| 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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| 03/02/1983 | EP0073066A2 Optical recording apparatus |
| 03/02/1983 | EP0072854A1 Banking card for automatic teller machines and the like |
| 03/01/1983 | CA1142005A1 Wide aperture objective lens |
| 02/23/1983 | EP0072723A1 Optical device for track following by means of sampling |
| 02/23/1983 | EP0072704A2 Method and apparatus for optically recording and reproducing information |
| 02/23/1983 | EP0072378A1 Method relating to disc forming |
| 02/22/1983 | USRE31160 Tracking control apparatus for use in apparatus for reproducing video signals from a rotary recording medium |
| 02/22/1983 | US4375096 Multi-bandwidth optical playback apparatus with elongated read spot |
| 02/22/1983 | US4375091 Method and apparatus for information retrieval from an optically readable storage medium |
| 02/22/1983 | US4375088 Optically readable record carrier with track variations which provide clock and tracking signals and apparatus for recording and/or reproducing data from such a record carrier |
| 02/22/1983 | US4375058 Device for reading a printed code and for converting this code into an audio signal |
| 02/17/1983 | WO1983000460A1 High density recording medium and method for making same |
| 02/16/1983 | EP0072017A1 Methacrylate resin composition for optical information recording medium |
| 02/15/1983 | US4374324 Optical focussing device with inclination detection |
| 02/15/1983 | US4374323 Focusing apparatus for use in a system for recovering information from an optically-readable storage medium |
| 02/15/1983 | US4374077 Photopolymerization of a deaerated bead spread between a patterned surface and a bondable surface; television; audio devices |
| 02/15/1983 | CA1141462A1 Optically readable information disc |
| 02/15/1983 | CA1141366A1 Preparation of colloidal group vi-a transition metal dispersions by the polymer-catalyzed decomposition of carbonyl compounds thereof |
| 02/15/1983 | CA1141363A1 Preparation of colloidal cobalt dispersions by the polymer-catalyzed decomposition of cobalt carbonyl and cobalt organocarbonyl compounds |
| 02/15/1983 | CA1141362A1 Preparation of colloidal cobalt dispersions by the polymer-catalyzed decomposition of cobalt carbonyl and cobalt organocarbonyl compounds |
| 02/15/1983 | CA1141360A1 Preparation of colloidal dispersions of nickel, palldaium and platinum of the polymer-catalyzed decomposition of carbonyl compounds thereof |
| 02/09/1983 | EP0071377A1 Optical data storage |
| 02/08/1983 | US4373004 A polymer film containing particles of tellurium, bismuth, silver, indium or alloys thereof |
| 02/08/1983 | CA1140755A1 Medium for recording by thermal deformation |
| 02/01/1983 | US4371954 Reversible memory structure with thermo-optical writing and optical reading and process for writing and erasing said structure |
| 02/01/1983 | US4371899 Time base error correction system for player |
| 02/01/1983 | US4371894 Video disc transducer system and method |
| 02/01/1983 | CA1140675A1 Video disc player |
| 02/01/1983 | CA1140673A1 Rotary head assembly |
| 01/26/1983 | EP0070761A1 Optical record-playback device for a pre-recorded information carrier |
| 01/26/1983 | EP0070552A2 Optical head |
| 01/26/1983 | EP0070514A2 A method for manufacturing an information memory disk |
| 01/26/1983 | EP0070408A1 Optical signal reproducing system |
| 01/25/1983 | US4370740 Rotary recording medium |
| 01/25/1983 | US4370679 Gain correction system for videodisc player apparatus |
| 01/25/1983 | US4370391 Metal oxide stabilizer |
| 01/25/1983 | CA1220271B Method and apparatus for information retrieval from an optically readable storage medium |
| 01/25/1983 | CA1140260A1 Method and apparatus for information retrieval from an optically readable storage medium |
| 01/19/1983 | EP0070070A1 Opto-electronic apparatus for writing and/or reading recording tracks by means of a radiation beam |
| 01/19/1983 | EP0070031A2 High density optically readable disc-type information carrier |
| 01/18/1983 | US4368957 Wide aperture objective lens |
| 01/18/1983 | CA1139878A1 Opto-electronic focussing error detection arrangement |
| 01/11/1983 | US4368526 Servo control system for optical system which focuses a converging light beam on a recording disc |
| 01/11/1983 | US4367930 Sound reproduction method and apparatus |
| 01/11/1983 | CA1139442A1 System, method and record medium for reproducing pictures and related audio information |
| 01/11/1983 | CA1139440A1 Single laser information recording and focusing apparatus |
| 01/11/1983 | CA1139354A1 Thermal deformation record device |
| 01/05/1983 | EP0068904A1 Apparatus for reading information stored in a track pattern on a radiation reflecting record |
| 01/05/1983 | EP0068801A2 Optical storage medium |
| 01/05/1983 | EP0068757A1 Objective lens assemblies for optical disc players |
| 01/05/1983 | EP0068548A2 Apparatus for inscribing and/or reading a record carrier |
| 01/05/1983 | EP0068390A2 An optical head |
| 01/04/1983 | US4367543 Optical disc player signal reading device with improved drive structure for moving optical pickup in orthogonal directions |
| 12/28/1982 | US4366564 Apparatus for writing digital information in a disc-shaped optically readable record carrier |
| 12/22/1982 | EP0067414A2 Method and apparatus for reading a bar code |
| 12/22/1982 | EP0067197A1 Optical disc and method of using same |
| 12/21/1982 | US4365324 Eccentricity control device |
| 12/21/1982 | US4365323 Optic read unit for scanning a record carrier having a radiation-reflecting information structure |
| 12/21/1982 | US4365258 Optical disc unit, fabrication method and cooperating write and/or read apparatus |
| 12/21/1982 | US4365257 Stretched-film optical recording disc |
| 12/21/1982 | US4364986 Dye-containing layer of a film-forming polymeric binder and the use thereof in an information recording element |
| 12/21/1982 | CA1138109A1 Recording member |
| 12/21/1982 | CA1138107A1 Acousto-optic pulse imaging system |
| 12/21/1982 | CA1138106A1 Optical disk and optical information processor |
| 12/15/1982 | EP0067095A2 Method for making rigid optical discs |
| 12/15/1982 | EP0066590A1 Reading information stored in multiple frame format. |
| 12/14/1982 | US4364118 Optical disk and optical information processor |
| 12/14/1982 | US4363961 Automatic focusing apparatus |
| 12/14/1982 | US4363870 Method for making a reflective laser recording and data storage medium with a dark underlayer |
| 12/14/1982 | US4363844 Base with electroconductive or electromagnetic reflective layer with depressions and insulating, transparent protective cover |
| 12/14/1982 | CA1137629A1 High information density laser image recording method and apparatus |
| 12/14/1982 | CA1137628A1 Record carrier with tracks of different phase depths |
| 12/14/1982 | CA1137527A1 Machine for folding plastic sheet material |
| 12/14/1982 | CA1137345A1 Process for making a reflective data storage medium |
| 12/07/1982 | US4363116 Method, apparatus and record carrier body for optically writing information |
| 11/25/1982 | WO1982004159A1 An information recording medium |
| 11/25/1982 | WO1982004119A1 Improved optical disc unit, and cooperating record/playback apparatus |
| 11/23/1982 | US4360908 Physically optimized optical disc structure, method and apparatus |
| 11/23/1982 | US4360895 Permanent memory structure with thermo-optical writing and optical reading and writing process in such a structure |
| 11/23/1982 | US4360824 Systems for recording both information and pilot signals directly on recording medium |
| 11/23/1982 | US4360820 Laser recording medium |
| 11/23/1982 | US4360728 Banking card for automatic teller machines and the like |
| 11/23/1982 | US4360583 Ether or ester substituted tetraheterofulvalene and a halocarbon |
| 11/23/1982 | US4360137 Planetary-gear drive for looper |
| 11/23/1982 | CA1136274A1 Recording material and process for preparation thereof |
| 11/23/1982 | CA1136273A1 Optical information processor |
| 11/17/1982 | EP0064897A1 Information carrier disc with angular coding and rotation drive system for such a disc |
| 11/17/1982 | EP0064777A1 Optically readable information disc having a reflection layer formed from a metal alloy |
| 11/17/1982 | EP0064671A1 Optical disk apparatus |
| 11/16/1982 | US4359750 Optical disc structure |
| 11/16/1982 | US4359635 Tracking device |
| 11/16/1982 | CA1135851A1 Optical system for reproducing information |
| 11/16/1982 | CA1135850A1 Information-recording element having a dye-containing auxiliary layer |
| 11/10/1982 | EP0064438A1 Recording/reproducing device comprising a movable pregrooved record carrier |
| 11/10/1982 | EP0064395A1 Apparatus for reproducing an audio disc |
| 11/10/1982 | EP0064273A2 Apparatus for processing information optically recorded on a disk |
| 11/10/1982 | EP0064196A1 Optical data recording and reproducing apparatus |
| 11/09/1982 | US4358852 Method of modulation and demodulation of data and apparatus for carrying out the same |
| 11/09/1982 | US4358796 Spindle servo system for videodisc player |
| 11/09/1982 | US4358780 Optical information record member |