| 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) |
|---|
| 03/15/1989 | EP0307202A2 High-speed search method for use in a disc player system |
| 03/15/1989 | EP0307130A2 Position control method for movable member and apparatus therefor |
| 03/15/1989 | EP0307095A2 Helical scan recording |
| 03/15/1989 | EP0307081A2 Recording medium for optical data storage |
| 03/15/1989 | EP0306925A1 Recording method and recording apparatus |
| 03/14/1989 | US4813034 Optical disc recording apparatus with a light beam having a controllable quantity |
| 03/14/1989 | US4813033 Two axis electromagnetic actuator with axis balanced suspension |
| 03/14/1989 | US4813031 Apparatus for reproducing information from an optically readable record carrier |
| 03/14/1989 | US4813011 Data processing peripheral subsystems having a controller and a plurality of peripheral devices |
| 03/14/1989 | US4812857 Optical information record disk |
| 03/14/1989 | US4812726 Servo circuit positioning actuator |
| 03/14/1989 | US4812638 Focusing error detector and optical data detecting device incorporating the focusing error detector |
| 03/14/1989 | US4812637 Optical disc head with high signal-to-noise ratio |
| 03/14/1989 | US4812633 Optical data card |
| 03/14/1989 | US4812386 Tin, antimony and germanium |
| 03/14/1989 | US4812385 Recording elements comprising write-once thin film alloy layers |
| 03/14/1989 | US4812346 Optical disc base plate and process for producing the same |
| 03/14/1989 | US4812345 Optical disk substrate |
| 03/14/1989 | US4812218 Method of making a digital recording medium |
| 03/14/1989 | US4812020 Optical information recording and reproducing apparatus |
| 03/14/1989 | CA1251079A1 Optical pickup |
| 03/09/1989 | WO1989002150A1 Methods of accessing an optical recording track |
| 03/08/1989 | EP0306342A2 Optical information processing apparatus |
| 03/08/1989 | EP0306324A1 An optical memory system |
| 03/08/1989 | EP0306316A2 Methods of forming protective films on optical recording media |
| 03/08/1989 | EP0306179A2 Information recording and/or reproducing apparatus provided with means for detecting any abnormality of tracking servo |
| 03/08/1989 | EP0306128A2 Disk player and scanning method therefor |
| 03/08/1989 | EP0305979A2 Optical recording and reproducing system using optical recording medium |
| 03/08/1989 | EP0305938A1 Phthalocyanine compounds and utility thereof |
| 03/08/1989 | EP0305523A1 Optical card recording apparatus |
| 03/08/1989 | EP0188624B1 Apparatus for detecting tracking error of optical head |
| 03/07/1989 | US4811348 Semiconductor laser array device |
| 03/07/1989 | US4811331 Medium for recording digital information using an array of equally spaced micromirrors |
| 03/07/1989 | US4811329 Optical head with laser having particular source of driving current |
| 03/07/1989 | US4811328 Optical recording and reproducing device |
| 03/07/1989 | US4811327 Optical storage device |
| 03/07/1989 | US4811326 Method of recording digital information on an array of equally spaced micromirrors |
| 03/07/1989 | US4811325 High-speed reproduction facility for audio programs |
| 03/07/1989 | US4811321 Information recording medium |
| 03/07/1989 | US4811320 Optical type pickup apparatus with lens holder supported by frame wires each having an end inserted into a frame hole |
| 03/07/1989 | US4811317 Clock resynchronization after a track jump |
| 03/07/1989 | US4811316 Apparatus for seeking a track of an optical information carrier in which a loss of detection signal is compensated for |
| 03/07/1989 | US4811289 Optical recording device enploying doped crystal for optically storing information |
| 03/07/1989 | US4811194 Optical information processing apparatus |
| 03/07/1989 | US4810871 Electronically adjustable position-sensitive radiation detector and optical systems using same |
| 03/07/1989 | US4810868 Frasable optical wallet-size data card |
| 03/07/1989 | US4810547 Substrate with fine grooves and method for manufacturing the same |
| 03/07/1989 | US4810527 Annular layer of film-forming liquid deposited onto rotating substrate; optical recording media |
| 03/07/1989 | US4810073 Optical scanning apparatus |
| 03/02/1989 | DE3827761A1 Frequency-selective optical data recording and data reproduction apparatus |
| 03/02/1989 | DE3827738A1 Frequency-selective optical data recording and data reproduction apparatus |
| 03/02/1989 | DE3827667A1 Frequency-selective optical data recording and data reproduction apparatus |
| 03/02/1989 | DE3728106A1 Optically readable, disc-shaped information carriers |
| 03/01/1989 | EP0305214A2 A polycarbonate-made optical article and method of preparation therefor |
| 03/01/1989 | EP0305191A2 Track servo control system for optical disk apparatus |
| 03/01/1989 | EP0305169A2 Optical pickup apparatus and optical grating assembly therefor |
| 03/01/1989 | EP0305054A1 IR-ray absorptive compound and optical recording medium by use thereof |
| 03/01/1989 | EP0305049A1 Apparatus for detecting whether information is recorded on a storage device |
| 03/01/1989 | EP0305033A2 Recording device and reproducing device |
| 03/01/1989 | EP0304932A2 Optical disk access system |
| 03/01/1989 | EP0304560A2 Photodetector having cascaded photoelements |
| 02/28/1989 | US4809253 Focus control through detection of the rate of error in discs with a control signal inversely dependent on the error rate |
| 02/28/1989 | US4809251 Prewritten data storage medium and optical scanning device therefor |
| 02/28/1989 | US4809247 Video disc head tracking apparatus |
| 02/28/1989 | US4809022 Direct read after write optical storage medium |
| 02/28/1989 | US4808901 Control apparatus for linear motor |
| 02/28/1989 | US4808514 Forming crystalline areas in amorphous recording layer by exposure to infrared laser |
| 02/28/1989 | US4808456 Rare earth-transition metal alloy recording layer with rare earth metal covered edges |
| 02/28/1989 | CA1250469A1 Driving apparatus for an objective lens |
| 02/23/1989 | WO1989001686A1 Disk-like recording medium and disk apparatus |
| 02/23/1989 | EP0293494A4 Memorizing device with moving information carriers. |
| 02/22/1989 | EP0304312A1 An optical disk for use in optical memory devices |
| 02/22/1989 | EP0304299A2 An optical disc drive |
| 02/22/1989 | EP0304050A1 Optical information recording medium |
| 02/22/1989 | EP0303936A2 Method and apparatus for optical recording and reproduction |
| 02/22/1989 | EP0303700A1 Optical disk |
| 02/22/1989 | EP0303646A1 Instrument for the restitution of data. |
| 02/22/1989 | CN1031291A Process for producing information recording discs |
| 02/21/1989 | US4807220 Optically recordable carrier |
| 02/21/1989 | US4807219 Optical pickup feed unit of optical disk player |
| 02/21/1989 | US4807218 System for recording digital information using a regular array of discrete micromirrors |
| 02/21/1989 | US4807214 Apparatus for recording and/or reading information on an optical record carrier provided with preformed tracks |
| 02/21/1989 | US4807213 Laser drum for use in recording and reproducing information on optical tapes |
| 02/21/1989 | US4807212 Correcting for comatic aberration in an optical head of an optical disk apparatus |
| 02/21/1989 | US4807211 Apparatus for inscribing and/or reading a record carrier |
| 02/21/1989 | US4807210 Optical information processing apparatus |
| 02/21/1989 | US4807209 Record carrier body with a follow-on track and apparatus for recording information thereon |
| 02/21/1989 | US4807207 Tracking control device |
| 02/21/1989 | US4807206 Track jump detection system |
| 02/21/1989 | US4807205 Process for writing with updating and reading informations on a non-erasable support organized into sectors |
| 02/21/1989 | US4806952 Information recording apparatus for recording/reproducing information by irradiating an information recording medium with an energy beam |
| 02/21/1989 | US4806742 Portable laser diode scanning head |
| 02/21/1989 | US4806664 Novel tetraphenyldithiolene complexes, asymmetrically substituted benzoins, and optical recording materials containing the novel complexes |
| 02/21/1989 | US4805992 Astigmatism generator |
| 02/21/1989 | CA1250176A1 Optical recording medium |
| 02/16/1989 | DE3726458A1 Optical recording medium containing violanthrene compounds, and novel violanthrene compounds |
| 02/15/1989 | EP0303484A2 Process for producing information recording discs |
| 02/15/1989 | EP0303377A1 Method of recording position information of last track recorded with data in directory area |
| 02/15/1989 | EP0303373A1 Optical information recording apparatus provided with means for sampling and holding a servo signal when the intensity of a light beam is varied |
| 02/15/1989 | EP0303369A2 Address search method for use in a disk player system |