Patents
Sitemap › G11 - Information storage › G11B - Information storage based on relative movement between record carrier and transducer › 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
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)
06/1982
06/29/1982US4337534 Solid state electro-optical track follower array
06/29/1982US4337532 System for controlling the change of read side for an optical reader for an information carrier
06/29/1982US4337531 Scanning head for an optical disc system
06/29/1982CA1126862A1 Process for recording a pre-corrected television signal on a video-disc
06/24/1982WO1982002105A1 Reading information stored in multiple frame format
06/24/1982WO1982002089A1 Optical disc and method of using same
06/23/1982EP0054438A1 Optical disk having an index mark
06/23/1982EP0054109A2 A video storage disk and a method of preparing the same
06/23/1982EP0054039A1 Flexible optical disc and method and apparatus for stabilizing during writing and/or reading of information thereon
06/22/1982US4336545 Optical disc structure, method and apparatus physically optimized for writing and reading with a single wavelength
06/15/1982USRE30974 Production of television signals from photographic disc recordings
06/15/1982US4335198 High intensity radiation, absorption, antireflection germanium sulfide, deformation, apertures, marking
06/15/1982US4335173 Method and means for reducing undesirable effects of dirt particles on a flexible record device
06/14/1982EP0045806A4 Real-time optical disc and method for record and readout.
06/09/1982EP0053476A2 Device for displacing a pickup head in at least two mutually perpendicular directions
06/08/1982US4334302 Flexible recording disc stabilizing and guidance system
06/08/1982US4334301 Optical reading apparatus with scanner light intensity control
06/08/1982US4334300 Stigmatic optical device and an optical recording head equipped with said device
06/08/1982US4334299 Optical signal recording and reproducing system
06/08/1982US4334233 Optical recording element and its manufacturing method
06/08/1982US4334007 Process of making an optically recordable and readable information carrier and the carrier obtained by this process
06/08/1982CA1125434A1 Mastering machine
06/01/1982US4333173 Optical information processor with prismatic correction of laser beam shape
06/01/1982US4332442 Reproducing objective for video disks
05/1982
05/26/1982EP0052454A2 Recording and/or reproducing equipment including a recording member
05/25/1982US4332022 Tracking system and method for video disc player
05/25/1982US4331976 High density recording system using side-by-side information and servo tracks
05/25/1982US4331966 Information storage device and method of forming same
05/25/1982CA1124402A1 Apparatus for scanning variable area optical sound tracks
05/25/1982CA1124396A1 Method of manufacturing an optically readable information disk
05/25/1982CA1124393A1 Optical read unit, for reading a moving information carrier, in particular for reading a video disc
05/25/1982CA1124392A1 Optical scanning device
05/25/1982CA1124391A2 Reproducing stylus for an information signal recording medium
05/25/1982CA1124387A1 Video recording disk with interlacing of data for frames on the same track
05/25/1982CA1124122A1 Information carrier and process for its manufacture
05/18/1982US4330883 System and method of optical information storage in a recording disc
05/18/1982US4330880 Apparatus for optically reading a disc-shaped record carrier, in particular for rapidly locating a desired program section
05/18/1982CA1123953A1 Digitally controlled optical recording device
05/18/1982CA1123640A1 Apparatus for reading an optical record carrier having a radiation-reflecting information structure
05/12/1982EP0051429A1 Optical memory device and system
05/12/1982EP0051343A2 Signal processing for digital optical disc players
05/12/1982EP0051339A1 Optical disc cartridge
05/12/1982EP0051331A1 Pivoting-mirror device
05/12/1982EP0051286A2 Process for making an imaging medium solution
05/12/1982EP0051285A2 Method and apparatus for recording and playing back continuous-play video signals together with stop-motion video and audio signals
05/12/1982EP0051283A1 Optical recording medium and method for its formation
05/12/1982EP0051282A2 Wide aperture objective lens
05/12/1982EP0051281A1 Composition for use in making an ablative imaging medium
05/11/1982US4329697 Information record
05/11/1982US4329575 Video disc having a label for identifying material recorded thereon
05/05/1982EP0050967A1 Signal detection system for use in an optically operating reproducing apparatus
05/04/1982US4328574 Apparatus and method for detecting crossmodulation distortion
05/04/1982US4328506 Optical recording device
05/04/1982US4328303 In situ decomposition
04/1982
04/29/1982EP0041982A4 A method for recording signals on bands by means of laser beams and apparatus for carrying out the method.
04/28/1982EP0050388A1 Optical information disk
04/28/1982EP0050367A1 Lens assembly for a video recorder-playback machine
04/28/1982EP0050366A1 Video recorder-playback machine
04/27/1982US4327430 Information signal recording medium of rotary type with overlapped tracks
04/27/1982US4327047 Using recessed center pin in mold
04/21/1982EP0050047A2 Information recording member and method of fabricating the same
04/21/1982EP0049934A1 Optically readable information disk
04/21/1982EP0049821A1 Data recording medium
04/21/1982EP0049813A1 Data recording medium and manufacturing method therefor
04/20/1982US4326282 Apparatus for reproducing digitally coded information recorded on an optically readable disc-shaped record carrier
04/20/1982CA1122321A1 Protected optical disc
04/15/1982WO1982001273A1 Method for processing an information signal and means for carrying out the method
04/13/1982US4325135 Optical record carrier and apparatus for reading it
04/07/1982EP0049076A1 A method of information recording on a semiconductor wafer
04/06/1982CA1121511A1 Optical system for recording and reading an information on a tape
04/01/1982WO1982001098A1 Metallized information carrying discs
03/1982
03/31/1982EP0048441A2 Track searching arrangement for an optical information recording and reproducing apparatus
03/30/1982US4322839 Method and apparatus for recording and reproducing information on and from an optical disk
03/30/1982US4322838 Dynamic focus adjustment for transmissive or reflective optical disc memory systems
03/30/1982US4322837 Dithered center tracking system
03/30/1982US4322836 High density recording system using side-by side information and servo tracks
03/24/1982EP0048211A1 Device for moulding articles by compression
03/24/1982EP0048041A2 Method and apparatus for writing a signal-information track by using a radiation beam
03/23/1982US4321701 Device for displacing the reading head of a video disc in radial and vertical directions
03/23/1982US4321700 Optical track segment intercept apparatus
03/23/1982US4321635 Apparatus for selective retrieval of information streams or items
03/23/1982US4321622 Video track transfer system and method
03/23/1982US4321621 High density recording system using side-by-side information and servo tracks
03/23/1982US4321102 Method for making gelatin epoxy sheet materials
03/23/1982US4320567 Optical inspection method for determining machinability
03/23/1982CA1120298A1 Reproducing objective lens for videodiscs
03/17/1982EP0047387A1 Process for manufacturing optically readable information carriers
03/16/1982US4320489 Electroconductive layer over a thermoplastic layer containing a light absorbing complex
03/16/1982US4320488 Recording and playback system
03/16/1982US4320486 Transferring information signals from a first to a second recording medium
03/16/1982US4320296 Method of and apparatus for recording image processing data in radiation image recording system
03/16/1982CA1120152A1 Optical transducer and focusing system
03/10/1982EP0047121A1 Imaging process
03/10/1982EP0047029A1 Device for processing optical information and method of manufacturing an axial coma correction plate as used in such a device
03/09/1982US4319252 Optical data storage and recording medium having a replaceable protective coverplate
03/09/1982US4318581 Optical holographic content-addressable memory system for truth table look-up processing
03/09/1982CA1119451A1 Method of making copies of information tracks on carriers
03/03/1982EP0039719A4 Motion picture film having digitally coded soundtrack and method for production thereof.
03/02/1982US4318112 Optical recording disc
03/02/1982US4317876 Photoresists
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