| 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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| 01/04/1994 | US5276673 Read-only optical disk containing a reflective layer comprising an Al alloy containing Ta |
| 01/04/1994 | US5276671 Control apparatus of laser diode |
| 01/04/1994 | US5276670 Phase change optical disk and method for using the same |
| 01/04/1994 | US5276669 Synchronous recording and playback of left and right stereo channels on separate digital discs |
| 01/04/1994 | US5276667 Optical recording and reproducing apparatus for synchronizing recording on subsequent unrecorded sectors |
| 01/04/1994 | US5276665 Magneto-optical disk recording and reproducing apparatus capable of reproducing a plurality of disk types |
| 01/04/1994 | US5276664 Binarization apparatus for reproduced signal in reproduction apparatus of optical disc |
| 01/04/1994 | US5276663 Optical information recording-reproducing apparatus including a condensing lens secured to a lens barrel |
| 01/04/1994 | US5276163 Optical disk with improved reflection, cyanine dyes |
| 01/04/1994 | US5276098 Thermoplastic saturated norbornene group polymer composition |
| 01/04/1994 | US5275925 Infrared-absorptive compound containing optical recording medium |
| 12/29/1993 | EP0576331A1 Integrated optical device for the supervision of the focus and position of an image |
| 12/29/1993 | EP0576072A1 Polarization-sensitive beam splitter, method of manufacturing such a beam splitter and magneto-optical scanning device including such a beam splitter |
| 12/29/1993 | EP0576036A2 Optical information recording element using AZO dyes |
| 12/29/1993 | EP0575963A2 Method for detecting a signal recorded on an optical recording medium |
| 12/29/1993 | EP0575934A2 Recording and reproduction of information in ROM-RAM storage media |
| 12/29/1993 | EP0575822A1 Optical card |
| 12/29/1993 | EP0575816A1 Light-absorbing compound and optical recording medium containing same |
| 12/29/1993 | EP0303700B1 Optical disk |
| 12/28/1993 | US5274779 Digital computer interface for simulating and transferring CD-I data including buffers and a control unit for receiving and synchronizing audio signals and subcodes |
| 12/28/1993 | US5274764 System for controlling continuous data input of an optical disk |
| 12/28/1993 | US5274624 Optical recording medium |
| 12/28/1993 | US5274623 Information recording medium having high modulation degree |
| 12/28/1993 | US5274622 Apparatus for controlling emission power of laser diode |
| 12/28/1993 | US5274621 Information recording/reproduction apparatus |
| 12/28/1993 | US5274618 Test apparatus for an optical recording disc |
| 12/28/1993 | US5274617 Method and device for data management in an optical recording medium |
| 12/28/1993 | US5274615 Method of accessing a card shaped recording medium |
| 12/28/1993 | US5274612 Information processor and disk memory used in the same |
| 12/28/1993 | US5274507 High performance disk storage system |
| 12/28/1993 | US5273861 Optical information recording medium, method of making an optical information recording medium and method of recording/reproducing optical information |
| 12/28/1993 | US5273860 Information recording medium |
| 12/28/1993 | US5273800 An indole-based cyanine dye as a water-soluble, near infrared-absorbing compound and heat sensitive basic leuco dye |
| 12/28/1993 | US5273598 Optical disc manufacturing method |
| 12/24/1993 | CA2097858A1 Magneto-optical recording medium |
| 12/23/1993 | WO1993026003A1 Simultaneous mo and rom optical disk signal detection |
| 12/23/1993 | WO1993026002A1 Recording media |
| 12/23/1993 | WO1993026001A1 Method and apparatus for calibrating laser write power in a magneto-optical recording system |
| 12/22/1993 | EP0575200A1 Recording medium capable of suppressing resonance from recording and reproducing devices |
| 12/22/1993 | EP0575177A1 Optical recording medium, substrate for optical recording medium, and method for preparing substrate for optical recording medium |
| 12/22/1993 | EP0575176A1 Optical recording medium, information recording method and information reproducing method |
| 12/22/1993 | EP0575135A2 Information processing method and apparatus |
| 12/22/1993 | EP0574996A1 Device for optically scanning a surface |
| 12/22/1993 | EP0574995A1 Device for optically scanning a surface |
| 12/22/1993 | EP0574975A1 A device for processing disc-shaped registration carriers |
| 12/22/1993 | EP0574886A2 Optical recording medium and playback method thereof |
| 12/22/1993 | EP0574860A2 Optical information medium and method for printing the surface of the medium |
| 12/22/1993 | CN1023262C Reproducing and/or recording apparatus |
| 12/21/1993 | US5272692 Data storage member having areas in which intensity-modulated signals are overlaid with magneto-optically recorded signals |
| 12/21/1993 | US5272690 Hologram element system |
| 12/21/1993 | US5272689 Optical head system with transparent contact member |
| 12/21/1993 | US5272688 Apparatus for writing and/or reading information on and/or from optical card |
| 12/21/1993 | US5272687 EFM signal compensation circuitry |
| 12/21/1993 | US5272686 Servo signal generator for optical disk driving apparatus |
| 12/21/1993 | US5272685 Optical system for an information processing apparatus |
| 12/21/1993 | US5272684 Information recording method and information recording apparatus for magneto-optic recording information medium |
| 12/21/1993 | US5272667 Optical information recording apparatus for recording optical information in a phase change type optical recording medium and method therefor |
| 12/21/1993 | US5272569 Apparatus for a fine adjustment focus actuator in an optical information storage system |
| 12/21/1993 | US5272552 Optical modulation device and method using modulation layer of helical polymer liquid crystal having a helical chiral smectic C phase |
| 12/21/1993 | US5272550 Hologram system |
| 12/21/1993 | US5272329 Optical pickup device using a holographic optical element and an amplifier |
| 12/21/1993 | US5272326 Optical card having light absorbing layer |
| 12/21/1993 | US5272235 Cycloolefin random copolymer and process for preparing same |
| 12/21/1993 | US5272047 Optical information recording medium using azo dyes |
| 12/21/1993 | US5271979 Optical recording medium containing polymethine compound |
| 12/21/1993 | US5271978 Optical recording media |
| 12/16/1993 | DE4319077A1 Mini disc digital audio recording system using compressed data - read from disc using memory to allow for difference in rate of data reading and processing |
| 12/15/1993 | EP0574239A1 Method and apparatus for reading photographically recorded digital audio signals |
| 12/15/1993 | EP0574136A2 Photosensitive media and photographic recording of digital audio thereon |
| 12/15/1993 | EP0574092A1 Photo-masks |
| 12/15/1993 | EP0574025A2 Optical recording medium and method for making same |
| 12/15/1993 | EP0407573B1 Disc recording apparatus |
| 12/14/1993 | US5271022 Digital optical sound system |
| 12/14/1993 | US5271021 Digital optical sound system |
| 12/14/1993 | US5270998 Rewritable recording medium and recording reproducing apparatus for use with rewritable recording medium |
| 12/14/1993 | US5270997 Optical head with reduced aberration |
| 12/14/1993 | US5270996 Optical head with diffraction grating producing five diffracted detection light beams |
| 12/14/1993 | US5270995 Method for recording and reproducing information by varying a work function of a recording medium and device for the same |
| 12/14/1993 | US5270991 Track format for use with an optical record carrier having a varying track pitch |
| 12/14/1993 | US5270988 Optical recording and reproducing apparatus making access by multitrack jump |
| 12/14/1993 | US5270879 Magneto-optical disk inspecting method and apparatus |
| 12/14/1993 | US5270877 Information recording medium and information recording and reproducing apparatus |
| 12/14/1993 | US5270870 Athermalized beam source and collimator lens assembly |
| 12/14/1993 | US5270869 Passively athermalized optical assembly incorporating laminate fiber compensation ring |
| 12/14/1993 | US5270731 Laser thermal printer with positive air flow |
| 12/14/1993 | US5270463 Halogenated alkoxyphthalocyanines |
| 12/14/1993 | US5270150 Optical recording medium and process for producing it |
| 12/14/1993 | US5270149 Reversible optical recording medium of the phase charge type |
| 12/14/1993 | CA1325274C Recording medium and recording and reproducing apparatus employing the recording medium |
| 12/14/1993 | CA1325273C Optical head devices for use in recording and/or reproduction of information |
| 12/13/1993 | CA2098125A1 Light-absorbing compound and optical recording medium containing same |
| 12/09/1993 | WO1993024929A1 Optical disk recorder/reproducer |
| 12/08/1993 | EP0573374A1 Athermally compensated optical head for a laser scanner |
| 12/08/1993 | EP0573369A1 Dual diffraction grating beam splitter |
| 12/08/1993 | EP0573290A1 Tracking-servo-system controller in an optical-disk player |
| 12/08/1993 | EP0573259A2 Device for and method of recording information and reproducing the same with delay time |
| 12/08/1993 | EP0573021A1 Reproducing system for an optical disc |
| 12/08/1993 | EP0572982A1 Optical information processing apparatus |
| 12/08/1993 | EP0572981A1 Phase-change type optical disk device and optical head to be used therein |
| 12/08/1993 | EP0572973A2 Metal chelate compound and optical recording medium using the compound |