Patents
Patents for G11B 7 - Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor (102,715)
04/1998
04/21/1998US5742577 Prism has a plurality of reflective regions each with a predetermined phase difference
04/21/1998US5742576 Digital signal reproducing apparatus
04/21/1998US5742575 For irradiating a light onto a disc
04/21/1998US5742574 Magneto-optic disk drive controlling apparatus
04/21/1998US5742573 Compensation apparatus for radial and vertical runout of an optical disc
04/21/1998US5742572 Optical information recording/reproducing apparatus which detects focal error
04/21/1998US5742569 Information record medium, apparatus for recording the same and apparatus for reproducing the same
04/21/1998US5742568 Tracking controller and seek controller for optical recording device
04/21/1998US5742567 Master optical disk recording apparatus
04/21/1998US5742566 Optical recording methods and apparatus using light modulation technique based on detecting temperature of the medium
04/21/1998US5742441 Method and apparatus for aligning an objective lens
04/21/1998US5742440 Actuator with reduced lens tilt error
04/21/1998US5742437 Optical pickup device
04/21/1998US5742383 Apparatus for measuring degree of inclination of objective lens for optical pickup
04/21/1998US5742046 Amplifier circuit for providing outputs as a function of sensed light
04/21/1998US5741836 Blend of hydrophilic polymer and thickener
04/21/1998US5741627 Optical recording medium and method for eliminating berm buildup
04/21/1998US5741623 Optical recording medium
04/21/1998US5741603 Recording information at high density
04/16/1998WO1998015952A1 Optical apparatus
04/16/1998WO1998015951A1 Optical disc, optical disc device, and method for recording an optical disc
04/16/1998WO1998015950A2 Arrangement and method for recording optical data with amplitude and time modulation
04/16/1998WO1998015949A1 Recording medium and information recorder/reproducer
04/16/1998DE19730862A1 Magneto=optical storage arrangement with removable carrier
04/16/1998DE19642343A1 Verfahren zum Regeln der Fokussierung und der Führung eines Lichtstrahls A method of controlling the focussing of a light beam and the guide
04/16/1998DE19641294A1 Analogue stage for CD player device
04/15/1998EP0836192A1 Multi-scene recording medium and method and apparatus for reproducing data therefrom
04/15/1998EP0836191A1 Method and apparatus for reproducing data from a recording medium
04/15/1998EP0836185A2 Self-compensating dynamic balancer apparatus for a disk player
04/15/1998EP0836183A2 Recording and reproducing apparatus and recording and reproducing method
04/15/1998EP0836182A2 Methods for bonding structurally dissimilar optical discs
04/15/1998EP0836181A2 Methods for bonding double-sided discs
04/15/1998EP0836180A2 An optical recording medium with a metallic recording layer
04/15/1998EP0836179A1 An optical recording medium
04/15/1998EP0836178A1 Optical disk
04/15/1998EP0836177A1 Optical apparatus
04/15/1998EP0836105A1 An optical transmission/reception module
04/15/1998EP0835917A1 Ultraviolet-curing adhesive composition and article
04/15/1998EP0835508A1 Optical data storage system with multiple write-once phase-change recording layers
04/15/1998EP0835478A1 Solid state sound lamp
04/15/1998CN1179228A Optical apparatus for scanning a tope-shaped record carrier
04/15/1998CN1178981A Optic information recording disc
04/15/1998CN1178980A Tester for recording medium characteristics of compact disc
04/15/1998CN1178979A Optic pickup device and optic disc player
04/15/1998CN1178978A Optical wave pickup and its producing method
04/15/1998CN1178977A Optic pick up
04/15/1998CN1178976A Disc player mounted with self-compensating dynamic balance device
04/15/1998CN1178975A Servo signal processor and optical disc device
04/15/1998CN1178974A Method and apparatus for processing photoelectric scanner output signal in replaying or recording device
04/15/1998CN1178973A Optical information carrier recording or replaying device with servo control circuit and its method
04/15/1998CN1178972A Optical disc reproducing device capable of correcting balancer characteristic
04/15/1998CN1178971A Disc detector and method
04/15/1998CN1178794A Optical information storing material for blue light DVD-R
04/15/1998CN1038073C Method for shortening access time
04/15/1998CN1038072C Disc-shaped recording medium
04/14/1998US5740460 Arrangement for processing packetized data
04/14/1998US5740310 Method of maintaining display continuity from a CD with slow-motion or freeze capability
04/14/1998US5740294 Optical sound head combined with a sound film projector
04/14/1998US5740184 Decision feedback viterbi detector for page-access optical memories
04/14/1998US5740154 Magnetooptical record medium having adjacent header signals
04/14/1998US5740152 For controlling rotational speed of an optical disk
04/14/1998US5740151 Optical test disk having a plurality of different formats
04/14/1998US5740150 Galvanomirror and optical disk drive using the same
04/14/1998US5740149 Phase-change type optical recording and reproducing method
04/14/1998US5740148 Stationary optical data storage system using holographic or acousto-optical deflection
04/14/1998US5740147 Phase compensation of optical elements by tilting a half wave plate in a magneto-optic disk head
04/14/1998US5740145 Active focus alignment system for multilayer optical disk storage based on dither frequency doubling
04/14/1998US5740144 Disk reproducing apparatus
04/14/1998US5740143 Disc reproducing apparatus
04/14/1998US5740141 Signal processing device for an optical information reproducing apparatus
04/14/1998US5740139 Magnetically suspended optical recording actuator
04/14/1998US5740138 Apparatus for recording information on a primary optical disk to manufacture optical disks
04/14/1998US5740137 Servo control method for an opto-magnetic disc
04/14/1998US5740136 Disk driving device and method for optical recording and reproducion with acceleration/deceleration of focusing means being based on a focus error signal level
04/14/1998US5740134 For creating a customized digital audio product
04/14/1998US5739975 Memory storage module for staring and accessing magnetically encoded data on linear tracks
04/14/1998US5739952 Optically isotropic substrate, layer of birefringent material, periodic pattern of ridges and grooves to form grating, grooves filled with optically isotropic material
04/14/1998US5739929 Method and device for holographic storage
04/14/1998US5739717 Semiconductor light emitting element driving circuit
04/14/1998US5739608 Actuator for optical pickup
04/14/1998US5739521 Laser diode controlling method and apparatus for compact disk drive
04/14/1998US5739519 Information recording method
04/14/1998US5739319 Phthalocyanine or naphthalocyanine derivative
04/14/1998US5739214 Radiation-curable coating of unsaturated prepolymer, epoxy and ketone resin
04/14/1998US5738973 Optical information recording medium
04/14/1998US5738960 Optical information reproducing method
04/14/1998US5738950 Amorphous magnetic alloy film of cobalt, gadolinium, terbium and iron; heat resistance
04/14/1998US5738947 Silver-magnesium alloy and magnesium oxide film
04/14/1998US5738886 Mold for disk substrate
04/14/1998US5738765 Magneto-optic memory device
04/14/1998US5738008 Clamping apparatus for disk-shaped information medium
04/09/1998WO1998014938A1 Recording/reproducing method suitable for recording/reproducing av data on/from disc, recorder and reproducer for the method, information recording disc and information processing system
04/09/1998WO1998014632A1 Conveyor and delivery device
04/09/1998WO1998014520A1 Substituted phthalocyanines and their use
04/09/1998DE3790965C2 Improved optical recording material
04/09/1998DE19743516A1 Optical recording arrangement for information with different densities
04/09/1998DE19741784A1 Optical scanner useful for digital video disk player
04/09/1998CA2262976A1 Substituted phthalocyanines and their use
04/08/1998EP0834876A2 Disk format detecting device and method
04/08/1998EP0834874A2 Optical information recording medium and optical recording method