| 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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| 01/02/1992 | EP0463392A1 An apparatus having a vacuum chamber |
| 01/02/1992 | EP0463295A2 Optical pickup head |
| 01/02/1992 | EP0463183A1 Data recording and reproducing methods |
| 01/02/1992 | EP0463068A1 Optical recording and/or playback system |
| 01/02/1992 | EP0380532B1 Preparation of thin layers of iron iii oxide for optical and/or magnetic recording |
| 12/31/1991 | US5077725 Optical memory device and apparatus for manufacturing the same |
| 12/31/1991 | US5077724 Optical tape cartridge |
| 12/31/1991 | US5077723 Optical pick-up apparatus which utilizes plural prisms |
| 12/31/1991 | US5077719 Optical disk access system |
| 12/31/1991 | US5077718 Optical information processing method and apparatus in which malfunctioning during tracking servo pull-in is prevented |
| 12/31/1991 | US5077716 Optical recording and reproducing system having an accurate high-speed optical head positioning apparatus |
| 12/31/1991 | US5077715 Information recording and reproducing method utilizing particular sector configuration |
| 12/31/1991 | US5077181 Optical recording materials comprising antimony-tin alloys including a third element |
| 12/31/1991 | US5077120 Optical disk |
| 12/30/1991 | CA2043969A1 Increasing storage density of information storage media |
| 12/27/1991 | EP0462928A2 Indolinimin dyes |
| 12/27/1991 | EP0462757A2 Polarization diffraction element and polarization detector employing the same |
| 12/27/1991 | EP0462561A2 Optical recording and playback device |
| 12/27/1991 | EP0462368A1 Optical data storage card |
| 12/27/1991 | EP0149755B1 Optical information recording and reproducing apparatus |
| 12/27/1991 | CA2041146A1 Methods and apparatus for optimizing track seeking operations |
| 12/27/1991 | CA2040212A1 Use of vacuum for improved density in laser-induced thermal dye transfer |
| 12/26/1991 | WO1991020081A1 Digital medium providing information per still-frame |
| 12/26/1991 | WO1991020078A1 Process for optical data storage |
| 12/26/1991 | WO1991020077A1 Optical servo system for magnetic disk |
| 12/24/1991 | US5075203 Naphthalocyanine derivatives, production thereof and optical recording medium using the same |
| 12/24/1991 | US5075147 Method for optically recording information and information recorded medium |
| 12/24/1991 | US5075145 Optical recording medium |
| 12/24/1991 | US5075060 Melt extrusion, pressurizrd passing between rollers, transferring pattern |
| 12/20/1991 | CA2039573A1 Optical data storage card |
| 12/19/1991 | DE4119384A1 Optical recording and playback disc system - uses multiple light beam provided by laser diode array for multiple valve processing |
| 12/18/1991 | EP0461956A1 Optical information storage on superimposed layers |
| 12/18/1991 | EP0461914A2 Restraint of uncontrolled movement of moving device |
| 12/18/1991 | EP0461912A2 Information recording and reproducing device |
| 12/18/1991 | EP0461831A2 Method for changing a file name of a directory in a non-rewritable record medium |
| 12/18/1991 | EP0461668A2 Data recording method |
| 12/18/1991 | EP0461619A2 Information memory medium and information recording/holding process making use of the medium |
| 12/18/1991 | EP0461132A1 Circuit arrangement for reversing a magnetic field. |
| 12/18/1991 | EP0214194B1 Process and circuit arrangement for focussing a light beam onto an optical recording medium |
| 12/18/1991 | EP0122467B1 Image information registering/retrieving system |
| 12/18/1991 | CN1057123A Controlling position of rotatable transducer in devices employing such transducers |
| 12/17/1991 | US5073887 Optical disk recording and reading system with directory data access mechanism |
| 12/17/1991 | US5073886 Signal reproducing circuitry and signal reproducing method for optical disc player |
| 12/17/1991 | US5073885 Optical memory disc driving apparatus |
| 12/17/1991 | US5073884 Tracking apparatus having movable and stationary parts |
| 12/17/1991 | US5073883 Objective lens driving apparatus including parallalogram structure |
| 12/17/1991 | US5073882 Servo-controlled actuator with two-peak flux density distribution |
| 12/17/1991 | US5073881 Optical disc apparatus with rapid and stable accessing capability |
| 12/17/1991 | US5073880 Information recording/reproducing method and apparatus |
| 12/17/1991 | US5073879 Information processing apparatus using a beam splitting means having non-polarization beam split surface |
| 12/17/1991 | US5073427 Substrate of optical disc |
| 12/17/1991 | US5073243 Method for producing an optical recording medium |
| 12/17/1991 | US5073219 Forming a liquid crystalline film on an elongate flexible subs trate and cutting to form a sheet |
| 12/17/1991 | US5073101 Information recording medium, production process and molding die for substrate therefor |
| 12/12/1991 | WO1991019290A1 Optical information recording/reproducing device using pit edge recording system |
| 12/11/1991 | EP0460916A2 Format and method for recording digital data on record disks with a pre-erasure need to save extra rotations |
| 12/11/1991 | EP0460890A2 Optical tracking system |
| 12/11/1991 | EP0460889A2 Optical tracking system |
| 12/11/1991 | EP0460860A1 Rotatable work tool assembly |
| 12/11/1991 | EP0460859A2 Focusing system for a moveable lens |
| 12/11/1991 | EP0460764A1 Method of transmitting a picture sequence of a full-motion video scene, and a medium for said transmission |
| 12/11/1991 | EP0460751A2 Method of transmitting audio and/or video signals |
| 12/11/1991 | EP0460708A2 Data storage device and method of data processing |
| 12/11/1991 | EP0460646A2 Polycarbonate resin composition for optical use |
| 12/11/1991 | EP0460565A2 Titanium phthalocyanines and processes for the preparation thereof |
| 12/11/1991 | EP0460462A1 Servo control system |
| 12/11/1991 | EP0460368A2 Optical pickup head |
| 12/11/1991 | EP0460347A2 Optical disk and its manufacturing method |
| 12/11/1991 | EP0460346A2 Method of manufacturing optical disk |
| 12/10/1991 | US5072438 Optical information recording disc and apparatus for driving the disc |
| 12/10/1991 | US5072437 Optical information reproducing apparatus |
| 12/10/1991 | US5072436 Optical device for recording and reproducing information |
| 12/10/1991 | US5072435 Information recording device which adjusts its recording parameters to the record carrier to be recorded |
| 12/10/1991 | US5072434 Recording medium transducing light spot moving velocity detection circuit |
| 12/10/1991 | US5072433 Objective lens mount utilizing leaf springs |
| 12/10/1991 | US5072423 Optical information memory medium recording and erasing information including gallium and antimony |
| 12/10/1991 | US5071673 Method for producing optical disc |
| 12/10/1991 | US5071236 Replica plate, process for producing the same and projection type television using the same |
| 12/05/1991 | DE4017485A1 Electronic offset correction for focus signals in CD player - using microprocessor to add compensation to error signal and offset value stored in memory during calibration at mfg. stage |
| 12/04/1991 | EP0459790A2 Optical record and reproduction apparatus |
| 12/04/1991 | EP0459764A2 Optical head device |
| 12/04/1991 | EP0459606A1 Optical disk replay apparatus |
| 12/04/1991 | EP0459586A1 Device for optically determining the position and orientation of an object, and optical recording and/or reproducing apparatus provided with such a device |
| 12/04/1991 | EP0459585A1 Scanning device comprising a rotatable mirror and drive unit for use in the scanning device. |
| 12/04/1991 | EP0459531A2 Apparatus for reproducing signals from both sides of discs |
| 12/04/1991 | EP0459517A1 Focussing-error detecting apparatus for optical disk drive |
| 12/04/1991 | EP0459420A2 Tracking control method and apparatus for an optical disc system |
| 12/04/1991 | EP0459309A2 Magneto-optical disk |
| 12/04/1991 | EP0459228A2 Production of optical storage media |
| 12/04/1991 | EP0459201A1 Heterocyclic polymethine dyes having carbamate or amide groups and optical recording medium |
| 12/04/1991 | EP0459157A2 Method and apparatus for playing back a recording medium automatically |
| 12/04/1991 | EP0459088A2 Optical pickup with supporting device |
| 12/04/1991 | EP0459087A2 Optical pickup for reproducing data on a disc |
| 12/04/1991 | EP0459080A2 Optical pickup for reproducing data on a disk |
| 12/04/1991 | EP0458975A1 Optical recording apparatus |
| 12/04/1991 | EP0458968A1 Sealed-type optical card |
| 12/04/1991 | EP0370067B1 Preparation of thin layers of iron iii oxide for optical and/or magnetic recording |
| 12/03/1991 | US5070496 Laser reproducing apparatus |
| 12/03/1991 | US5070495 Write calibration for magnetooptic disk recorders |
| 12/03/1991 | US5070494 Optical pickup device with dual-mode drive mechanism |