|Dynamic information storage or retrieval patents - Monitor Patents|
USPTO Class 369 | Browse by Industry: Previous - Next | All
06/2011 | Recent | 14: Aug | Jul | Jun | May | Apr | Mar | Feb | Jan | 13: Dec | Nov | Oct | Sep | Aug | Jul | Jun | May | Apr | Mar | Feb | Jan | 12: Dec | Nov | Oct | Sep | Aug | July | June | May | April | Mar | Feb | Jan | 11: Dec | Nov | Oct | Sep | Aug | Jul | Jun | May | Apr | Mar | Feb | Jan | 10: Dec | Nov | Oct | Sep | Aug | Jul | Jun | May | Apr | Mar | Feb | Jan | | 09: Dec | Nov | Oct | Sep | Aug | Jl | Jn | May | Apr | Mar | Fb | Jn | | 2008 | 2007 |
Dynamic information storage or retrieval June invention type 06/11Below 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. 06/30/2011 > patent applications in patent subcategories. invention type
20110158059 - Information storage medium, recording method, and recording apparatus: According to one embodiment, an information storage medium in which layer 0 and layer 1 are arranged from a read surface, a system lead-in area, data lead-in area, data area, and middle area are arranged from an inner circumference of the layer 0, and a system lead-out area, data lead-out... Agent:
20110158060 - Information storage medium, recording method, and recording apparatus: According to one embodiment, an information storage medium in which layer 0 and layer 1 are arranged from a read surface, a system lead-in area, data lead-in area, data area, and middle area are arranged from an inner circumference of the layer 0, and a system lead-out area, data lead-out... Agent:
20110158061 - Information storage medium, recording method, and recording apparatus: According to one embodiment, an information storage medium in which layer 0 and layer 1 are arranged from a read surface, a system lead-in area, data lead-in area, data area, and middle area are arranged from an inner circumference of the layer 0, and a system lead-out area, data lead-out... Agent:
20110158062 - Information processing system: In an information storage device in which small compartments each for storing information are arranged three-dimensionally inside a solid body, the solid body having at least one pair of parallel planar portions on its surface is used for a memory medium. The information to be stored is divided into bits... Agent: Hitachi, Ltd.
20110158063 - Optical disc device and data reproduction method for the same: Prevention of deletion of data in an unintended recording layer of an optical disc is ensured even when servo deviation occurs while controlling data reproduction. A light source outputs a light beam with light intensity according to a driving current on which a high frequency signal is superimposed. The light... Agent:
20110158065 - Optical disk drive and method for performing layer jumps: The invention provides a method for performing a layer jump of a disk. First, a tracking error generation method is determined according to a layer type of a target layer when the layer jump is performed. A tracking error signal is then generated according to the tracking error generation method.... Agent: Mediatek Inc.
20110158066 - Backup device and one-key data backup method for the same: A backup device and a one-key data backup method for the same use a backup device having ability to retrieve a memory card and an optical disc. The backup device is connected to an external computer. A backup application is installed having backup conditions configured in the external computer. When... Agent:
20110158067 - Recording/reproducing device and method for controlling same: A recording/reproducing device includes: a data comparing section which compares, at the time of ejection of an optical disc, recorded information recorded on a ROM layer of the optical disc and relevant information (e.g., additional data) which is stored in the recording/reproducing device and which is related to registered information... Agent: Sharp Kabushiki Kaisha
20110158068 - Optical disc device and playing method of optical disc: To determine the optimum amplitude of high frequency signal for the loaded disc with a simple configuration to achieve stable playing performance, there is provided an optical disc device comprising: a light source driven by a drive signal with a high frequency signal superimposed; a detector for detecting return light... Agent:
20110158064 - Optical recording/reproducing device and method of controlling the same: An optical recording/reproducing device which minimizes the number of home-in operations to move a pickup to a predetermined reference position of an inner circumference of a disc, and a method of controlling the same. The optical recording/reproducing device includes a pickup to record or reproduce information on or from a... Agent: Samsung Electronics Co., Ltd.
20110158069 - Recording/reproducing apparatus and recording/reproducing method: An optical disc apparatus capable of deriving optimum laser beam power even when OPC areas overlap with one another and a method for the apparatus. OPC result is recorded to an optical disc and OPC (area-saving OPC) that reduces an area use quantity by using the OPC result is executed... Agent:
20110158070 - Optical disk drive and method for determining type of a blu-ray disk: The invention provides a method for determining the layer type of a blu-ray disk. First, a laser beam is focused on a target layer of the blu-ray disk. Reflection of the laser beam from the target layer is the detected to obtain a reflection signal. The reflection signal is then... Agent: Mediatek Inc.
20110158071 - Write strategy determining method, optical disc recording method, optical disc and optical disc apparatus: An optical disc recording method of suppressing variations in the record quality due to variations in an initial strategy of a write strategy using many parameters corresponding to a next-generation large-capacity optical disc. Modulation conditions for recorded data on the optical disc are determined based on a real measurement thereof;... Agent:
20110158072 - Method of detecting approximate touch-down, method of adjusting head flying height using the detected approximate touch-down, and disk drive: A method and apparatus to control a flying height of a head in a disk drive by detecting a flying state of the head just before it touches down to a disk. The method includes detecting approximate touch-down based on detecting a motion change of a head in a disk... Agent: Samsung Electronics Co., Ltd.
20110158073 - Optical checking method and apparatus for defects in magnetic disks: An apparatus for optically checking magnetic disk defects that makes possible more accurate determination of positions of minute defects by illuminating an area greater than a checkup area with an illuminating beam having a Gaussian distribution is to be provided. The apparatus is configured of a specular reflection detecting device... Agent:
20110158074 - Optical disc device and disc identification method: To identify the type of a loaded disc, there is provided an optical disc device, comprising: a light source driven by a drive signal with a high frequency signal superimposed; a detector for detecting return light emitted from the light source; and a controller for controlling the amplitude of the... Agent:
20110158075 - Enhanced linearity dvd writing current circuit: A writing current circuit (42) supplies a controlled electrical current to a laser diode (34) for recording data swiftly onto a DVD (16). A plurality of current sources (62) in the writing current circuit (42) supply electrical current directly to the laser diode (34). Each current source (62) respectively receives... Agent:
20110158076 - Digital information media having adhesion promotion layer on a substrate: Disclosed is a digital information media having an adhesion promotion layer supported on a dummy (L1) substrate that enables secure bonding of the L1 layer, directly or indirectly, to the rest of the stack of layers in the digital information media. Certain materials including metals, metal alloys, or metalloids enhance... Agent: Brigham Young University
20110158077 - Connection structure of flexible printed circuits and optical pickup device: In connecting flexible printed circuits, a structure with improved connection strength of the connection portion is provided. In this structure in which a first flexible printed circuit and a second flexible printed circuit are connected to each other, a through-hole is provided on the second flexible printed circuit, and a... Agent: Hitachi Media Electronics Co., Ltd.
20110158078 - Optical pickup device and focus jump method: In an optical pickup device and a method of a focus jump, in order to make optimum correction of spherical aberration responsive to the position of a recording layer at one end nearer a target recording layer than a current in-focus recording layer, the recording layer at the one end... Agent: Pioneer Corporation
20110158079 - Optical pickup lens: An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens. The optical pickup lens has two surfaces, and a surface R2 opposite to a surface R1 closer to the laser light source has a continuous shape.... Agent: Hitachi Maxell, Ltd.
20110158080 - Disc clamp and spindle motor having the same: Disclosed is a disc clamp including a disc clamp body having a rotational axis hollow engaged with a rotational axis; a first disc balancer that is projected from the disc clamp body in the horizontal direction and formed in a first thickness A; and a second disc balancer that is... Agent: Lg Innotek Co., Ltd.06/23/2011 > patent applications in patent subcategories. invention type
20110149698 - Thermally assisted magnetic recording head and head assembly: In a thermally assisted magnetic recording head (10A), a sub-mount (8A) on which a laser diode is mounted is arranged between an HGA (41) and a magnetic head slider (9). The sub-mount has a wiring line (81) which electrically connects a terminal (91) arranged on the magnetic head slider (9)... Agent: Hitachi, Ltd.
20110149699 - Information recording medium, and recording method and reproducing method thereof: An information recording medium in which bottoms of a guide groove and a pit array formed on a disc substrate are allocated on a same flat plane and shaped in flat. Further, in a transition area from a pit array to a guide groove or from a guide groove to... Agent: Victor Company Of Japan, Limited
20110149700 - Method of and apparatus for recording data on write-once disc, method of and apparatus for reproducing data from write-once disc, and write-once disc therefor: A method and apparatus recording and/or reproducing data on/from a write-once disc, and a write-once disc therefor, the write-once disc having at least one recording layer including: a plurality of update areas in which predetermined updated information is recorded; and at least one access information area in which access information... Agent: Samsung Electronics Co., Ltd.
20110149701 - Optical recording medium, recording/reproducing apparatus and method, initialization method, and reinitialization method: A recording/reproducing apparatus includes a writing/reading unit writing data to or reading data from an information recording medium having an access control area in which access control data is recorded, the access control data having common information set to allow the recording/reproducing apparatus that cannot recognize a predetermined function adapted... Agent: Samsung Electronics Co., Ltd.
20110149702 - Optical disc drive apparatus, optical pickup control method and program: An optical disc drive apparatus includes: a first optical pickup and a second optical pickup which record data on an optical disc and reproduce data recorded on the optical disc; a slide mechanism which has the first and second optical pickups mounted thereon to slide the first and second optical... Agent:
20110149703 - Optical disc apparatus and data writing method: The present invention provides an optical disc apparatus that changes the number of revolutions of an optical disc on sensing resonance. The optical disc apparatus of the present invention performs both the operation of writing data on the optical disc 10 and the operation of reading data that is stored... Agent:
20110149704 - Signal evaluation method and signal evaluation apparatus: A signal evaluation method according to the present invention is a method for evaluating a read signal, retrieved from an information recording medium, based on a binarized signal generated from the read signal by a PRML method. The method includes the steps of: detecting the patterns of multiple paths associated... Agent: Panasonic Corporation
20110149705 - Data storage in optical discs: A device for preventing and controlling copying of data from an optical storage disc utilizing physical modifications in or on a storage capable optical disc. Also described is, a method for authenticating and controlling reading or copying of information or data in or on optical discs as, for example, wherein... Agent: Verification Technologies, Inc.
20110149706 - High sensitivity glide sensor using frictional heating: A tool for testing a magnetic disk for use in a magnetic disk drive. The tool detects surface defects or asperities by detecting a change in electrical resistance corresponding to a temperature change in a thermally sensitive layer. The apparatus includes a slider body having a thermally insulating layer formed... Agent:
20110149707 - Device, method, and computer program product for data migration: A device, method, and computer program product are provided for migrating pieces of data from a first recording location to a second recording location based on access frequency. The device comprises an obtaining unit for obtaining, for each of the pieces of data, first information indicating the number of times... Agent: International Business Machines Corporation
20110149708 - Information processing apparatus, information recording medium, information processing method, and computer program: An information processing apparatus includes: a data processing unit that generates data for copy of data recorded on an information recording medium, wherein the information recording medium has a configuration in which data encrypted by applying an individual unit key in unit of a unit, which is segment data corresponding... Agent:
20110149709 - Optical pickup apparatus: An optical-pickup apparatus includes: a three-wavelength-laser diode including first-, second-, and third-laser elements to emit first-, second-, and third laser beams having first, second, and third wavelengths, respectively, the three laser elements housed in the same case; an objective lens to focus the three laser beams onto first- to third-optical-disc-signal-recording... Agent: Sanyo Optec Design Co., Ltd.
20110149710 - Compatible optical recording medium: A format of a recordable optical recording medium is described. The recordable optical recording medium is designed in such a way that it has the appearance of a read-only optical recording medium for most players and recorders. Also described are a method for manufacturing the recordable optical recording medium and... Agent:
20110149711 - Coma aberration compensating device, coma aberration compensating method, and optical disc: A method for compensating the coma aberration in a pickup of a recording and reproducing device that records or reproduces data on or from an optical disc using the pickup is provided. The method includes a first coma aberration compensating step to compensate coma aberration in a body of an... Agent: Pioneer Corporation
20110149713 - Objective lens drive device and optical pickup: In an optical pickup equipped with a semiconductor laser, electro-optical components such as a lens, and an objective lens drive device, the objective lens drive device includes objective lenses, a holder holding the objective lenses, a focusing coil, and tracking coils. The focusing coil is wound in parallel to the... Agent: Hitachi Media Electronics Co., Ltd.06/16/2011 > patent applications in patent subcategories. invention type
20110141861 - Near-field light head and information recording/reproducing device: A near-field light head of the present invention includes: a slider disposed opposite to a surface of the magnetic recording medium; a recording element that includes a main magnetic pole generating the recording magnetic field and a subsidiary magnetic pole, the recording element being fixed to an apical surface of... Agent: Seiko Instruments Inc.
20110141862 - Thermally-assisted magnetic recording head: In a thermally assisted magnetic recording head having a light source and a waveguide to lead a laser beam radiated from the light source to a front end of the magnetic head, while blocking an adverse effect of heat generated in the light source and securing a good floating characteristic,... Agent: Hitachi, Ltd.
20110141863 - Data storage system and method for calibrating same: Disclosed herein are aspects of optical tape technology, tape manufacturing, and tape usage. Methods and systems of tape technology disclose optical tape media including: configurations, formulations, markings, and structure; optical tape manufacturing methods, systems, and apparatus methods and systems including: curing processes, coating methods, embossing, drums, testing, tracking alignment stamper... Agent: Sun Microsystems Inc.
20110141864 - Tilt control method of near-field optical system: A tilt control method for a near-field optical disc drive is provided. A gap between a lens and a disc is estimated. A tilt compensation for the lens is estimated according to a tilt signal when the lens is within a far-field region. A coarse tilt control is performed on... Agent: Lite-on It Corporation
20110141865 - Metrology for extreme ultraviolet light source: An extreme ultraviolet light system includes a drive laser system that produces an amplified light beam; a target material delivery system configured to produce a target material at a target location; a beam delivery system configured to receive the amplified light beam emitted from the drive laser system and to... Agent: Cymer Inc.
20110141866 - Tracking signal generation device and method, reproduction device and method, and computer program: A tracking signal generating apparatus is provided with: a reading device for reading reflected light of a laser beam applied onto a recording medium, thereby obtaining a resulting read signal; an amplitude-limiting device for limiting an amplitude level of the read signal by a predetermined amplitude value, thereby obtaining an... Agent: Pioneer Corporation
20110141867 - Optical information recording/reproducing apparatus and optical information reproducing apparatus: In a system of detecting an interference light with a light not irradiated onto an optical disc to increase the S/N ratio, it is difficult to stably acquire a reproduced signal with a simple configuration. Since the recording density is not improved, an improvement in transfer rate is difficult. In... Agent: Hitachi Consumer Electronics Co., Ltd.
20110141868 - Data storage system and method for calibrating same: Disclosed herein are aspects of optical tape technology, tape manufacturing, and tape usage. Methods and systems of tape technology disclose optical tape media including: configurations, formulations, markings, and structure; optical tape manufacturing methods, systems, and apparatus methods and systems including: curing processes, coating methods, embossing, drums, testing, tracking alignment stamper... Agent: Sun Microsystems Inc.
20110141870 - Optical disc drive: An optical disk drive (ODD) is provided. The ODD includes an optical pickup unit; and at least one pickup guide for contacting with at least one guide that guides a motion of the pickup unit, wherein the pickup guide includes at least one oil housing unit for housing oil applied... Agent:
20110141869 - Optical pickup, photodetector, and drive adopting the optical pickup: An optical pickup, photodetector, and optical drive adopting the optical pickup are provided. The optical pickup may include a light emitting system having a plurality of light sources corresponding to a plurality of mediums a light receiving system including a photodetector for converting light reflected from a medium into an... Agent: Toshiba Samsung Storage Technology Korea Corporation
20110141872 - Storage medium, reproducing method, and recording method: According to one embodiment, a write-once type information storage medium comprises a recording layer which is formed by mixing a plurality of organic dye based recording materials whose molecular weights are different from each other, and wherein a mixture ratio of organic dye based recording materials whose molecular weight is... Agent:
20110141871 - Storing data on fiber data storage media: A method and apparatus for storing data is provided. One implementation involves providing a fiber medium for storing data, wherein the fiber medium has a characteristic configured to irreversibly change when exposed to write irradiation. The fiber medium is logically partitioned into cells along the length of the fiber medium.... Agent: International Business Machines Corporation
20110141873 - Diffraction grating, aberration correction element and optical head device: There is provided a diffraction grating including a convex portion and a concave portion which are used for lights having different wavelengths λ1, λ2 and λ3 and are alternately disposed on at least one surface of a substrate with a predetermined pitch. An average refractive index of the convex portion... Agent: Asahi Glass Company Limited
20110141874 - High density array system with active movable media drawers: A storage system is provided having at least one storage unit, the storage unit including an electrical power source, a communication source and a cover that defines, at least in part an interior space. The storage system operates with a media blade that comprises a plurality of data storage elements,... Agent: Spectra Logic Corporation06/09/2011 > patent applications in patent subcategories. invention type
20110134727 - Electronic device: An electronic device that can reduce a noise caused by a signal or data being always output. A vehicle-mounted device includes: a player that reads out and outputs data recorded in a CD or a DVD (i.e., a TBCK signal, a TSD0 signal, and a TWS signal); a controller that... Agent: Fujitsu Ten Limited
20110134728 - Disc-shaped recording medium, cutting apparatus for same, and disc drive: There is provided an optical disc having preformed thereon a spiral wobbled track as a grove and/or land along with data is to be recorded. The track is wobbled for a series of predetermined signal units each composed of an FSK information bit part based on a waveform resulted from... Agent: Sony Corporation
20110134729 - Recording apparatus and control method: A recording apparatus for performing information recording using formation of marks by focusing a first light with an objective lens at a given position in a recording layer included in an optical disc recording medium, includes: a rotation driving unit; a focus servo control unit for condensing a second light... Agent: Sony Corporation
20110134730 - Recording apparatus and control method: A recording apparatus for performing information recording using formation of marks by focusing a first light with an objective lens at a given position in a recording layer included in an optical disc recording medium, includes: a rotation driving unit for rotating the optical disc recording medium; a focus servo... Agent: Sony Corporation
20110134731 - Optical disc apparatus and defocus correcting method: An optical disc apparatus in which a bias of a focusing error signal is changed to a value according to a recording power at timing corresponding to a predetermined address position before starting the recording and a defocus of an opposite polarity is preliminarily caused so as to set off... Agent:
20110134732 - Optical recording medium, optical recording medium driving apparatus, and optical recording medium driving method: An optical recording medium driving apparatus includes an optical pickup which irradiates first and second laser lights from one object lens with respect to an optical recording medium having a bulk layer and a tilt detection surface; a focus control portion that performs the focus control relative to each predetermined... Agent: Sony Corporation
20110134733 - Tilt adjustment control method of near-field optical system: A tilt adjustment control method for a near-field optical system is provided. The method includes the following steps. A gap between a lens and a disc is detected. A gain corresponding to the gap is provided. A tilt signal is detected. A tilt compensation value according to the tilt signal... Agent: Lite-on It Corporation
20110134734 - Deterring theft of optical media: An optical media disk is treated with a light-sensitive material that impedes the ability of an optical media player from reading data stored on the disk. This light-sensitive material is a material that changes phase upon exposure to one or more wavelengths of light. During the initial phase, the light-sensitive... Agent: Sony Pictures Entertainment Inc.
20110134735 - Recording device and recording method for optical recording medium: It is desired that the overshooting and undershooting of optical pulse waveforms of optical pickups included in optical disk devices be reduced to improve the quality of recording. Among pulses to be recorded, the trailing edge of each last pulse and the leading edge of the subsequent erase top pulse... Agent:
20110134736 - Recording medium, read/write method thereof and read/write apparatus thereof: A recording medium read/write method and apparatus are disclosed. The present invention records version information of a corresponding recording medium as read/write control information within the recording medium. The version information includes write compatibility version information and read compatibility version information. The read/write apparatus efficiently performs the read/write of the... Agent:
20110134737 - Complex objective lens, optical head, optical information apparatus, computer, optical disk player, car navigation system, optical disk recorder, and optical disk server: A complex objective lens composed of a hologram and an objective lens, capable of realizing stable and high-precision compatible reproducing/recording of a BD with a base thickness of about 0.1 mm for a blue light beam (wavelength λ1) and a DVD with a base thickness of about 0.6 mm for... Agent: Panasonic Corporation
20110134738 - Method and apparatus for suggesting data for deletion: An approach is provided for suggesting data for deletion from an electronic data storage medium. An external device detects initiation of transfer of data from first storage medium to second storage medium. Next, the external device determines an available storage in the second storage medium for the data. Then, the... Agent: Nokia Corporation
20110134740 - Optical device, optical recording head and optical recording device: Provided is an optical device configured to makes it possible to enhance use efficiency of light. An optical device is provided with an optical element to deflect incident light and a fixation member on which the optical element is fixed. The optical element includes a reflective surface and a diffraction... Agent:
20110134739 - Optical information recording medium, and substrate and manufacturing method for the optical information recording medium: In an optical disk including at least a rewritable phase change material and comprising a recording layer having a reflectivity of more than 15%, an address output value as an address pit signal component occupying in a reproduced signal in a non recording state is prescribed to be 0.18 though... Agent: Victor Company Of Japan, Limited
20110134741 - Recording/reproducing method in read-only holographic recording medium, and read-only holographic recording medium: A recording signal beam and a recording reference beam are irradiated onto a first surface of a holographic recording medium to write an information as an interference pattern therein. Next, a reflective layer is provided on a second surface opposite to the first surface of the holographic recording medium such... Agent:
20110134742 - Pickup apparatus, optical recording and reproduction apparatus, and recording and reproduction method: A pickup apparatus includes a light source; a light separator; an object lens that concentrates the light which penetrated the light separator on the optical recording medium; a movable lens; and a light sensing element that receives the reflected light from the optical recording medium separated by the light separator,... Agent: Sony Corporation
20110134743 - Optical information recording medium, and substrate and manufacturing method for the optical information recording medium: In an optical disk including at least a rewritable phase change material and comprising a recording layer having a reflectivity of more than 15%, an address output value as an address pit signal component occupying in a reproduced signal in a non recording state is prescribed to be 0.18 though... Agent: Victor Company Of Japan, Limited
20110134744 - Library apparatus and method for moving shelf of library apparatus: A library apparatus includes a storage shelf including a first movable shelf and a second movable shelf each having a plurality of rows and columns of cells in which storage mediums are to be stored, a drive unit being disposed such that a direction of access to the drive unit... Agent: Fujitsu Limited
20110134745 - Optical information recording medium: Disclosed is an optical information recording medium that can solve a problem that a BCA mark becomes unrecognizable in an optical recording medium including a recording layer using an organic coloring matter. A playback signal in a burst cut area comprises a bright-area amplitude level formed upon the playback of... Agent: Taiyo Yuden Co., Ltd.06/02/2011 > patent applications in patent subcategories. invention type
20110128827 - Light source unit for thermally-assisted magnetic recording: Provided is a light source unit the weight of which can be reduced while ensuring power supply to the light source. The light source is configured to form a thermally-assisted magnetic recording head by being joined with a slider including an optical system that propagates light for thermal assist. The... Agent: Tdk Corporation
20110128828 - Thermally assisted magnetic recording head: A thermally assisted magnetic recording head is formed of a slider and a magnetic head. The magnetic head includes a main pole, a reader, a coil, a near-field transducer, and a waveguide. A metal film with high thermal conductivity is formed at both sides of the near-field transducer in a... Agent: Hitachi, Ltd.
20110128829 - Optical recording head and optical recording apparatus: An optical recording head to record information onto a recording medium utilizing light including; a slider provided to move relatively to the recording medium; a light propagation element provided on a side surface of the slider substantially vertical against a recording surface of the recording medium so as to cause... Agent:
20110128830 - Recording device and method, and computer program: A recording apparatus includes: a recording device for recording content data onto a recordable recording medium with a first recording layer including a first data area and a second recording layer including a second data area; a first reading device reading the address of the position corresponding to the maximum... Agent: Pioneer Corporation
20110128831 - Method of using backup image of optical disc: This document relates to a method of using a backup image of an optical disc. In an embodiment of this document, data of an optical disc inserted into an Optical Disc Drive (ODD), included in a disc drive integrated with a Solid State Drive (SSD), may be backed up in... Agent:
20110128832 - Optical head device and optical disc apparatus: An optical head device and an optical disc apparatus of a simple structure capable of canceling an offset in a tracking error signal caused when an objective lens shifts; in the optical head device, a polarizing hologram 104 has first diffraction areas 112 and 113 including a whole of an... Agent:
20110128833 - Optical drive device: An optical drive apparatus that reproduces an optical disk having a land and a groove, the optical drive apparatus including a first tracking-error-signal generating unit that generates a first tracking error signal by using a DPD method, a second tracking-error-signal generating unit that generates a second tracking error signal by... Agent:
20110128834 - Filter and filtering method thereof: A filter, including a direct-current (DC) tracking unit, a subtracter and a control unit, is provided. The DC tracking unit extracts a DC component of a radio-frequency (RF) signal and accordingly generates a level signal. The subtracter subtracts the level signal from the RF signal to generate a RF coupling... Agent: Sunplus Technology Co., Ltd.
20110128835 - Driving device and method, program, and recording medium: A driving device includes: n pickups; n first control means for respectively controlling the pickups; and a second control means for controlling the n first control means so as to divide data into n pieces of data and to write divided data on a predetermined disc through the n pickups,... Agent: Sony Corporation
20110128837 - Methods and devices for recording marks in an information layer of an optical record carrier, and record carriers for use therein: Methods and devices or writing an optical record carrier, in which a mark representing recorded data is written in a phase-change layer of a record carrier by a sequence of radiation pulses. A rear heating pulse is introduced after a last write pulse and a front heating pulse is introduced... Agent: Koninklijke Philips Electronics N.v.
20110128836 - Optical recording method and optical recording device: In a dye-type optical recording medium, a write strategy for use in recording is determined based on recommended write strategy parameters recorded on an optical disk (160) and the characteristics of the optical recording device, and recording is carried out on the optical disk (160) according to the determined write... Agent:
20110128839 - Optical disk device: Proposed is an optical disk device capable of appropriately performing focus control. In an optical disk device, an objective lens is moved in the thickness direction of an optical disk by controlling an actuator and a time interval in which each of the recording layers was detected is measured while... Agent: Hitachi - Lg Data Storage, Inc.
20110128838 - Optical pickup device: An optical pickup device capable of eliminating interlayer crosstalk which is responsible for fluctuation in control signals and error rate in data signals, thereby ensuring stable action for a multilayered recording disc with a narrow interlayer spacing. The reflected beam coming from the multilayered disc is divided along the central... Agent: Hitachi Media Electronics Co., Ltd.
20110128840 - High density data storage medium, method and device: A composition of matter for the recording medium of nanometer scale thermo-mechanical information storage devices and a nanometer scale thermo-mechanical information storage device. The composition includes: one or more polyaryletherketone polymers, each of the one or more polyaryletherketone polymers having two terminal ends, each terminal end having two or more... Agent: International Business Machines Corporation
20110128841 - Multi-speed recording for multi-layer disc: The present invention relates to a recording apparatus, record carrier and method of recording data on at least two layers of a recording medium by using a radiation power, wherein individual recording speeds are determined for respective ones of the at least two layers at different values of the radiation... Agent: Koninklijke Philips Electronics N.v.Previous industry: Horology: time measuring systems or devices
Next industry: Multiplex communications
RSS FEED for 20140807:
Integrate FreshPatents.com into your RSS reader/aggregator or website to track weekly updates.
For more info, read this article.
Thank you for viewing Dynamic information storage or retrieval patents on the FreshPatents.com website. These are patent applications which have been filed in the United States. There are a variety ways to browse Dynamic information storage or retrieval patent applications on our website including browsing by date, agent, inventor, and industry. If you are interested in receiving occasional emails regarding Dynamic information storage or retrieval patents we recommend signing up for free keyword monitoring by email.
Results in 0.45993 seconds