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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10/25/1983 | US4412264 Magneto-optic recording medium |
10/25/1983 | US4412231 Light recording medium |
10/25/1983 | US4411983 Method for processing an image-forming material |
10/25/1983 | US4411500 Optical system for reproducing information |
10/25/1983 | CA1155955A1 Self-synchronizing clock source for optical memories |
10/25/1983 | CA1155690A1 Process and recording media for continuous wave four- level, two-photon holography |
10/18/1983 | US4410978 Cured di- or triacrylate layer |
10/18/1983 | US4410969 Optical information playback apparatus |
10/18/1983 | US4410968 Method and apparatus for recording on a disk supported deformable metallic film |
10/18/1983 | US4410277 Apparatus for detecting magneto-optical anisotropy |
10/18/1983 | US4410241 Device for processing optical information and method of manufacturing a coma correction plate used in such a device |
10/18/1983 | CA1155548A1 Optical recording medium and method for its formation |
10/18/1983 | CA1155547A1 Optical recording device having several ablative recording layers |
10/18/1983 | CA1155546A1 Dielectric recording medium |
10/18/1983 | CA1155545A1 Apparatus for controlling the motion of a moving tape |
10/11/1983 | US4409470 Narrow-bodied, single-and twin-windowed portable laser scanning head for reading bar code symbols |
10/11/1983 | US4409169 Method for manufacturing disk-shaped information carriers |
10/11/1983 | CA1155220A1 Optical information record member |
10/11/1983 | CA1155219A1 Apparatus and method for controlling focus in a recording system |
10/11/1983 | CA1155218A1 Semiconductor laser source optical reading head and device for reading by reflection an information carrier incorporating such a head |
10/11/1983 | CA1154963A1 USE OF.alpha.,.alpha.'-BIS(DIALKYLAMINOBENZYLIDENE) KETONE DYES IN OPTICAL RECORDING ELEMENTS |
10/05/1983 | EP0090695A1 Optical disc protected from humidity |
10/05/1983 | EP0090690A1 Method and device for regenerating the phases of synchronizing signals in an optical recording-reproducing apparatus for record carriers |
10/05/1983 | EP0090683A1 Optical head in a write-read device for an information carrier |
10/05/1983 | EP0090604A1 Data recorder system |
10/05/1983 | EP0090461A2 Magazine and disc holders for supporting discs in the magazine |
10/05/1983 | EP0090420A1 Device for optically recording and reading of information |
10/05/1983 | EP0090379A2 Data track searching device |
10/05/1983 | EP0090145A2 Process and device for storing optical information |
10/04/1983 | US4408319 Optical information recording mother disc and method of producing the same |
10/04/1983 | US4408314 Record/playback track tracking servo |
10/04/1983 | US4408313 Objective lens driving device for tracking and focus corrections |
10/04/1983 | US4408311 Optical tracking apparatus |
10/04/1983 | US4408301 Picture information filing system |
10/04/1983 | US4408213 Multilayer-spacer layer decomposes at lower temperature than substrate or reforcement layer |
10/04/1983 | US4407880 Substrate of member for recording information with light and method of manufacturing the same |
10/04/1983 | US4407646 Apparatus for making video discs |
10/04/1983 | CA1154865A1 Video track transfer system and method |
09/28/1983 | EP0089874A1 Covered optical disc with a flexible sealing component |
09/28/1983 | EP0089775A1 Method for manufacturing optical type recording medium |
09/28/1983 | EP0089736A2 Information track centering system |
09/28/1983 | EP0089734A2 Disk-shaped record carrier |
09/28/1983 | EP0089549A1 Optical disk apparatus |
09/27/1983 | US4406520 Beam splitter optical system of signal pickup device |
09/27/1983 | CA1154535A1 Video disc system |
09/27/1983 | CA1154534A1 Replicable optical recording medium |
09/27/1983 | CA1154533A1 Replicable optical recording medium |
09/27/1983 | CA1154523A1 Control loop |
09/21/1983 | EP0089274A1 Optical information carrier, optical device for generating tracking signals and optical device for generating error signals for focussing |
09/21/1983 | EP0089264A1 Method and device for generating synchronizing signals in an optical recording-reproducing apparatus for record carriers |
09/21/1983 | EP0089263A1 Pre-engraved movable record carrier and tracking device therefor |
09/21/1983 | EP0089244A2 Light beam position control apparatus |
09/21/1983 | EP0089168A1 Optical type information recording medium |
09/21/1983 | EP0089119A1 Optical memory system having an improved short seek capability |
09/21/1983 | EP0089045A2 Data recording and reproducing apparatus |
09/21/1983 | EP0089021A2 Overlay recording prevention device for optical disc apparatus |
09/21/1983 | EP0089020A2 Data processing apparatus with means for recording data by moving a head to a plurality of tracks |
09/20/1983 | US4406000 Tracking system for optical record medium |
09/20/1983 | US4405994 Metal layer with organic cover on substrate; impact of beam causes expansion |
09/20/1983 | US4405993 Liquid crystal disc memory system |
09/20/1983 | US4405862 Radiation beam etching |
09/20/1983 | US4405706 Optical information recording medium |
09/20/1983 | US4405671 Optical information recording disk |
09/20/1983 | US4405541 Video disc processing |
09/20/1983 | CA1154163A1 Tracking servo apparatus for an optical information reproducing system |
09/20/1983 | CA1154162A1 Optical memory having a parallel read out |
09/14/1983 | EP0088671A1 Optical head in a write-read device for an information carrier |
09/14/1983 | EP0088662A1 Optical unit associated with an optical head for reading/writing an optical disc |
09/14/1983 | EP0088538A1 Optical memory system having an improved track following |
09/14/1983 | EP0088537A1 Optical memory system having an improved long seek capability |
09/14/1983 | EP0088536A1 Optical memory system having improved track following and seeking capabilities |
09/14/1983 | EP0088441A1 Vertical focus servo system for an optical disc player |
09/14/1983 | EP0088436A2 Apparatus for verifying code signals in the vertical blanking interval |
09/13/1983 | US4404656 Thermo-optical data writing process and data medium for performing this process |
09/13/1983 | US4404599 Laser recording information and pilot signals for tracking on a grooveless recording |
09/07/1983 | EP0088010A1 Device with an optical writing/reading head for an optical disc |
09/07/1983 | EP0087973A1 Tracking servo system for optical-disc information reproducing apparatus |
09/07/1983 | EP0087795A2 Mapping disc defect detector |
09/07/1983 | EP0087718A1 Tracking servo control unit for an information reproducing apparatus |
09/07/1983 | EP0087460A1 Optical information storage |
09/06/1983 | US4403318 Apparatus and method for recording, reproducing and erasing on optical recording discs |
09/06/1983 | US4403316 Swing-arm device for an optical scanning unit |
09/06/1983 | US4403259 Apparatus for reading information from an information recording disc |
09/06/1983 | US4403231 Disk shaped substrate, radiation sensitive layer, oxide layer, and protective coating |
09/06/1983 | CA1153468A1 Mastering machine |
09/01/1983 | WO1983003027A1 Optical memory having a short seek capability |
09/01/1983 | WO1983003026A1 Optical memory system having a long seek capability |
09/01/1983 | WO1983003025A1 Optical memory system having track following |
09/01/1983 | WO1983003024A1 Optically memory system having track following and seeking capabilities |
08/31/1983 | EP0087174A1 Control system for an optical data recording apparatus |
08/31/1983 | EP0087154A2 Method and apparatus for the universal recording and playback of encoded digital video data |
08/30/1983 | US4402061 Preformatted optical media for use in an optical memory system |
08/30/1983 | CA1152970A1 Preparation of colloidal iron dispersions by the polymer-catalyzed decomposition of iron carbonyl and iron organocarbonyl compounds |
08/30/1983 | CA1152941A1 Process for making discs |
08/30/1983 | CA1152787A1 Method for manufacturing in-line hologram lens |
08/23/1983 | US4400707 Recording medium |
08/23/1983 | CA1152645A1 Optical reproducing head |
08/23/1983 | CA1152644A1 Record carrier containing information in an optically readable radiation reflecting information structure |
08/23/1983 | CA1152643A1 Record carrier containing information in an optically readable information structure |
08/23/1983 | CA1152642A1 Apparatus for reading a disc-shaped record carrier |