| 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) |
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| 03/04/1992 | EP0473415A2 Optical memory device |
| 03/04/1992 | EP0473346A2 Rewritable organic recording medium, process for the production thereof, and method of recording and erasing |
| 03/04/1992 | EP0473305A1 Disc-shaped recording media and recording/reproducing apparatus therefor |
| 03/04/1992 | EP0473301A2 Method and apparatus for determining sector status in a disk data storage device |
| 03/04/1992 | EP0473124A1 Optical type position detecting device |
| 03/04/1992 | CN1059224A Disc recording and/or reproducing apparatus |
| 03/04/1992 | CN1059223A Disc-shapeo recording medium and recording reproducing apparatus therefor |
| 03/04/1992 | CN1059222A Recording and/or reproducing apparatus for optical disk |
| 03/03/1992 | US5093832 Laser system and method with temperature controlled crystal |
| 03/03/1992 | US5093822 High-density magnetic recording and optical reproducing apparatus |
| 03/03/1992 | US5093821 Optical pickup apparatus using plural laser sources of different wavelengths |
| 03/03/1992 | US5093820 Optical disk recording/reproducing device |
| 03/03/1992 | US5093819 System having optical disk and disk drive unit |
| 03/03/1992 | US5093749 Diffraction grating having incident and emitting side gratings |
| 03/03/1992 | US5093492 Methine dyes and optical recording medium containing same |
| 03/03/1992 | US5093444 Suspension copolymerization of methyl methacrylate and either methyl acrylate or ethyl acrylate, sodium phosphate or sodium sulfate stabilizer |
| 03/03/1992 | US5093439 Self-protonation, self-doping, faster electronic and optical response to electrochemical potentials |
| 03/03/1992 | US5093174 Aluminum and gold alloy reflecting layer; durability |
| 03/03/1992 | US5092758 Disc molding apparatus |
| 03/03/1992 | CA1296699C Method for the regeneration of spent alumina-based catalysts |
| 02/27/1992 | DE4026875A1 Optische abtastvorrichtung Optical scanning device |
| 02/26/1992 | EP0472414A1 Disc-shaped recording media |
| 02/26/1992 | EP0472343A1 Disc recording and reproducing apparatus |
| 02/26/1992 | EP0472136A1 Laser printer |
| 02/26/1992 | EP0472084A2 Optical head apparatus |
| 02/26/1992 | EP0471917A2 Tracking servo system |
| 02/25/1992 | US5091983 Optical modulation apparatus and measurement method |
| 02/25/1992 | US5091982 Waveguide type optical detection apparatus |
| 02/25/1992 | US5091900 Multi-layer optical media for an optical recording and reproducing system in which non-ablative data recording is provided in a manner such that high sensitivity is achieved with an in-contact overcoat |
| 02/25/1992 | US5091793 Recording and reproducing information |
| 02/25/1992 | US5091635 Optical record medium including a data region, an identification region and a control data region, and a method of recording signals on the optical record medium |
| 02/25/1992 | US5091538 Dicyanovinylsubstituted furan derivatives |
| 02/25/1992 | US5091535 Pyrido 3,4-g!isoquinoline, pyrido 2,3-g!quinoline, pyrido 3,2-g!quinoline and derivatives |
| 02/25/1992 | US5090982 Method of producing a surface microstructure on glass |
| 02/25/1992 | CA1296454C Compatible mixtures of a polycarbonate and a methacrylate copolymer |
| 02/25/1992 | CA1296425C Method of recording a binary signal on an optically readable record carrier and apparatus for carrying out the method |
| 02/25/1992 | CA1296424C High density storage of information on a compact disc |
| 02/20/1992 | WO1992002930A1 Liquid crystal polymers and process for light-induced orientation of said polymers for the purpose of reversible data storage |
| 02/19/1992 | EP0471109A1 Manufacturing process for grooved substrates and multilayer structure |
| 02/18/1992 | US5090009 Optical information recording medium |
| 02/18/1992 | US5090008 Erasable recording media |
| 02/18/1992 | US5090007 Optically inscribable record carrier with prerecorded information |
| 02/18/1992 | US5090005 Tape recorder with means for sampling and holding focusing and tracking error signals during discontinuity of tape on surface of rotating drum |
| 02/18/1992 | US5090004 Tracking system for optical recording and/or reproducing apparatus employing a main light beam and a plurality of auxiliary light beams |
| 02/18/1992 | US5090003 Method and apparatus for adjusting target position of focusing of light beam |
| 02/18/1992 | US5090002 Positioning systems employing velocity and position control loops with position control loop having an extended range |
| 02/18/1992 | US5090001 Information recording/reproducing apparatus |
| 02/18/1992 | US5090000 Height adjusting device for a pickup |
| 02/18/1992 | US5089999 Disc control apparatus |
| 02/18/1992 | US5089693 Reader/writer for arcuately flexed data cards |
| 02/18/1992 | US5089375 Optical information recording medium and production method thereof |
| 02/18/1992 | US5089358 Optical recording medium |
| 02/18/1992 | US5089081 Adjustable pad assembly |
| 02/18/1992 | US5088805 Electrodynamic actuator for an optical write-in or read-out unit |
| 02/18/1992 | CA2049261A1 Manufacturing process for grooved substrates and multilayer structure |
| 02/12/1992 | EP0470942A1 Method and apparatus for detecting focusing errors utilizing chromatic aberration |
| 02/12/1992 | EP0470864A1 Method for recording and reproducing information |
| 02/12/1992 | EP0470807A1 Optical disc apparatus |
| 02/12/1992 | EP0470713A1 Optical recording elements |
| 02/12/1992 | EP0470546A1 Magneto-optical recording medium |
| 02/12/1992 | EP0470260A1 Methacrylic resin molding material for optical information recording medium |
| 02/12/1992 | CN1015497B Magneto-optical disc memory alloy material and preparation method thereof |
| 02/11/1992 | US5088088 Dye-polymer optical data storage media with improved recording sensitivity |
| 02/11/1992 | US5088087 Dual-metal reflective layer recordable/erasable optical media |
| 02/11/1992 | US5088086 Photochromic compounds idspersed in binder |
| 02/11/1992 | US5088083 Device for cleaning the laser lens of a compact disc player |
| 02/11/1992 | US5088082 Dust removing system for optical disk device |
| 02/11/1992 | US5088081 Method and apparatus for improved disk access |
| 02/11/1992 | US5088080 Apparatus for deriving synchronizing signal from pre-formed marks on record carrier |
| 02/11/1992 | US5088079 Carriage optics system for optical data storage system |
| 02/11/1992 | US5088078 Optical pickup apparatus |
| 02/11/1992 | US5088075 Optical disk apparatus with shortened access time and rotated method |
| 02/11/1992 | US5087704 Cyanine compounds |
| 02/11/1992 | US5087535 Applying photoresist; light exposure and development; etching |
| 02/11/1992 | US5087390 Tetraazaporphyrin dye mixtures |
| 02/11/1992 | US5087184 Optical-disk manufacturing device |
| 02/11/1992 | CA1295734C Optical recording medium with tracking tracks arranged with a constant pitch and a method for detecting tracking signal from said medium |
| 02/06/1992 | WO1992001689A1 Perfluoroalkylated naphthalocyanine derivative, production thereof, and optical recording medium |
| 02/05/1992 | EP0469929A2 Controlling currents in laser diodes |
| 02/05/1992 | EP0469879A2 Information recording device and information recording method |
| 02/05/1992 | EP0469727A1 Optical disc record/playback apparatus |
| 02/05/1992 | EP0469580A2 Optical pickup apparatus |
| 02/05/1992 | EP0469579A2 Optical disc recording apparatus |
| 02/05/1992 | EP0469553A1 Disk controller including format control unit instructing directly jump back operation |
| 02/05/1992 | EP0469552A2 Optical pickup device |
| 02/05/1992 | EP0469486A2 Apparatus for reproducing information from optical disk on which information is recorded by mark length recording |
| 02/04/1992 | US5086422 Optical disk apparatus |
| 02/04/1992 | US5086420 Focus control apparatus for use with an optical disk for determining whether a focused state has been obtained |
| 02/04/1992 | US5086419 Optical disk apparatus for controlling second optical beam based on bias information |
| 02/04/1992 | US5085925 With thermoplastic bonding layer containing tackifier resin and copolymer of ethylene and acrylic acid or acrylate or terpolymer with maleic anhydride |
| 02/04/1992 | US5085910 Regulating content of tin and tin compound on glass surface; chemical reinforcement treatment |
| 02/04/1992 | US5085909 Squarylium compounds and optical information recording medium using the same |
| 02/04/1992 | US5085498 Optically switching ferroelectric liquid crystal light valve |
| 02/04/1992 | US5085496 Optical element and optical pickup device comprising it |
| 01/29/1992 | EP0468800A1 Optical head for magneto-optical information reproducing apparatus |
| 01/29/1992 | EP0468685A2 Optical information recording-reproducing apparatus |
| 01/29/1992 | EP0468617A1 Optical pickup device |
| 01/29/1992 | EP0468613A2 Optical disk player |
| 01/29/1992 | EP0468612A2 Optical pickup |
| 01/29/1992 | EP0468468A2 Optical disk reproducing method and optical disk reproducing apparatus |