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Dynamic information storage or retrieval February patent applications/inventions, industry category 02/10

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
02/25/2010 > patent applications in patent subcategories. patent applications/inventions, industry category

20100046331 - Planer plasmon antenna, thermally assisted magnetic head and hard disk drive: A planar plasmon antenna is formed on a YZ plane including a Z-axis, the Z-axis being a propagation direction of excitation light for near-field light generation. The longitudinal direction of the planar plasmon antenna is oblique relative to the Y-axis, and the angle of a corner of the planar plasmon... Agent: Oliff & Berridge, PLC

20100046332 - Signal processing device for optical disks and optical disk apparatus: A signal processing device for optical disks includes a reflected light process section configured to convert reflected light received by an optical pickup into an electric signal based on a first gain, wherein the optical pickup emits laser light to an optical disk and receives reflected light from the optical... Agent: Mcdermott Will & Emery LLP

20100046333 - Optical information recording medium and optical information processing apparatus: Information is recorded as marks and spaces coded by RLL(1, 7) modulation, which each of the marks and spaces have one of a plurality of lengths, and 2T marks and 2T spaces of the marks and spaces being formed are shorter than 0.12 μm. An information recording layer (20) includes... Agent: Edwards Angell Palmer & Dodge LLP

20100046336 - Information recording medium, recording apparatus, reproduction apparatus, recording method and reproduction method: An information recording medium is provided that includes a data area for recording user data and a defect management area for recording a defect list for managing N number of defect areas existing in the data area, where N is an integer satisfying N≧0. The defect list includes two or... Agent: Mark D. Saralino (pan) Renner, Otto, Boisselle & Sklar, LLP

20100046335 - Method of managing overwrite and method of recording management information on an optical disc write once: A device and method of reproducing and/or recording data onto a write once recording medium, the recording medium having a data area and a management area, the data area having a spare area. The recording method include: performing a replacement-recording by recording data requested to be recorded in a specified... Agent: Birch Stewart Kolasch & Birch

20100046338 - Optical disc apparatus, focus position control method and recording medium: An optical disc apparatus can highly accurately record a hologram representing information on or reproduce such a hologram from an optical disc. When recording information on an optical disc 100, the optical disc apparatus controls the position of an objective lens OL1 according to the outcome of detection of a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100046339 - Optical disc recording/reproduction apparatus:

20100046337 - Recording apparatus, recording method, program, and recording medium: The present invention relates to a recording apparatus, a recording method, a program, and a recording medium whereby data is reproduced from a two-layer optical disk that has yet to be formatted completely. A control section 51 divides a recording area of a layer L0 of the optical disk 33... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20100046334 - Recording method, recording medium and storage device: A recording method includes multiplexing data and continuously recording multiplexed data in a continuous recording region of a recording medium having a random recording region, and recording management information about multiplexing and recording in the random recording region.... Agent: Greer, Burns & Crain

20100046340 - Optical drive device and amplification rate determining method: An optical drive device generates a fist push-pull signal and a first sum signal based on a light receiving amount in two light receiving areas of which each width in a signal light tangent direction is smaller than a diameter of a spot of signal light, generates a first normalized... Agent: Young Law Firm, P.C. Alan W. Young

20100046341 - Additionally recordable information recording medium, information recording method, information reproducing method, information recording apparatus and information reproducing apparatus: An additionally recordable information recording medium has a complicated management structure for managing an unrecorded area. Therefore, there are problems that it takes a long time for a disk to startup and it is difficult to build a recording/reproducing system. The additionally recordable information recording medium according to the present... Agent: Mark D. Saralino (pan) Renner, Otto, Boisselle & Sklar, LLP

20100046342 - Recording and replaying device: A recording and replaying device is provided in which a user can easily diagnose failure when a built-in storage device of the device fails. In a normal operation state, a microcomputer controls a signal path switching mechanism to connect a signal processing device and a hard disk drive (HDD). In... Agent: Christensen, O'connor, Johnson, Kindness, PLLC

20100046343 - Foldable portable electronic device and system and method for protecting hard disk: A foldable portable electronic device, a system and a method for protecting a built-in hard disk thereof are disclosed. The foldable portable electronic device includes a display and a main body. The system includes a trigger, a lid switch, and a logic judgment module. When the foldable portable electronic device... Agent: Rosenberg, Klein & Lee

20100046346 - Optical information recording medium and method for manufacturing the same: An optical information recording medium of the present invention includes at least a recording layer (4) that allows information to be recorded thereon and/or reproduced therefrom by being irradiated with a laser beam, and a transmittance adjusting layer (7) in this order from an incident side of the laser beam... Agent: Hamre, Schumann, Mueller & Larson P.C.

20100046345 - Optical information recording medium, optical information recordng apparatus, and optical information recording method: An optical information recording medium includes a recording layer in which a track is formed, the track having recording marks linearly arranged thereon. Each recording mark has a dimension corresponding to a reference mark length, which serves as a reference, in a track direction along which the track extends, the... Agent: Wolf Greenfield & Sacks, P.C.

20100046344 - Optical recording medium and method of recording visible information: The present invention relates to an optical recording medium comprising a visible information recording layer on a support. The visible information recording layer comprises a given dye. The optical recording medium may further comprise a recording layer capable of recording and/or reproducing information by irradiation of a laser beam. The... Agent: Sughrue Mion, PLLC

20100046349 - Fabrication method of multilayer optical record medium and recording apparatus for multilayered optical record medium: A fabrication method of a multilayer optical recording medium having a plurality of recording layers, comprises a step of preparing an optical recording medium having at least one record area; a write-position mark generating step of recording write-position marks in the record area beforehand; a step of preparing an optical... Agent: Drinker Biddle & Reath (dc)

20100046348 - Optical module, optical communication device using the same and reflective optical path setting method: An optical module having a laser element which emits a laser beam, include an optical path setting material which reflects a part of the laser beam in a predetermined direction; and a shield element which blocks the laser beam that is reflected by the optical path setting material.... Agent: Mr. Jackson Chen

20100046347 - Optical scanning device: An optical scanning device for scanning optical record carriers, the optical record carriers including a first optical record carrier, a second optical record carrier and a third optical record carrier, the scanning device including a radiation source system (7) for producing first, second and third radiation beams for scanning said... Agent: Philips Intellectual Property & Standards

20100046350 - Recording/reproducing apparatus: A recording/reproducing apparatus (100) is provided with: a first substrate (41) on which a recording medium (43) is mounted; and a second substrate (21) to which a recording/reproducing head (23), which performs information recording and information reproduction on the recording/reproducing medium is fixed, wherein the second substrate is relatively displaced... Agent: Nixon & Vanderhye, PC

20100046351 - Copper residual stress relaxation reduction means for hard disk drive slider gimbals: Disclosed are various techniques for reduction of the magnitude of the residual stress in the HDD gimbal circuits, or more specifically, the residual plastic strain. Various trace structures of the gimbal circuits as well as stress suppressors are utilized to achieve the reduction of the residual stress in the circuit.... Agent: Sughrue Mion, PLLC

20100046352 - Method of manufacturing a limited use data storing device: Embodiments of methods and systems for controlling access to information stored on memory or data storage devices are disclosed. In various embodiments, methods of retrieving information from a data storage device previously deactivated by modification or degradation of at least a portion of the data storage device are disclosed.... Agent: Searete LLC Clarence T. Tegreene

20100046353 - Optical recording medium, optical head device and optical information recording/reproducing device: Light output from a laser is split into a first beam which is reflected light and a second beam which is transmitted light, by a polarization beam splitter. The polarization directions of the first beam and the second beam are orthogonal to each other. A disk includes a recording layer,... Agent: Young & Thompson

20100046354 - Optical disk: The invention provides an optical disk that enables high-speed reproduction of address signals. A wobble address system for optical disk supports various types of synchronization, such as phase synchronization, bit synchronization, word synchronization, etc., to be established easily with high detection reliability with the use of an self-orthogonal code. Thus,... Agent: Stites & Harbison PLLC

  
02/18/2010 > patent applications in patent subcategories. patent applications/inventions, industry category

20100039906 - System and method for converting a cd collection to a different media or format: A computer system and method is disclosed that transfer collections of CD's and/or DVD's containing audio and/or video to a digital format in an automated fashion. A computer system and method is disclosed that includes a computer, computer accessible media changer, and one or more CD/DVD information databases. Media changer... Agent: Woodard, Emhardt, Moriarty, Mcnett & Henry LLP

20100039909 - Host initiated background formatting of optical medium: A method and a host processing device are provided for background formatting, or de-icing, an optical medium with no de-icing assistance from an optical drive upon which the optical medium is mounted. In a foreground mode, an optical medium may be initially formatted, volume structures may be recorded on the... Agent: Microsoft Corporation

20100039910 - Apparatus for recording/reproducing data from a data are including a spare area for defect management allocated in reverse order from rearmost units of data area: A recording medium having a spare area for defect management, and a method and apparatus for allocating and assigning the spare area. A plurality of zones are formed as one group without prescribing the relationship between a zone and a group. Spare areas include a spare area for slipping replacement... Agent: Stein Mcewen, LLP

20100039908 - Automatic power control system for optical disc drive and method thereof: A method for calibrating an initial driving signal for driving an optical pick-up head of an optical disk drive is provided. On one embodiment, said optical disk drive is utilized for reading or writing data on an optical disk, the optical disk comprises a plurality of auto power control areas... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20100039907 - Optical disk device: An optical disk device includes a first control circuit controlling a light quantity of a semiconductor laser according to a first light quantity set value corresponding to a first light quantity resolution; a second control circuit controlling the light quantity of the semiconductor laser according to a second light quantity... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20100039912 - Optical information recording/reproducing unit and method of measuring recorded-mark quality: An equalizer (22) performs a PR equalization of a reproduced signal waveform output from an A/D converter (21). A reference-waveform generation unit (42) generates a reference reproduced-waveform based on a recording data train estimated from the reproduced signal waveform by a recognition unit (30). An equalization-error calculation unit (43) calculates... Agent: Mr. Jackson Chen

20100039913 - Method for performing servo defect compensating operation by compensating servo-related signal derived from reading optical medium and related optical disc drive system with dsp: A method for performing a servo defect compensating operation by compensating a servo-related signal in an optical disc drive and a related optical disc drive system with a DSP is provided. The method comprises: reading an optical medium by an optical pick-up unit; detecting whether a defect exists by monitoring... Agent: North America Intellectual Property Corporation

20100039911 - Information recording method and information recording apparatus: A recording method for irradiating a multi-layered optical recording medium with a laser beam to record information thereon. The optical recording medium can form a first information recording layer that is the farthest from a light incident surface, a second information recording layer that is the second farthest from the... Agent: Mathews, Shepherd, Mckay, & Bruneau, P.A.

20100039914 - Anti-piracy optical disc: An anti-piracy optical disc has a parent disc and a sub-disc. The parent disc has a hole and a first identification characteristic. The hole is formed through a central region of the parent disc. The sub-disc is removably and matchingly mounted in the hole of the parent disc and has... Agent: Hershkovitz & Associates, LLC

20100039915 - Information processing device, data processing method, and program: An information processing device includes: a local memory unit storing data including encrypted content; a memory storing data including key information to be used in a process of reproducing the encrypted content; and a data processing unit selectively reproducing encrypted content stored in a disk or the local memory unit,... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100039916 - Control device, laser irradiation device, optimization font data database, recording method, and computer-readable storage medium: A control device controls a laser irradiation device to record visible information on a medium by irradiation of a laser beam. The control device includes a drawing information storage unit which stores drawing information of line segments contained in line images of characters, numbers, and symbols. A drawing information acquiring... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100039917 - Optical information detection method, optical pickup, and optical information recording and reproducing apparatus: An interference-type optical pickup, an optical information detection method, and an optical information recording and reproducing apparatus, which allow easy adjustment of a path difference between two lights, have a high signal amplification effect and are suitable for size reduction of an optical system, are provided. A signal light reflected... Agent: Antonelli, Terry, Stout & Kraus, LLP

20100039918 - Hologram recording/reproducing device, method thereof, and holographic recording medium: A hologram recording/reproducing device includes an optical section which irradiates a holographic recording medium with an optical beam; and a control unit which controls the optical section. The optical section includes a laser light source which emits the optical beam, and a spatial modulator which modulates the optical beam. By... Agent: Robert J. Depke Lewis T. Steadman

20100039919 - Cantilever structure for use in seek-and-scan probe storage: An information storage device comprises a media including a ferroelectric layer formed over a conductive layer, a tip substrate including a bottom actuation electrode, the tip substrate arranged opposite the media, and a cantilever connected with the tip substrate at a fulcrum and actuatable toward the media. The cantilever includes... Agent: Fliesler Meyer LLP

20100039920 - Identification based production and further processing method of an optical product, e.g. a lens of a mobile phone, for verifying genuineness and traceability of a device which includes an optical product: A method for producing an optical product, such as a lens of a mobile phone, wherein in the production and further processing method an identifier (2) identifying the product is achieved, by which the genuineness of the product is verifiable.... Agent: Young & Thompson

20100039921 - Information recording medium and information recording apparatus: An information storage medium according to the present invention has n information storage layers (where n is an integer and n≧3), on which data can be written with a laser beam and which are stacked one upon the other. Each of the n storage layers has a test write zone... Agent: Mark D. Saralino (pan) Renner, Otto, Boisselle & Sklar, LLP

20100039922 - Metal alloys for the reflective or the semi-reflective layer of an optical storage medium: A silver-based alloy thin film is provided for the highly reflective or semi-reflective coating layer of optical discs. Elements that can be added to silver to produce useful silver alloys include zinc, aluminum, copper, manganese, germanium, yttrium, bismuth, scandium, and cobalt. These alloys have moderate to high reflectivity and reasonable... Agent: Target Technology Company, LLC

  
02/11/2010 > patent applications in patent subcategories. patent applications/inventions, industry category

20100034058 - Addressing disc storage space using head position: Current BD specification prescribes that in an ADIP an address is expressed with 21 bits, 19 to indicate the corresponding RUB number, and 2 to be set to 00, 01 and 10 consecutively in the 3 successive ADIP corresponding to one RUB, the smallest addressable portion of data on a... Agent: Philips Intellectual Property & Standards

20100034059 - Disk recording medium, disk drive apparatus, reproduction method, and disk manufacturing method: A recording and reproducing area and a reproduction-only area are formed by wobbling a groove formed in a spiral fashion to form a track to be tracked on a disk. The recording and reproducing area has address information recorded by wobbling of the groove and information recorded and reproduced by... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100034060 - Optical disc comprising a watermark and a method and recorder for recording such a disc: A visible pattern is obtained by modulating the digital sum value. Because the digital sum value modulation allows the choice of several different channel bits groups between DC control points, the selection of a group of channel bits resulting in a change of reflection. This creation of a visible pattern... Agent: Philips Intellectual Property & Standards

20100034061 - Optical storage apparatus and control chip for accessing an optical disc and method thereof: An optical storage apparatus includes an optical pickup head, a drive module, a spherical aberration compensator, and a controller module. The drive module is coupled to the optical pickup head for performing a predetermined operation associated with the optical pickup head. The spherical aberration compensator is coupled to the optical... Agent: North America Intellectual Property Corporation

20100034062 - Tracking apparatus for optical information reproduction apparatus: A tracking apparatus for an optical information reproduction apparatus includes the following: a photoelectric detector (1) in which a far-field pattern of a light spot converged on a recording medium is formed across a divided light-receiving cell; an arithmetic unit (2) for outputting at least a pair of arithmetic signals... Agent: Hamre, Schumann, Mueller & Larson P.C.

20100034063 - Disklike recording media, a method for detecting forged disks, an anti-forgery system for performing a true-false judgement based on information collected from the recording media, and a manufacturing apparatus for recording information in the disks: A recording medium includes first information selected from a plurality of information patterns and second information selected from another plurality of information patterns for the true-false judgement. A true-false judging device performs a statistic analysis when any coincidence is found between the readout combination of the first and second information... Agent: Louis Woo Law Office Of Louis Woo

20100034064 - Optical disk device and optical disk processing system: An optical disk device which flexibly and efficiently executes verification of recorded data is provided. A drive controller sets an area to be verified and a mode of verification according to a command which is supplied from a host device. For the area to be verified, the user selects one... Agent: Christensen, O'connor, Johnson, Kindness, PLLC

20100034065 - Rotation responsive disk activation and deactivation mechanisms: Embodiments of methods and systems for controlling access to information stored on memory or data storage devices are disclosed. In various embodiments, fluid-mediated modification of information or access to information is utilized. According to various embodiments, data storage devices designed for rotating access are described which include rotation-activated fluid control... Agent: Searete LLC Clarence T. Tegreene

20100034066 - Method for adjusting recording power and optical disk apparatus: A method for adjusting recording power of an optical disk apparatus having an output circuit that outputs recording light onto a test writing area of an optical disk, and a control circuit that adjusts the recording power of the recording light outputted from the output circuit, the method including the... Agent: Antonelli, Terry, Stout & Kraus, LLP

20100034067 - Information recording method and information recording apparatus: Information is recorded on a multi-layered optical recording medium by irradiating it with a laser beam. The recording medium can form a first information recording layer that is the farthest from a light incident surface, a second information recording layer that is the second farthest from the light incident surface,... Agent: Mathews, Shepherd, Mckay, & Bruneau, P.A.

20100034068 - Protected storage of data on optically-readable media: Protection is provided for optically readable media. Data may be scrambled, encrypted, or otherwise obscured by apportioning the data across multiple layers of a disc in a secret pattern. Pattern information may be supplied in the form of a key to authorized devices or users. The data can only be... Agent: Streets & Steele - IBM Corporation

20100034069 - Method for controlling focus loop of an optical storage device: A method for controlling focus loop of an optical storage device includes: moving a lens of an optical pick-up head in a first moving direction; performing a focusing operation when a first S-curve sequence appears in a focus error signal; and when a light beam generated from the optical pick-up... Agent: North America Intellectual Property Corporation

20100034070 - Optical pickup device and laser welding structure of optical components: To provide a reliable optical pickup device, a pickup case and an optical component including a lens are fixed by laser welding to increase the welding strength and reduce the positional displacement due to environmental changes. In a laser welded portion between a pickup case and an optical component including... Agent: Antonelli, Terry, Stout & Kraus, LLP

20100034071 - Diffraction grating, optical pickup and optical disc device: Undesired disturbance components leak eventually into various detection signals and reproduction signals as stray optical beams reflected from recording layers other than a reproduction layer overlap with signal beams on a light reception surface of an optical detector and interference occurs between them when an optical disc having multi-layered recording... Agent: Antonelli, Terry, Stout & Kraus, LLP

20100034072 - Fresnel member having variable sag for multiple wavelength optical system: A Fresnel member for an optical system is configured to receive at least reflected light having a first wavelength at a first envelope and reflected light having a second wavelength different from the first wavelength at a second envelope. The Fresnel member includes a plurality of ring zone portions having... Agent: Greenblum & Bernstein, P.L.C

20100034073 - Optical head device and recording/reproduction device: An optical head device includes a first light source and a second light source which respectively emits a first light beam and a second light beam, a luminous flux separating section which selectively separates the first and second light beams for which the same optical path is used, to first... Agent: Wenderoth, Lind & Ponack L.L.P.

20100034074 - Information recording medium and master exposing apparatus:

20100034075 - Optical disc with postponed viewing window: An optical storage medium comprising a data layer suitable to be read by means of a radiation beam in an optical scanning apparatus, and access control means for inhibiting reading of at least part of stored information for a predetermined period of time, thereby leading to a postponed viewing window.... Agent: Philips Intellectual Property & Standards

  
02/04/2010 > patent applications in patent subcategories. patent applications/inventions, industry category

20100027384 - Optical head device, optical information recording/reproducing device and error signal generation method: A diffractive optical element generates main and two sub beams from an output light of a light source. An objective lens focuses the main and two sub beams on an optical recording medium. An optical detector receives the main and two sub beams reflected by the optical recording medium. The... Agent: Mr. Jackson Chen

20100027385 - Aberration correcting device, optical head, and optical disc apparatus: An aberration correcting device includes: a first transparent electrode; a second transparent electrode; and a liquid crystal layer disposed between the first transparent electrode and the second transparent electrode, having refractive index varying according to an electric field applied to the liquid crystal layer, wherein the first transparent electrode has... Agent: Knobbe Martens Olson & Bear LLP

20100027386 - Optical pickup apparatus, focal-point adjusting method, and optical disc apparatus: An optical pickup apparatus is provided with an angle adjusting element. The angle adjusting element changes a propagation direction of luminous fluxes of four luminous flux regions set about an optical axis of the laser light, out of laser light reflected by a disc, and mutually disperses the luminous fluxes.... Agent: Ditthavong Mori & Steiner, P.C.

20100027388 - Information reproducing apparatus and method, and computer program: An information reproducing apparatus (1) is provided with: a reading device (10) for reading contents data; an operating device (41) constructed to rotate depending on an operation of a user; a reproducing device (15) for reproducing the contents data, while determining reproduction speed and reproduction direction of the contents data... Agent: Young & Thompson

20100027389 - Buffering control method, and buffering control device: There is provided a method for controlling the buffering of the main data which is reproduced from the optical disc, in which the main data and the sub data are received with taking word clocks which are partitioning timings having plural bits of the main data as a unit as... Agent: Wenderoth, Lind & Ponack L.L.P.

20100027390 - Signal conversion module and optical disc apparatus using the same: The MTD has some problems. Firstly, even if an input bandwidth is widened to obtain a larger SNR gain, an increase in the SNR gain cannot always be obtained due to the clock jitter that increases clock noise. Secondly, noise is sometimes superimposed on the clock supplied to an ADC... Agent: Mattingly & Malur, P.C.

20100027391 - Control apparatus and method for content reproducing: In a content reproducing system (1), which includes: a program judging unit (31) that judges whether or not a BD-J program being executed is a continuing program when an eject operation for a BD is detected during reproduction control in which reproduction of a content is controlled by execution of... Agent: Oliff & Berridge, PLC

20100027387 - Information recording apparatus, medium, and program: An information recording apparatus changes a write strategy to reduce a pulse width of a write pulse to write a minimum mark, and records data based on the changed write strategy.... Agent: Nixon & Vanderhye, PC

20100027392 - Apparatus and method for calibrating optical storage device: An apparatus for calibrating an optical storage device includes a clock generator, a jitter meter, and a calculation unit. The clock generator is utilized for providing a clock signal; the jitter meter is utilized for obtaining a plurality of data-to-data jitter values of a plurality of radio frequency (RF) signals... Agent: North America Intellectual Property Corporation

20100027395 - Optical disk device and optical disk processing system having optical disk device: An optical disk device which quickly detects that a transparent disk is loaded is provided. When an optical disk is loaded, a drive controller of an optical disk device drives a spindle motor and checks existence of an optical disk based on a driving result. In addition, the drive controller... Agent: Christensen, O'connor, Johnson, Kindness, PLLC

20100027396 - Drop-out detecting circuit and optical disc device: An optical disc apparatus according to the present invention includes: an optical head 102 that irradiates a given optical disc 101 with a light beam and generates electrical signals based on light reflected from the optical disc; a dropout detecting section 108 for detecting a dropout that has occurred in... Agent: Mark D. Saralino (pan) Renner, Otto, Boisselle & Sklar, LLP

20100027397 - Tracking by cross correlating central apertures of multiple beams: The present invention provides a method and apparatus for robust tracking at narrow track-pitches on optical discs, enabling higher densities on Blu-ray Discs (5) as well as near-field discs. Increasing radial density results in loss of radial diffraction within the numerical aperture of the lens. Due to this loss in... Agent: Philips Intellectual Property & Standards

20100027393 - Optical recording medium, optical recording apparatus, and system to prepare contents-recorded optical recording medium: An optical recording medium, comprising a dye recording layer, wherein a recording mark portion is formed at the dye recording layer by use of a laser light having a wavelength of 640 nm to 680 nm, and a reflectance after recording with respect to the laser light at the recording... Agent: Cooper & Dunham, LLP

20100027394 - Servo calibration mark detection circuit for hd-dvd or dvd-ram and method thereof: The invention provides a servo calibration mark detection circuit for use in an optical disk drive. In one embodiment, the servo calibration mark detection circuit comprises a summing processor, a slicing level generator, and a comparator. The summing processor sums an intensity of a light beam reflected from both an... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20100027398 - Optical disc device and recording deviation amount transfer method: An optical disc device for measuring a recording deviation amount of data recorded on an optical disc on which physical addresses are previously provided, includes an address detection circuit which detects the physical address and outputs a physical address detection signal, a timer which is operated in synchronization with reproduced... Agent: Wenderoth, Lind & Ponack L.L.P.

20100027399 - Information recording method, information recording medium and information recording apparatus: An information recording medium and information recording method using an optical recording medium in which at least one recording pulse is formed for recording information on the optical recording medium, and the information is recorded to the optical recording medium by irradiating the at least one recording pulse on the... Agent: Antonelli, Terry, Stout & Kraus, LLP

20100027400 - Motion limiting cover for data storage device: Disclosed herein are embodiments of motion limiting cover features that improve coil/VCM coupled resonance. The features are flexible in that their position and configuration can be customized to specifically target a certain type of undesirable motion, such as undesirable twisting (i.e., torsion) and/or bending.... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100027401 - Run length limited encoding of data into a 5x5 matrix for recording into a holographic medium: Holographic recording drives encode data for recording into a holographic medium. The steps comprise run length limited encoding three bytes of data into 5×5 matrix information, the data subject to a 4-byte error correction code; and providing the 5×5 matrix information to a spatial light modulator (SLM), as a portion... Agent: John H. Holcombe IBM Corporation,IPLaw Dept.

20100027402 - Optical head device and optical disc apparatus: An optical head device includes: a diffraction unit including a plurality of diffraction portions each diffracting a incident light in a given direction, the light beam being reflected by an optical disc; and a photodetection unit including a plurality of photodetectors each outputting a signal corresponding to an intensity of... Agent: Knobbe Martens Olson & Bear LLP

20100027403 - Optical disc apparatus and signal generation method: An optical disc apparatus includes a light separator configured to separate a light beam emitted from a light source into a main beam and a sub-beam, an objective lens configured to, when the light beam is condensed and irradiated to an optical disc having a uniform recording layer in which... Agent: Wolf Greenfield & Sacks, P.C.

20100027404 - Optical pickup apparatus and focal-point adjusting method: An optical pickup apparatus includes an astigmatic element, an angle adjusting element for contradicting propagation directions of luminous fluxes within four different luminous flux regions out of a reflected light, a polarization adjusting element. Two of the luminous flux regions are placed in a direction in which aligned are a... Agent: Ditthavong Mori & Steiner, P.C.

20100027405 - Optical pickup apparatus, focal-point adjusting method, and optical disc apparatus: An optical pickup apparatus is provided with an angle adjusting element. The angle adjusting element changes a propagation direction of luminous fluxes of four luminous flux regions set about an optical axis of the laser light, out of laser light reflected by a disc, and mutually disperses the luminous fluxes.... Agent: Ditthavong Mori & Steiner, P.C.

20100027406 - Optical storage medium comprising tracks with different width and respective production method: The optical storage medium comprises a substrate layer and a data layer with a mark/space structure arranged in tracks, wherein a sequence of marks of a first track have a first width, and a sequence of marks of a neighboring track have a second width being different from the first... Agent: Robert D. Shedd, Patent Operations Thomson Licensing LLC

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