| 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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| 09/23/1992 | CN1018396B Information recording media |
| 09/23/1992 | CN1018395B Optical recording medium |
| 09/22/1992 | US5150437 Electro-optical scanner |
| 09/22/1992 | US5150351 Optical information recording apparatus for recording an input signal having variable width pulse duration and pulse spacing periods |
| 09/22/1992 | US5150350 Magneto-optical data recording and reproducing device |
| 09/22/1992 | US5150348 Tracking servo utilizing beam splitter |
| 09/22/1992 | US5150347 Beam track position control apparatus for optical disk apparatus |
| 09/22/1992 | US5150346 Automatic tracking servo gain control apparatus |
| 09/22/1992 | US5150345 Optical information recording apparatus provided with means for sampling and holding a servo signal when the intensity of a light beam varies between intensity levels |
| 09/22/1992 | US5150344 Tracking servo system |
| 09/22/1992 | US5150343 Miniaturized low-power-consumption optical head provided with a state transformation mechanism |
| 09/22/1992 | US5150342 Photo-detecting device |
| 09/22/1992 | US5150339 Optical disk medium and its application method and system |
| 09/22/1992 | US5150113 Method and apparatus for transmitting an information signal together with data packets of related and unrelated textual information and receiving apparatus therefor |
| 09/22/1992 | US5149819 Squarylium compounds and optical information recording medium using the same |
| 09/22/1992 | US5149607 Matrix |
| 09/22/1992 | US5149374 Device for forming LB film |
| 09/22/1992 | CA1307845C Optical disc system |
| 09/22/1992 | CA1307844C Wavelength selective optical data storage system |
| 09/16/1992 | EP0503961A2 Method of fabricating glass substrate for disk |
| 09/16/1992 | EP0503929A2 Laser with temperature controlled harmonic generating crystal |
| 09/16/1992 | EP0503774A2 Optical recording medium |
| 09/16/1992 | EP0503679A2 Optical card reader |
| 09/16/1992 | EP0503428A1 Optical recording medium and method for using the same |
| 09/16/1992 | EP0503097A1 Optical sheet material |
| 09/16/1992 | EP0503096A1 Beam position control system of optical disk device |
| 09/16/1992 | EP0503095A1 Magneto-optical disk drive seek control system |
| 09/16/1992 | CN1018303B Optical recording media and information recording and reproducing units |
| 09/16/1992 | CN1018302B Apparatus for optically scanning radiation reflecting information plane |
| 09/15/1992 | US5148425 Overshoot minimizing tracking servo apparatus |
| 09/15/1992 | US5148424 Detrack detecting system in an optical recording/reproducing apparatus |
| 09/15/1992 | US5148423 Method of and circuitry for compensating offset voltages in a focusing and/or tracking circuit |
| 09/15/1992 | US5148422 Optical recording medium having a data recording track with offset data storing regions |
| 09/15/1992 | US5148421 Optical head |
| 09/15/1992 | US5148420 Recording information apparatus having a head speed detector |
| 09/15/1992 | US5148417 Tracking jump compensator for optical disc reproducing apparatus |
| 09/15/1992 | US5148416 Signal processing circuit for magnetooptical record/reproducing apparatus |
| 09/15/1992 | US5148335 Multilevel optical recording arrangement |
| 09/15/1992 | US5148010 Automatic focusing apparatus and method includes a photorefractive crystal having a lens effect |
| 09/15/1992 | US5147763 Forming a photoresist layer on a roller, affixing a flexible exposure mask to roller, exposing to light and developing photoresist to form an uneven pattern |
| 09/15/1992 | US5147701 Optical disk, nonreacting layers, protective layer is a metal chalcogenide and and oxide, nitride, or carbide |
| 09/15/1992 | US5147700 Mixture of PVC and graft terpolymer, optical disks |
| 09/15/1992 | US5147490 Process for the production of a heat-mode recording material |
| 09/15/1992 | CA1307582C Video disc reproducing apparatus |
| 09/15/1992 | CA1307376C Magneto-optic substrates and recording method and machine for moldingsuch substrates |
| 09/09/1992 | EP0502713A2 Track cross signal generation circuit of optical disk device for correctly outputting track cross signal and correctly and stably carrying out seek operation even within high speed region of beam |
| 09/09/1992 | EP0502582A1 Information reading system and record carrier and reading device for use in such a system |
| 09/09/1992 | EP0502533A1 Apparatus for developing photoresist |
| 09/09/1992 | EP0502506A1 A photochromic material and an optical storage medium using the same |
| 09/09/1992 | EP0502243A2 Electronic offset compensation of the continuous composite track error signal in optical recording |
| 09/09/1992 | EP0502170A1 A method for overwriting information on optical disk medium. |
| 09/09/1992 | CN1018212B Optical recording media and process preparing same |
| 09/08/1992 | US5146464 Semiconductor laser driver circuit |
| 09/08/1992 | US5146449 Optical disc apparatus |
| 09/08/1992 | US5146445 Optical head with tracking error detecting system |
| 09/08/1992 | US5146444 Servo control loop |
| 09/08/1992 | US5146443 Servo apparatus for optical disk player having both open loop coarse gain control and closed loop fine gain control |
| 09/08/1992 | US5146442 Method and apparatus for effecting at least one of tracking and servo control when an error signal passes a zero-cross point and reaches a predetermined non-zero value |
| 09/08/1992 | US5146441 Supporting device of an optical pickup |
| 09/08/1992 | US5146440 Track search apparatus |
| 09/08/1992 | US5146369 Data copying method for disk storage medium |
| 09/08/1992 | US5146080 Planar optical scanning head with concentric diffraction gratings |
| 09/08/1992 | US5145963 Optical information recording medium and nickel dithiolate complex compounds employed in the same |
| 09/08/1992 | US5145927 High surface hardness transparent resin prepared from a compound having terminal isopropenyl phenyl groups |
| 09/08/1992 | US5145757 By electron beam irradiation with at least one surface of article having continuous silver and hydration content |
| 09/03/1992 | WO1992015093A1 Method for reproducing signal in optically recording medium |
| 09/03/1992 | WO1992015092A1 Optically recording medium |
| 09/03/1992 | WO1992015091A1 Optically recording medium |
| 09/03/1992 | WO1992014616A1 Optical recording medium |
| 09/02/1992 | EP0501661A2 Linear actuator |
| 09/02/1992 | EP0501570A1 Digital control system and a sub-circuit to be used in the control system |
| 09/02/1992 | EP0501569A1 Method of manufacturing an object having a surface structure and arrangement for carrying out the method |
| 09/02/1992 | EP0501528A2 Method for data recording disc playback |
| 09/02/1992 | EP0501515A1 Optical recording material |
| 09/02/1992 | EP0501508A2 Recording and reproducing apparatus provided in each data block with a secret information number |
| 09/02/1992 | EP0501477A2 Information processing apparatus |
| 09/02/1992 | EP0501329A2 Compatible polymer mixtures |
| 09/02/1992 | EP0501067A2 Optical recording medium initializing method and apparatus |
| 09/02/1992 | EP0500717A1 Two-photon laser scanning microscopy |
| 09/02/1992 | EP0500547A1 Automatic focussing control. |
| 09/02/1992 | CN1018103B Method and apparatus for successively recording efm-modulated signals |
| 09/02/1992 | CN1018102B Record disk for information |
| 09/02/1992 | CN1018101B Nonvolatille optical disc memory with liquid crystal |
| 09/01/1992 | US5144618 Optical disc medium |
| 09/01/1992 | US5144617 Optical information read/write apparatus |
| 09/01/1992 | US5144616 Laser diode and multibeam optical head using the laser diode |
| 09/01/1992 | US5144615 Apparatus and method for recording and reproducing multi-level information |
| 09/01/1992 | US5144614 Optical pickup device |
| 09/01/1992 | US5144613 Thermal bulk erasure method for dye polymer optical media |
| 09/01/1992 | US5144611 Optical disk drive cleaner cartridge |
| 09/01/1992 | US5144610 Method of recording data on optical card by performing blank checking without scanning an entire track |
| 09/01/1992 | US5144609 Apparatus for tracking an optical disc |
| 09/01/1992 | US5144608 Apparatus for recording and reproducing information on and from a recording medium having a reference position mark |
| 09/01/1992 | US5144607 Objective lens driving device |
| 09/01/1992 | US5144606 Focusing-error detecting apparatus with a simple photodetector unit for use in an optical recording/reproducing device |
| 09/01/1992 | US5144605 Optical disk apparatus and method for controlling movement of light spot thereof |
| 09/01/1992 | US5144604 Optical information reading apparatus having an optical integration type pickup |
| 09/01/1992 | US5144603 Optical head incorporating refractive index distribution changeable lens |
| 09/01/1992 | US5144552 Optical information storage medium having grooves and pits with specific depths, respectively |
| 09/01/1992 | US5144333 Local treatment of surfaces of recording layer with solvent to alter absorption spectrum |