| 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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| 08/11/1992 | US5137798 Solution coating phthalocyanine compound to the substrate absorbs optical signals of modulated electromagnetic radiation applied, thus causes deformation of the film |
| 08/11/1992 | US5137661 Process for producing optical recording medium |
| 08/11/1992 | US5137617 Optical disk manufacture |
| 08/06/1992 | WO1992013252A1 A method and device for touch-free determination of the translatory or angular position of a body |
| 08/06/1992 | DE4102857A1 Beam focussing control method for CD player - varying offset compensation voltage fed to focussing control circuit until bit error rate of scanned data signal reaches minimum |
| 08/06/1992 | DE4102832A1 Reducing access time in CD player etc. - raising disc speed between start of track transfer and time of reaching target location on target track |
| 08/06/1992 | DE4102825A1 Shortening access time of CD player - not reducing speed of disc until scanning head has reached target position on target track |
| 08/06/1992 | DE4102801A1 Spurregelkreis Tracking control loop |
| 08/06/1992 | DE4102800A1 Phase-locked loop with drift compensation for CD player, etc. - varies equalisation voltage of PLL until bit error rate is minimised during playing of disc |
| 08/05/1992 | EP0497550A1 Actuator position detector, actuator position controller and track search controller |
| 08/05/1992 | EP0497549A2 Light spot position detector |
| 08/05/1992 | EP0497548A1 Apparatus for detecting position of light spot |
| 08/05/1992 | EP0497387A2 Carriage servo unit in a disc player |
| 08/05/1992 | EP0497321A2 Symmetry apparatus for an EFM signal |
| 08/05/1992 | EP0497291A2 Optical disk memory apparatus |
| 08/05/1992 | EP0497252A2 Disc and disc player for displaying picture information |
| 08/05/1992 | EP0497211A2 Recording/reproducing system using phase encoding of optical storage medium |
| 08/04/1992 | US5136574 Optical card and a recording/reproduction apparatus for the same |
| 08/04/1992 | US5136573 Information recording apparatus and method |
| 08/04/1992 | US5136572 Optical data storage using temperature stabilizer lasers |
| 08/04/1992 | US5136569 Optical disk recorder for diverse media types and having a predetermined initialization or start-up procedure |
| 08/04/1992 | US5136568 Tracking circuit for guiding a beam of light along data tracks of a recorded medium |
| 08/04/1992 | US5136567 Photo-detecting device |
| 08/04/1992 | US5136566 Focus actuator driving apparatus |
| 08/04/1992 | US5136565 Optical device for reading and writing data on a recording medium |
| 08/04/1992 | US5136564 Pit pattern detecting apparatus and method |
| 08/04/1992 | US5136560 CAV/CLV composite disk accessing method utilizing different accessing procedures for respective CAV and CLV areas |
| 08/04/1992 | US5136559 Optical information recording and reproducing apparatus using tracking mirror |
| 08/04/1992 | US5136558 Two axis electromagnetic actuator |
| 08/04/1992 | US5136446 Apparatus for movably supporting and positioning a transducer |
| 08/04/1992 | US5136424 Binary optical element for an optical disk read/write head |
| 08/04/1992 | US5136152 Hybrid optical pickup with integrated power emission and reading photodetectors |
| 08/04/1992 | US5136054 Sulfone-containing azamethine compounds |
| 08/04/1992 | US5135791 Optical device |
| 08/04/1992 | US5135696 Process for forming fibers of sulfonated polyaniline compositions and uses thereof |
| 08/04/1992 | US5135635 Sputtering apparatus |
| 08/04/1992 | US5135376 Optical-disk manufacturing device |
| 08/04/1992 | CA1306057C Liquid crystal optical read/write storage medium and system using same |
| 07/31/1992 | CA2059816A1 Optical disk memory apparatus |
| 07/29/1992 | EP0496495A2 Data recording device |
| 07/29/1992 | EP0496358A1 Making method for high-density optical disk |
| 07/29/1992 | EP0496132A2 Method of and apparatus for optically writing, reading and erasing a multi-plane record carrier, and record carrier suitable for said method and apparatus |
| 07/29/1992 | CN1063166A Recording medium, recording and reproduction device and recording method |
| 07/28/1992 | US5134607 Optical memory system for generating a timing control signal for detecting a recorded region through a playback signal |
| 07/28/1992 | US5134606 Method and optical recording/reproducing apparatus for optimizing laser beam power |
| 07/28/1992 | US5134604 Combination optical data medium with multiple data surfaces and cassette therefor |
| 07/28/1992 | US5134602 Calibrating optical disk recorders to some parameters during disk spin up while deferring calibration of other parameters |
| 07/28/1992 | US5134601 Optical disk sector servo patterns |
| 07/28/1992 | US5134599 Equipment for playing back data |
| 07/28/1992 | US5134527 Suspension mechanism for an objective lens of an optical head |
| 07/28/1992 | US5134426 Optical device for generating pattern having uniform light intensity distribution |
| 07/28/1992 | US5133824 Method and device for removing a flexible product from a carrier plate |
| 07/28/1992 | CA1305792C Optical disk drive device and information storage device |
| 07/23/1992 | WO1992012514A1 A method and apparatus for recording and reading an image |
| 07/22/1992 | EP0536112A4 Erasable optical wallet-size data card. |
| 07/22/1992 | EP0495597A1 Method of and apparatus for holding an optical disk drive head stationary |
| 07/22/1992 | EP0495576A2 laser driver for an optical disk drive |
| 07/22/1992 | EP0495530A2 Method for recovering information from a selected track on a record disc |
| 07/22/1992 | EP0495281A2 Method and apparatus for recording on optical discs |
| 07/22/1992 | EP0495185A2 Recording/reproducing method for optical recording medium |
| 07/22/1992 | EP0494905A1 Counter. |
| 07/22/1992 | EP0494892A1 Detector circuit. |
| 07/22/1992 | EP0494879A1 Coil arrangement for a focussing or track control circuit. |
| 07/22/1992 | EP0444145B1 Circuit arrangement for identifying the type of an optical record carrier |
| 07/22/1992 | EP0288580B1 Method of manufacturing a flexible optical information recording medium |
| 07/22/1992 | EP0248536B1 Methods of and apparatus for seeking a target address on a record medium |
| 07/22/1992 | CN1017571B Device for scanning record carrier and control circuit for use in such device |
| 07/21/1992 | US5132960 Information recording medium with concentric spacers and cut-away adhesive |
| 07/21/1992 | US5132959 Optical head in use with an optical recording/reproducing apparatus |
| 07/21/1992 | US5132957 Information signal recording and reproducing system capable of recording an information signal on a medium having a limited recording band width |
| 07/21/1992 | US5132956 Optical recording/reproducing apparatus in which defective sectors are altered |
| 07/21/1992 | US5132954 Controls for optical disk relating to accessing and utilization of such disk |
| 07/21/1992 | US5132953 Multi-beam optical recording/reproducing apparatus for recording/reproducing on a medium having a recording flat part with a guide groove on each side |
| 07/21/1992 | US5132952 System for reproducing pulse time modulated wave forms stored along a diffractive track |
| 07/21/1992 | US5132950 Optical head having a prism for splitting a beam of light into two polarized light beams |
| 07/21/1992 | US5132948 Phase comparing apparatus and focus error detecting apparatus |
| 07/21/1992 | US5132944 Half-height magneto-optic disk drive |
| 07/21/1992 | US5132850 Lens actuator |
| 07/21/1992 | US5132843 Grating lens and focusing grating coupler |
| 07/21/1992 | US5132534 Optical pickup with position adjusting means |
| 07/21/1992 | US5132525 Portable laser diode scanning head with aiming beam |
| 07/21/1992 | US5132522 Information-reading method |
| 07/21/1992 | US5132154 Polycarbonate mixtures in optical applications |
| 07/21/1992 | US5132153 Organic dye, polysiloxane layer |
| 07/21/1992 | US5132152 Optical recording medium and method for manufacturing the same |
| 07/21/1992 | US5131744 Mirror rotation angle detection mechanism |
| 07/15/1992 | EP0494767A2 Optical pick-up devices for recordable discs |
| 07/15/1992 | EP0494479A1 Glass based optical disk and manufacturing process |
| 07/15/1992 | EP0494267A1 Digital optical sound system. |
| 07/15/1992 | EP0494255A1 Power-modulated laser devices |
| 07/15/1992 | EP0232427B1 Optical recording medium |
| 07/14/1992 | US5130972 Optical recording and reproducing apparatus |
| 07/14/1992 | US5130971 Recording and erasing on compact disk, alloy of germanium, antimony and tellurium, reflecting film |
| 07/14/1992 | US5130970 Optical recording apparatus and optical disk |
| 07/14/1992 | US5130968 Apparatus for monitoring a reading position for use in a disc player |
| 07/14/1992 | US5130967 On/off-track detecting apparatus for compatible disk player |
| 07/14/1992 | US5130965 Optical recording/reproducing apparatus using a light spot switching means for centering beams on an information track |
| 07/14/1992 | US5130964 Track seeking control apparatus for use in data recording/reproduction systems having data tracks thereon |
| 07/14/1992 | US5130963 Optical disk player |
| 07/14/1992 | US5130857 Two diffraction gratings, coating a thin film |