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)
02/1986
02/18/1986US4571718 Optical disk cartridge and cooperating apparatus
02/18/1986US4571716 Method and apparatus for scanning a recording medium for defects
02/18/1986US4571715 Optical head movable in a tracking direction
02/18/1986US4571714 Read beam position calibration
02/18/1986US4571713 Digital data record
02/18/1986US4571712 Method for generating a position control signal
02/18/1986US4571650 Magneto-optic information storage system utilizing a self-coupled laser
02/18/1986US4571602 Recording apparatus
02/18/1986US4571314 Process for producing substrate for optical recording medium
02/18/1986US4571026 Driving apparatus for an objective lens
02/18/1986CA1200899A1 Data carrier and apparatus for optically reading digital data inscribed in an arcuate pattern on a data carrier
02/13/1986WO1986001026A1 Apparatus for recording and/or reproducing optical cards
02/13/1986WO1986001021A1 Method of producing optical data recording medium
02/12/1986EP0171104A1 Optical recording element
02/12/1986EP0171045A2 Optical recording medium
02/11/1986US4570252 Optical data retrieval system using multi-spectral light sources
02/11/1986US4570251 Overlay recording prevention device for optical disc apparatus
02/11/1986US4570250 Optical sound-reproducing apparatus
02/11/1986US4570249 Optical read/write head for recording and playback of an optical disk and an optical device associated with said optical head
02/11/1986US4569903 Optical recording medium
02/11/1986US4569871 Fluoainated acrylic ester polymers
02/11/1986US4569806 Method and device for manufacturing an information carrier of a synthetic material having a laminated structure
02/11/1986CA1200609A1 Optical data retrieval system for multi- characteristic reflective data storage media
02/11/1986CA1200608A1 Optical memory system having improved positioning and focusing control circuitry
02/11/1986CA1200607A1 Opto-electronic focusing-error detection device
02/11/1986CA1200606A1 Optical storage system employing a novel multi-layer optical medium
02/11/1986CA1200605A1 Optical storage system employing a novel multi-layer optical medium
02/11/1986CA1200604A1 Optical memory system having an improved long seek capability
02/11/1986CA1200603A1 Optical memory system having improved track following and seeking capabilities
02/11/1986CA1200602A1 Optical memory system having improved track following
02/11/1986CA1200601A1 Optical track follower device with sampling
02/11/1986CA1200600A1 Digital audio disc system
02/11/1986CA1200596A1 System for recording continuous-play and stop-motion signal
02/11/1986CA1200446A1 Disc coating method
02/05/1986EP0170381A2 Focussing error detection device for use in optical disk type recording system
02/05/1986EP0169991A1 An optical signal recorder employing a transducer having an adjustable dichroic mirror
02/05/1986EP0169882A1 Optical data storage and readout apparatus
02/04/1986US4569072 Clock-controlled filtering arrangement
02/04/1986US4569039 Optical information output device
02/04/1986US4569038 Optical disk, high density optical disk system, and high density recording/reproducing method using the optical disk
02/04/1986US4568952 Optical record blank and information record
02/04/1986US4568845 Magnetic drive unit
02/04/1986US4568142 Objective lens drive apparatus
01/1986
01/30/1986WO1986000744A1 Optical storage structure
01/30/1986WO1986000743A1 Optical storage structure
01/30/1986WO1986000742A1 Apparatus for detecting tracking error of optical head
01/30/1986WO1986000741A1 Improved substrate for rigid disk storage media and method and apparatus for making the same
01/30/1986WO1986000719A1 Method of controlling temperature of a semiconductor laser in an optical scanning apparatus
01/30/1986WO1986000575A1 Graphic arts imaging constructions using vapor-deposited layers
01/29/1986EP0169597A1 Apparatus for reproducing information from a record carrier
01/29/1986EP0169579A2 Semiconductor laser drive circuit
01/29/1986EP0169433A1 Record carrier for optically recording along a track of pregrooved marks, and an optical tracking device therefor
01/29/1986EP0169367A1 Reversible optical information recording medium
01/29/1986EP0169229A1 Coating process
01/29/1986EP0169228A1 Ptfe coating process
01/28/1986US4567585 Optical tape recorder using linear scanning
01/28/1986US4567534 Apparatus for reading a disc-shaped record carrier
01/28/1986US4567533 Apparatus for reading a disk-shaped optical record carrier
01/28/1986US4567104 Ion exchanged surface layer with large concentration of silver oxide
01/28/1986US4566937 Electron beam enhanced surface modification for making highly resolved structures
01/28/1986CA1199877A1 Recording and/or reproducing apparatus for a disc
01/22/1986EP0169137A1 Method for storing on a disc several series of data for different users, and disc manufactured by this method
01/22/1986EP0168763A2 Method for fabricating a master recording disc
01/22/1986EP0168750A1 Protected optical disc with welded elements
01/21/1986US4566092 Process and device for generating synchronizing signals in an optical data carrier write-read apparatus
01/21/1986US4566091 Process and device for regenerating the phase of synchronizing signals in a data carrier optical write-read apparatus
01/21/1986US4566090 Storage medium track pitch detector
01/21/1986US4566089 Deviation correction apparatus for optical disc light beams
01/21/1986US4566088 Optical and reversible recording and reproducing apparatus
01/21/1986US4566087 Digital optical disk system
01/21/1986US4566086 Information storage system utilizing electrets
01/21/1986US4565772 Process of using radiation-sensitive carrier body to form stamper structure and subsequent use as a stamper to make optical disks
01/20/1986EP0114839A4 A high performance multi-processor system.
01/16/1986WO1986000459A1 Optical information carrier maintaining its flat shape
01/16/1986WO1986000458A1 Optical information carrier with mossaic structure
01/15/1986EP0168179A1 Improvements relating to photolithography
01/15/1986EP0167910A2 Optical signal recorder employing two lasers
01/14/1986US4564945 Error-correction code for digital data on video disc
01/14/1986US4564932 Method of fabrication of a protected optical disk and a disk obtained by said method
01/14/1986US4564931 Optical recording and reproducing head
01/14/1986US4564929 Information recording and reproducing apparatus with tracking control by sampling
01/14/1986US4564850 Radiation-sensitive record disc with improved internal structure
01/14/1986US4564757 Mirror position sensor for improved track selection in optical data disk system
01/14/1986US4564268 Optical system for semiconductor laser
01/14/1986EP0072854A4 Banking card for automatic teller machines and the like.
01/14/1986CA1199404A1 Silicon laminated media for archival optical storage
01/08/1986EP0167357A2 Photosensor devices and optical pick-ups
01/08/1986EP0167177A1 Method for recovering information from a selected track on a record disk
01/07/1986US4563760 Method of detecting light spot control signal
01/07/1986US4563058 Optical signal recorder employing a transducer having an adjustable dichroic mirror
01/07/1986CA1199110A1 Optical disc signal reproducing system with tilt immunization
01/03/1986WO1986000151A1 Improvements relating to photolithography
01/03/1986WO1986000048A1 Film for laser recording
01/02/1986EP0166614A2 Encoated optical recording medium
01/02/1986EP0166288A2 Liquid crystal bistable storage device
01/02/1986EP0166282A2 Process and apparatus for treating liquids with cation and anion exchangers
01/02/1986EP0166199A1 Recording disc and a method for fabricating same
12/1985
12/31/1985US4562578 Method for data transmission
12/31/1985US4562569 Tandem coupled cavity lasers with separate current control and high parasitic resistance between them for bistability and negative resistance characteristics and use thereof for optical disc readout
12/31/1985US4562568 Beam combining and separating apparatus useful for combining and separating reading and writing laser beams in an optical storage system