| 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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| 02/07/1991 | WO1991001549A1 Scanning device |
| 02/06/1991 | EP0411961A2 Optical disk recording/reproducing device |
| 02/06/1991 | EP0411885A1 Novel photochromic spiropyran compounds |
| 02/06/1991 | EP0411884A1 Novel photochromic spiropyran compounds |
| 02/06/1991 | EP0411525A2 A method of making optical disk master and an optical disk |
| 02/06/1991 | EP0411120A1 Laser reproduction apparatus |
| 02/06/1991 | EP0293494B1 Memorizing device with moving information carriers |
| 02/06/1991 | EP0114839B1 A high performance multi-processor system |
| 02/05/1991 | US4991163 Optical information medium with sample mark area and multiple transcription prevention |
| 02/05/1991 | US4991162 Testing apparatus and method for optical data storage medium |
| 02/05/1991 | US4991161 Apparatus for supporting objective lens movably in two orthogonal directions |
| 02/05/1991 | US4991160 Integrated optical device for magneto-optical recording and reading head |
| 02/05/1991 | US4991159 Time display device for an apparatus for playing information recorded on an optical disk |
| 02/05/1991 | US4991158 Optical information recording and reproducing apparatus |
| 02/05/1991 | US4991157 Optical information storage apparatus |
| 02/05/1991 | US4990433 Metal-containing indoaniline compound and optical recording medium employing the compound |
| 02/05/1991 | US4990388 Multilayer; light transmissive substrate, light absortive and light reflective layers |
| 02/05/1991 | US4990387 Sensitivity, oxidation resistance, stability |
| 02/05/1991 | US4990386 Terpolymer of aromatic vinyl monomer, cyclohexylmaleimide, and acrylic compound |
| 02/05/1991 | US4990208 Multilayer; adhesive applied in ring pattern |
| 01/31/1991 | DE3924190A1 Abtastvorrichtung Scanning |
| 01/30/1991 | EP0410879A2 Recordable CD-formatted optical disk |
| 01/30/1991 | EP0410715A2 Leaf spring mechanism and method of manufacturing the same |
| 01/30/1991 | EP0410704A2 Optical recording apparatus |
| 01/30/1991 | EP0410639A2 Optical recording and/or reproducing apparatus |
| 01/30/1991 | EP0410626A2 Moving-image recording/reproducing apparatus |
| 01/30/1991 | EP0410605A2 Process for producing a polymer by ring-opening polymerization |
| 01/30/1991 | EP0410518A2 Coil arrangement for an optical head, and an optical head with such a coil arrangement |
| 01/30/1991 | EP0410468A2 Substrate of optical disc |
| 01/30/1991 | EP0410205A2 Anisotropic liquid crystal polymeric films |
| 01/30/1991 | EP0410183A2 Optical information recording medium and recording method |
| 01/30/1991 | EP0409987A1 Fabrication method of mask for rom type optical recording card and inspection method of mask |
| 01/30/1991 | EP0199824B1 Resin material used for an optical device |
| 01/30/1991 | EP0193614B1 Disk-shaped record carrier |
| 01/30/1991 | CN1048945A Method of and device for providing a record carrier with information patterns |
| 01/30/1991 | CN1048944A Magnetooptical recording media |
| 01/30/1991 | CN1048943A 扫描装置 Scanning device |
| 01/30/1991 | CN1011446B Optical-mechanical storage device |
| 01/29/1991 | US4989198 Beam control device utilizing beam having a specific direction of polarization to control a laser used in an optical memory system |
| 01/29/1991 | US4989196 Optical information recording apparatus |
| 01/29/1991 | US4989195 Disk recording/reproducing system using disk identification signal to retrieve stored control parameters |
| 01/29/1991 | US4989194 Optical information processing method of driving auto-focusing and/or auto-tracking means in accordance with a stored servo signal when irradiation of a record medium with light beam is stopped, and apparatus therefor |
| 01/29/1991 | US4989193 Optical arrangement and a reading apparatus |
| 01/29/1991 | US4989190 Apparatus for seeking a track of an optical disk in which information is recorded |
| 01/29/1991 | US4988933 Data storage |
| 01/29/1991 | US4988932 Constant velocity servosystem wtih high positional accuracy |
| 01/29/1991 | US4988194 Optical storage inspection unit calibration disk |
| 01/29/1991 | US4988165 Object lens driving device |
| 01/29/1991 | US4988153 Holographic memory read by a laser array |
| 01/29/1991 | US4988151 Method for making edge faded holograms |
| 01/29/1991 | CA2022027A1 Substrate of optical disc |
| 01/29/1991 | CA2021024A1 Process for producing polymer by ring-opening polymerization |
| 01/24/1991 | DE3923331A1 Optical disc scanning arrangement - uses main scanning beam and two tracking beams displaced by half track width |
| 01/24/1991 | DE3923328A1 Magneto-optisches aufnahme- und/oder wiedergabegeraet A magneto-optical recording and / or wiedergabegeraet |
| 01/23/1991 | EP0409816A2 Optical system for aiming apparatus using a laser diode |
| 01/23/1991 | EP0409663A2 Optical disc, preparation thereof and reading method |
| 01/23/1991 | EP0409649A2 Information recording and reproducing device |
| 01/23/1991 | EP0409574A2 Optical information recording and reproducing apparatus |
| 01/23/1991 | EP0409516A2 Apparatus for deriving synchronizing signal from pre-formed marks on record carrier |
| 01/23/1991 | EP0409469A2 Optical recording and/or reproducing apparatus |
| 01/23/1991 | EP0409468A2 Flying optical head |
| 01/23/1991 | EP0408763A1 Optical disk and method of manufacturing the same |
| 01/23/1991 | CN1048764A Optical schanning-device |
| 01/23/1991 | CN1048762A Magneto-optical recording and/or reproducing-set |
| 01/22/1991 | US4987566 Optical head apparatus |
| 01/22/1991 | US4987565 Apparatus for driving objective lens |
| 01/22/1991 | US4987461 High position resolution sensor with rectifying contacts |
| 01/22/1991 | US4987292 Method and apparatus for detecting focus and tracking errors |
| 01/22/1991 | US4987262 Absorbers of near infrared radiation, chromogens |
| 01/22/1991 | US4987023 Langmuir blodgett film |
| 01/22/1991 | US4987021 Indole derivative cyanine dye |
| 01/22/1991 | US4986938 Compression of injection molded polycarbonate before solidification of interior |
| 01/22/1991 | US4986668 Information recording and reproducing apparatus with management of defective sector |
| 01/22/1991 | US4986212 Metallizing apparatus |
| 01/16/1991 | EP0408392A2 Optical disk recording and reproducing apparatus |
| 01/16/1991 | EP0408310A2 Transducer positioning servo mechanism |
| 01/16/1991 | EP0408283A2 Apparatus for producing substrate sheet for optical recording mediums and process for producing substrate sheet for optical recording mediums making use of it, apparatus for producing optical recording medium and process for producing optical recording medium making use of it. |
| 01/16/1991 | EP0408271A2 Optical memory medium |
| 01/16/1991 | EP0408191A1 Substituted phthalocyanines |
| 01/16/1991 | EP0408014A1 Squarylium compounds and optical information recording medium using the same |
| 01/16/1991 | EP0407931A2 Laser recording medium |
| 01/16/1991 | EP0407573A1 Disc recording apparatus |
| 01/16/1991 | EP0407508A1 Single laser direct read after write system (draw) |
| 01/16/1991 | EP0407469A1 Process and device for non-intrusively, continuously and automatically taking, storing and supplying analysis samples and data for future evaluation. |
| 01/16/1991 | CN1048632A Semiconductor device comprising radiation sensitive element |
| 01/16/1991 | CN1048619A Direct effect master/stamper for optical recording |
| 01/15/1991 | US4985882 Track access control system for disk system, having eccentricity correction means |
| 01/15/1991 | US4985881 Record carrier for a magneto-optical disc memory having guide grooves of a plurality of tracks disposed with a predetermined relation to light spot diameter |
| 01/15/1991 | US4985616 Optical card having optical grooves for access and wobbled marks for tracking and a recording-reproducing apparatus therefor |
| 01/15/1991 | US4985349 Recording layer of tellurium, germanium, carbon, hydrogen |
| 01/15/1991 | US4985289 Melting and diffusion system |
| 01/15/1991 | US4985226 Diamonds, zero-phonone line |
| 01/10/1991 | WO1991000597A1 Module of optical memory |
| 01/10/1991 | WO1991000596A1 Optical disk device |
| 01/10/1991 | WO1991000595A1 Device for recording information on an optical record carrier |
| 01/10/1991 | WO1991000585A1 Device for displaying changing information |
| 01/09/1991 | EP0407215A2 Optical recording and reproducing apparatus |
| 01/09/1991 | EP0407191A2 Magneto-optical recording medium and apparatus |
| 01/09/1991 | EP0407171A2 Detector for moving velocity of light beam spot |
| 01/09/1991 | EP0406852A2 Automatic gain control method and appartus in optical disk system |