| 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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| 08/23/1983 | CA1152610A1 Microfiche information retrieval and control system utilizing machine readable microfiche and visually readable microfiche |
| 08/23/1983 | CA1152485A1 Preparation of colloidal dispersions of ruthenium, rhodium, osmium and iridium by the polymer-catalyzed decomposition of carbonyl cluster compounds thereof |
| 08/23/1983 | CA1152484A1 Preparation of colloidal iron dispersions by the polymer-catalyzed decomposition of iron carbonyl and iron organocarbonyl compounds |
| 08/18/1983 | WO1983002845A1 Optical recording/reproduction disc |
| 08/17/1983 | EP0086065A1 Radiation-sensitive record disc |
| 08/17/1983 | EP0086009A1 Optically readable information disc |
| 08/17/1983 | EP0086008A2 Semiconductor device for generating at least two radiation beams |
| 08/17/1983 | EP0085804A2 Narrow-bodied, single-and twin-windowed portable laser scanning head for reading bar code symbols |
| 08/16/1983 | US4399529 Optical device for recording and reading on a data carrier |
| 08/16/1983 | US4399471 Apparatus for recording image information and sound recordings, presented as electrical input signals, on an image record plate |
| 08/16/1983 | CA1152144A1 Graphic forms overlay apparatus |
| 08/16/1983 | CA1152021A2 Providing glass plate master disk with metal layers and stiffening plate |
| 08/16/1983 | CA1151868A1 Thermal and mechanical barrier layers for optical recording elements |
| 08/10/1983 | EP0085297A2 High quality delta modulator |
| 08/09/1983 | US4398223 System for recording video information on a record card |
| 08/09/1983 | US4398203 Thermo-optical method for writing information and an information medium for the application of said method |
| 08/09/1983 | US4397923 Method of manufacturing an optical recording element |
| 08/09/1983 | US4397805 Polymethyl methacrylate |
| 08/09/1983 | CA1151769A2 Method and apparatus for controlling the speed of a movable information storage medium |
| 08/04/1983 | WO1983002705A1 Interactive video disc systems |
| 08/03/1983 | EP0084871A2 Method and apparatus for reducing semiconductor laser optical noise |
| 08/03/1983 | EP0084778A2 Multiple variable rate audio message recording and playback |
| 08/03/1983 | EP0084729A1 Recording elements |
| 08/03/1983 | EP0084728A1 Technique for monitoring galvo angle |
| 08/03/1983 | EP0084727A1 Galvo position sensor for improved track selection in optical data |
| 08/03/1983 | EP0084703A2 Partial beam focus sensing device |
| 08/03/1983 | EP0084534A1 High density recording medium and method for making same. |
| 08/02/1983 | USRE31334 Acoustooptic scanner apparatus and method |
| 08/02/1983 | US4397010 Optical servo-positioning system |
| 08/02/1983 | US4397009 Device for locating a desired information track |
| 08/02/1983 | US4396997 Liquid crystal information storage and retrieval system |
| 08/02/1983 | US4396701 Highly absorptive dye-containing underlayer for laser recording and data storage media |
| 07/26/1983 | US4395211 Method and device for manufacturing a plastic record carrier |
| 07/26/1983 | US4395122 Defect detection system |
| 07/26/1983 | CA1150837A1 Laser recording medium |
| 07/26/1983 | CA1150836A2 Focus servo system for optical player apparatus |
| 07/26/1983 | CA1150835A2 Apparatus for recovering a video signal from a video disc |
| 07/26/1983 | CA1150834A2 Time base error |
| 07/26/1983 | CA1150833A2 Spindle servo system |
| 07/21/1983 | WO1983002428A1 Composition for laser beam recording/reading medium |
| 07/20/1983 | EP0083994A2 Optical recording medium |
| 07/20/1983 | EP0083991A2 Optical type information recording medium |
| 07/20/1983 | EP0083951A1 Optical recording disc |
| 07/20/1983 | EP0083838A2 Focusing initialisation control system |
| 07/20/1983 | EP0083805A1 Optical information tracking apparatus |
| 07/20/1983 | EP0083686A1 Audio/video quality monitoring system |
| 07/19/1983 | US4394755 Bearing arrangement for an objective of an optical apparatus for writing and/or reading recording tracks by means of a radiation beam |
| 07/19/1983 | US4394667 Radial access drive for an optical disk recorder |
| 07/19/1983 | US4394661 Recording material for storage of digital information and a recording method for storage of digital information |
| 07/19/1983 | US4394438 Method of manufacturing an optically readable information carrier using deep U.V. radiation |
| 07/19/1983 | CA1150411A1 Record carrier with information tracks on different slopes |
| 07/19/1983 | CA1150410A1 Optical recording disk |
| 07/19/1983 | CA1150409A1 Record carrier containing information in an optically readable structure, as well as read apparatus for said record carrier |
| 07/13/1983 | EP0083475A1 Optical data recording and reproducing apparatus |
| 07/13/1983 | EP0083452A1 Control circuit for controlling light source in optical disc device |
| 07/13/1983 | EP0083396A1 An optical storage medium |
| 07/12/1983 | US4393419 Synchronizing signal detection protective circuit |
| 07/12/1983 | US4393414 Horizontal-rate phase-change of TV pixel distribution among multiple recorder tracks for dropout concealment |
| 07/12/1983 | US4393387 Beam recording apparatus effecting the recording by a plurality of beams |
| 07/12/1983 | US4393126 Method for manufacturing in-line hologram lens |
| 07/07/1983 | WO1983002356A1 Apparatus for preformatting an optical disk |
| 07/07/1983 | WO1983002355A1 Technique for monitoring galvo angle |
| 07/07/1983 | WO1983002354A1 Galvo position sensor for improved track selection in optical data disk system |
| 07/07/1983 | WO1983002353A1 Methods of preformatting an optical disk |
| 07/07/1983 | WO1983002254A1 Optical recording media |
| 07/06/1983 | EP0083193A1 Apparatus for preformatting an optical disk |
| 07/05/1983 | US4392219 Method and device for recording and reproducing tracking information |
| 07/05/1983 | CA1149511A1 Optical device for access to a track carried by a data carrier and optical memory system incorporating such a device |
| 07/05/1983 | CA1149510A1 Process for coding binary signals for numbering images or pictures stored on a recording medium and audio visual signal transmission apparatus incorporating such a device |
| 06/29/1983 | EP0082716A1 Methods of preformatting an optical disk |
| 06/29/1983 | EP0082390A2 Method for detecting excentricity in a video disc and in a video disc player |
| 06/29/1983 | EP0082357A1 Semiconductor laser driving system |
| 06/28/1983 | US4390781 Method and apparatus for detecting focussing error signal of objective lens |
| 06/28/1983 | US4390487 Plastic such as polyvinyl chloride mixed with carbon black |
| 06/28/1983 | CA1149062A1 Lens assembly for a video recorder-playback machine |
| 06/28/1983 | CA1149061A1 Information recording element with lacquer screening layer |
| 06/28/1983 | CA1149060A1 Multilayer information disc |
| 06/28/1983 | CA1149059A1 Optical read apparatus for reading a disc-shaped record carrier |
| 06/22/1983 | EP0081786A2 Storage medium track pitch detector |
| 06/22/1983 | EP0081650A2 Apparatus for reading an angularly multiplexed optical recording medium |
| 06/22/1983 | EP0081649A2 Method for forming optical discs |
| 06/21/1983 | US4389719 Optically readable information disk |
| 06/21/1983 | US4389717 Apparatus for writing and/or reading information on a rotary information disc with the aid of a radiation beam |
| 06/21/1983 | US4389712 High information density laser image recording method and apparatus |
| 06/21/1983 | US4389101 Device for pivoting an optical element under electro-dynamic control |
| 06/15/1983 | EP0081184A2 Banded and interleaved videodisc format |
| 06/15/1983 | EP0081138A2 Optical recording and reproducing disc |
| 06/15/1983 | EP0081064A1 Optical disc defect measurement by refraction |
| 06/15/1983 | EP0081055A1 Record carrier with a multi-coloured micro-image, especially in the form of a micro map, and process for the manufacture of this record carrier |
| 06/14/1983 | US4388655 Method and apparatus for recording and reproducing video and sound |
| 06/14/1983 | US4388400 Heat-mode recording material |
| 06/14/1983 | CA1148007A1 Method for making a reflective laser recording and data storage medium with a dark underlayer |
| 06/08/1983 | EP0080884A2 A recording medium and a method for the production thereof |
| 06/07/1983 | US4387452 Optical device for the recording and reading of data media and optical memory system incorporating such a device |
| 06/07/1983 | US4387381 Optical recording medium and information record with tracking aid |
| 06/07/1983 | US4386823 Objective lens driving device |
| 06/07/1983 | CA1147860A1 Focus detector |
| 06/07/1983 | CA1147859A1 Self-compensating focus system for a reflective video disc |
| 06/07/1983 | CA1147858A1 System for recording digital information in a pulse-length modulation format |
| 06/01/1983 | EP0080256A2 Information recording/reproducing apparatus |