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)
01/1985
01/08/1985US4492718 Optical recording
01/08/1985US4492449 Apparatus and technique for detecting and controlling the focusing of an optical system by image sharpness and lateral shift techniques
01/02/1985EP0130026A1 High contrast thin film optical recording medium
01/02/1985EP0129760A1 Track following system with an optical reader for an audio or video disc reproducing device
01/02/1985EP0129730A2 Photo-electro data memory
01/02/1985CA1180445A Optical information record member
01/01/1985US4491941 Reproducing stylus for an information signal recording medium
01/01/1985US4491940 System for reproducing pulse time modulated waveforms stored along a diffractive track
01/01/1985US4491877 Cross-talk detector in information-carrying disc player
12/1984
12/27/1984EP0129324A2 Error-correction code for digital data on video discs
12/27/1984EP0129225A1 Disc-shaped optically readable information carrier with protective rim
12/27/1984EP0129019A2 Stamper and method for injection molding information bearing member
12/27/1984EP0128949A1 Coated media for optical recording and associated coating techniques
12/27/1984EP0128948A1 Coated media for optical recording, associated acrylic coatings and related application methods
12/27/1984EP0128906A1 Reflective optical data storage and laser recording medium
12/27/1984CA1180115A Thermomagnetic recording method
12/25/1984US4490759 Rotary head assembly having fluid thrust and radial bearings
12/25/1984US4490011 Optical device
12/20/1984WO1984004992A1 Disc-shaped recording medium
12/20/1984WO1984004991A1 Apparatus for adjusting optical axis of optical pickup
12/20/1984WO1984004990A1 A system and method for organizing and managing data stored on an informational disk
12/20/1984WO1984004965A1 Amplitude modulated coarse position error signal generation in an optical disk storage system employing coarse servo tracks
12/19/1984EP0128616A1 Optical recording element
12/19/1984EP0128426A2 Video signal recording and reproducing apparatus
12/19/1984EP0128219A1 Coated media for optical recording, with "soft/hard" overcoat
12/19/1984EP0128218A1 Coated media for optical recording with acrylic overcoat
12/18/1984US4489408 Beam-splitting prism, method of manufacturing said prism, and optical read and/or write unit provided with said prism
12/18/1984US4489406 Optical memory system having a short seek capability
12/18/1984US4488678 Method and apparatus for reading a bar code
12/18/1984CA1179535A1 Apparatus for the point-by-point scanning of an object
12/12/1984EP0127846A1 Information recording medium
12/12/1984EP0127845A2 System for focusing a light beam on a light reflecting surface
12/11/1984US4488308 Electronic bistable three-dimensional array
12/11/1984US4488279 Video recorder-playback machine
12/11/1984US4488277 Control system for an optical data recording apparatus
12/11/1984US4488276 Information read apparatus with tracking control system
12/11/1984US4488275 Tracking system for video disc player
12/11/1984US4488184 Videodisc playback system
12/06/1984WO1984004844A1 Coarse position error signal generation in an optical disk storage system employing coarse servo tracks
12/06/1984WO1984004841A1 Apparatus for driving objective lens of optical disc player
12/06/1984WO1984004824A1 Optical recording structure involving in situ chemical reaction in the active structure
12/05/1984EP0127516A1 Adjustable mount for a pivoting mirror and optical recording playback head using such a mount
12/05/1984EP0127448A1 Focussing error detecting apparatus
12/05/1984EP0127044A1 Optical storage media
12/04/1984US4486870 Optical data storage
12/04/1984US4486791 Apparatus for optically reproducing signals recorded on a rotating recording medium
12/04/1984CA1179059A1 Optical disks and recording and reproducing system using the same
11/1984
11/28/1984EP0126682A1 Method and apparatus for calibrating the optical power applied to an optical disc for data recording
11/28/1984EP0126594A1 Method for manufacturing an optical memory element
11/28/1984EP0126565A1 Improvements relating to data storage and recording
11/28/1984EP0126161A1 Optical disc
11/28/1984EP0126155A1 Coated media for optical recording and method of fabricating.
11/28/1984EP0126147A1 Data storage devices
11/28/1984EP0126126A1 Medium for recording visual images and laser written data
11/21/1984EP0125479A1 Flexible optical disc
11/20/1984US4484319 Apparatus for locating a track on disc-like optical information carriers
11/20/1984CA1178009A1 Method for making optically readable data storage devices
11/14/1984EP0125019A1 Device for controlling recording track jump operations
11/14/1984EP0124950A1 Record carrier in which information can be written and which can be read by optical means
11/14/1984EP0124580A1 Fine and coarse servo system for access and tracking on an optical disk.
11/13/1984US4482989 Apparatus for optically scanning a disc-shaped record carrier
11/13/1984US4482988 Objective lens mount and drive for optical disc player
11/13/1984US4482987 Optical information reproducing apparatus
11/13/1984US4482986 Objective lens mount for optical disc player
11/13/1984US4482903 Disk unit with retaining ring
11/13/1984US4482901 Method and system for thermally recording information on a metalized recording carrier
11/13/1984US4482803 Optical sensor for focusing control
11/13/1984US4482511 Method of manufacturing a stamper for information storage discs
11/08/1984WO1984004420A1 Data storage and recording
11/08/1984WO1984004417A1 Optical recording and reproducing apparatus
11/07/1984EP0124353A1 Optical disc player
11/07/1984EP0124140A1 Method of manufacturing an optically readable information disc
11/07/1984EP0123929A2 Device for the detection of faults
11/06/1984US4481620 Pregrooved optical-disk
11/06/1984US4481613 Optical disk apparatus
10/1984
10/31/1984EP0123409A1 Quadrilayer optical draw medium
10/31/1984EP0123223A2 Laser recording medium
10/31/1984EP0123048A1 Holographic optical head
10/30/1984US4480325 Optical pickup
10/30/1984US4480302 Optical recording media
10/30/1984US4480270 Audio/video signal recording method
10/30/1984CA1177169A1 Recording material
10/30/1984CA1177167A1 Pickup actuator
10/30/1984CA1177166A1 Apparatus for detecting a position of an optical pickup
10/30/1984CA1177165A1 Optical head receiver
10/25/1984WO1984004181A1 Numerical control device
10/24/1984EP0122816A2 Optical focus position control in an optical memory system
10/24/1984EP0122467A2 Image information registering/retrieving system
10/23/1984US4479146 Vertical code verifier
10/23/1984US4479051 Apparatus for driving objective lens in tracking direction
10/23/1984US4478782 Erasable recording medium comprising a dimer acid polyamide resin
10/23/1984US4478768 Method for manufacturing optical type recording medium
10/17/1984EP0122144A1 Optical data storage
10/17/1984EP0121989A1 Focussing error detecting apparatus
10/17/1984EP0121857A2 Mounting arrangement and driving apparatus suitable for optical disc player or recorder and player or recorder including such an arrangement or such apparatus
10/16/1984US4477891 Multi-bandwidth optical playback apparatus having minimum baseband distortion
10/16/1984US4477890 Mapping disc defect detector
10/16/1984US4477852 Magneto-optical recording and reproducing system
10/16/1984US4477843 System for still or slow-motion reproduction of television pictures
10/16/1984US4477838 Tangential error signal generator in PAL type video disc player
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