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)
06/1983
06/01/1983EP0080212A1 Optical memory apparatus
05/1983
05/31/1983CA1147463A1 Optical recording disc and related method of manufacture
05/31/1983CA1147462A1 Reflective data storage medium made by silver diffusion transfer
05/25/1983EP0079741A2 Archival recording media with improved information layer and associated substrate
05/25/1983EP0079669A1 Optical type information read/write apparatus
05/24/1983US4385376 Method of making an optical memory disk and a product thereby
05/24/1983US4385373 Device for focus and alignment control in optical recording and/or playback apparatus
05/24/1983US4385372 Reflective optical data storage and laser recording media having grooved dielectric encoded prerecorded information
05/24/1983US4385305 Recording member
05/24/1983US4385303 Optical recording and reproducing disc
05/24/1983CA1147058A1 Record carrier with sector address sections
05/18/1983EP0079262A1 Method of making disc copies from an original recording on a matrix
05/18/1983EP0079233A2 Method of archival data recording and related media
05/18/1983EP0079232A2 Archival data recording system using low power radiation and related media
05/18/1983EP0079231A2 Optical recording method for archival digital data storage
05/18/1983EP0079230A2 Preparation of archival recording media for digital data storage
05/18/1983EP0079229A2 Apparatus for recording digital data on an archival optical data storage medium using low power radiation
05/18/1983EP0079109A1 Electro-optical apparatus
05/18/1983EP0078831A1 Improved optical disc unit, and cooperating record/playback apparatus
05/17/1983US4384297 Laser recorder reproducing a picture having half-tones of high accuracy
05/11/1983WO1983001704A1 Archival recording media with improved information layer and associated substrate
05/11/1983WO1983001703A1 Method of archival data recording and related media
05/11/1983WO1983001702A1 Preparation of archival recording media for digital data storage
05/11/1983WO1983001701A1 Archival recording media for digital data storage using low power radiation
05/11/1983WO1983001700A1 Deposition techniques for archival recording media for digital data storage
05/11/1983WO1983001699A1 Archival data recording system using low power radiation and related media
05/11/1983EP0078673A2 Magneto-optical head assembly
05/11/1983EP0078580A1 Apparatus for reading an optically readable information structure on a record carrier
05/11/1983EP0078492A2 Method of controlling storage device
05/11/1983EP0007902B1 Automatic focusing system
05/10/1983US4383311 Optical recording medium and information record with indented overcoat
05/10/1983US4383279 Reproduction of special purpose information on a video disc
05/10/1983US4383262 Laser data recording method
05/10/1983US4383261 Method for laser recording utilizing dynamic preheating
05/10/1983US4383024 Method of making a highly absorptive dye-containing underlayer for laser recording and data storage
05/04/1983EP0078060A1 Method and apparatus for recovering information from a selected track on a record disc
05/04/1983EP0078059A2 Improved audio/video signal recording method
05/04/1983EP0077917A2 Apparatus for the verification of documents
05/03/1983US4382103 Master for device replication
05/03/1983CA1145845A1 Optical information recording apparatus
05/03/1983CA1145844A1 Optical recording medium and method of use thereof
04/1983
04/28/1983WO1983001533A1 Three beam optical memory system
04/28/1983WO1983001532A1 Preformatted optical media for use in an optical memory system
04/28/1983WO1983001530A1 Optical memory system providing improved track following
04/28/1983WO1983001529A1 Optical memory system providing improved fucusing control
04/27/1983EP0077644A2 Optical memory system providing improved track following
04/27/1983EP0077643A2 Optical memory system providing improved focusing control
04/27/1983EP0077642A2 Three beam optical memory system
04/27/1983EP0077641A2 Method for improved focusing control in an optical memory system
04/27/1983EP0077623A1 Optical recording and retrieving disc
04/27/1983EP0077581A1 Optical scanning unit
04/26/1983US4381557 Optical focus sensor
04/26/1983US4381556 Videodisc reader with longitudinally displaced turntable
04/26/1983CA1145465A1 Laser recording medium
04/26/1983CA1145463A1 Solid state electro-optical track follower array
04/26/1983CA1145170A1 Apparatus and method for correcting imperfection in a polygon used for laser scanning
04/20/1983EP0077241A1 Process for removing an information carrying disc from the mould, and apparatus for carrying out the process
04/19/1983US4380769 Element for recording by thermal deformation
04/19/1983CA1145040A1 Apparatus for the pointwise scanning of an information surface
04/19/1983CA1145039A1 Apparatus for reading a disk-shaped record carrier
04/19/1983CA1145038A1 Optical scanning apparatus with focussing system
04/19/1983CA1144792A1 Optical focussing-error detection system
04/13/1983EP0076347A1 Optical track segment intercept apparatus
04/13/1983EP0076330A1 Copy controlling system
04/12/1983US4380016 Protected optical disc
04/12/1983US4380015 Recording system for recording information on record medium by using energy beam
04/12/1983US4379507 Optical disk cassette
04/12/1983CA1144641A1 Method for recording multiple data segments on a storage disc
04/12/1983CA1144483A1 Manufacture of blanks for recording discs utilizing coextrusion and blanks and records made thereby
04/06/1983EP0075676A2 Optical track position detecting apparatus and optical disc apparatus using the same
04/05/1983US4379299 Recording structure for direct read after write recording
03/1983
03/30/1983EP0075461A2 An optical information recording medium
03/30/1983EP0075192A2 An optical head
03/29/1983US4378491 Optical apparatus for sensing information from a phonograph record for controlling spacing and tracking of the pick-up relative to the record
03/29/1983CA1143836A1 Optical disk
03/29/1983CA1143834A1 Method and apparatus for tracking an optically readable information track
03/23/1983EP0074656A2 Method and apparatus for encoding a binary digital information signal
03/22/1983CA1143476A1 Optically readable information disk, method of manufacturing same and device for performing the method
03/22/1983CA1143475A1 Laser pyrographic reflective recording medium
03/22/1983CA1143474A1 Disc-shaped optically readable record carrier used as a data storage medium
03/22/1983CA1143473A1 Record carrier with servo areas for speed correction
03/17/1983WO1983000943A1 Optical information storage
03/17/1983WO1983000938A1 Highly absorptive dye-containing underlayer for laser recording and data storage media
03/17/1983WO1983000937A1 Method for making a reflective laser recording and data storage medium with a dark underlayer
03/16/1983EP0074158A2 Data-bearing masters for replication
03/16/1983EP0074157A1 Optical data store
03/16/1983EP0074131A1 Swinging-arm device for an optical scanning unit
03/16/1983EP0074115A1 Off-axis light beam defect detector
03/16/1983EP0074058A2 Disc coating method
03/16/1983EP0073921A2 Method of detecting light spot control signal
03/15/1983US4376572 Pivoting mirror device
03/15/1983CA1143062A1 Apparatus for correcting for temperature- induced tracking errors in a system for recovering information from a recording disc
03/15/1983CA1143061A1 Storage disc system with uniform recording density
03/15/1983CA1143060A1 System for controlling the change of read side for an optical reader for an information carrier and an optical reader including such system
03/15/1983CA1142719A1 Method of producing plate-shaped body
03/09/1983EP0073519A2 Optical disc player
03/09/1983EP0073304A1 A method of storing data in a storage device
03/08/1983US4376303 Quasi-zoom lens optical focus sensor
03/08/1983CA1142645A1 Video disc composition and method for molding
03/08/1983CA1142644A1 Video disc player
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