Patents
Sitemap › G11 - Information storage › G11B - Information storage based on relative movement between record carrier and transducer › 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
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)
11/1993
11/09/1993US5260956 Laser drive circuit
11/09/1993US5260930 Optical information recording medium and reproducing apparatus for reproducing information from the medium
11/09/1993US5260929 Optical disk drive including dust-proofing annular projections
11/09/1993US5260928 Apparatus and method for fabricating a lens/mirror tower
11/09/1993US5260927 Optical pickup device for recordable disc and dichroic mirror
11/09/1993US5260924 Cleaning cartridge for optical disk drive apparatus
11/09/1993US5260923 Optical information processing apparatus in which an optical head is moved in accordance with a lens positional signal eliminating an eccentric component therefrom
11/09/1993US5260800 Apparatus and method for high-speed video tape duplication from master disk
11/09/1993US5260439 With acrylic ester
11/09/1993US5260435 Derivative of naphthalocyanine containing perfluoroalkyl group, process for preparing the same and optical recording medium
11/09/1993US5260165 Optical information recording medium
11/09/1993US5260150 Photo-mask with light shielding film buried in substrate
11/04/1993DE4314333A1 High-resoln. image data recorder with optional memory access - stores data in units of image planes on basis of recording control signal time-coded at input data clock rate
11/03/1993EP0568111A2 Height adjusting device for the pickup of an optical disc player
11/03/1993EP0568010A1 Method and apparatus for reading optical data
11/03/1993EP0568009A2 Recording starting method for magneto-optical disk recording apparatus
11/03/1993EP0567885A1 Diamond-like carbon write-read optical storage memory
11/03/1993CN1078059A Disc repruducing apparatus
11/03/1993CN1022650C Recording device for recording optically detectable information pattern on record carrier
11/02/1993US5258975 Aluminum and lanthanie alloy, read and erase
11/02/1993US5258972 Magnetic damping disc for improved CD player performance
11/02/1993US5258971 Optical disc drive with interconnecting hoods
11/02/1993US5258970 Optical disc and optical disc reproducing apparatus
11/02/1993US5258969 Signal to noise ratio of a multiple layer optical disk with modulated beam
11/02/1993US5258968 Tracking error signal generating device for preventing offset of the generated tracking error signal
11/02/1993US5258967 Method and apparatus for separating a first optical control radiation from a second optical control radiation in a read/write head for use in an optical storage and retrieval system
11/02/1993US5258966 Positioner seek control system of a disk apparatus and method for scanning a beam across a medium
11/02/1993US5258871 Dual diffraction grating beam splitter
11/02/1993US5258852 Recording medium and video signal recording/reproducing method using a predetermined area of a recording medium to record information intended to be recorded in a defective portion of the medium
11/02/1993CA1323786C Tilt adjustment mechanism for object lens driving device
10/1993
10/28/1993WO1993021638A1 Improved surface-enhanced raman optical data storage system
10/28/1993WO1993021628A1 Improved optical disk structures for electron trapping optical memory media
10/28/1993DE4308680A1 Preventing unauthorised use of optical disc e.g. CD-ROM - comparing first information read out from area of disc inaccessible to user with second information concerning authentic disk
10/28/1993DE4213556A1 Einrichtung zur optischen Abtastung eines Aufzeichnungsträgers, insbesondere einer Phosphorspeicherplatte Means for optically scanning a record carrier, in particular a phosphor storage disc
10/27/1993EP0567318A2 Optical disc reproducing apparatus
10/27/1993EP0567315A1 Method and apparatus for the reproduction of a partially recorded optical disk
10/27/1993EP0567170A1 Optical disk with rewritable and write-once areas
10/27/1993EP0567086A1 Double-sided optical information carrier medium and method of making same
10/27/1993EP0567080A1 Optical information storage disk for use with electronic article surveillance systems
10/27/1993EP0566778A2 Optical disk player with digital servo-control circuit
10/27/1993EP0301108B1 Data recording/reproducing apparatus for optical card
10/26/1993US5257256 Recording waveform for mark-length modulation optical recording
10/26/1993US5257252 Adaptive control system for a disk drive actuator
10/26/1993US5257251 Single loop servo-positioning systems having means for changing the dynamic range of a position-error signal with speed of the relatively movable members
10/26/1993US5257250 Tracking-control target-position adjustment method
10/26/1993US5257249 Optical information recording reproducing apparatus for recording and reproducing information on a record medium and for generating track error signals
10/26/1993US5257248 Information recording apparatus capable of efficiently verifying recording information
10/26/1993US5257145 Optical data recording and reproducing apparatus
10/26/1993US5257131 Polarization diffraction element and polarization detector employing the same
10/26/1993US5257111 Continuous both-side playback type video disc apparatus
10/26/1993US5256518 Information storage disk employing a reflective layer having good malleability
10/26/1993CA1323724C Liquid crystalline polyesters
10/26/1993CA1323697C Optical recording medium
10/26/1993CA1323696C Object lens driving device
10/21/1993DE4312922A1 Mini-disc recorder-player with high speed copying - provides magneto=optic recording with error correction and copy protection
10/20/1993EP0566233A1 Optical memory medium and a method of recording information on the same
10/20/1993EP0566147A1 Automatic gain control circuit of an optical disk drive
10/20/1993EP0566146A2 Optical disk apparatus
10/20/1993EP0566107A1 Optical information recording medium and method of designing its structure
10/20/1993EP0566032A2 Hub type optical disk and injection molding die for molding its disk substrate
10/20/1993EP0565848A1 Optical information recording medium and a reproducing apparatus for the recording medium
10/20/1993EP0565751A1 Optical recording method and apparatus therefor
10/20/1993EP0565731A1 Method for measuring quantity of displacement
10/20/1993EP0322462B1 Objective lens driving device
10/20/1993CN1022518C Focus control circuit
10/19/1993US5255263 Information reading system and record carrier and reading device for use in such a system
10/19/1993US5255262 Multiple data surface optical data storage system with transmissive data surfaces
10/19/1993US5255261 Information recording disk
10/19/1993US5255260 Optical recording apparatus employing stacked recording media with spiral grooves and floating optical heads
10/19/1993US5255257 Frequency, phase and amplitude control apparatus and method for acousto-optic deflector optimization
10/19/1993US5255256 Optical data storage system with reduced particle contamination
10/19/1993US5255253 Apparatus and method for controlling the velocity of a disk storage head
10/19/1993US5255252 Light spot position detector and optical head
10/19/1993US5255249 Seek control apparatus
10/19/1993US5255218 Optical frequency multiple signal processing method
10/19/1993US5255103 Optical disk apparatus for selectively recording and reproducing signals having different bit rates
10/19/1993US5255102 Optical disc playback device having uniform frame interval track jump based on disc rotation angle
10/19/1993US5255015 Athermally compensated optical head for a laser scanner
10/19/1993US5255007 Method and apparatus for recording a pattern of areas of modified optical properties on an optical record carrier
10/19/1993US5254920 Seek system for sector servo disk drive
10/19/1993US5254614 Polycarbonate resin composition for optical use
10/19/1993US5254382 Intermetallic containing germanium, antimony, tellurium and indium
10/19/1993US5253402 Method of manufacturing a leaf spring mechanism
10/19/1993CA1323422C Optical recording
10/14/1993WO1993020554A1 Selectively modifiable optical data storage
10/14/1993DE4211890A1 Styrene]-allyl] alcohol copolymers - useful as compatibilising agents for polycarbonate-polystyrene blends
10/14/1993DE4211502A1 Selektiv veränderbarer optischer Datenspeicher Selectively variable optical data storage
10/13/1993EP0565381A2 Optical element and method of fabricating the same
10/13/1993EP0565376A1 Optical information recording apparatus and method capable of coping with a plurality of card-like recording mediums of different reflectances
10/13/1993EP0565338A2 Disk drives
10/13/1993EP0565281A2 Information handling system incorporated with an information security measure
10/13/1993EP0565228A1 Optical disk and method of reproducing information therefrom
10/13/1993EP0565182A1 Twisted nematic film, a method for the preparation thereof, and a display device comprising said film
10/13/1993EP0565068A2 Mirror driving apparatus for optical disk drive
10/13/1993EP0565052A1 Optical pick-up head apparatus wherein holographic optical element and photodetector are formed on semiconductor substrate
10/13/1993EP0564916A2 Compact disc analyzer system
10/13/1993EP0434769B1 Cover for mirrors of sun visors of motor vehicles
10/12/1993US5253258 Optically encoded phase matched second harmonic generation device and self frequency doubling laser material using semiconductor microcrystallite doped glasses
10/12/1993US5253245 Optical data storage tracking system
10/12/1993US5253243 Recording and reproducing timing generating apparatus
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