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)
11/1982
11/09/1982US4358774 Apparatus and method for controlling focus in a recording system
11/09/1982US4358200 Optical focussing-error detection system
11/09/1982CA1135413A1 Optical recording medium
11/03/1982EP0063934A2 Optical devices for controlling a light beam
11/03/1982EP0063830A1 Device for detecting the position of an object
11/02/1982US4357696 Optical scanning apparatus with focussing system
11/02/1982US4357627 Method and apparatus for improving resolution of scophony scanning system utilizing carrier phase reversal
11/02/1982US4357616 Recording medium
11/02/1982US4357533 Focus detector for an optical disc playback system
11/02/1982US4357366 Oxidation, tellurium, thin films
11/02/1982CA1134949A1 Method for photographic replication of information on an optical date storage medium
11/02/1982CA1134948A1 Multi-axis movable mirror device
10/1982
10/28/1982WO1982003590A1 Copy controlling system
10/27/1982EP0063461A2 Data storage arrangement
10/27/1982EP0063439A1 Optically readable record carriers
10/27/1982EP0063316A1 Method of and apparatus for reading out image information
10/26/1982CA1134508A1 Broadband reflective laser recording and data storage medium with absorptive underlayer
10/20/1982EP0062975A1 Optical recording medium
10/19/1982US4355383 Apparatus for scanning variable area optical sound tracks by parallel processing discrete photosensor outputs
10/19/1982US4354988 Process for making video discs
10/19/1982CA1134035A1 Record carrier with an optically readable radiation-reflecting information structure
10/13/1982EP0062465A1 Tracking system for optical record medium
10/13/1982EP0062464A2 Tracking system for a reading beam
10/13/1982EP0062366A1 Optically readable information disc and method of manufacturing same
10/12/1982US4354103 Optical focusing device with two controls
10/12/1982US4353767 Coating two discs with a light sensitive material, and bonding together
10/06/1982EP0061584A1 Pregrooved optical-disk
10/05/1982US4353089 Apparatus for correcting the time base of information recovered from a movable information storage medium
10/05/1982US4353077 Optical floppy disc data storage and retrieval techniques
10/05/1982US4352981 Photoelectric focus and tracking apparatus
10/05/1982US4352564 Missing order defect detection apparatus
10/05/1982CA1133130A1 Video disc player
09/1982
09/30/1982WO1982003279A1 Sound reproduction method and apparatus
09/29/1982EP0061384A1 Optical automatic focusing sensor
09/29/1982EP0061194A2 Optical recording device
09/28/1982CA1132399A1 Recording images using radiation absorbing particles in a binder capable of solid-nonsolid transitions
09/21/1982US4350988 Recording apparatus for effecting recording by a beam
09/21/1982CA1132258A1 Scanning head for an optical disc system
09/21/1982CA1132257A1 Method and apparatus for controlling the speed of a movable information storage medium
09/21/1982CA1132256A1 Video player-recorder with non-linear mark length modulation
09/21/1982CA1132255A1 Dithered center tracking system
09/21/1982CA1132230A1 Device for the application of a control voltage across a piezo electric positioning element
09/21/1982CA1132229A1 Device for controlling a piezo-electric positioning element
09/15/1982EP0060017A1 Stretched-film optical recording disc
09/14/1982US4349901 Apparatus and method for reading optical discs
09/14/1982CA1131774A1 Optical recording medium
09/14/1982CA1131690A1 Recording medium
09/10/1982EP0054039A4 Flexible optical disc and method and apparatus for stabilizing during writing and/or reading of information thereon.
09/07/1982US4348461 Concentration gradients of intermetallic thin film comprising arsenic, selenium, and tellurium; video disks, magnetic tapes
09/07/1982CA1131361A1 Focus servo device for use in optical read-out device of information
09/07/1982CA1131058A1 Wave plate retarder
09/02/1982WO1982002969A1 Banking card for automatic teller machines and the like
09/02/1982WO1982002968A1 Banking card for automatic teller machines and the like
09/01/1982EP0059096A2 An information recording material
09/01/1982EP0059084A1 Optical reader apparatus
08/1982
08/31/1982US4347619 Digital formatting system
08/25/1982EP0058496A2 Protuberant optical recording medium
08/24/1982US4346471 Optical apparatus for tracking a record carrier
08/24/1982CA1130456A1 Information signal recording system
08/18/1982EP0058018A1 Reading information optically
08/18/1982EP0057764A2 Method of recording and reproducing colored originals on a recording member, bearing an electro-sensitive layer
08/17/1982US4345321 Semiconductor laser source optical reading head
08/17/1982US4345261 Dielectric recording medium
08/17/1982CA1130000A1 Releasable carriage drive unit for an optical disc player
08/17/1982CA1129988A1 System for enhanced light uniformity in a document scanner system
08/17/1982CA1129779A1 Light beam scanning device
08/11/1982EP0057339A1 Optical focus detecting system and optical recorder-reader including such a system
08/10/1982US4344165 Method and system for a disc player tracking servo
08/10/1982US4344164 Optical device for access to a track carried by a data carrier and optical memory system incorporating such a device
08/10/1982US4343879 Lasers
08/10/1982US4343862 Recording layer sandwiched between polyimide or fluoropolymer and fluoropolymer
08/05/1982EP0044840A4 Information carrying discs.
08/04/1982EP0057070A2 Optical information reading apparatus
08/04/1982EP0056920A1 Optical system for enregistration and restitution from an information carrier comprising two laser sources with different wavelengths
08/03/1982US4342935 Binary piezoelectric drive for lens focusing system
08/03/1982US4342714 Applying organometallic compound
08/03/1982CA1129094A1 Fm signal demodulator with defect detection
08/03/1982CA1129093A1 Optical head
08/03/1982CA1128790A1 Optical focussing device
08/03/1982CA1128749A1 Medium for recording information
07/1982
07/28/1982EP0056712A2 Information read apparatus with tracking control system
07/28/1982EP0056683A1 Optical playback apparatus, focusing elements, and focusing system for producing a prescribed energy distribution along an axial focal zone
07/27/1982US4341469 Laser shadowgraph
07/27/1982CA1128659A1 Ablative optical recording medium
07/20/1982US4340959 Optical recording medium with a thick overcoat
07/20/1982US4340950 Video disc player
07/20/1982US4340894 Laser beam recording system
07/20/1982US4340655 Thermal and mechanical barrier layers for optical recording elements
07/20/1982CA1127945A1 Optical disc
07/13/1982US4339513 Radiation transparent resin, tetrazine compound
07/13/1982CA1127758A1 Apparatus for correcting for variations in the spectral response of a video playback system
07/13/1982CA1127757A1 Optical information recording apparatus
07/07/1982EP0055646A2 Device for optically accessing a track on a movable information carrier
07/07/1982EP0055645A2 Optical pick-up device of a record carrier
07/07/1982EP0055439A1 Optical disks and recording and reproducing system using the same
07/06/1982US4338684 Scanning system for reproducing side-by-side optical sound tracks
07/06/1982US4338682 Tracking servo system of video disc player
07/06/1982US4338629 Process and apparatus for coding binary signals for numbering images or pictures stored on a recording medium for stop mode reproduction
06/1982
06/30/1982EP0054771A1 Digital formatting system
06/29/1982US4337535 Device for preventing unwanted reflections from an optical system to a laser in an apparatus for optically reading a record carrier
1 ... 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028