| 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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| 05/13/1992 | EP0485234A2 Information recording and reproducing device |
| 05/13/1992 | EP0484906A2 Head mounting device |
| 05/13/1992 | EP0484887A2 Laser diode device having a protective layer on its light-emitting end face |
| 05/13/1992 | EP0484823A1 Optical disk apparatus |
| 05/13/1992 | EP0484788A2 Optical disk apparatus and optical head |
| 05/13/1992 | EP0484625A2 Recorded data reader |
| 05/13/1992 | EP0484555A1 Optical information recording/reproducing device using pit edge recording system |
| 05/13/1992 | EP0332689B1 Least squares method and apparatus for determining track eccentricity of a disk |
| 05/12/1992 | US5113387 Three laser optical disk drive system |
| 05/12/1992 | US5113386 Focus and tracking error detector apparatus for optical and magneto-optical information storage systems |
| 05/12/1992 | US5113385 Optical disk cutting apparatus |
| 05/12/1992 | US5113384 Focus capture method for magneto-optic disk drives |
| 05/12/1992 | US5113378 Optical tracking system for an optical recording arrangement with plurality of beams |
| 05/12/1992 | US5113313 Optical element carrying printed substrate and optical head device using the substrate |
| 05/12/1992 | US5113061 Optical card having an identifier for identifying track construction and apparatus for writing and/or reading data on and/or from the optical card |
| 05/12/1992 | US5112727 Forming convex projections on a glass substrate |
| 05/12/1992 | US5112670 Quasi-randomly/serially accessible mass storage medium |
| 05/12/1992 | US5112205 Optical-disk manufacturing apparatus |
| 05/12/1992 | CA1300750C Focus detecting apparatus utilizing reflecting surface having variable reflectivity or transmissivity |
| 05/12/1992 | CA1300749C Optical reading or writing apparatus |
| 05/07/1992 | WO1992007911A1 Halogenated phthalocyanine compound, production thereof, and optical recording medium produced therefrom |
| 05/06/1992 | EP0484132A2 Multiple resolution machine readable symbols |
| 05/06/1992 | EP0484018A2 Phthalocyanine compounds useful as an infrared absorber |
| 05/06/1992 | EP0483879A2 Optical card recording/reproducing apparatus wherein a data process is made during an access operation |
| 05/06/1992 | EP0483830A1 Optical head |
| 05/06/1992 | EP0483717A2 Polymer blends |
| 05/06/1992 | EP0483542A1 A photochromic material and an optical storage medium using the same |
| 05/06/1992 | EP0483438A1 Integrated optical head structure |
| 05/06/1992 | EP0483388A1 Optical random access memory |
| 05/06/1992 | EP0483387A1 Dye composition and optical recording medium |
| 05/06/1992 | EP0483382A1 Metal chelate compound and optical recording medium prepared therefrom |
| 05/06/1992 | EP0483363A1 Production method of magnetooptical recording medium and magnetooptical recording medium |
| 05/06/1992 | CN2103851U Separable seizing and vibration-proof structure for c.d player |
| 05/06/1992 | CN1060919A Method and apparatus for positioning transducers |
| 05/06/1992 | CN1060912A Device for optically scanning information plane |
| 05/06/1992 | CA2054316A1 Optical disk apparatus and optical head |
| 05/05/1992 | US5111468 Diode laser frequency doubling using nonlinear crystal resonator with electronic resonance locking |
| 05/05/1992 | US5111449 Optical pick-up device using diffraction grating element having two sub-regions |
| 05/05/1992 | US5111448 Optical pickup head having a hologram-associated objective lens and optical information processing apparatus using the same |
| 05/05/1992 | US5111447 Integral pick up for an optical digital disc using saw deflection and lense |
| 05/05/1992 | US5111445 Holographic information storage system |
| 05/05/1992 | US5111443 Optical recording apparatus |
| 05/05/1992 | US5111442 Recordable optical disc storage device with limited storage capacity, and recording apparatus therefor |
| 05/05/1992 | US5111345 Disk memory device |
| 05/05/1992 | US5111339 Lens actuator |
| 05/05/1992 | US5111305 Video disk player having clv format |
| 05/05/1992 | US5111088 Guide rail mounting structure |
| 05/05/1992 | US5111041 Means for securing a photodetector to a base plate or the like |
| 05/05/1992 | US5111031 Optical card and a recording/reproduction apparatus for the same |
| 05/05/1992 | US5110968 Naphthalocyanine derivatives, production thereof, optical recording medium using the same, and production thereof |
| 05/05/1992 | US5110922 Condensation, cyclization |
| 05/05/1992 | US5110707 High efficiency of production |
| 05/05/1992 | US5110698 Method of recording |
| 05/05/1992 | US5110648 Optical storage medium |
| 05/05/1992 | CA1300264C Method of producing an optical recording card and transfer type optical recording medium |
| 05/05/1992 | CA1300262C Wavelength selective optical data storage system |
| 05/05/1992 | CA1300261C Optical information recording disk and optical information recording disk apparatus |
| 05/01/1992 | CA2051601A1 Integrated optical head structure |
| 04/30/1992 | WO1992007357A1 Circuit for scanning optical data substrates |
| 04/30/1992 | WO1992007356A1 Apparatus and method for writing and reading digital information |
| 04/30/1992 | WO1992007294A1 Laser imageable polyacetylene polymer |
| 04/29/1992 | EP0482964A2 Reproducing apparatus for reproducing plural types of optical discs |
| 04/29/1992 | EP0482920A2 Organic optical element |
| 04/29/1992 | EP0482851A2 A file management system for a partially rewritable storage medium |
| 04/29/1992 | EP0482645A2 Optical recording system |
| 04/29/1992 | EP0482606A2 Magneto-optical recording medium |
| 04/29/1992 | EP0473672A4 Interactive optical disk, method of fabrication and apparatus for recording thereon |
| 04/29/1992 | EP0305523B1 Optical card recording apparatus |
| 04/28/1992 | US5109377 Adding aluminum, chromium and/or titanium to either the transition metal or rare earth meal layer to improve corrosion resistance |
| 04/28/1992 | US5109376 Optical axis monitoring device |
| 04/28/1992 | US5109374 Small-sized optical memory device and information processing apparatus utilizing cylindrically shaped information recording medium |
| 04/28/1992 | US5109373 Optical information recording method |
| 04/28/1992 | US5109370 Information reading device for information recording medium having track structure |
| 04/28/1992 | US5109368 Optical device using a resilient member |
| 04/28/1992 | US5109367 Optical information recording and reproducing apparatus performing focus and/or track control by normalized error signals |
| 04/28/1992 | US5109366 Slip-off preventing tracking control apparatus |
| 04/28/1992 | US5109365 Record information reproducing method with content identifiers |
| 04/28/1992 | US5109287 Information storage system |
| 04/28/1992 | US5109070 Compositions of insulating polymers and sulfonated polyaniline compositions and uses thereof |
| 04/28/1992 | US5108873 IR-ray absorptive compound and optical recording medium by use thereof |
| 04/28/1992 | CA1299747C Optical recording medium |
| 04/28/1992 | CA1299746C Optical recording medium |
| 04/28/1992 | CA1299638C Objective lens-driving unit |
| 04/23/1992 | DE4032871A1 Schaltungsanordnung zur abtastung optischer aufzeichnungstraeger Circuit arrangement for scanning-optical record carrier |
| 04/22/1992 | EP0481753A2 Molding roll, method for manufacturing it, and apparatus for forming substrate sheet for optical recording medium |
| 04/22/1992 | EP0258104B1 Method of determining and of modifying a partition in a memory space of a non-erasable carrier |
| 04/21/1992 | US5107486 Optical memory device with grooves and pits in selected dimensional relationship |
| 04/21/1992 | US5107485 Double solenoid focus actuator for optical recording/playback apparatus |
| 04/21/1992 | US5107483 Frequency selective optical data record/regenerate apparatus |
| 04/21/1992 | US5107482 Optical information recording method and apparatus and recording medium used therefor |
| 04/21/1992 | US5107481 Recording area management system for writable type optional disk |
| 04/21/1992 | US5107479 Optical recording/reproducing apparatus |
| 04/21/1992 | US5107478 Tilt device for an optical head |
| 04/21/1992 | US5107477 Integrated optical pick-up device |
| 04/21/1992 | US5107476 Compact optical pickup apparatus for optical disc player |
| 04/21/1992 | US5107473 Optical recording/reproducing device using permissible ranges for the value of an automatic gain control voltage |
| 04/21/1992 | US5107472 Track access and laser beam alignment system for an optical recording and reproduction apparatus |
| 04/21/1992 | US5107409 Optical head for optical information recording/reproducing apparatus |
| 04/21/1992 | US5107135 Sinusoidal-to-squarewave converter with variable thereshold level |
| 04/21/1992 | US5107102 Arrangement for detecting a signal for effecting a focus control of an optical head |