| 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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| 04/04/1993 | CA2079752A1 High resolution observation apparatus with photon scanning microscope |
| 04/01/1993 | WO1993006597A1 Optical recording with near-infrared dyes to effect bleaching |
| 04/01/1993 | WO1993006508A1 Optical elements and a method of producing them |
| 04/01/1993 | DE4140545A1 Optical pick=up with hologram unit for use with optical CD's - has output of laser diode split into three components passed through hologram plate and focussed onto disc. |
| 03/31/1993 | EP0534766A2 Data write device |
| 03/31/1993 | EP0534693A1 Optical disc with corrosion-resistant metallic reflective layer |
| 03/31/1993 | EP0534687A1 Optical Disc |
| 03/31/1993 | EP0534601A2 Optical disk, method of recording the same and optical pickup apparatus |
| 03/31/1993 | EP0534373A2 Optical pickup device |
| 03/31/1993 | EP0270684B1 Pickup transfer device of an optical disk apparatus |
| 03/31/1993 | CN1070504A Andio record carrier and players for playing said record carrier |
| 03/31/1993 | CN1020215C Optical scanning device |
| 03/30/1993 | US5199090 Flying magnetooptical read/write head employing an optical integrated circuit waveguide |
| 03/30/1993 | US5199024 Optical data storage medium having embedded tracking information |
| 03/30/1993 | US5199023 Optical information recording medium with a separating part between information tracks |
| 03/30/1993 | US5199022 Disk having data memorizing portion including land-shaped and groove-shaped areas, and writing/reading apparatus for the same |
| 03/30/1993 | US5199020 Optical head using an optical scanner |
| 03/30/1993 | US5199017 Optical disk drive and method for counting the number of tracks on an optical disk |
| 03/30/1993 | US5199016 Method and apparatus for processing data |
| 03/30/1993 | US5199015 Optical recording/reproducing device having means for adjusting servo loop gain and phase characteristics |
| 03/30/1993 | US5199014 Two axis electro-optical scanning device having orthogonal coils sharing one air gap |
| 03/30/1993 | US5199013 Optical head apparatus applicable to optical disc apparatus |
| 03/30/1993 | US5199012 Apparatus for detecting positional deviation of a moving stage in a two-stage optical recording/producing apparatus |
| 03/30/1993 | US5199011 Apparatus for attenuating optical crosstalk induced components of a focus error signal in an optical disk drive |
| 03/30/1993 | US5198916 Optical pickup |
| 03/30/1993 | US5198838 Optical pickup device which generates a focusing correction signal |
| 03/27/1993 | CA2077809A1 Data write device |
| 03/25/1993 | DE4231160A1 Magneto=optical information recording material - has glass substrate and recording film with reflective film structure having high reflectivity lasers alternating with low thermal conductivity layers |
| 03/24/1993 | EP0533217A2 Photo-mask |
| 03/24/1993 | EP0533215A1 Optical elements made from helical liquid crystal substances with reflection bands of linear polarised light, and a method for their manufacture |
| 03/24/1993 | EP0533204A2 Information recording/reproducing apparatus for converting and processing data exceeding error correction ability at recording |
| 03/24/1993 | EP0533197A2 Stripe laser diode having an improved efficiency for current confinement |
| 03/24/1993 | EP0532998A1 Picture orientation markable photo compact disk and method and apparatus for using same |
| 03/24/1993 | EP0211081B1 Apparatus for reading optical card |
| 03/23/1993 | US5197060 Dual substrate optical recording medium |
| 03/23/1993 | US5197059 Laser diode current supply including a threshold current component subject to automatic power control |
| 03/23/1993 | US5197058 Electronic offset compensation of the continuous composite track error signal in optical recording |
| 03/23/1993 | US5197054 Sum signal processing device for an optical disk drive |
| 03/23/1993 | US5197049 Head and media for optical data storage |
| 03/23/1993 | US5196866 In an imaging apparatus utilizing a writing element |
| 03/23/1993 | US5196697 Laser beam scanning apparatus having a variable focal distance device and the variable focal distance device for use in the apparatus |
| 03/23/1993 | US5196294 Erasable optical recording materials and methods based on tellurium alloys |
| 03/23/1993 | US5196284 Alloy of antimony, cadmium and tin |
| 03/23/1993 | US5196250 Optical information recording medium |
| 03/23/1993 | US5196231 Polysiloxanes |
| 03/23/1993 | US5196227 Acetylenic polymers with silane functionalities |
| 03/23/1993 | CA1315023C Photo-mask |
| 03/23/1993 | CA1314985C Optical head |
| 03/23/1993 | CA1314983C Optical information processing apparatus provided with means for holding an optical system in a predetermined position when abnormality occurs to tracking or focusing control |
| 03/18/1993 | WO1993005507A1 Recovering audio signals from a variable-area optical record |
| 03/18/1993 | DE4130550A1 Optische elemente und verfahren zu deren herstellung Optical elements and methods for their preparation |
| 03/18/1993 | CA2116034A1 Recovering audio signals from a variable-area optical record |
| 03/17/1993 | EP0532356A2 Method of recording data and information regarding defects |
| 03/17/1993 | EP0532279A2 Method of recording information on video disk |
| 03/17/1993 | EP0532278A2 Method of recording information on video disk |
| 03/17/1993 | EP0532277A2 Method of recording information on video disk |
| 03/17/1993 | EP0532276A2 Method of recording information on video disk |
| 03/17/1993 | EP0532274A1 Noise reduction system for optical record and reproduction apparatus using auto-power controlled semiconductor laser device |
| 03/17/1993 | EP0532246A2 Lens focusing method and means |
| 03/17/1993 | EP0532241A2 Calibration method and apparatus |
| 03/17/1993 | EP0532175A1 Optical device utilizing superresolution effect |
| 03/17/1993 | EP0532004A2 Method for manufacturing ROM type optical disk |
| 03/17/1993 | CN1020138C Method of and device for recording data signals on a record carrier of an-inscriballe type and device for reading such a record carrier |
| 03/17/1993 | CN1020137C System for recording information signal, and record carrier and recording device |
| 03/16/1993 | US5195152 Multichannel optical recording apparatus employing laser diodes |
| 03/16/1993 | US5195083 Disc-shaped recording medium capable of recording data signals by means of light beam |
| 03/16/1993 | US5195082 Optical disk structures for electron trapping optical memory media |
| 03/16/1993 | US5195081 Optical apparatus for effecting recording and/or reproducing of information on/from and optical information recording medium |
| 03/16/1993 | US5195080 Optical recording medium initializing method and apparatus |
| 03/16/1993 | US5195076 Defect detection circuit for optical pick up device |
| 03/16/1993 | US5195074 Rotatable read/write optical head apparatus |
| 03/16/1993 | US5195073 Apparatus for selectively recording analog and digital data on an optical disc |
| 03/16/1993 | US5195072 Error detecting device for optical head |
| 03/16/1993 | US5195071 Focus detecting optical head |
| 03/16/1993 | US5195070 Optical information processing apparatus and optical pickup therefor |
| 03/16/1993 | US5195069 Track jump controlling apparatus which can output decelerating pulses by switching a servo on after a fixed time |
| 03/16/1993 | US5195067 Track access control system for a disk storage system |
| 03/16/1993 | US5194996 Digital audio recording format for motion picture film |
| 03/16/1993 | US5194919 Optical type position detecting device |
| 03/16/1993 | US5194881 System and method to program a printing form |
| 03/16/1993 | US5194798 Servo circuit control method and system |
| 03/16/1993 | US5194363 Optical recording medium and production process for the medium |
| 03/16/1993 | US5194349 Silicon hydride, silicon carbon hydride and silicon nitrogen hydride on glass formed by vapor deposition and exposure to hydrogen, writing with a laser |
| 03/12/1993 | CA2071310A1 Acquiring focus in an optical disk system using a time and shape modified focus error signal |
| 03/11/1993 | CA2077285A1 Method for manufacturing rom type optical disk |
| 03/10/1993 | EP0530234A1 Process for shortening the switching on time of an optical recording and/or playback machine |
| 03/09/1993 | US5193083 Optical pick-up device |
| 03/09/1993 | US5193082 Optical/magnetic composite head having magnetic and optical heads in one integrated unit |
| 03/09/1993 | US5193081 Track-accessing controller for optical disks |
| 03/09/1993 | US5193080 Magneto-optical recording medium and apparatus |
| 03/09/1993 | US5192644 Photochromic material, layers laminated to each other through heat conductive transparent film |
| 03/09/1993 | US5192626 Optical recording medium |
| 03/04/1993 | WO1993004471A1 Optical scanning device |
| 03/04/1993 | WO1993004390A1 Autofocus device for an image forming apparatus |
| 03/04/1993 | WO1993003906A1 Injection-molded thermoplastic saturated norbornene resin, substrate of information medium element made therefrom, and information medium element |
| 03/04/1993 | DE4128245A1 Read-write system for data discs using fixed heads - assigns microelements to specific radial locations relating to tracks and integrated and non-rotating disc |
| 03/03/1993 | EP0530145A1 Coated material and its use |
| 03/03/1993 | EP0530023A2 Optical recording and reproducing apparatus for tracking wobbling guide grooves |
| 03/03/1993 | EP0529662A2 Optical disc and method for recording on optical disk |
| 03/03/1993 | EP0529658A2 Data reading and image processing system for CD-ROM |