest reproduction: A disc reproduction apparatus reading and reproducing data containing a plurality of chapters recorded on a disc-like recording medium includes an input unit for accepting an input of an instruction from a user and a control unit for controlling a reproduction operation in accordance with the instruction accepted through the...

20050286361 - Information processing device and program: The present invention relates to an information processing apparatus adapted to execute a sequence of processing operations for recording video data recorded to a first recording medium in a first format to a second recording medium in a second format, without user's manual intervention. Any one of three settings is...

20050286364 - Optical disc having plurality of recording layers, and method and apparatus for recording data thereon: Provided are an optical disc having a plurality of recording layers, and a method and apparatus for recording data thereon. The optical disc has a plurality of recording layers, each recording layer including: a data area; a connecting area; and a remaining area. The data, connecting, and remaining areas are...

20050286363 - Optical recording and/or reproducing apparatus for automatically making copy of optical disc and method thereof: An optical recording and/or reproducing method, and an apparatus to perform the method, the method including reading data from an original optical disc, recording the data on another recording medium, and reading the data on the other recording medium to record the data onto one or more target optical discs,...

20050286367 - Method for recording and reproducing data and apparatus for the same: In a method of carrying out a recording operation and a reproducing operation to a data record medium, the data record medium contains a data area, and a system area containing at least one of record control data areas, in each of which record control data for user data recorded...

20050286368 - Method and apparatus for overwriting data on recording-medium and the recording medium: In an embodiment of the method of over-writing a recording medium, if data for writing on the recording medium is to be written on a recorded portion of a user data area of the recording medium, an unrecorded portion of the recording medium is selected as a replacement portion for...

20050286369 - Burst cutting area code extraction method and related device: A method for extracting information in a data signal read from an area of an optical disc being recorded by a laser cutting process performed after the fabrication of the optical disc includes providing a first clock signal; sampling the data signal according to the first clock signal to thereby...

20050286370 - Disk apparatus, information recording and reproducing method, and disk rotation speed control method: A disk apparatus is provided capable of reducing the change in the rotational speed of the disk during a (block) replacement process and thereby ensuring that each (block) replacement operation can be quickly initiated. In a (block) replacement process, the disk apparatus determines whether the rotational speed of the disk...

20050286371 - Disk drive apparatus: A disk drive apparatus drives, by means of a motor, a disk mounted thereon so as to reproduce signals recorded in the disk. The disk drive apparatus has an edge detecting unit for generating an edge signal XEG indicating a timing of phase switching, in accordance with a plurality of...

20050286372 - Optical recording method and apparatus with different recording rates: An optical recording method and apparatus with different recording rates are provided for effectively increasing the average recording rate. The optical recording method includes the steps of: controlling a recording rate with a constant linear velocity (CLV) control mode; recording data; judging whether the recording rate has to be increased...

20050286365 - Initial setting of power of radiation beam for reproducing data recorded on optical information medium: The present invention provides a method for initially setting a power of a radiation beam for reproducing data recorded on an optical information medium. The method, according to the invention, can be applied in an optical information reproducing apparatus to resolve the problems resulting from a decayed optical pick-up unit...

20050286366 - Optical disk apparatus and control program for the same: The program is capable of writing data in optical disks with absolutely optimum set values. In the program, a command sending function performs the steps of sending commands to make an optical disk apparatus read data from an optical disk; measuring pulse widths of high level sections and low level...

20050286373 - Information processing device, disc unit, information processing method, information processing program and recording medium containing the program: The number of subcodes n1 and n2 at different positions in the radial direction of an optical disc 10 which is rotated under the constant linear velocity control and distances r1 and r2 between the positions and the center of the optical disc 10 are recognized. Based on the number...

20050286374 - Optical disc device and recording medium: Provided is an optical disc device capable of smoothly and adequately setting laser power even when an outgoing wavelength is shifted. A wavelength compensation table for associating a laser wavelength with a compensation factor is recorded in advance in a disc using a wobble, a pit, or the like. When...

20050286376 - Optical pickup for detecting thickness variation of a recording medium, and/or compensating for spherical aberration caused by thickness variation of a recording medium: An optical pickup for a recording medium includes a light beam division and detection unit including receiving portions dividing an incident light beam reflected on the recording medium into a first light beam portion and a second light beam portion around the first light beam portion and converting the first...

20050286375 - System and program for evaluating optical disk apparatus: The system is capable of easily evaluating quality of recorded data by detecting intersymbol interference of written data. The optical disk apparatus comprises: a unit for measuring pulse widths of high level sections and low level sections in a plurality of parts of a binarized RF signal in chronological order;...

20050286378 - Data writing method: A data writing method is used with an optical recording apparatus to write data into a rewritable disc. For writing data, the optical recording apparatus enters a writing mode and a first packet is written into the rewritable disc. Then, the optical recording apparatus enters a detecting mode and data...

20050286377 - Record carrier having a main file system area and a virtual file system area: The present invention relates to a recordable record carrier having a user area (UA) for storing user data and a management area (MA) for storing management data. The invention further relates to a recording apparatus for recording information on such a record carrier and a corresponding recording method. In some...

20050286379 - System, method, and computer program for verifying data on information recording medium: The present invention relates to a system for verifying data recorded on an information recording medium. The system includes a data reproduction unit for reproducing data recorded on an information recording medium, a reproduction-verification-data generation unit for executing a calculation based on the data reproduced by the data reproduction unit...

20050286380 - Digital adaptive hysteresis system: An adaptive digital hysteresis technique where two modes are used to develop the output value, rather than the conventional single rounding technique, to reduce the quantization errors. To determine which of two different schemes, referred to as floor and ceil, to use, there are trip points to select modes. The...

20050286382 - Optical disk apparatus and control program for the same: The program is capable of writing data in optical disks with absolutely optimum set values. In the program, a command sending function performs the steps of sending commands to make an optical disk apparatus read data from an optical disk; measuring pulse widths of high level sections and low level...

20050286381 - Optical disk apparatus, system for evaluating optical disk apparatus, and program for evaluating the same: The optical disk apparatus is capable of easily evaluating quality of recorded data. The optical disk apparatus capable of writing data in an optical disk comprises: an optical pick-up irradiating an laser beam toward the optical disk and receiving a reflected laser beam reflected from the optical disk; an RF...

20050286383 - Method of recording data on optical recording media and optical recording device: A method of recording data on a double-layer optical recording medium having a recording layer with high light transmittance is provided. A laser beam is modulated to emit a pulse series of laser including a write pulse of a write power and a cooling pulse of a bottom power, so...

20050286384 - Music selection apparatus, music selection system and music selection method: A music selection apparatus selects a piece of music from among pieces of selection target music to be selected. The music selection apparatus includes a condition setting section and a selecting section. The condition setting section sets as a selection condition one selected by a user from among pieces of...

20050286385 - Optical element, optical head, optical recording reproducing apparatus and optical recording/ reproducing method: The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a...

20050286386 - Dichroic coating for holographic data storage media: The invention provides a dichroic coating for holographic media. The dichroic coating is substantially non-reflective of light at a first wavelength and substantially reflective of light at a second wavelength. A holographic recording material of the medium can be formulated to be sensitive to the first wavelength of light, but...

20050286387 - Method and system for equalizing holographic data pages: Methods and systems for equalizing a holographic image page and for compensating nonlinearity of a holographic data storage channel are disclosed. In one embodiment, a method for equalizing a holographic image page includes receiving the holographic image page and dividing the holographic image page into a plurality of local image...

20050286388 - Processing data pixels in a holographic data storage system: A method for processing data pixels in a holographic data storage system is disclosed. The method includes assigning predetermined reserved blocks throughout each data page, where each reserved block comprises known pixel patterns, determining position errors of the data page by computing the best match between regions of the data...

20050286389 - Optical scanning device with tilt detection: This invention relates to an optical scanning device for scanning an optical record carrier and detecting a tilt characteristic of the optical record carrier during scanning. The device includes a redirecting structure (26) arranged on an objective lens (10) to redirect a part of a radiation beam, when travelling towards...

20050286390 - Recording method and optical disk device: In order that it is realized to put 16× speed DVD-RAM in practice, a recording method coping with CAV (constant angular velocity) and a method for improving S/N ratio are provided and an optical disk device using them is provided. In order that a cutoff phenomenon of pulse in a...

20050286391 - Method and apparatus for focused beam processing of recording media: Embodiments of the invention generally provide a light source substrate processing system. In one embodiment, the present invention provides a spindle motor coupled to a substrate support member. A light source assembly is supported above a substrate disposed on the substrate support member. In another embodiment, the light source assembly...

20050286393 - Optical array with beam alignment feature: An array of optical elements for processing a spatially dispersed optical beam including monitoring optical elements for determining the position of the optical beam in the array is disclosed. The monitoring optical elements have a width that varies in ay direction normal to the array axis, enabling the determination of...

20050286392 - Semiconductor laser driver, optical head device, optical information processor, and optical record medium: In order to make it possible to reproduce information recorded on an optical recording medium without causing deterioration in the information, a semiconductor laser driving device includes: a semiconductor laser; a photodetecting element for receiving a part of light emitted from the semiconductor laser and converting the part of light...

20050286394 - Means for limiting an output signal of an amplifier stage: An electronic circuit is provided which can autonomously handle an input current (Ii) having a relatively wide dynamic range without being overdriven. The electronic circuit comprises an amplifier stage (AMPST) having an input (IP) for receiving the input current (Ii) and an output (OP) for supplying an output current (Io),...

20050286395 - Data recording device comprising microtips and a recording medium: The invention relates to a data recording device comprising microtips and a recording medium. The recording medium comprises a substrate with a preferably-carbon resistive layer disposed thereon, said resistive layer being covered with an active layer. According to the invention, the aforementioned active layer can pass from a first electrical...

20050286396 - Temperature sensing apparatus and methods for servo and write compensation in a data recording module: Apparatus and methods are provided for a data recording module having an electronics die and a read/write die for writing and detecting data in a media die adjacent to the read/write die. A first temperature sensor is disposed in the read/write die to measure a first temperature. A second temperature...

20050286397 - Method for recycling recovered discs, flame retardant resin composition and flame retardant resin molded products: A recovered disc of a structure in which plural disc substrates are bonded together with an adhesive, is to be recycled. To this end, there is provided a recycling method for a recovered disc wherein a recovered disc, containing a material of at least one coating film, out of a...

20050286398 - Optical disc and discarding method thereof: A substrate 12 consists of a transparent plastic made from polylactic acid as a material, and an optical disc 10 provided with the substrate 12 is heated up to a heat deflection temperature. As a result, the substrate 12 is softened, and pits 22 formed on a signal recording surface...

20050286399 - Optical disc having plurality of recording layers, and method and apparatus for recording data thereon: Provided are an optical disc having a plurality of recording layers, and a method and apparatus for recording data thereon. The optical disc has a plurality of recording layers, each recording layer including: a data area; a connecting area; and a remaining area. The data, connecting, and remaining areas are...

20050286400 - Optical disk and optical disk apparatus: An optical disk according to the present invention includes: a substrate in a disk shape; guide grooves arranged at a pitch p in a radial direction of the substrate, each of the guide grooves being formed so as to extend in a circumferential direction of the substrate; and a pre-pit...

20050286401 - Rom-type optical recording medium and stamper for manufacturing rom-type optical recording medium: In a ROM-type optical recording medium including a substrate 2 having a plurality of concave pits 2a formed on a surface thereof, a light transmission layer 4, and a reflective layer 3 formed between the substrate 2 and the light transmission layer 4, and adapted to reproduce data by causing...

20050281138 - Amplifier and computer program therefor: An AV receiver 1 is connected to a DVD player AVP1 and a CD player AVP2 via an IEEE1394 bus. The AV receiver 1 stores a command receiving terminal 161 connected to a remote controller receiver RE1 as being associated with the DVD player AVP1, and a command receiving terminal...

20050281139 - Disc reproducing apparatus: A reproducing apparatus including a reproducing unit for reproducing an SACD held in a reproduction position and outputting an audio signal and also reading disc control information from the SACD when the SACD is held in the reproduction position, and a genre display unit for displaying a genre of a...

20050281140 - Transferring compressed audio via a playback buffer: A method for transferring real time information on a record carrier, typically bitstream audio on an optical disc, which method comprises encoding consecutive segments of the real time information to compressed real time data in frames, and determining a buffer occupancy for at least one frame, which buffer occupancy is...

20050281141 - Light receiving and emitting integrated device, optical pickup provided therewith, and optical disk apparatus: A light receiving and emitting integrated device is provided that can be connected to an IC for an optical pickup of the discrete package type, regardless of use of the knife edge method for a focus servo signal. In the light receiving and emitting integrated device, a diffraction grating branches...

20050281146 - Magnetic actuator: A magnetic actuator. The magnetic actuator comprises a first magnet, a second magnet, a first yoke, and a first coil. The second magnet is arranged axially with respect to the first magnet with repulsion therebetween. The first yoke is disposed between the first magnet and the second magnet, and the...

20050281143 - Objective lens driving apparatus and optical disc apparatus: The invention provides an objective lens driving apparatus in which an efficiency of a magnetic circuit is improved by making a magnetic flux density distribution of the objective lens driving apparatus close to symmetrical. An objective lens driving apparatus has an objective lens, a tracking coil driving the objective lens...

20050281144 - Objective lens driving apparatus and optical disk apparatus: It is an object of this invention to increase the rigidity of a movable part and decrease its weight. An objective lens driving apparatus has an objective lens which focuses light on the recording surface of an optical disk. The objective lens is driven by focusing coils in directions approaching...

20050281148 - Optical disk apparatus employing high-na objective lens: Protecting member is provided on lens-holding member to protrude toward optical disk more than objective lens. Further protecting member is prevented from contact with cover layer, even when movable part is not driven by actuator and elastic supporting members are bent by gravity acting on movable part toward optical disk....

20050281147 - Optical pickup actuator, method of manufacturing the optical pickup actuator, and optical pickup employing the optical pickup actuator, and optical recording and/or reproducing apparatus employing the optical pickup: An optical pickup actuator including a blade supported by a plurality of suspensions to be movable with respect to a base and a magnetic circuit to drive a movable part including the blade, a method of manufacturing the optical pickup actuator, an optical pickup employing the optical pickup actuator, and...

20050281145 - Optical pickup and optical disk apparatus: A lensholder has one focus coil and two tracking coil. The lensholder has an accommodation recess portion accommodating an objective lens. A layer having thermal conductivity is provided between an inner peripheral surface of the lensholder and an outer circumferential surface of the objective lens and between a bottom wall...

20050281142 - Optical pickup device having heat radiation means and optical disk apparatus using the same: An optical pickup device comprises a semiconductor laser that causes outgoing of laser beam used for reproduction and recording of information on an optical disk, and an objective lens that conducts the laser beam outgoing from the semiconductor laser to the optical disk. The objective lens is driven by a...

20050281149 - System and method for controlling a tracking servo during label printing: A visible light characteristic changing layer formed from photosensitive or heat-sensitive material is formed in a location which can be viewed from a part of a label surface of an optical disk. The optical disk is set on a turntable of an optical disk unit while the label surface of...

20050281150 - Method for determining a compensation value for tracking error signal: A method for determining a compensation value for tracking error signal in an optical disc drive is disclosed. The optical disc drive rotates a DVD to read data. The DVD has a first reflection layer and a second reflection layer. The first and the second reflection layers have respectively a...

20050281151 - Servo error signal generation circuit and servo error signal generation method: A servo error signal generation circuit comprises a first sampling unit for sampling first detection signals at first sampling timings, a second sampling unit for sampling second detection signals at second sampling timings which are obtained by periodically thinning out the first sampling timings, an AD converter for analog-to-digital converting...

20050281152 - Scanning optical media during label: A visible light characteristic changing layer formed from photosensitive or heat-sensitive material is formed in a location which can be viewed from a part of a label surface of an optical disk. The optical disk is set on a turntable of an optical disk unit while the label surface of...

20050281156 - Optical information recording/reproducing apparatus capable of detecting timing to interrupt recording or reproducing: There is disclosed an optical information recording/reproducing apparatus capable of exactly detecting a timing to interrupt recording or reproducing. A threshold value is set with respect to a state detection signal (parameter) indicating an irradiation state with an optical disk 1 such as a focus error signal and a tracking...

20050281155 - Optical recording apparatus and a controlling method thereof: An optical recording controlling method and an optical recording apparatus utilizing the method implement operations of performing a recording operation to record the data in the recording medium, applying a pause request signal to stop, temporarily, the recording operation, determining whether to set a record resume time, and if the...

20050281157 - Optical disk editing apparatus and method for the same: Disclosed are an optical disk editing apparatus and a method for operating the same. A user input unit requests an edition associated with a predetermined play list in at least one play list set in a user defined program chain information table of the optical disk, and a control unit...

20050281158 - Recording control device, recording control method, program and recording system: To provide a recording control device able to control a data recording so as not to use a defective sector free from a sector test before a shipment thereof, which controls a data recording with respect to a plurality of sectors in a recording region of a recording medium and...

20050281159 - Optical writing apparatus and method for controlling execution time of writing thereof: A method of controlling an optical writing apparatus and an optical writing apparatus utilizing the method to control its write execution time include a pickup to write write data onto a writing medium, a servo driving portion to control the drive of the pickup, a counter to count a predetermined...

20050281160 - Link writing method for a recordable or rewritable compact disk and drive for using the method: A link writing method for a recordable or rewritable compact disk includes recording a writing interruption address and enabling a succeeding writing process after the writing interruption. Enabling a succeeding writing process includes searching the linking area and enabling a start writing signal and activating a laser power. The method...

20050281154 - Information recording apparatus for controlling recording power of a recording medium having a constant linear density, an information recording method, an information recording program, a recording medium that can be read and written to by a computer, an: An information recording apparatus that records information with a substantially constant linear density in a circumferential direction of a recording medium having a disk shape, includes variable velocity recording control means, recording power modification means, recording power storage means, and initial recording power value setting means....

20050281153 - Optical memory device: An optical disk device sets an optimal write strategy for an optical disk within a short time period. The optical disk device includes a write strategy setting part for measuring a deviation in information recorded in a test area within the optical information recording medium to set a write strategy,...

20050281162 - Laser drive system reduced emi noise: In optical disc drive, laser diode is used, and also HFM (High Frequency Module) oscillator is used to reduce laser mode hopping noise. Big EMI noise is radiated by the HFM current for optical noise reduction, or by the switching current for write-strategy of recording. Then conventionally, shield was required...

20050281163 - Content reproduction apparatus, content reproduction method, content management apparatus, content management method and computer program: A content reproduction apparatus and method is disclosed which can manage a use state for each one, two or more tracks included in a content and perform prescribed updating irrespective of the number of tracks reproduced in an overlapping relationship, with the following configuration. The content reproduction apparatus includes: a...

20050281164 - Write once type recording medium, recording device and recording method for write once type recording medium, and reproduction device and reproduction method for write once type recording medium: On a write-once-type recording medium 10, there are provided: a definite defect management area 13 to definitely record therein defect management information; and a plurality of temporary defect management areas 14A, 14B, and 14C to temporarily record therein the defect management information. If the recording medium 10 is not yet...

20050281161 - Data recording apparatus and method and data reproducing apparatus and method: The present invention relates to a system for distributing and purchasing contents data by way of wired and wireless communication means, said system comprises an accumulating section (33) for accumulating a plurality of contents data, an input operation section (23) to be used for selecting contents data from those accumulated...

20050281165 - Copy protection of optical discs: According to one standard, a multiple session audio disc has only two sessions, namely an audio session including successive audio tracks, and a following data session including just one data track. It has been determined that where copying of such a disc is to be undertaken using several common Microsoft...

20050281166 - Method, medium, and device changing a play mode: A method, medium, and device changing a play mode if an error occurs in a process of discriminating the type of optical discs. The method includes the operation of discriminating a type of an optical disc loaded in an optical player, and if the optical disc is discriminated as one...

20050281167 - Recording medium, and method and apparatus for reformatting the same: A recording medium, and a method and apparatus for reformatting the recording medium are disclosed. The method for reformatting a recording medium includes the steps of: (a) reading a plurality of physical access control information of the recording medium in a plurality of recording units; and (b) performing an initialization...

20050281168 - System of sampling interface for an optical pick-up head: A system of sampling interface for an optical pick-up head includes an optical pick-up head, a switch circuit and a sample and hold circuit. The optical pick-up head outputs one of a reading voltage and a writing voltage. The switch circuit includes a NMOS. The NMOS has a first source/drain...

20050281169 - Optical pick-up apparatus: An optical pickup apparatus for conducting recording and/or reproducing information of an optical information recording medium, comprises a light source; a converging optical system having an objective lens; and a photo-detector. The converging optical system comprises a plastic lens and a spherical aberration deviation correcting element to correct deviation of...

20050281171 - Optical pickup apparatus and optical disc apparatus: An optical pickup apparatus and an optical disc apparatus are adapted to raise the efficiency of utilization of the lasers of the apparatus for accurately detecting tracking errors by raising the intensity ratio of the beam of the 0-th order to the beams of the ±1st orders produced by splitting...

20050281170 - Optical pickup device: A laser light source emits a laser light of an elliptical shape in its polarization plane in parallel to the information recording surface of an optical disc. The laser light is incident into a raising unit, which is placed in a manner that the plane including the optical axis of...

20050281172 - Converging optical element and optical pickup apparatus: A converging optical element for use in an optical pickup apparatus reproducing and/or recording information on a first optical disc using a first light flux with a wavelength λ1 emitted by a first light source, reproducing and/or recording information on a second optical disc using a second light flux with...

20050281173 - Objective lens for optical pick-up: An objective lens for an optical pick-up which is used to record data to and/or to reproduce data from at least three types of optical discs by selectively using one of at least three light beams having different wavelengths is provided. When thicknesses of a first, second and optical discs...

20050281175 - method of storing and reading a data bit in a phase change alloy material: Alloy memory structures and methods are disclosed wherein a layer or volume of alloy material changes conductivity subsequent to introduction of a electron beam current-induced change in phase of the alloy, the conductivity change being detected using current detection means such as photon-emitting P-N junctions, and being associated with a...

20050281174 - Data storage device and control: The present invention provides data storage devices, systems and methods. An example device includes: a storage medium for storing data in the form of marks; and at least one probe. The probe(s) and storage medium are operable to move relative to each other, with each probe comprising a tip facing...

20050281176 - Optical recording medium: An optical recording medium includes a substrate, a plurality of grooves, a plurality of lands and a plurality of land protrusions. The grooves are formed on the substrate, and the lands are formed between the grooves. The land protrusions are formed on the lands....

20050281179 - Apparatus for optical disc spin-coating: The present invention provides an apparatus for optical disc spin-coating that prevents leakage of a photocurable resin due to a capillary phenomenon by controlling a contact area between a cap and a disc so that contamination of the disc and manufacturing errors do not occur. Furthermore, the apparatus of the...

20050281180 - Apparatus for optical disc spin-coating and method of coating optical disc: There is provided an apparatus for optical disc spin-coating, comprising a cap having a tapered protruding portion or a recess in its central lower portion; a turntable for rotation that has a tapered recess or protruding portion formed in an end of its central axis that is inserted into a...

20050281183 - Constant angular velocity disk label printing: A visible light characteristic changing layer formed from photosensitive or heat-sensitive material is formed in a location which can be viewed from a part of a label surface of an optical disk. The optical disk is set on a turntable of an optical disk unit while the label surface of...

20050281177 - High track density super resolution mo-rom medium: The invention relates to a MO-ROM medium with a small track width, wherein data is recorded at least on one side of a disk wherein a data side has on a substrate at least a recording layer wherein said data is recorded and at least a read-out layer to reproduce...

20050281178 - Information storage medium, recording and/or reproducing apparatus, and recording and/or reproducing method: An information storage medium, a recording and/or reproducing apparatus and a recording and/or reproducing method area, the information storage medium including an access control area for recording access control data (ACD) having common information set so that even a recording and/or reproducing apparatus that cannot recognize a predetermined function applied...

20050281181 - Optical media label printing using different power levels: A visible light characteristic changing layer formed from photosensitive or heat-sensitive material is formed in a location which can be viewed from a part of a label surface of an optical disk. The optical disk is set on a turntable of an optical disk unit while the label surface of...

20050281182 - Optical media printing using a vibration signal: A visible light characteristic changing layer formed from photosensitive or heat-sensitive material is formed in a location which can be viewed from a part of a label surface of an optical disk. The optical disk is set on a turntable of an optical disk unit while the label surface of...

20050281185 - Content transferring apparatus, content transferring method, and computer program: A content transferring apparatus is disclosed which includes: a source ID list reception unit for receiving a source ID list from a content reproducing apparatus capable of reproducing contents furnished with source IDs included in the source ID list; a first extraction unit for extracting from either one or a...

20050281184 - Image forming apparatus and associated method: Disclosed is an image forming apparatus comprises an attaching section 63 used to attach register mark information 61 which can be read by a cutting machine on image information 60, where the register mark has a specified shape, size and position. When a printing range of the image information 60...

20050281186 - Information carrier and devices for scanning the information carrier: A predetermined synchronization pattern (40), a so-called VFO field, in, for example, the headers 3 of an information carrier, consists of sequences of 3T marks and spaces (41), of 8T marks and spaces (42) and of 5T marks and spaces (43). This sequence of patterns is advantageous for setting the...

20050281187 - Optical memory device and optical reproducing device: An optical disk includes a plurality of information units, each of which has a pit array made up of a phase pit on an information track and phase pits surrounding the phase pit. With this structure, information can be recorded at high density, and recorded information can be reproduced from...

20050276169 - Optical recording method: In an optical recording method used when information is recorded in a phase-change recording layer of a large-capacity rewritable optical recording medium such as a DVD-RW, one block pulse is used as a recording pulse for forming one recording mark when a recording velocity is higher than a recording linear...

20050276170 - Component placement apparatus, component feeding apparatus and method: A component placement apparatus includes: a tray storing device having slots for storing trays, a tray transporting device for transporting a tray from the tray storing device to a pickup area, a controller for controlling the transport of the trays into and out of the tray storing device, and at...

20050276172 - Lens driving mechanism and image pickup device: A lens driving mechanism eccentrically drives at least one lens or lens subunit, hereunder called a correcting lens, in a lens system constituting a taking lens unit in a plane perpendicular to an optical axis direction, and includes a movable frame holding the correcting lens, two coils fixed at a...

20050276171 - Pickup device and recording medium drive unit: The pickup device includes: a fixed portion 11, a movable portion 12 movable in a tracking direction and a focus direction; linear resilient members 12A through 13D (Translator's comment: correctly, linear resilient members 13A through 13D) for connecting the fixed portion 11 and the movable portion 12; a coil 21...

20050276173 - Apparatus and method for focus pull-in: An apparatus for a focus pull-in and a method thereof that can promptly stabilize a focus servo operation. The apparatus includes an optical pickup having an object lens focusing a light emitted from a light source on an optical disc, a focus actuator moving the object lens along an optical...

20050276175 - Focus servo device:

20050276174 - Method for reproducing optical disc using one-wavelength: A method for reproducing an optical disc using one-wavelength. The method comprises the steps of determining a type of optical disc mounted on an optical disc drive, irradiating light having one-wavelength to any required layer as between a first disc layer and a second disc layer upon a determination that...

20050276176 - Intelligent layer jump method: An intelligent layer jump method applied when an optical disc drive accesses a disc. The disc has a central reference point, at least a first recoding layer and a second recoding layer. The first recoding layer has a plurality of first tracks, while the second recoding layer has a plurality...

20050276177 - Recording/reproduction apparatus, recording/reproduction method and information recording medium: A recording and reproduction apparatus for a recording medium including a plurality of information layers includes a focusing signal generation section for generating focusing signals F+and F−in accordance with a light beam reflected by the recording medium; a focusing control section for generating a focusing error signal in accordance with...

20050276178 - Method of deriving suitable-and-hold timing, and optical disk drive using the same method: In the sample-and-hold circuit for laser power detection signal and servo signal, the sample-and-hold operation timing is controlled to set by monitoring the output from the sample-and-hold circuit. In the invention of this application, the sample-and-hold timing is changed to be larger or smaller than the estimated timing, and reference...

20050276179 - Optical pickup system and information recording and/or reproducing apparatus employing the same: An optical pickup system includes first and second light sources, a composite prism, a reflective prism, a collimating lens and an objective lens. The first light source emits a first light beams with a first wavelength. The second light source emits a second light beams with a second wavelength greater...

20050276180 - Data processing apparatus: There are cases where image contents with a limited number of copies allow data transfer although not dubbing operations. Transfer of temporarily recorded data from a recording medium such as a hard disk to a recording medium such a DVD-R raises a problem of erasing hard disk data for transfer...

20050276182 - Disk unit: A pair of guide shafts 230 supporting an information processing section 240 equipped with a pickup 240 (translator's comment: correctly, 242) is provided on a mount 210 rotatably disposed in a casing 110 with a turn table for rotatably supporting the optical disc 10 being provided on the rotation end...

20050276183 - Image data recording apparatus: An image data recording apparatus includes an area producing device producing a plurality of areas on a recording medium, an initialization device initializing the areas produced by the area producing device in accordance with desired forms, an area production designating device causing a user to designate a number of the...

20050276185 - Information storage medium and method and apparatus for recording/reproducing data on/from the same: An information storage medium and a method and apparatus for recording/reproducing data on/from the information storage medium. The information storage medium includes a plurality of recording layers, each having a user data area, on which data can be recorded by a pickup. Data is recorded in the order of recording...

20050276184 - Optical disk, optical disk device, and method for setting optical disk device: An optical disk, an optical disk device, and a method for setting an optical disk device are disclosed, in which the optical disk can enter a good state of recording and reproduction within a shorter amount of time. Specific information including parameters that determine the recording and reproduction state of...

20050276181 - Recording and/or reproducing apparatus, recording and/or reproducing method and information storage medium therefor: A recording and/or reproducing apparatus, a recording and/or reproducing method, and an information storage medium, wherein the recording and/or reproducing apparatus includes: a writing and/or reading unit writing data to or reading data from an information storage medium having one or more information recording layers; and a control unit controlling...

20050276186 - Positioning device: A positioning device capable of performing accurate positioning of holograms formed on a recording medium is disclosed. The positioning device includes a rotation driving unit for rotating a disk-shaped recording medium in a peripheral direction, a horizontal driving unit for moving the recording medium in a horizontal direction. The positioning...

20050276188 - Information storage medium and method and apparatus for recording/reproducing data on/from the same: An information storage medium on which data is recorded after performing optimum power control (OPC) and a method and apparatus to record/reproduce data on/from the information storage medium, wherein the recordable information storage medium has a plurality of recording layers and a pickup irradiates a beam onto the information storage...

20050276187 - Method of allocating areas in optical disc, data recording and/or reproducing apparatus adopting the same, and optical disc therefor: Recording areas in an optical disc having a plurality of recording layers allocated so each recording layer includes a data area for recording data, a connection area in which a predetermined pattern of data for indicating that no data area is recorded therein, and a remaining area, wherein a size...

20050276189 - Detecting radius of optically writable label side of optical disc at which marking have not been written: A method of an embodiment of the invention rotates an optical disc having an optically writable label side. The optical disc is radially scanned with a laser incident to the optically writable label side, from a first edge of the optical disc to a second edge of the optical disc....

20050276193 - Optical disc reproducing apparatus: An optical disc reproducing apparatus has a function of setting a cutoff frequency and a boost amount of a read out signal from an optical disc and performing equalizer adjustment, and includes a system controller for searching for an optimal jitter value by simultaneously changing a cutoff frequency and a...

20050276194 - Apparatus, medium, and method for compensating for a defect on a medium based on a corresponding area being a recorded area or an unrecorded area: An apparatus, medium, and method for compensating for a defect, based on a discrimination of whether the defect is in a recorded or unrecorded area in an optical recording medium. A method for compensating for the defect includes at least operations of referring to a predetermined information area of a...

20050276195 - Data storage apparatus that appropriately revises fdcb information during background formatting: A data storage apparatus, including a controller that formats a rewritable recording medium in the background, interrupts the background formatting when a host computer requests to store data in the rewritable recording medium, stores the data in the rewritable recording medium after interrupting the background formatting, revises control information stored...

20050276196 - Optical disc device capable of compensating for skew of optical pickup and method thereof: An optical disc device capable of recording/reproducing data in an optical disc. The optical disc device includes an optical pickup unit for scanning a laser signal onto a specified area of an optical disc, a skew adjustment unit for changing a skew of the optical pickup unit, a signal detection...

20050276197 - Optical pickup device: An optical pickup device comprising: a tilting mechanism for tilting an objective lens in accordance with tilt of an optical information disc disposed above the objective lens; a wavelength-selecting opening-regulating filter disposed immediately below the objective lens and moving integrally with the objective lens; and a turning mirror for guiding...

20050276190 - Control circuit for optical disk apparatus and method of controlling record/playback of optical disk: A control circuit provided in an optical disk apparatus which apparatus has a motor to move an optical pickup unit for performing record/playback control of an optical disk in a radial direction of the optical disk, sets a plurality of concentric annular zones on the optical disk, and performs record/playback...

20050276192 - Information storage medium and method and system for reproducing data from the same: A recordable information storage medium having a plurality of information recording layers, where each of the information recording layers of the recordable information storage medium has a plurality of information recording layers each including a lead-in area, a user data area, a lead-out area, and a dedicated area for a...

20050276191 - Optical disk, optical disk recording method, and optical disk recording apparatus: In an optical disk recording method of recording data onto a recordable optical disk which includes a data zone where data is recorded and a management data zone where management data indicating the recorded part of the data zone is recorded, an extended management data zone in which the management...

20050276199 - Optical disk identification device: The present invention provides an optical disk identification device for use in an optical disk reproduction apparatus for reproducing a plurality of types of optical disks based on information recorded on the optical disks. Recorded information is reproduced from an optical disk 1 while an optical pickup 3 is fixed...

20050276198 - Recording medium discrimination apparatus and method: An apparatus can correctly discriminate between types of a recording medium, and obtain good fixed image by performing fixing in the optimum fixing conditions for a variety of different types of recording media. The apparatus includes an LED 101 serving as a first irradiation section, an LED 104 serving as...

20050276200 - Disk driving apparatus and method for operating disk driving apparatus: A first delay circuit receives a sampling clock obtained by multiplying detected frequency of reference clock patterns and outputs delay clocks from first delay stages, respectively. Recording frequency of the sampling clock is not obtained using the reference clock patterns but obtained using received addresses. A disk driving apparatus obtains...

20050276201 - Optical head device: An optical head device including a semiconductor laser, a raising mirror for deflecting a laser beam emitted from the semiconductor laser to an optical recording disk, a light receiving element for monitor for monitoring the laser beam to control an output of the semiconductor laser. The major axis of an...

20050276202 - Optical head, optical information apparatus, and optical-information reproducing method: An optical head is provided which is capable of realizing a stable tracking control, even if the rotational center of an information recording medium is not located on the extension line of the transfer directions of a light-concentrating element. This optical head includes: a semiconductor laser which emits a beam...

20050276204 - Objective lens drive unit in an optical head: An objective lens drive unit in an optical head includes a lens holder mounting thereon an objective lens, a sheet coil unit including a focusing coil and a tracking coil, and a pair of liquid crystal devices (LCDs) correcting a coma aberration and astigmatism of the optical beam from the...

20050276203 - Optical pickup apparatus: Disclosed is an optical pickup apparatus. Particularly, a photo detector for use in the optical pickup apparatus detects a beam reflected from the disc, and includes a substrate for transmitting three beams (one main beam and two sub beams) reflected from the optical disc; a liquid crystal for refracting the...

20050276205 - Optical pickup apparatus and method: An optical pickup apparatus and method for recording and/or reproducing information onto and/or from optical discs having diverse specifications. Particularly, a diffraction grating for use in the optical pickup apparatus includes a substrate for refracting an output beam from a laser diode at a predetermined refractive index, a liquid crystal...

20050276206 - Optical head device and optical information recording or reproducing device: A diffractive optical element for dividing a light emitted from a light source into a main beam and at least one sub-beam, an objective lens for focusing the beams on a disk-shaped optical recording medium with spiral tracks, and a photodetector for receiving the beams reflected from the optical recording...

20050276207 - Objective lens, actuator, optical head, and optical recording/reproducing apparatus: The invention relates to an objective lens for converging light emitted by a light source to irradiate an optical recording medium with the convergent light, an actuator having the same, an optical head for recording information on the optical recording medium and reproducing information recorded on the same, and an...

20050276208 - Optical pickup adjusting apparatus and optical pickup adjusting method: It is an object of the present invention to adjust an optical pickup without using an optical disc. An optical axis adjusting apparatus of the present invention comprises: a light receiving unit having a half mirror surface located at a position adapted to mount an optical disc and also having...

20050276209 - Near-field optical head system with integrated slider and laser: A near-field optical apparatus having one or more solid state lasers and an aerodynamically shaped slider which comprise a single integrated, monolithic device fabricated from the same base semiconductor material. The monolithic optical head can be quickly and easily attached to the read arm of an optical read/write device without...

20050276211 - Information recording medium and manufacturing process: An information recording medium and manufacturing method for high-speed and high density recording. An inorganic film is formed by sputtering while applying a bias voltage to shift the substrate voltage potential in the negative direction, or a laminated film is formed by applying energy after coating a substrate with an...

20050276210 - Optical data carrier, method for producing an optical data carrier and a device for producing an optical data carrier: The invention relates to an optical data carrier comprising an information carrying electrically conductive layer arranged on a base material and a chip connected to the electrically conductive layer, the electrically conductive layer being configured as an antenna element for transferring data and/or energy, wherein the electrically conductive layer comprises...

20050276212 - Information record medium, and information record apparatus and method: An information record medium is provided with: a first record layer (107) for recording first information, and one or more second record layers (207) disposed on said first record layer, each second layer being for recording second information, each layer of said second layers has a predetermined area (PCA1-1) where...

20050276213 - Information recording medium, reproduction method, reproduction apparatus and manufacturing apparatus thereof: The numbers of times by which plural types of segments are consecutively arranged are limited, an address reading performance is enhanced and address information is correctly read out based on determination of the number of consecutive segments. A track is divided into physical segments, N (=17) wobble data units of...

20050270911 - Optical disk apparatus and address detection method: An optical disk apparatus comprises a Gray code detector for detecting a Gray code of a track address, a position detector for detecting, as an address uncertain position, a least significant bit of the detected Gray code of the track address and a bit of the detected Gray code of...

20050270912 - Optical pickup and apparatus for recording and/or reproducing optical recording medium: The present invention provides an optical pickup in which light beams of different wavelengths, radiated from plural light sources and reflected back from a recording surface, are condensed in the same area. The optical pickup records and/or reproduces each of a plurality of optical recording mediums having different protective substrate...

20050270915 - Disc drive apparatus, disc drive unit and optical pickup device: The present invention provides a disc drive apparatus that can effectively prevent the part of the flexible printed circuit board that cannot be covered by the top cover from coming out to the outside through the aperture of the top cover when the flexible printed circuit board displaces its folded...

20050270913 - Method and apparatus for detecting the landing of optical pickup head: The present invention discloses a method for detecting the landing of an optical pickup head in an optical disk drive, characterized in that the electric current of a sled motor of the optical pickup head is detected to determine whether or not the optical pickup head is parked on a...

20050270914 - Wiring layout structure for optical head device: A fixture plate is fixed by a screw onto an optical housing of the optical head device at a portion corresponding to where a monitor signal path portion and an act signal path portion are arranged overlapping one another. The two signal path portions are portions of two types of...

20050270916 - Optical disc reading and reproducing apparatus: An optical disc reading and reproducing apparatus includes reading means for reading data recorded on an optical disc by applying laser light to the disc through an objective lens and detecting reflected light, focus control means for performing focus control for moving the lens based on a focus error signal,...

20050270917 - Optical disc reading and reproducing apparatus: An optical disc reading and reproducing apparatus includes reading means for reading data recorded on an optical disc by applying laser light through an objective lens and detecting its reflected light, focus control means for performing focus control for moving the objective lens based on a focus error signal indicating...

20050270918 - Optical disc drive capable of generating digital servo control signals and method thereof: An optical disc drive and related method for accessing an optical disc. The optical disc drive includes a pickup module, a digital pre-amp module, a servo control module, and an actuator module. The pickup module generates a plurality of digital receiving signals according to a light beam reflected off the...

20050270920 - Method and apparatus for detecting probe position error in a data storage system and method and apparatus for tracking data: An apparatus for detecting a probe position error includes a position error extracting unit extracting probe position errors from signals detected by a probe; a position error adding unit calculating the probe position errors in units of a predetermined time; and a signal processing unit storing a past probe position...

20050270919 - Tracking error detector: A tracking error detector receives laser light that is irradiated onto tracks on a disc surface and that is reflected from the tracks by using a light-receiving device having divided portions, binarizes signals output from the light-receiving device having divided portions in accordance with the amount of tracking error by...

20050270921 - Method to reduce the offset component of tracking error in an optical disc player: A method of tracking error correction, primarily for utilization in optical disc drives using single beam optical pick-up heads. Delinearization in the tracking servo of a single beam optical pick-up head, contributed to by inherent design properties, is minimized by extracting a value proportional to a tracking error signal offset...

20050270924 - Device and method for controlling tilt servo: A tilt servo control device of an apparatus for recording information on and reproducing information from an optical recording medium set in the apparatus, the apparatus comprising an optical system for leading a laser beam emitted from a light source to a recording surface of the optical recording medium and...

20050270922 - Method and apparatus for controlling tilt-angle of lens in optical pick-up head: A method and an apparatus of adjusting the tilt-angle of the lens in the optical pick-up head. The apparatus includes a position detecting unit for detecting a position deviation of the lens against the sled, a parameter generating unit for generating a tilt control parameter according to the position deviation,...

20050270923 - Tilt adjustment device for an optical disk drive: A tilt adjustment device for adjusting tilt of a left guide bar with respect to a right guide bar, and includes a holding seat and a cylindrical-shaped bushing disposed rotatably within the holding seat. The bushing defines a bar-retention hole to permit extension of the left guide bar theretrhough, and...

20050270925 - Optical pickup and recording and/or reproducing apparatus using same: An optical pickup including a light source unit having a first radiating unit for radiating a light beam of a first wavelength, a second radiating unit for radiating a light beam of a second wavelength and a third radiating unit for radiating a light beam of a third wavelength, a...

20050270927 - Disk array device and battery output control method for disk array device: The disk array device supplies appropriate power to various parts in accordance with the operating mode in cases where the output of the main power supply drops. The disk array device adjusts the power from a commercial power source 6 with an AC/DC power supply 5, and supplies this power...

20050270930 - Disk drive, control method thereof and disk-falsification detection method: Embodiments of the invention provide a falsification detection method which is capable of recognizing the substance of a falsification, applicable to not only a specific file system, but any arbitrary application writing data with a logical structure, usable in a standalone environment and able to prevent its performance from deteriorating...

20050270932 - Optical disc and method of identifying recording layer: An optical disc in which a physical address of each smallest recording unit and a recorded address increase or decrease on first and second recording layers, and a method of identifying the recording layers. Embodiments are provided for discs having first and second recording layers with a same or an...

20050270928 - Optical disc device: An optical disc device is disclosed. The optical disc device includes a thermal head that is disposed at a side opposite to an optical pickup, which irradiates a laser beam for writing and erasing information, relative to a mounted optical disc, and is configured to bring a thermal head into...

20050270926 - Phonographic turntable with built-in audio to usb or firewire device: The present invention is a turntable which includes an internal analog to digital converter and a controller for a standard digital format. This allows a jack for a standard digital frat to be incorporated into the turntable, so that digital signals are generated to be received by the soundcard of...

20050270929 - Television apparatus embedded with optical disk device: An television apparatus embedded with an optical disk device includes a television unit having a microcomputer for a television and a power source for a television and an optical disk unit having a microcomputer for an optical disk, a power source for the optical disk and an oscillation stop controller....

20050270931 - Utilizing an incentive point system based on disc and user identification: A system and method for awarding incentive points utilizing unique disc identification to provide access to disc storage media includes a disc storage medium with a permanently recorded disc identification, a user console with a set identification, a network, and a host server managing a user database and a disc...

20050270936 - Disk device, method for controlling disk device, program and recording medium: A disk apparatus includes a disk section, a process, section, a disk start control device, and a disk start mode setting device. At the time when power ON operation is carried out, in the case (1) when the disk start mode setting device is set in the disabling mode, the...

20050270938 - Digital audio recording medium and reproducing apparatus thereof: A DVD audio data structure following high-sound-quality specifications is realized, making the best use of the audio data structure standard in DVD video. A first sample data string created by digitizing a first channel audio signal at a first sampling frequency in a first number of quantization bits, a second...

20050270937 - Frequency detection method for optical disc bit data reproduction apparatus: The present invention relates to a frequency detection method for an optical disc bit data reproduction apparatus. The frequency detection method uses the optical disc bit data reproduction apparatus including an Analog to Digital Converter (ADC), an interpolator, an asymmetry compensator, a digital bit and successive bit length detector, a...

20050270935 - Information storage medium: An information storage medium having a plurality of information storage layers, each of which includes an optimal power control (OPC) area for obtaining an optimal recording condition, wherein OPC areas in odd-numbered and even-numbered information storage layers are disposed not to face each other and not to contact each other,...

20050270934 - Information storage medium and method and apparatus for recording and/or reproducing data: An information storage medium and an apparatus for recording and/or reproducing the information storage medium capable of controlling optimal recording power without an influence of an optimal power control (OPC) area in a layer upon an OPC area in a different layer. The information storage medium includes at least one...

20050270933 - Information storage medium, method and apparatus reproducing data there from: An information storage medium having a plurality of information storage layers, each of which includes an optimal power control (OPC) area for obtaining an optimal recording condition. Optimal power control areas in odd-numbered and even-numbered information storage layers viewed from a direction in which light is incident upon the information...

20050270939 - Optical disk recording/reproducing method, optical disk recording/reproducing apparatus and optical disk: In an optical disk system using a PRML identification system, a method for deriving an optimum recording wave in a short period of time is provided. Parameters of the recording wave are adjusted by using an evaluation value obtained by a signal evaluation method which is suitable for the PRML...

20050270940 - Statistical circuit: The statistical circuit includes a pulse-width measuring unit, serially coupling delay units, a logical circuit and counters. The pulse-width measuring unit is for receiving a sampling signal and generating a pulse-width signal. A pulse occurs on the pulse-width signal as the sampling signal has status change. The delay units include...

20050270941 - Optical disk device and program for recording and reproducing information on and from an optical recording medium: The present invention relates to an optical disk device for recording or reproducing information on or from an optical information recording medium by forming marks and spaces. The device includes a jitter value measurement unit, a measurement unit, measured value memory, theoretical length memory, a deviation value calculation unit, a...

20050270942 - Optical disk tracking servo circuit enabled to compensate for non-continuous track segments or prolonged defect: The invention pertains to an improvement for a tracking and focusing servo and defect management circuit that controls the tracking and focusing of an optical head on an optical media in an apparatus for reproducing a data, sound or image recorded on the optical media. The invention characterizes by the...

20050270944 - Information recording medium, recording apparatus and method for the same, reproducing apparatus and method for the same, computer program product for record or reproduction control, and data structure including control signal: An information recording medium is provided with: a user data area to record therein record data; a spare area to alter thereto one portion of the user data area, along with defect management in the user data area; and a defect management area to record therein defect management information which...

20050270946 - Method and apparatus for recording management information on a recording medium and the recording medium: The write-once recording medium has a data structure for managing temporary defect management areas, TDMAs, of the recording medium, where each TDMA is for at least storing temporary defect management information. In one embodiment, the recording medium includes a TDMA access indicator, TAI, area for selectively storing data indicating which...

20050270947 - Methods for optical disc sector verification: A method for verifying sectors on an optical disc is provided. The method includes writing user data to unverified sectors of the optical disc and verifying the sectors of the optical disc with the user data. The sectors of the optical disc are verified by reading the user data on...

20050270943 - Recording medium defect management: A recording medium (D) comprises a file system area (FSA), a data area (DAA) and an initial defect management area (DMA). A system comprises a drive (DR) for writing data (DA) to or reading data (DR) from the data area (DAA) or the defect management area (DMA), and a host...

20050270945 - Write once recording medium, recording device and recording method for write one recording medium, and reproduction device and reproduction method for write once recording medium: A temporary defect management area 14 is placed between a control information recording area 12 and a data area 11. Before a recording medium 10 is finalized, defect management information is temporarily recorded into the temporary defect management area. Upon finalizing, the defect management information is recorded into a definite...

20050270948 - Dvd recorder and recording and reproducing device: A recording and reproducing device is provided for recording and reproducing data on an optical disk having a cutting data area, which is an area being data rewritable and has data displayed by laser cutting in a radiating direction. In the recording and reproducing device, when an instruction of making...

20050270949 - Optical disc player and method for reproducing thereof: An optical disc player discriminates an attribution of tracks recorded onto a disc inserted in the player, and normally reproduces MP3 tracks recorded onto discs inserted into a plurality of disc drivers using an MP3 decoder. Also, according to a method of reproducing an optical disc, the optical disc player...

20050270950 - Method of erasing an erasable disc: A method of erasing an erasable disc. When an optical drive is erasing a DVD-RW disc, a write mode, instead of a conventional erase mode, is used to execute an erase operation. In the write mode, the invention sets current values of individual current paths in a laser diode drive...

20050270951 - Pickup control device, optical disk apparatus and pickup control method for the same: A pickup control device includes: a servo system which processes a first signal for error control read from an optical disk to generate a servo control signal; a clock signal generator which generates a clock signal synchronized with the rotation of the optical disk; a first memory and a second...

20050270952 - Clamper guider in slot-in drive: A clamper guider in a slot-in drive comprises a sheet body, a lower section at the lower side of the sheet body is disposed at the front end of the sheet body; a rear section pivotally connected to a ceiling plate of a chassis is disposed at the rear end...

20050270953 - Optical information recording/reproduction medium recording method, recording/reproduction method, and reproduction method, recording device, recording/reproduction device, reproduction device, and optical information recording/reproduction medium: Optical information recording and reproducing medium 10 has two recording layers of first and second recording layers 12 and 14, from a laser beam incident surface side. In each control area 21, recording layer management information containing at least information indicating recording states of a plurality of areas into which...

20050270956 - Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method: The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a...

20050270955 - Optical pickup unit and information recording and reproduction apparatus: An optical pickup unit includes a light source emitting a light beam, an objective lens focusing the light beam onto an information recording medium, a light detection part receiving the light beam reflected from the information recording medium, and a light blocking part selectively blocking a part of the light...

20050270954 - Optical recording apparatus using scanning mirror for generating two-dimensional beam: The present invention relates to an optical recording apparatus, which converts a one-dimensional signal beam into a two-dimensional signal beam using a scanning mirror at the time of recording data on a holographic recording medium, etc., thus greatly reducing required manufacturing processes when manufacturing a spatial light modulator. The optical...

20050270957 - Optical system for processing cd, dvd and holographic digital data: An optical system capable of selectively processing CD, DVD and holographic digital data is provided. The system includes a beam generation unit providing a linearly polarized light beam; a beam splitter for respectively reflecting and transmitting a first and a second linearly polarized light beam component; an optical sensor; a...

20050270958 - Objective lens and optical pickup apparatus: The present invention includes relates to an objective lens used for reproducing and/or recording of information for at least two types of optical discs including high density discs, and has excellent wavelength characteristics, temperature characteristics and tracking characteristics and to provide an optical pickup apparatus employing this objective lens. An...

20050270959 - Recording method for optical recording medium, and optical recording apparatus: The present invention is a recording method for optical recording medium forms a few types of amorphous mark vary from at least any one from length and area upon repeated irradiation by a recording power (Pw) light and a cooling power (Pb) light to an information layer comprising a phase-changing...

20050270960 - Multi-stack optical information carrier comprising thermochromic layer: The present invention relates to a multi-stack optical information carrier for recording information by means of a laser beam, said optical information carrier comprising:—a substrate layer (S),—at least two recording stacks (L1, L2), each comprising a recording layer (P1, P2), at least one heat sink layer (H1-H4) and dielectric layers...

20050270962 - Optical disk having a hard coat layer having sebum stain proofness imparted: An optical disk of a system wherein a recording layer is to be irradiated through a thin film cover layer with a laser beam, wherein a hard coat layer (W) is formed on the thin film cover layer, and the hard coat layer (W) is made of a cured product...

20050270961 - Optical recording medium: An optical recording medium according to the present invention includes a support substrate and a light transmission layer formed on one side of the support substrate and constituted so that data are recorded therein or reproduced therefrom by projecting a laser beam having a wavelength of 380 nm to 450...

20050270963 - Optical recording medium: An optical recording medium according to the invention has a disc body 11 in which a label side 11b can be viewed from a light incident side 11a, a printing layer 12 that is provided on the label side 11b of the disc body 11, and an ink receiving layer...

20050270964 - Optical disc having rfid tag, optical disc apparatus, and system for preventing unauthorized copying: In an optical disc having an RFID tag, disc control information needed for control of reproduction of the content recorded in the disc body of the optical disc is stored in the RFID tag. Thereby, even if the content recorded in the disc body is illegally copied in some way,...

20050270966 - Optical disc recording method and apparatus: Data is recorded on an optical disc using a combination of a user data area where user data is recorded, a control data area for reproduction provided on an inner radius side of the user data area, and an outer guard zone provided on an outer radius side of the...

20050270965 - Optical recording medium, recording/reproducing apparatus and method, and recording medium storing program for executing the method: An information recording medium includes an access control area in which access control data (ACD) is recorded, the ACD having common information set to allow a recording/reproducing apparatus that cannot recognize a predetermined function of the information recording medium to control access to the information recording medium; and an ACD...

20050270967 - Method for processing a wobble signal: A wobble signal is generated from at least two elementary signals (A,B,C,D) detected by scanning a wobbled track of a data carrier. The invention proposes a solution for eliminating the noise of various origins in the wobble signal, notably the high frequency data leakage into the wobble signal due to...

20050265133 - Information recording method and optical recording medium therefor: An information recording method including irradiating a phase change recording layer of an optical recording medium with either a multi-pulse laser light train having a recording power of Pw or laser light having an erasing power Pe to record a mark having a length nT in the recording layer, wherein...

20050265134 - Optical recording material, optical recording medium and optical recording/reproducing device: The present invention provides an optical recording material for recording information by utilizing a change in absorption, a change in refractive index or a change in shape accompanying irradiation with light. The optical recording material includes a polymer or an oligomer which has a side chain containing one or more...

20050265135 - Recording and reproducing apparatus and recording and reproducing method: A recording and reproducing apparatus having a recording unit which has a recording region for recording information, a computing unit divides the recording region of the recording unit into a first region and a second region for repeated recording in a direction from a head to an end point, and...

20050265136 - Feedback control system and method thereof: A feedback control system includes an optical pickup head, a temperature sensor, a microcontroller and a servo control system. The optical pickup head emits a laser beam onto an optical disk to read/write data. The temperature sensor senses an operating temperature of the optical pickup head, and outputs a corresponding...

20050265142 - Biaxial actuator apparatus and a mehod for mounting and adjusting the biaxial actuator: The apparatus and methods of the present invention provide for a biaxial actuator, an optical pickup device, and an information optical processing device, in which the biaxial actuator is favorably mounted using a single structure. The mounting structure includes first fastening portions protruding from a bottom plate affixed to a...

20050265137 - Disc drive apparatus: A disc drive apparatus (1) comprises a sledge (10) radially displaceable with respect to an apparatus frame (3); a platform (20) radially displaceable with respect to said sledge (10); a controllable sledge actuator (11) for moving the sledge (10) radially with respect to said apparatus frame (3); a control unit...

20050265139 - Light delivery technique for heat assisted magnetic recording head: A suspension arm for an optical transducer comprises a load beam, a slider coupled to the load beam by a gimbal assembly and including an optical transducer positioned adjacent to an end of the slider facing a pivot point of the suspension arm, and an optical fiber for transmitting light...

20050265138 - Optical disk drive, and a method of assembling it: An optical disk drive comprises an optical pick-up unit (5) comprising a fixed part (7) with at least a light source, and a movable part (8) mounted on a guide (9) and comprising at least a mirror (13), a focusing lens (14), and lens-moving elements. The movable part is adapted...

20050265141 - Optical pick-up actuator and method, and reproducing and/or recording apparatus with same: An actuator for an optical pick-up, including: a holder fixed to a base; a bobbin capable of accommodating a plurality of objective lenses for recording and/or reproducing information onto and/or from optical discs with different recording densities; a suspension for connecting the bobbin and the holder, and supporting the bobbin...

20050265140 - Power and thermal management for a hard drive: According to certain embodiments of the present invention, a data storage device is provided. The exemplary data storage device includes actuation mechanism control circuitry configured to selectively operate an actuation mechanism at first and second performance levels, wherein the first performance level accesses data from a data storage medium at...

20050265143 - Optical head device: An optical head device may include an objective lens drive device for driving an objective lens, an optical path defining optical system which defines an optical path directing to the objective lens from the light source and an optical path directing to a light receiving element from the objective lens,...

20050265144 - Optical disk apparatus: The quantity of spherical aberration correction is predetermined for each recording plane of an optical disk on which focusing control is performed. Before operating the focusing control, the quantity of spherical aberration to be corrected by an aberration correcting system is set based on an output signal from an aberration...

20050265145 - Disk drive and method of controlling position of the pickup: An optical disk includes a label recording surface capable of recording a visible image using laser beam, and an information recording surface on which information is formed as marks on a track. Settings of circuit elements such as a switching unit and a digital equalizer included in a tracking control...

20050265146 - Optical disc reproduction device and tracking control method applied to an optical disc reproduction device: For automatic adjustment of tracking balance, a microprocessor controls a servo control unit to adjust a tracking balance signal value for the optical disc reproduction to be a mid-value between a tracking balance signal value (hereafter referred to as first tracking balance signal value) to make a tracking error balance...

20050265147 - System and method for measuring signal deviation used in an optical recording/reproducing apparatus: A method and system for measuring the signal deviation are applied to an optical recording/reproducing apparatus. The optical recording/reproducing apparatus comprises an optical pickup head for receiving Differential Push Pull (DPP) signals reflected from an optical recording medium to trace the tracks on the surface of the optical recording medium....

20050265148 - Method and optical disk drive for promptly protecting voice coil motor thereof from over current: The invention is disclosed a method for promptly protecting a voice coil motor in an optical disk drive. A step (A) allows a data signal processor (DSP) to execute a protect module of the voice coil motor every preset time interval. In a step (B), the DSP executes following further...

20050265149 - Optical disk system with non-linearly controlled amplifier: Optical disk systems comprising photo detectors (1) with variable gain amplifiers (10) and slicers (11) are provided with generators (12) in feedback paths between slicer (11) and amplifier (10) for controlling said amplifier (10) non-linearly. As a result, time constants of the control loop of said amplifier (10) which depend...

20050265150 - Objective optical element and optical pickup apparatus: An objective optical element for use in an optical pickup apparatus having: a first light source for emitting a first light flux; a second light source for emitting a second light flux; an objective optical element, the objective optical element includes: an optical surface including a common area and an...

20050265151 - Objective optical system, optical pickup apparatus and optical disk drive apparatus: An objective optical system for use in an optical pickup apparatus which reproduces and/or records information on an information recording surface of first-third optical disks, the objective optical system includes a first optical element, a first part comprising a material A, a second part comprising a material b, wherein the...

20050265152 - Optical pickup and optical information processing apparatus: An optical pickup performing recording, reproduction and deletion of information on or from an optical recording medium. The pickup includes light sources for information recording media using a blue wavelength beam, information recording media of DVD family and information recording media of CD family. A single object lens may be...

20050265153 - Tracking system and method: Tracking system for guiding an optical beam on tracks on an optical disc, said tracking system comprising a photodetector (A1, A2) for detecting optical beams derived from said optical beam, said photodetector generating a first output signal (A) and a second output signal (B), said tracking system comprising first processing...

20050265159 - Digital information reproducing apparatus and method: High audibility output is realized when audio output is provided in special playback. In special playback with audio output, skip/repeat control is done so that decoding and outputting of the audio data is periodically repeated/skipped during part of one frame. The output level may be corrected so as to emphasize...

20050265160 - Disk information display device: A disk information display device capable of displaying display data responding to the operation of operating part in a complete and in real time, the disk information display device includes: a disk information acquiring unit for acquiring information recorded on a disk; an operating part for making a request to...

20050265162 - File system, file recording method, and file reading method: A file system is capable of reading and writing a large amount of stream data, such as digital video/audio data, in real time, and is also capable of efficiently dealing with a normal data file of a small size. In the file system, realtime stream data is recorded in a...

20050265161 - Method of reproducing multimedia data using musicphotovideo profiles and reproducing apparatus using the method: A method and apparatus for reproducing multimedia data using a MusicPhotoVideo (MPV) profile. The method for reproducing multimedia data using a profile complying with the MPV standard, includes: detecting a reference element indicating that a predetermined profile among a plurality of supported profiles is used, in an MPV document; updating...

20050265155 - Optical disc apparatus: An optical disc apparatus has a disc motor which rotates an optical disc, a pickup which has a laser element driven by a drive current and irradiates the optical disc with a laser beam, a plurality of signal lines which transfers control information of the drive current to the pickup,...

20050265156 - Optical disc label recording method and apparatus using this method: A label position where a label is to be recorded is determined. Information of digital contents is recorded by a normal method at a position other than the label position on the information recording surface of a disc. On the other hand, information of the label is recorded at the...

20050265154 - Optical disk apparatus and optical-disk image forming method: An optical disk apparatus has a rotation section rotates an optical disk having a photoimageable layer that is made imageable by laser light, a pickup section having a laser radiation section, a driving section of the pickup section, an irradiation driving section supplies a driving current in a continuous pulse...

20050265157 - Optical disk apparatus and optical-disk image forming method: An optical disk apparatus comprises a rotation section which rotates an optical disk having a photoimageable layer that is made imageable by laser light, a pickup section having a laser radiation section, a driving section for the pickup section, an irradiation drive section for the laser radiation section, an input...

20050265158 - Optical disk apparatus and optical-disk image forming method: An optical disk apparatus has a rotation section which rotates an optical disk having a photoimageable layer, a pickup section having a laser radiation section which irradiates the laser light onto the photoimageable layer, a driving section for the pickup section, an irradiation driving section which supplies a driving current...

20050265164 - Recording and reproducing apparatus and recording and reproducing method: A recording and reproducing apparatus comprises a communication section which acquires content information from an external device via a network, a recording section which records in a storage region the content information, and a control section which, after it has been detected that the content information stored in the recording...

20050265163 - Recording method, information recording medium, reproducing method, information recording device, and information reproducing device: A recording method for recording information into an information recording medium having a plurality of recording layers includes a step of recording information, for specifying a non-recording layer where user data are not recorded, onto at least one of the recording layers....

20050265167 - Reproducing device or recording/reproducing device or video display device incorporating reproducing device or recording/reproducing device: During an off-timer function operation, when reproduction of contents is detected (step 201), a contents reproducing time is calculated from TOC information (step 203, step 204), and when this contents reproducing time is shorter than a timer remaining time X of the off-timer, the timer time is regarded as a...

20050265166 - Reproduction device: A reproducing apparatus includes a reproducing section picking up any signals compressed in a plurality of different compression methods from a recording medium. The recording medium records the signals compressed in a plurality of different compression methods and record management information denoting association of the signals compressed in a plurality...

20050265168 - Apparatus and method for copying data: The present invention relates to an apparatus for copying the data content of a source multi-session DVD-storage medium to a destination multi-session DVD-storage medium, wherein the data content is organized in sessions and files, and each session contains a file allocation table storing at least the physical start address of...

20050265169 - Recorder equipped with dubbing function: A recording condition and a dubbing condition of a desired program that is to be broadcast are designated by using a remote controller. These conditions are stored in the information storage unit. In accordance with the recording condition, a controller permits a tuner to receive a program for which unattended...

20050265170 - Method for determining defective blocks of optical disc: In a method for determining defective blocks of an optical disc, a defect-detection procedure for each block of the optical disc is performed. After the defect-detection procedure, a preliminary defective group of the optical disc is realized. Subsequently, the track number between two selected defective blocks of the preliminary defective...

20050265171 - Optical disc recording system: An optical disc recording system includes a host apparatus configured to issue commands; and an optical disc recording apparatus configured to carry out a process corresponding to each of the commands, and to reply a response data to the command to the host apparatus. The host apparatus issues a record...

20050265172 - Multi-channel audio/video system and authoring standard: A multimedia format for karaoke includes a first channel featuring a first performance of a song that is playable through a first speaker, a second channel featuring a synchronized second performance of the song that is playable through a second speaker, and a video channel featuring music information of a...

20050265173 - Optical reproducing method for optical medium with aligned prepit portion: A recording method for an optical recording medium having grooves and lands alternately provided in a radial direction and information recording areas formed thereon, and at least one prepit region where a groove is not formed. In the prepit region, first and second information marks are disposed on a virtual...

20050265174 - Optical reproducing method for optical medium with aligned prepit portion: A reproducing method for reproducing information from an optical recording medium having an aligned prepit portion straddled on a plurality of tracks in a radial direction, the prepit portion including first and second prepit portions divided in a track direction and arranged on a boundary line of the respective tracks....

20050265175 - Optical reproducing method for optical medium with aligned prepit portion: A reproducing method for reproducing information recorded on an optical recording medium having an aligned prepit portion straddled on a plurality of tracks in a radial direction, the prepit portion including first and second prepit portions divided in a track direction and arranged on a boundary line of the respective...

20050265176 - Optical reproducing method for optical medium with aligned prepit portion: A recording method for an optical recording medium having an aligned prepit portion straddled on a plurality of tracks in a radial direction, wherein the prepit portion includes first and second prepit portions divided in a track direction, and wherein a prepit of the respective first and second prepit portions...

20050265177 - Fully automatic control method of spindle motor of optical disc drive: A fully automatic control method of a spindle motor of an optical disc drive detects a firmware value stored in the optical disc drive; sets a fully automatic control mode of the spindle motor of the optical disc drive; receives a signal of the spindle motor of the optical disc...

20050265178 - Hybrid switching method of spindle motor of optical disc drive: A hybrid switching method of spindle motor of optical disc drive analyze a disc position status for write/read in said optical disc drive, according said optical disc drive speed to detect a switch mode, and determine said optical disc drive of write/read mode to got a switch point....

20050265179 - Optical disk apparatus and rotation speed control method thereof: An optical disk apparatus is disclosed which can suppress excessive reduction of recording speed on the inner side of a disk and that can assure quick response of accessing operation. When, at the time of access, a write or read operation is performed while returning to a second disk radial...

20050265180 - Optical disk apparatus: An optical disk apparatus comprises a controller that outputs a rotation control signal to rotate an optical disk medium rotating motor in a predetermined direction to a drive section that drives the rotating motor; and a determining section that determines whether the rotation control signal has been continuously output for...

20050265181 - Method and apparatus of adjusting phase of a sampling clock and prediction timing of a synchronization signal through a disc signal: A detection apparatus of an optical storage device for detecting a synchronization signal includes a sampling module for sampling a disc signal to generate a plurality of sampled data, a comparing module coupled to the sampling module for comparing the sampled data and a synchronization pattern to generate a first...

20050265165 - Information-recording method and information-recording medium: An information-recording method includes the steps of moving a light beam at a selected linear velocity relative to the information-recording medium; controlling the light beam to generate a multi-pulse having at least three power levels of a first power level Ph, a second power level P1 which is lower than...

20050265182 - Method for generating control parameters for optimum write power and apparatus therefor: In a method and apparatus for generating optimum write power, a control unit controls a write voltage generating unit to generate sequentially write voltages of different levels to drive an optical read/write head to generate different write powers so as to write data on a plurality of write intervals of...

20050265183 - Optical information recording apparatus: There is provided an effective inspection technique of recording quality decided by a combination of a drive and a media. A standard media as a quality standard for various media is recorded and reproduced for each drive, thresholds obtained by multiplying a characteristic value obtained as a result of the...

20050265184 - Optical information recording apparatus: An optical information recording apparatus is suitable for detection of deviation between a strategy and a record pattern. Test record is performed on an optical recordable medium using a predetermined strategy. A binarization signal that is obtained by reproducing the test record result is counted. A pit length and a...

20050265186 - Apparatus and method for providing uninterrupted continuous play during a change of sides of a dual-sided optical disk: An apparatus and method for providing continuous uninterrupted playback of a dual sided optical disk during side-to-side changing of the optical disk. The point at which a dual-sided optical disk will be switched between sides is determined. At some point prior to the switching of sides of the disk, a...

20050265185 - Optical disc apparatus and information playback method: An optical disc apparatus in this invention includes an offset control unit which selects a parameter in accordance with the type of optical disc, and executes signal processing (offset control) by using the selected parameter....

20050265191 - Information recording medium, recording/reproducing method, and recording/reproducing apparatus: An information recording medium, a method of recording and/or reproducing data to/from the medium, and a recording/reproducing apparatus using the medium, the medium having a data area including a user data area to record user data, and a spare area to record replacement blocks that replace defect blocks occurring in...

20050265192 - Optical disc drive apparatus, method for measuring tilt of an optical disc, and method for correcting tilt of an optical disc: Tilt (θ(r, φ)) is measured in a measuring location (P(r, φ) optical disc (2). A pivotable objective lens (34) is brought to a first focus measuring location such as to focus a light beam (32) in a first anchor point (P1(r−Δr1, φ))having the same angular coordinate φ as said measuring...

20050265188 - Method and apparatus for determining type of digital versatile disc: A method and an apparatus for determining types of digital versatile discs (DVDs) are provided. The method includes setting related parameters, acquiring a wobble signal from a DVD, setting a frequency dividing factor, and dividing the frequency of the wobble signal by the frequency dividing factor. Then, the time required...

20050265187 - Method for determining the type of digital versatile disc: A method for determining the type of a digital versatile disc (DVD) so that a DVD+ can be distinguished from a DVD−. The main steps for determining the type of a DVD include setting up related parameters, reading a general wobble signal or a wobble signal within the general wobble...

20050265189 - Method for determining type of digital versatile discs: A method for determining the type of digital versatile discs (DVDs) is provided, for distinguishing among a read only memory (ROM) DVD, a recordable DVD and a re-writable DVD. The method includes reading a tracking error signal from a DVD. If the amplitude of the tracking error signal is greater...

20050265190 - Recording apparatus: A recording apparatus according to the present invention includes an input unit for inputting information data, a recording unit for recording the inputted information data on a recording medium, a record remaining capacity detecting unit for detecting that the remaining capacity for recording on the recording medium is equal to...

20050265193 - Method and apparatus to inhibit copying from a record carrier: A technique to prevent illicit copying of a copy-protected CD-ROM into a computer-readable storage drive is presented. In accordance with the present invention, when an authentic copy-protected CD-ROM is inserted into a CD drive and the content of the copy-protected CD-ROM is installed onto a hard disk drive that is...

20050265194 - Device and method of polynomial power control for optical drives: The present invention provides a device and method of polynomial power control for optical drives, which is capable of controlling the laser power discharged from the optical pickup head basing on a quadratic curve fitted on a profile of constant liner velocity values and laser powers of optical pickup head....

20050265196 - Information recording medium, information recording method and information recording apparatus: A recording medium having a dummy signal area on at least one side of a recording area is used and information is recorded with a dummy signal added to at least one of the leading and trailing sides in the recorded information signal. The user data area remains unaffected by...

20050265195 - Recording apparatus and method: Disclosed is a recording apparatus capable of recording image data on a removable recording medium having a plurality of partitions. The apparatus includes a partition recognition unit (1001) for recognizing partitions of a loaded recording medium; a recording/playback unit (105) for selectively recording on any partition of the recording medium;...

20050265197 - Method of and apparatus for recording information: A method of recording information in which each recording mark is formed in a recording medium, by irradiating a pulse chain of an energy beam including a first pulse, a middle pulse chain, a last pulse and a negative pulse following the last pulse. The adjusting average power of the...

20050265198 - Detector and method for detecting synchronization signals in disc system: A detector and a method for detecting synchronization signals in a disc system are disclosed. The method includes sampling a disc signal with a sampling clock to generate a plurality of sampled data, comparing the plurality of sampled data with a predetermined synchronization pattern to generate a comparison result, performing...

20050265199 - Information recording medium recording method, information recording/playback apparatus, and information recording medium: In an information recording medium recording method, recording is interrupted, in recording on an information recording medium, when a predetermined interruption condition is met. A signal recorded in a recorded area is played back and a recording signal playback waveform signal is obtained. Error information indicating an error between a...

20050265200 - Laser noise cancel circuit and optical disk device: Disclosed herein is a laser noise cancel circuit for reducing laser noises in a reproduction system for an optical disk device including, a gain-variable amplifying noise cancel circuit for amplifying a monitor output signal for laser light, a first low-pass filter for extracting low frequency signal components of a monitor...

20050265201 - Integrated type light-emitting and light-receiving element, optical pickup device for optical information medium and optical disc apparatus: An integrated type light-emitting and light-receiving element includes a polarizing hologram and this polarizing hologram introduces returned light into a second photo-detecting unit for detecting an RF information signal independently of a first photo-detecting unit into which returned light is introduced through a micro-prism, whereby the number of amplifiers in...

20050265202 - Optical pick-up system for use in an optical disk device including use of improved gratings with more efficient beam diffraction: The present invention is an optical pick-up system for use in an optical disk device including more efficient beam diffraction for tracking purposes. The system may be used for one or more types of optical disks (e.g., DVDs, CDs, CD-ROMs). The invention includes a system for use in a DVD...

20050265203 - Optical pickup unit requiring no phase adjustment: In an optical pickup unit including a diffraction grating for separating an incident beam from a laser diode into a main beam, first and second sub beams, the diffraction grating separates the incident beam into the first and the second sub beams so that each of the first and the...

20050265204 - Optical head device: An optical head device for performing at least one of recording and reproduction of information on and from an optical recording disk provided with two or more recording layers includes a laser beam emitting element as a light source and a diffraction element for forming a main beam comprising of...

20050265205 - Method for real-time adjustment of servo gain in an optical recording system according to reflected recording light beam: An optical recording system includes an optical pickup, a power auto-control device, and a digital signal processor. The optical pickup includes a laser diode and a photo detector. The power auto-control device generates a drive voltage for driving the laser diode to generate a recording light beam incident upon an...

20050265206 - Optical disc reproducing device and optical disc reproducing method: As an aperture diaphragm of an optical disc, the aperture diaphragm in which an aperture differs for a first and a second wavelength, and the aperture in a radial direction of the optical disc at the second wavelength is smaller than the aperture in a circumferential direction is used. By...

20050265207 - Optical pickup and optical disc apparatus: An optical pickup housing an optical system including a collimator lens for converting laser light incident on the collimator lens into an approximately parallel light beam, and an objective lens for receiving the laser light converted into the approximately parallel light beam and focusing the laser light onto a recording...

20050265209 - Electroluminescent multilayer optical information storage medium with integrated readout and composition of matter for use therein: An optical information storage medium has multiple information layers. On each layer, information is stored in the form of an electroluminescent material. The pits are organized into regions called pages. A specific page on a specific layer can be addressed through electrodes integrated into the medium. The medium can be...

20050265208 - Optical disk, optical disk apparatus, and method of optimizing focus: An information recording type optical disk capable of recording a visible image by use of laser beam, including a disk substrate including an information recording layer in which marks indicating information are recorded by the laser beam, a label recording layer which is formed on the disk substrate and which...

20050265211 - Optical disk and optical disk apparatus: An optical disk is an information recording type optical disk capable of recording a visible image on one surface, and includes a disk substrate including an information recording layer in which a mark indicating information is recorded by laser beam, and a label recording region capable of recording the visible...

20050265210 - Optical disk, optical disk apparatus, and image recording method: An information recording type optical disk capable of recording a visible image by use of laser beam, including a disk substrate including an information recording layer on which recording marks indicating information is formed by the laser beam, a label recording layer which is formed on the disk substrate and...

20050265213 - Optical information recording medium: To provide an optical information recording medium on which visual information can be recorded on a label face side by using a laser apparatus for recording and reading electronic information by irradiation with a low output laser without exerting, e.g. thermal influence over electronic information recorded on the medium. The...

20050265212 - Write once recording medium, recording device and recording method for write one recording medium, and reproduction device and reproduction method for write once recording medium: A temporary defect management area 14 is placed between a control information recording area 12 and a data area 11. Before a recording medium 10 is finalized, defect management information is temporarily recorded into the temporary defect management area. Upon finalizing, the defect management information is recorded into a definite...

20050265214 - Optical storage medium, optical recording method and optical recording apparatus: A phase-change optical storage medium has a substrate and a recording layer having a plurality of tracks for storing information. A material of which the recording layer is made has been initialized in a crystalline state in which an amplitude of a tracking-detection signal is smaller than a saturation value...

20050265215 - Phase-change recording material used for information recording medium and informatin recording medium employing it: wherein each of x, y, z and w represents atomicity, x, z and w are numbers which satisfy 0.01≦x≦0.5, 0≦z≦0.3 and 0≦w≦0.1, respectively, and the element M1 is at least one element selected from the group consisting of In, Ga, Pt, Pd, Ag, rare earth elements, Se, N, O, C,...

20050265216 - Optical reproduction method, optical pickup device, optical reproduction device, and optical recording medium: An optical reproduction method is provided that is able to increase recording capacity of an optical recording medium by combining the techniques of light wavelength reduction, signal level multiplication, and recording layer multiplication in an optical recording medium. In the optical reproduction method for reproducing signals based on light reflected...

20050265217 - Optical recording medium and information recording/playback apparatus: In an example of the present invention, an optical recording medium includes the first substrate on a light beam incident surface side, the second substrate on an opposite side to the light beam incident surface side, the first recording layer which is arranged between the first and second substrates, the...