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)
06/1991
06/05/1991CN1052002A Single polymer layer recordable/erasable optical media
06/05/1991CN1012766B Optical memory
06/04/1991US5022022 Support structure for an optical pickup electrically adjustable in two directions
06/04/1991US5022021 Apparatus for detecting moving direction of light beam spot illuminated on optical information recording medium having tracks
06/04/1991US5021894 Recorded data demodulation circuit
06/04/1991US5021641 Hand-held bar code scanner with jointly mounted scanning mirrors
06/04/1991US5021276 Optical data recording medium and manufacturing method thereof
06/04/1991US5020207 Process for producing magnetic hub
05/1991
05/30/1991WO1991007749A1 Optical pickup device and magnetooptical reproducing apparatus
05/30/1991WO1991007747A1 Actuator assembly for optical disk systems
05/30/1991WO1991007651A1 Two-photon laser scanning microscopy
05/30/1991CA2030922A1 Optical memory and information processing apparatus
05/29/1991EP0429346A1 Manufacturing method for optical disks
05/29/1991EP0429219A2 Apparatus for detection of optical wavefront polarization state
05/29/1991EP0429045A2 Optical disc reproducing apparatus
05/29/1991DE4033695A1 Optical draw plate - has a translucent substrate, an organic writing layer and a silver reflecting layer
05/29/1991DE4023984A1 Optical plate for reading directly after writing - comprising transparent substrate and indolenine:penta:methine:cyanine, for high reflective capacity
05/29/1991DE3939049A1 Polymer compsns. with liq. crystal phases - have mesogenic gps. contg. cross-polarising 2,3-di:fluoro-1,4-phenylene gps. and opt. linked via spacer gps.
05/28/1991US5020048 Optical information recording medium having a protective film which can be stripped
05/28/1991US5020047 Method and device for radiation beam scanning a radiation-sensitive surface of a rotating carrier
05/28/1991US5020046 Apparatus for reproducing recorded data from a disc employing variable regenerated clock delay compensating for variable recording conditions
05/28/1991US5020045 Focus acquisition servo system and associated method
05/28/1991US5020044 Head positioning system for use in information recording/reproducing device with means for deriving track crossing signal from tracking error signal
05/28/1991US5019701 Automatic focusing apparatus with moire fringes
05/28/1991US5019487 Method of manufacturing a metal matrix and a master disc suitable for the manufacture of matrices
05/28/1991US5019476 Optical recording medium
05/28/1991US5018962 Injection molding die apparatus for use in the production of substrate of optical disk
05/28/1991US5018836 Optical disc apparatus lens drive apparatus and method for the manufacture of such
05/28/1991US5018804 Laser pick-up
05/28/1991CA2030899A1 Information rercording media
05/23/1991CA2030392A1 Substituted naphthalocyanines and their use
05/22/1991EP0428308A2 Tracking control circuit
05/22/1991EP0428208A2 Sector slip with address collision recovery for write once recording media
05/22/1991CA2029769A1 Method for the manufacture of an optically readable disc, and discs obtained by this method
05/21/1991US5018155 Semiconductor laser driving apparatus to be used for optical information recording and reproducing apparatus
05/21/1991US5018128 Apparatus and medium for recording erasable information
05/21/1991US5018127 Light emitting apparatus having a plurality of light emitting points
05/21/1991US5018126 Checking media operations and recording during optical recording
05/21/1991US5018125 Signal processing circuit for detecting a tracking error for an optical disk apparatus
05/21/1991US5018124 Information recording method and apparatus for recording information on track positioned at least two tracks ahead when abnormality of tracking servo is detected
05/21/1991US5018123 Optical information recording medium and method for recording information on said medium and reproducing information therefrom
05/21/1991US5018122 Linear motor actuator for moving an optical read/write head
05/21/1991US5018121 Optical recording/reproducing focusing apparatus
05/21/1991US5018120 Optical recording medium track indexing system
05/21/1991US5018033 Guide mechanism for head transfer apparatus
05/21/1991US5017768 Optical focusing control apparatus
05/21/1991US5017547 Use of vacuum for improved density in laser-induced thermal dye transfer
05/21/1991US5017414 Method for manufacturing a second surface optical storage device
05/21/1991US5017073 Transport system for conveying workpiece between first and second media
05/21/1991US5016954 Optical pickup and hologram therefor
05/16/1991WO1991006950A1 Automatic track control
05/16/1991WO1991006949A1 Automatic focussing control
05/16/1991WO1991006887A1 Sulfonated polyaniline salt compositions, processes and uses
05/16/1991WO1990010916A3 Erasable optical wallet-size data card
05/15/1991EP0427478A2 Disk recording and reproducing apparatus using two laser beams
05/15/1991EP0427441A2 Objective lens actuator
05/15/1991EP0427330A2 Method and apparatus for simultaneously reading both sides of an optical storage disk
05/15/1991EP0427329A2 Optical disc cartridge loading apparatus
05/15/1991EP0427302A2 Master optical disk recording apparatus
05/15/1991EP0427259A2 Track access control methods and apparatus for disk drives
05/15/1991EP0426879A1 Optical recording and/or reproducing apparatus
05/15/1991EP0426872A1 Optical disc recording device
05/15/1991EP0426717A1 Optical memory.
05/15/1991CN1051446A Single retention/reflective layer recrdable/erasable optical media
05/15/1991CN1051445A Track control circuit
05/15/1991CN1051444A Focus control circuit
05/15/1991CN1051430A Grating objective and grating-beam shaper and optical scanning device comprising at least are of said elements
05/14/1991US5016240 Optical recording medium
05/14/1991US5016239 Recording method and apparatus
05/14/1991US5016237 Prism optics stable with respect to wavelength and temperature variations and optical information processing apparatus
05/14/1991US5016235 Arrangement for reading an optically readable light reflective carrier
05/14/1991US5016234 Two-laser collimated beam optical head with monitor
05/14/1991US5016233 Optical scanning arrangement for maintaining constant the light output of a laser beam or the laser current
05/14/1991US5016114 Digital copier apparatus with external laser card storage medium and image compression variable with available memory
05/14/1991US5015932 Actuator driving circuits
05/14/1991US5015836 Source intensity adjustment apparatus for optical channel
05/14/1991US5015835 Optical information reading and writing device with diffraction means
05/14/1991US5015548 Thin film optical recording layer of alloy of antimony and tellurium, recording information by focusing a laser
05/14/1991US5015338 Method of manufacturing a stamper for formation of optical information carrying disk
05/14/1991CA1284222C Tracking system for optical disc memory
05/14/1991CA1284126C Micro replication process
05/08/1991EP0426472A2 Information recording and/or reproducing apparatus for timing switching of a jumping pulse from an intermittently detected tracking signal
05/08/1991EP0426447A2 Track jump control circuit
05/08/1991EP0426437A2 Optical memory device
05/08/1991EP0426409A2 Multilayered optial disk
05/08/1991EP0426248A2 Grating objective and grating-beam shaper, and optical scanning device comprising at least one of said elements
05/08/1991EP0426162A2 A disk player
05/08/1991EP0426129A2 Injection compression molding method for compact discs or the like
05/08/1991EP0426053A2 Optical head for optical information recording medium
05/08/1991EP0426035A2 Optical head
05/08/1991EP0425932A1 Quinoxaline-pentamethine dyestuffs and optical recording medium containing said new dyestuffs
05/08/1991DE3936624A1 Use of poly-indane(s) as optical data storage substrates - esp. compact discs
05/08/1991CN1051258A Method of recording and reproducing information
05/07/1991US5014259 Recording medium having an insulating layer
05/07/1991US5014257 Optical readout circuit for producing waveforms having sharp edges
05/07/1991US5014256 Photodisc apparatus with gain control of tracking servo loop
05/07/1991US5014253 Optical pick-up for selective playback and recording on a magneto-optically recorded medium
05/07/1991US5013901 Tracking control method for eliminating a tracking error due to a movement of an objective lens
05/07/1991US5013635 Information storage medium
05/07/1991US5013634 Infrared absorbers, photostability, heat resistance, methine dyes
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