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)
07/1985
07/02/1985CA1189968A1 Device for optical recording and read-out of data along a prerecorded track
06/1985
06/26/1985EP0146178A1 Single lens having one aspherical surface
06/26/1985EP0146109A2 Optical information recording apparatus
06/26/1985EP0145789A1 Disc-shaped recording medium
06/26/1985EP0145787A1 Apparatus for controlling tracking of recorded disc reproduction device
06/26/1985EP0145757A1 Optical recording structure involving in situ chemical reaction in the active structure
06/26/1985EP0145756A1 Coarse position error signal generation in an optical disk storage system employing coarse servo tracks
06/26/1985EP0145755A1 Amplitude modulated coarse position error signal generation in an optical disk storage system employing coarse servo tracks
06/26/1985EP0145751A1 A system and method for organizing and managing data stored on an informational disk
06/26/1985EP0044840B1 Information carrying discs
06/25/1985US4525839 Method of controlling storage device
06/25/1985US4525829 Optical disk assembly retaining rings
06/25/1985US4525828 Optical magnetic recording device
06/25/1985US4525826 Optical track position detecting apparatus and optical information processor using the same
06/25/1985US4525825 Method and apparatus for detecting focussing and tracking error signals
06/25/1985US4525824 Information recording system
06/25/1985US4525823 Optical tracking system
06/25/1985US4525822 Optical data recordation and reproduction system
06/25/1985US4525625 Focussing control with astigmatic diffracting means
06/25/1985US4525412 Information recording medium
06/25/1985US4525040 Lens system for optical recording type disks
06/25/1985US4524925 Optical data tape cartridge having wide angle read/write surface
06/25/1985CA1189618A1 Optical focussing-error detection array
06/19/1985EP0145344A1 Optical memory disc
06/19/1985EP0145296A2 Calibration network for a feedback lighht detector and a method of calibrating feedback output therefrom
06/19/1985EP0145279A2 Optical data storage
06/19/1985EP0145051A2 Disc holder for a rigid optically readable disc
06/19/1985EP0144831A2 Apparatus arrangement for the determination of errors on disk-shaped record carriers
06/19/1985EP0144813A1 Recording and reproducing apparatus
06/19/1985EP0144705A2 Optical recording medium and process for producing the same
06/19/1985EP0144445A1 Apparatus for driving objective lens of optical disc player
06/19/1985EP0144436A1 Optical recording and reproducing apparatus
06/18/1985US4524369 Plastic information-recording medium
06/18/1985CA1189190A1 Radial access drive for an optical disk recorder
06/12/1985EP0144210A2 Cost-reduced optical disk record
06/12/1985EP0144058A2 Apparatus for optically writing information
06/12/1985EP0143992A1 Optical information recording medium
06/11/1985US4523304 Optical data recording and reproducing apparatus
06/11/1985US4523089 Driving apparatus for semiconductor laser
06/11/1985US4522862 Layer packs comprising a filter
06/11/1985US4522846 Spiral-coated media for optical recording
06/11/1985CA1188802A1 Method of information recording on a semiconductor wafer
06/11/1985CA1188801A1 Modulation system for optical recording
06/11/1985CA1188800A1 Apparatus for reading an optically readable information structure on a record carrier
06/11/1985CA1188799A1 Optical recording device
06/11/1985CA1188798A1 Circuit arrangement for converting an information signal into a rectangular signal
06/11/1985CA1188797A1 Opto-electronic apparatus for inscribing and/or reading recording tracks by means of a radiation beam
06/10/1985EP0128949A4 Coated media for optical recording and associated coating techniques.
06/10/1985EP0128948A4 Coated media for optical recording, associated acrylic coatings and related application methods.
06/10/1985EP0128219A4 Coated media for optical recording, with "soft/hard" overcoat.
06/06/1985WO1985002482A1 Cost-reduced optical disk record
06/06/1985WO1985002481A1 Disk-shaped recording medium and apparatus for reproducing the same
06/06/1985EP0126155A4 Coated media for optical recording and method of fabricating.
06/05/1985EP0143483A1 Electro-optical device
06/05/1985EP0143474A1 Apparatus for reading an optically readable record carrier
06/05/1985EP0143356A2 Optical system drive for optical recording/reproducing apparatus
06/04/1985US4521876 Focusing state monitoring apparatus in optical recording apparatus
06/04/1985US4521680 System for focusing a light beam on a light reflecting surface
05/1985
05/29/1985EP0142978A2 Polymer-coated information storage device
05/29/1985EP0142968A2 Optical recording medium and method of producing same
05/29/1985EP0142927A2 Optical disc
05/29/1985EP0142579A1 Recording apparatus
05/28/1985US4520472 Beam expansion and relay optics for laser diode array
05/28/1985US4520471 Multi-channel recording/playback optics for laser diode arrays
05/28/1985US4520469 Tracking servo system for optical-disc information reproducing apparatus
05/23/1985WO1985002291A1 Data storage medium
05/23/1985WO1985002290A1 Optical data storage
05/23/1985WO1985002284A1 Machine readable markers for cartesian information storage media
05/22/1985EP0142367A2 Process for forming a polymeric layer on a substrate
05/22/1985EP0141880A1 Recording apparatus
05/21/1985US4519065 Thermoplastic, radiation-curable polymer, embossable metal layer
05/21/1985US4519064 Optical record disc
05/21/1985US4519061 Sealed optical disk unit, apparatus and method for debris-suppressed recording
05/21/1985US4519058 Optical disc player
05/21/1985US4519057 Digital audio disc player including apparatus for finding the beginning of a recorded audio signal
05/21/1985US4519056 Optical disk apparatus
05/21/1985US4519054 Method for formatting optically encoded digital data on a substrate and the data record carrier formed thereby
05/21/1985US4519007 Servo-track position detection systems
05/21/1985US4519004 Extended play videodisc
05/21/1985CA1187607A1 Information carrier disk with angular coding means and a system for driving said disk in rotation
05/21/1985CA1187606A1 Electro-optical apparatus
05/21/1985CA1187605A1 Technique for monitoring galvo angle
05/21/1985CA1187604A1 Swing-arm device for an optical scanning unit
05/15/1985EP0141512A1 A liquid crystal information storage device
05/15/1985EP0141396A2 Access device for positioning a light beam to a desired guide groove of an optical memory apparatus
05/15/1985EP0141337A2 Apparatus for scanning sheet-shaped recording medium
05/14/1985US4517668 Optical disk with narrow guide tracks
05/14/1985US4517667 Direct read after write optical disk system
05/14/1985US4517666 Optical head
05/14/1985US4517658 Picture information filing system for permanently storing portions of previously permanently stored data logically combining the portions
05/14/1985US4517574 For recording information
05/14/1985CA1186926A1 Beam-splitting prism
05/08/1985EP0140411A1 Bar code reading device
05/08/1985EP0140215A2 Tracking system for marking angle errors of the tangent during optical reproduction of a disc
05/08/1985EP0139757A1 Apparatus for reproducing data signal
05/08/1985EP0139722A1 Center supported actuator carriage assembly
05/07/1985US4516242 For use in a semiconductor laser system
05/07/1985US4516235 In a data processing system
05/07/1985US4516234 Optical recording system
05/07/1985US4516231 Optical disc system having momentum compensation
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