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)
05/1991
05/07/1991US5013594 Optical information recording medium and its production
05/07/1991US5013593 Information storage medium and process for producing the same
05/07/1991US5013136 Method and apparatus for anamorphically shaping and achromatically deflecting electromagnetic beams
05/07/1991US5013107 Polarization selective holographic optical element
05/07/1991CA2029225A1 Method and apparatus for simultaneously reading both sides of an optical storage disk
05/07/1991CA2029221A1 Mass loader mechanism and method
05/02/1991WO1991006122A1 High resolution position sensor
05/02/1991WO1991006097A1 Device for adjusting focal point of an optical pickup device
05/02/1991WO1991005979A1 Polyaniline compositions, process for their preparation and uses thereof
05/02/1991EP0425321A2 Liquid crystal cells and their use for recording information or for projecting an image
05/02/1991EP0425278A2 Optical record reproducing method and apparatus utilizing stimulated photon echo
05/02/1991EP0425125A2 System with a multi-function optical disk and drive for it
05/02/1991EP0425088A2 Information storage in holograms
05/02/1991EP0425048A2 Apparatus for verification of data established on a record carrier during write
05/02/1991EP0425042A1 Method of and device for detecting parameters of a digitally controllable processing circuit for controlling the scanning of a data carrier
05/02/1991EP0424986A1 Method and apparatus for manufacturing a flexible optical information recording medium
05/02/1991EP0424980A2 Optical disk drive device and information storage device
05/02/1991EP0424978A2 Optical disk drive device and information storage device
05/02/1991EP0424785A2 Medium for optical recording
05/02/1991DE3936033A1 Spurregelkreis Tracking control loop
05/02/1991DE3936032A1 Fokusregelkreis Focus control loop
05/01/1991CN1051102A Magnetic-light recording carries
04/1991
04/30/1991US5012464 Computer-controlled laser imaging system with automatic beam start at line beginning
04/30/1991US5012463 Optical read/write storage system for flexible media having bernoulli stabilization at the optical head
04/30/1991US5012461 Disk recording apparatus for re-establishing a recording mode at a desired address
04/30/1991US5012460 RAM head positioning and tracking system
04/30/1991US5011967 Method for preparing aromatic bischloroformate compositions
04/30/1991US5011756 Storage of optical information using photochiroptical effect
04/30/1991US5011723 Optical information recording medium
04/30/1991US5011248 Thin-film optical function element, and optical head using the same
04/30/1991US5011245 Radiation scanning apparatus
04/30/1991CA1283732C Method of optically recording and erasing information
04/24/1991EP0424250A2 Servo control circuit for image rotator
04/24/1991EP0424218A2 Processing for producing optical disk
04/24/1991EP0423731A2 Track access device and tracking control device
04/24/1991EP0423672A2 Optical card processing apparatus
04/24/1991EP0423418A2 Magnetooptical recording media
04/24/1991EP0423364A1 Optical recording/reproducing apparatus
04/24/1991EP0423295A1 Optical reading device for an optical recording medium.
04/23/1991US5010582 Pickup driving device for disk player
04/23/1991US5010541 Apparatus having a movable portion and a fixed portion for reproducing data from an optical disk by a light beam
04/23/1991US5010539 Optical disk device for storing both analog and discrete data and which utilizes both CLV and CAV techniques
04/23/1991US5010538 Focus servo apparatus
04/23/1991US5010537 Optical disc device with multi-head slider and tracking control
04/23/1991US5010535 Apparatus and process for measuring data disk runout and acceleration parameters
04/23/1991US5010534 Optical information recording-reproducing apparatus
04/23/1991US5010246 Optical head apparatus applicable to optical disc apparatus
04/23/1991US5009987 Optical recording medium containing IR-ray absorptive compound
04/23/1991US5009986 Naphthalocyanine based compound and optical recording medium containing the same
04/23/1991US5009818 Method of manufacturing an optical information recorded disc
04/23/1991US5009762 Sputtering barium titanate and strontium titanate with adjusting target of titanium or titanium oxide
04/21/1991WO1991006098A1 Sealed-type optical card
04/21/1991CA2035466A1 Optical card of closed type
04/19/1991WO1991006035A1 Light-sensitive recording media
04/19/1991CA2070409A1 Light sensitive recording media
04/18/1991WO1991005344A1 Single polymer layer recordable/erasable optical media
04/18/1991WO1991005343A1 Single retention/reflective layer recordable/erasable optical media
04/18/1991WO1991005342A1 Optical data recording medium and method of producing the same
04/18/1991WO1991005341A1 Method and apparatus for pre-compensation in an optical disc
04/18/1991WO1991005340A1 Detector circuit
04/18/1991WO1991005339A1 Counter
04/18/1991WO1991005338A1 Direction-determination logic
04/18/1991WO1991005337A1 Coil arrangement for a focussing or track control circuit
04/18/1991WO1991005335A1 Digital optical sound system
04/17/1991EP0422947A2 Optical recording/reproducing device
04/17/1991EP0422851A2 Deceleration control system
04/17/1991EP0422774A2 Optical memory element and protective sheet for use with the same
04/17/1991EP0422692A1 Flexible optical information recording medium and method of manufacturing the same
04/17/1991EP0422650A2 Method for securing optical parts enclosed by a ring member to a support member
04/17/1991EP0422227A1 Optical disc recording/reproducing apparatus
04/17/1991EP0245511B1 Optical card reader
04/17/1991CN1050787A Recording media
04/17/1991CN1050786A Coil arrangement
04/17/1991CN1012401B Optical disk reproducing apparatus
04/16/1991US5008888 Semiconductor laser driving apparatus
04/16/1991US5008873 Tilt adjustment mechanism for object lens driving device
04/16/1991US5008872 Optical disc reproduction apparatus which detects maximum audio signal level recorded on an optical disk
04/16/1991US5008687 Data storage medium
04/16/1991US5008686 Optical scanning device for scanning a predetermined surface with a plurality of light beams
04/16/1991US5008552 Data recording and reproducing apparatus for an optical card
04/16/1991US5008521 Reproducing apparatus for an optical recording medium
04/16/1991US5008401 Cyanine compounds
04/16/1991US5008176 Information recording medium having a glass substrate
04/16/1991US5008129 Methods of fabricating optical records with overcoating
04/16/1991US5007713 Beam converting apparatus with a parallel light beam input and output from one prism plane
04/16/1991US5007712 Optical pick-up unit
04/16/1991US5007690 Holographic data storage and retrieval system
04/11/1991DE3932832A1 Richtungslogik Directional logic
04/11/1991DE3932831A1 Detektionsschaltung Detection circuit
04/10/1991EP0421871A2 Record data generating method
04/10/1991EP0421771A2 Lens actuator
04/10/1991EP0421761A2 Optical data storage medium formed of UV-curable resin and process for the production thereof
04/10/1991EP0421342A2 Focus draw-in method in an optical disc device
04/10/1991EP0420982A1 Optical card having a light-absorbing layer
04/10/1991CN1050637A Detection circuit
04/10/1991CN1050636A Counting device
04/10/1991CN1050635A Method and apparatus for precomcpension in an optical disc
04/10/1991CN1050634A Imformation processor and disk memory used in same
04/10/1991CN1050614A Directional logic circuit
04/10/1991CN1012330B Method for manufacture of information recording disk
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