| 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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| 07/18/1990 | EP0378182A2 Servo control circuit for optical disk apparatus |
| 07/18/1990 | EP0377864A2 Optical storage device |
| 07/18/1990 | EP0243503B1 Data recording/regenerating device |
| 07/18/1990 | EP0223804B1 Process for track jumping in track search processes and circuit arrangement for implementation of the process |
| 07/18/1990 | CN1008846B Polymere substrate for making lasser disc records and easser disc records thereby |
| 07/18/1990 | CN1008845B Optical information memory medium and methods and apparatus for recording and erasing information |
| 07/17/1990 | US4942567 Disk reproducing method |
| 07/17/1990 | US4942566 Device for illuminating an auxiliary track of a motion picture film |
| 07/17/1990 | US4942565 Apparatus for recording a wobbling, spiral guide groove on an optical disc |
| 07/17/1990 | US4942564 Servo system gain compensation method for magneto-optic disk drives |
| 07/17/1990 | US4942563 Signal processing apparatus and method capable of providing precise digital data |
| 07/17/1990 | US4942562 Pickup actuator for disk-type media |
| 07/17/1990 | US4942551 Method and apparatus for storing MIDI information in subcode packs |
| 07/17/1990 | US4942486 Recording disk having read-only recording area and writable recording area and a driving apparatus therefor |
| 07/17/1990 | US4942141 Infrared absorbing squarylium dyes for dye-donor element used in laser-induced thermal dye transfer |
| 07/17/1990 | US4942073 Optical data storage medium |
| 07/12/1990 | WO1990007436A1 Cover for mirrors of sun visors of motor vehicles |
| 07/11/1990 | EP0377340A2 Recording/reproducing device |
| 07/11/1990 | EP0377034A1 Magnetoelectric mechanism for moving an optical bead |
| 07/11/1990 | EP0376958A1 Updatable micrographic pocket data card |
| 07/11/1990 | CN1043814A Optical scanning device, mirror objective suitable for use in said device and optical write and/or read apparatus provided with said device |
| 07/11/1990 | CN1043794A Optical scanning device, mirror objective suitable for use in said device and optical write and/or read apparatus proved with said device |
| 07/10/1990 | US4941139 Checking media operations and recording during optical recording |
| 07/10/1990 | US4941138 Method and an apparatus for measuring optical characteristics of an optical disk |
| 07/10/1990 | US4940890 Optical scanning device, mirror objective suitable for use in said device and optical write and/or read apparatus provided with said device |
| 07/10/1990 | US4940618 Light transmitting substrate with deformable surface, epoxy resin, polycarbonate, acrylate |
| 07/04/1990 | EP0376756A2 Recording/reproducing device |
| 07/04/1990 | EP0376745A2 Optical recording medium and process for the production thereof |
| 07/04/1990 | EP0376708A2 Light detecting apparatus |
| 07/04/1990 | EP0376700A2 Information recording medium |
| 07/04/1990 | EP0376699A1 Transducer drive apparatus |
| 07/04/1990 | EP0376678A2 Information recording medium |
| 07/04/1990 | EP0376673A2 Optical recording element and optical data retrieval system for use with the same |
| 07/04/1990 | EP0376626A2 Optical information recording medium with a separating part between information tracks |
| 07/04/1990 | EP0376531A1 Objective lens driving devices |
| 07/04/1990 | EP0376354A2 Method for the recording and reproduction of an analog and a digital optical soundtrack |
| 07/04/1990 | EP0376327A2 Optical recording medium |
| 07/04/1990 | EP0376231A2 Optical recording media |
| 07/04/1990 | CN1008669B Storage device with movable information carrier |
| 07/03/1990 | US4939717 Method and apparatus for erasing and recording information using three power levels |
| 07/03/1990 | US4939716 Optical information carrier |
| 07/03/1990 | US4939715 Tape scanning apparatus |
| 07/03/1990 | US4939713 Erasable optical disk and optical information recording/reproduction apparatus |
| 07/03/1990 | US4939712 Multiple track and reversing address search method for use in a disk player system |
| 07/03/1990 | US4939230 Chain termination after polymerization completion compact disks |
| 07/03/1990 | US4939013 Quaternary system of tellurium, geranium, tin, and gold, oxygen-free; disks |
| 07/03/1990 | US4939012 Semiconductor laser sensitive |
| 07/03/1990 | US4939011 Silicone pressure sensitive adhesive bonds substrates with reflective and recording sides |
| 07/03/1990 | CA1271258A1 Device for determining a centring error of a round track-shaped information structure in an optical record carrier relative to the axis of rotation of a turntable supporting the record carrier, apparatus provided with such a device, and record carrier... |
| 06/28/1990 | WO1990007181A1 Erasable phase change optical recording elements and methods |
| 06/28/1990 | WO1990007180A1 Optical disc recording/reproducing apparatus |
| 06/28/1990 | DE3942163A1 Erasable optical information storage material - with recording layer of indum- and antimony- contg. alloy |
| 06/28/1990 | DE3941165A1 Steuersystem fuer den aufnehmer einer platten-wiedergabeeinrichtung Control system for the transducer a plate-reproducing device |
| 06/27/1990 | EP0375358A2 Helical scan tape record apparatus and method |
| 06/27/1990 | EP0375356A2 Laser diode unit |
| 06/27/1990 | EP0375342A2 Data recording/reproducing apparatus using a recording disk |
| 06/27/1990 | EP0375298A2 Optical information recording media |
| 06/27/1990 | EP0375266A2 Optical disc recording and/or reproduction apparatus |
| 06/27/1990 | EP0374841A1 Optical head device for optimally detecting a focussing error |
| 06/27/1990 | EP0374256A1 Optical recording medium and method of manufacturing same |
| 06/27/1990 | EP0197159B1 Optical disc player |
| 06/26/1990 | US4937810 Optical recording tape with continuous prerecorded tracks |
| 06/26/1990 | US4937809 Optical information recording apparatus |
| 06/26/1990 | US4937808 Intergrated optical head with flexible substrate portion |
| 06/26/1990 | US4937805 Information recording medium and method of inhibiting reproduction of blank areas |
| 06/26/1990 | US4937804 Apparatus for recording data into optical recording medium |
| 06/26/1990 | US4937799 Method and apparatus for setting light quantity most suitable for reproducing information from an optical recording medium |
| 06/26/1990 | US4937684 Information recording-reproducing apparatus |
| 06/26/1990 | US4937510 Control apparatus for a linear motor for driving a pickup |
| 06/26/1990 | US4937440 System and method for beam farfield shift focus compensation |
| 06/26/1990 | US4937338 Reaction product of cationic dye and heteropolyacid; optical recording media |
| 06/26/1990 | US4937171 Photosensitive recording material |
| 06/26/1990 | US4937120 Optical recording medium and process for producing the same |
| 06/26/1990 | US4937119 Textured organic optical data storage media and methods of preparation |
| 06/26/1990 | US4937118 Adhesive for optical disks |
| 06/26/1990 | CA1270950A1 Optical disc structure having an air sandwich structure |
| 06/26/1990 | CA1270949A1 Method for the optical recording of information and an optical recording element used in the method |
| 06/26/1990 | CA1270679A1 Decoding apparatus |
| 06/26/1990 | CA1270640A1 Recording elements comprising write-once thin film alloy layers |
| 06/22/1990 | CA2005672A1 Helical scan tape record apparatus and method |
| 06/21/1990 | DE3842227A1 Process for the production of duplication pieces of a master disc |
| 06/20/1990 | EP0373955A1 Optical recording medium |
| 06/20/1990 | EP0373939A1 Textured organic optical data storage media and methods of preparation |
| 06/20/1990 | EP0373763A2 Compact disc playback enhancer |
| 06/20/1990 | EP0373700A1 Optical scanning device, and mirror objective suitable for use in said device. |
| 06/20/1990 | EP0373699A1 Optical scanning device, mirror objective suitable for use in said device and optical write and/or read apparatus provided with said device |
| 06/20/1990 | EP0373643A2 Near infrared absorbers and display/recording materials prepared by using same |
| 06/20/1990 | EP0373607A2 Focusing error detection circuit |
| 06/20/1990 | EP0373539A2 Optical recording medium |
| 06/20/1990 | CN1043217A Apparatus for optically scanning an information plane |
| 06/20/1990 | CN1008487B Optical reader for printed bit-encoded data and method of reading same |
| 06/19/1990 | US4935917 Memory disk having some capacity recording areas on a spiral track |
| 06/19/1990 | US4935916 Apparatus for recording and reproducing information including energy storing means |
| 06/19/1990 | US4935915 Beam controller for magneto-optical disc memory system |
| 06/19/1990 | US4935914 Optical recording and reproducing apparatus for verifying correct writing of information signal |
| 06/19/1990 | US4935913 Optical information recording and reproducing apparatus |
| 06/19/1990 | US4935912 Circuit for digitally generating a tracking error signal to avoid offset monitoring |
| 06/19/1990 | US4935811 Surface defect inspection apparatus with microscope |
| 06/19/1990 | US4935336 Photosensitive layer of tellurium, germanium, tin and oxygen having a variable optical density |
| 06/19/1990 | CA2004708A1 Erasable phase change optical recording elements and methods |