Patents
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)
07/1993
07/08/1993WO1993012927A1 Self-assembled optical media
07/08/1993CA2116025A1 Digital sound system for motion pictures with analog sound track emulation
07/08/1993CA2104674A1 Wide beam detector system for optical memories
07/08/1993CA2086467A1 Optical tape
07/08/1993CA2086466A1 Optical tape
07/07/1993EP0550302A2 Track retrieval system for optical disk
07/07/1993EP0550105A2 Liquid-crystalline polyurethanes, compositions of said liquid-crystalline polyurethanes, and a device for optical data storage comprising a liquid-crystalline polyurethane
07/07/1993EP0550097A2 Optical reading device and optical recording device
07/07/1993EP0550095A2 Device in which electromagnetic radiation is raised in frequency and apparatus for optically scanning an information plane, comprising such a device
07/07/1993EP0550080A1 Method and device for the automatic processing of data recorded on a tachograph chart
07/07/1993EP0550036A2 Optical apparatus
07/07/1993EP0549990A1 Method of reading hologram information
07/07/1993EP0549901A1 Optical data recording media and method for recording and erasing data on the same
07/07/1993EP0549897A1 Substrate for optical recording medium and magneto-optical recording medium using same
07/07/1993EP0549845A1 System for integrated tape hole detection
07/07/1993CN1074058A Tribo-attractive contact slider for an optical read/write system
07/06/1993US5226033 Magneto-optical disk hub in which the inner peripheral edge portion of the spindle opening is strengthened and made abrasion resistant
07/06/1993US5226031 Method of reproducing information by optically scanning marks on a recording medium with compensation for noise components caused by marks adjacent a mark being scanned
07/06/1993US5226029 Electric charge image recording medium and recording/reproducing apparatus
07/06/1993US5226027 Recording method and device which provides an optimum setting of a record-carrier-dependent recording parameter
07/06/1993US5226026 Optical card reproducing apparatus provided with a function of generating pseudo synchronizing pattern detecting signals
07/06/1993US5225728 Non-contact-guidable magnetic floating device
07/06/1993US5225551 Electrography
07/06/1993US5225525 Photochromic benzothioxanthone oxides, process for their preparation and the use thereof
07/06/1993US5225317 Lamination multilayer resin layers with dyes and dissolving solvents and polymers
07/06/1993US5225273 Transparent electroconductive laminate
07/06/1993CA1319985C Method of and apparatus for recording an information signal
07/06/1993CA1319984C Optically readable record carrier with servo track
07/06/1993CA1319983C Method of and apparatus for successively recording efm-modulated signals
07/01/1993CA2086353A1 Liquid crystalline polyurethanes and a medium for optical data storage comprising the same
06/1993
06/30/1993EP0549562A2 Method and apparatus for recording and reproducing information
06/30/1993EP0549488A1 A storage media for an optical information system having an identification code embedded therein
06/30/1993EP0549482A2 Apparatus for focus error detection
06/30/1993EP0549282A2 Optical disk drive
06/30/1993EP0549237A2 Optical disk storage system and head apparatus therefor
06/30/1993EP0549236A2 Optical disk storage system and head apparatus therefor
06/30/1993EP0549155A2 Optical data disk control system
06/30/1993EP0549154A2 Repetitive pattern detection
06/30/1993EP0549153A2 Sector mark detection for optical data disks
06/30/1993EP0549152A2 Single chip controller for optical data disk drives
06/30/1993EP0549151A2 Optical data disk control systems
06/30/1993EP0549024A1 Optical record carrier
06/30/1993EP0548994A2 Method and apparatus for cleaning cylindrical outer surface of a disk for manufacturing disk-type information recording medium and a disk-type information recording medium made by using a disk cleaned by said method or apparatus
06/30/1993EP0548981A2 Optical information recording and reproducing apparatus
06/30/1993EP0548968A2 Optical recording element having durability enhancing layer
06/30/1993EP0548937A1 Optical disk drive
06/30/1993EP0548828A2 An optical data recording media and a method for recording, erasing and reproducing data on the same
06/30/1993EP0548465A2 Laser disk player
06/30/1993CN1021492C Magneto-optical recording or/and reproducing set
06/29/1993US5224193 First order mode frequency doubler system and method
06/29/1993US5224090 Optical recording members and method for production thereof
06/29/1993US5224088 High resolution optical scanner
06/29/1993US5224087 Apparatus for recording compressed digital information to an optical disc
06/29/1993US5224085 Optical recording and reproducing apparatus that cancels recording or erase mode if focus or tracking is improper
06/29/1993US5224084 Optical data recording and reproducing apparatus with plane parallel plate and diffraction grating
06/29/1993US5224083 Objective lens driving apparatus
06/29/1993US5224082 Method for detecting tracking error in optical disk system and its optical system devices thereof
06/29/1993US5224081 Search operation control apparatus in an optical disc reader
06/29/1993US5223983 Compound prism including interfaces with curvatures of the order of a laser wave length
06/29/1993US5223970 Optical axis adjusting mechanism and method for optical information recording and reproducing device, and jig therefor
06/29/1993US5223710 Optical angular position sensing system for use with a galvanometer
06/29/1993US5222310 Single wafer processor with a frame
06/24/1993WO1993012523A1 Optical scanning device
06/24/1993WO1993012522A1 Apparatus for recording and reproducing optical information
06/24/1993WO1993012521A1 Optical disc addressing devices, a method of use thereof
06/24/1993CA2123876A1 Optical disc addressing devices, a method of use thereof
06/23/1993EP0547630A2 Adaptive control system for a disk drive actuator
06/23/1993EP0547624A2 Magneto-optical head system
06/23/1993EP0547218A1 Audio record carrier and players for playing said record carrier.
06/22/1993US5222086 Method for the linking of data during the recording of encoded data on a recordable type optical disk
06/22/1993US5222058 Data recording apparatus capable of recording with predetermined data arrangement
06/22/1993US5222057 Tracking servo method used in an optical disk drive unit
06/22/1993US5222056 Optical pickup apparatus having a compact structure
06/22/1993US5222055 Optical head
06/22/1993US5222054 Seeking operation control apparatus in an optical disk reader
06/22/1993US5221751 Used in optical recording media
06/22/1993US5221588 Method for recording and erasing information
06/22/1993US5220754 Recovered compact disk and a method and an apparatus for recovery thereof
06/17/1993DE4140806A1 Optische abtastvorrichtung Optical scanning device
06/17/1993DE4140671A1 Test plate system for evaluating disc drives - has section matching test disc section mechanically coupled to hub and having adaptor to test performance of drive and head including eccentricity and height and level of engagement
06/16/1993EP0546994A1 Method for optical information-storage
06/16/1993EP0546818A1 Information recording and reproduction apparatus
06/16/1993EP0546621A2 Device for scanning a disc-shaped record carrier
06/16/1993EP0546543A2 Disc driving apparatus
06/16/1993EP0546525A1 Optical disc
06/16/1993EP0546245A1 Laser diode drive control apparatus
06/16/1993EP0546147A1 Medium, method and apparatus for storing and retrieving information
06/16/1993EP0545945A1 Process for shortening the access time (track control circuit)
06/16/1993CN1073270A 光学记录载体 Optical record carrier
06/16/1993CN1021260C Method and apparatus for recording information signal
06/15/1993US5220556 Optical disk with identification phase-encoded area
06/15/1993US5220553 Optical head
06/15/1993US5220551 Spindle control apparatus for disk player
06/15/1993US5220550 Optical beam system for optical disk drives
06/15/1993US5220549 Information recording/reproducing apparatus which includes pickup having memory for storing specific characteristics thereof
06/15/1993US5220547 Method and device for controlling optical head moving speed
06/15/1993US5220546 Operating optical disk drives including calibrating a tracking error signal
06/15/1993US5220545 Disk controller including format control unit instructing directly jump back operation
06/15/1993US5220543 Compact optical disc recording/reproducing system
06/15/1993US5220467 Circuit arrangement for reversing a magnetic field