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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06/21/1994 | US5322754 Imaging members containing titanium phthalocyanines |
06/21/1994 | US5322750 Optical recording medium |
06/21/1994 | US5322747 Method of manufacturing an optical disc |
06/16/1994 | DE4242247A1 Data carrier - has optical disc storage contg. encrypted data on spiral tracks read by laser, with key stored in associated microprocessor |
06/16/1994 | DE4241619A1 Polycarbonate prepn. by interfacial polycondensation - with phosgenation of an aq. soln. of bisphenol in three stage reaction and feeding back aq. reaction phase to first step |
06/16/1994 | DE4241379A1 Operating mode changeover method for transportable equipment - triggering changeover between transport and stationary operating modes according to detected shocks |
06/15/1994 | EP0601894A1 Disc reading method and disc reading apparatus |
06/15/1994 | EP0601862A1 An optical device formed of multiple film layers |
06/15/1994 | EP0601746A2 Process and apparatus for manufacturing substrate sheet for optical recording mediums, process for preparing stamper and process for preparing photomask |
06/15/1994 | EP0601719A1 Treatment of compact discs |
06/15/1994 | EP0601567A2 Optical pickup device for magneto-optical recording and reproducing system |
06/15/1994 | EP0436656B1 Single stage seek method |
06/15/1994 | EP0435754B1 Method of linking coded data to be recorded on a writable optical disc |
06/15/1994 | EP0256110B1 Apparatus and method for increasing storage capacity of recording media |
06/15/1994 | CN1025084C Anti-skating control of positioning servo system |
06/15/1994 | CN1025078C Grating objective and grating-beam shaper and optical scanning device comprising at least are of said elements |
06/14/1994 | US5321824 Accessing last recorded data in a continuation chain |
06/14/1994 | US5321684 Bidirectional sinusoidal scanning system |
06/14/1994 | US5321683 Digital optical tape read system |
06/14/1994 | US5321682 Method of and device for recording information on a record carrier having a recording layer which, when heated, undergoes an optically detectable change |
06/14/1994 | US5321681 Apparatus for recording, storing and electronically accessing images |
06/14/1994 | US5321679 Apparatus for recording and/or reproducing information on and/or from record medium by using pick-up and method of resetting operational condition of the same |
06/14/1994 | US5321678 Optical head carriage, tracking mechanism and displacement detecting mechanism |
06/14/1994 | US5321677 High-speed search apparatus for use with a video disk player |
06/14/1994 | US5321676 Record carrier scanning apparatus wherein the scanning head is positioned without feedback and a predetermined range of fine positioning of the scanning point is maintained |
06/14/1994 | US5321675 Pit spacing in the servo field of an optical disk for speed and direction detection and data retrieval |
06/14/1994 | US5321673 Partial ROM type optical disk and its recording and reproducing apparatus |
06/14/1994 | US5321550 Optical system of optical information recording/reproducing apparatus |
06/14/1994 | US5321549 Cleaning apparatus for an object lens |
06/14/1994 | US5321519 Crosstalk detector for optically read signals |
06/14/1994 | US5321501 Method and apparatus for optical imaging with means for controlling the longitudinal range of the sample |
06/14/1994 | US5321254 Light-receiving and amplyfying device capable of widening an AC operation range |
06/14/1994 | US5320936 Photo responsive material employing a thiophene derivative having long conjugated chain at 3-position |
06/14/1994 | US5320930 Optical recording medium and process for recording thereon |
06/14/1994 | US5320876 Patterns from stamper to uv curable resin on base plate; optical recording media |
06/14/1994 | US5320875 Plasma polymerizing organosilicon monomer in presence of excess oxygen |
06/14/1994 | US5320787 Apparatus and process for manufacturing substrate sheet for information recording mediums |
06/14/1994 | US5320515 Apparatus for defacing compact discs |
06/14/1994 | US5320514 Roll stamper, and apparatus and process for manufacturing substrate sheet for information recording mediums by using the same |
06/09/1994 | WO1994012977A1 Disk read-out circuit |
06/09/1994 | DE4240313A1 Improved flow polycarbonate(s) for optical data carriers - having Tg 140 deg. C or above and specified melt viscosity |
06/09/1994 | DE4235676A1 Chamber and chamber combination for transfer of at least one component - with a component holding element swivelled through a chamber opening |
06/08/1994 | EP0600737A2 Disc device |
06/08/1994 | EP0600677A1 Cinefilm and recording and reproduction thereof |
06/08/1994 | EP0600623A2 Servo loop control |
06/08/1994 | EP0600427A1 Optical information recording medium and composition for optical information recording film |
06/08/1994 | EP0600426A2 Apparatus with light-emitting element and method for producing it |
06/08/1994 | EP0600238A1 Optical disc recording/reproducing apparatus |
06/08/1994 | EP0600086A1 Injection-molded thermoplastic saturated norbornene resin, substrate of information medium element made therefrom, and information medium element |
06/08/1994 | EP0599901A1 Optical scanning device. |
06/08/1994 | EP0513062B1 Data storage medium and methods for recording and reading of data |
06/08/1994 | EP0504158B1 Circuit arrangement for operating a light source for the optical scanning of recording substrates |
06/07/1994 | US5319629 Content addressable optical data storage system |
06/07/1994 | US5319628 Device for recording an information signal and a related auxiliary signal |
06/07/1994 | US5319627 Method for managing a defect in an optical disk by assigning logical addresses based upon cumulative number of defects in the disk |
06/07/1994 | US5319626 Method for rewriting defect management areas on optical disk according to ECMA standard |
06/07/1994 | US5319625 Apparatus using demodulators to detect crosstalk from a signal read from a recording medium |
06/07/1994 | US5319624 Electromagnetic actuator and optical disk apparatus incorporating the same |
06/07/1994 | US5319623 Data-track search apparatus for locating a desired data track on a record carrier |
06/07/1994 | US5319622 Control and information disk for disk recording system |
06/07/1994 | US5319507 Recording/reproducing system using a flexible magnetic disk |
06/07/1994 | US5319497 Lens drive device with lens holder carrying drive flux generating magnets |
06/07/1994 | US5319481 Encapsulated liquid crystal optical read/write storage medium and system |
06/07/1994 | US5319034 Process for making a polymer for an optical substrate by hydrogenating a cycloolefin copolymer |
06/07/1994 | US5318882 Optical recording medium containing a light stabilizer comprised of aryl nitrogen compound |
06/07/1994 | US5318653 Applying adhesive that cures at room temperature, slowly bring first and second disk into contact, curing adhesive |
06/07/1994 | CA2001770C Optical recording media |
06/07/1994 | CA2001769C Optical recording media |
06/01/1994 | EP0599807A1 Position detector |
06/01/1994 | EP0599806A1 Position detector |
06/01/1994 | EP0599655A1 A protective cover for a compact disc |
06/01/1994 | EP0599406A1 Injection moulding or injection compression moulding machine |
06/01/1994 | EP0599392A1 Scanning device with two-stage controller for positioning a scanning point |
06/01/1994 | EP0599389A2 Method and recording device for recording signals on a record carrier |
06/01/1994 | EP0598761A1 Photorefractive systems and methods |
06/01/1994 | EP0340221B1 Multiple card recording system |
06/01/1994 | DE4239776A1 Injection or injection compression machine for prodn. of information=carrying discs - has two or more adjacent tools each supplied with polymer from separate injection units |
06/01/1994 | CN1024856C Optical disc recording apparatus |
05/31/1994 | US5317557 Optical head for recording and reproducing information on and/or from optical record medium |
05/31/1994 | US5317556 Information processing apparatus and optical head incorporated therein |
05/31/1994 | US5317554 Magazine loader having an ejector arm |
05/31/1994 | US5317553 Optical disc recording and/or reproducing apparatus having a buffer memory to accommodate track jumps |
05/31/1994 | US5317552 Linear actuator for driving an optical head incorporated in an optical disk |
05/31/1994 | US5317551 Optical disk head including a light path having a thickness and width greater than the light beam wavelength by a predetermined amount |
05/31/1994 | US5317550 Apparatus and method for track access |
05/31/1994 | US5317549 Information recording and reproducing apparatus |
05/31/1994 | US5317149 Optical encoder with encapsulated electrooptics |
05/31/1994 | US5317144 Wave front aberration measuring apparatus having means for adjusting position of collimator lens |
05/31/1994 | US5317143 Optical data medium driving apparatus and a servo circuit with normalization processing |
05/31/1994 | US5317139 Film optical code reader having clock and data sensors |
05/31/1994 | US5316900 Multilayer element with recording, reflecting layers and birefringent layers |
05/31/1994 | US5316899 Two oxa-cyanine dyes of specific light absorption distribution s |
05/31/1994 | US5316852 Coated material and the use thereof |
05/31/1994 | US5316814 Write-once compact disks |
05/31/1994 | US5316813 Uses photochemical hole burning; anthraquinone derivatives as guest molecules and polyhydroxyalkyl (meth)acrylates |
05/31/1994 | US5316806 Liquid crystal polymers |
05/31/1994 | CA2009088C Optical recording medium, optical recording method and optical recording device used in method |
05/28/1994 | CA2109902A1 Protective cover for a compact disc |
05/26/1994 | WO1994011869A1 Device for driving optical part |
05/26/1994 | WO1994011301A1 Carbon fluoride particles, process for producing the same, and use thereof |