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)
07/1996
07/24/1996EP0723216A2 Compact disc player security system reproducing method and apparatus
07/24/1996CN1127556A Device for raising the frequency of electromagnetic radiation
07/24/1996CN1127408A Apparatus for adjusting reproduction speed of laser disc player
07/24/1996CN1127406A Optically readable thin film digital data storage medium and playback adaptor
07/23/1996US5539724 Optical disk having wobbled, discontinuous grooves
07/23/1996US5539723 Method, apparatus, and medium for recording information in data sections having number of bytes which increase in circumference of tracks on medium
07/23/1996US5539722 Optical information reproducing system with a reading beam having frequency components of N wavelengths corresponding to four times the N depths to a row of pits
07/23/1996US5539721 Reducing the recording power based on the timing of recorded synchronization signal
07/23/1996US5539720 Method and apparatus for driving light source by stored current value and for processing information
07/23/1996US5539718 Optical head for controlling light irradiation in a magneto-optical recording and/or reproducing apparatus
07/23/1996US5539717 Player for reproducing both minidisc and compact disc
07/23/1996US5539716 Optical recording disc with compressed audio PCM data interleaved with video data
07/23/1996US5539711 Optical disc drive apparatus
07/23/1996US5539710 Video optical disk system compatible with both read only and writable optical disks having the same recording format
07/23/1996US5539239 Semiconductor light emitting element with II-VI and III-V compounds
07/23/1996US5539197 Scanning near-field optical microscope having a medium denser than air in the gap between the probe chip and the sample being measured
07/23/1996US5538774 Internally damped rotatable storage article
07/23/1996US5538773 Optical recording medium and the reproducing apparatus for the optical recording medium
07/19/1996CA2165647A1 Optically readable thin film digital data storage medium and play-back adaptor
07/18/1996WO1996021928A1 Semi-permanent enclosure for optical data storage device
07/18/1996CA2288403A1 Semi-permanent enclosure for optical data storage device
07/17/1996EP0722167A1 Optical pickup apparatus
07/17/1996EP0722166A1 Recording information on an optical disc without using pre-manufactured tracks
07/17/1996EP0721642A1 Method of manufacturing a web-like intermediate information carrier and arrangement for cutting said carrier to tape-like information carriers
07/17/1996EP0721602A1 Retardation layer having a dispersion adapted to the active liquid-crystalline cell
07/17/1996CN1127049A Method and apparatus for preventing illegal copying and illegal installation of information on optical recording medium
07/17/1996CN1126875A Disc player
07/17/1996CN1126871A Optical pickup device for magneto-optical disc reproducing system
07/16/1996US5537636 File management system for a partially rewritable storage medium where file management information is created in a rewritable zone based on medium management information in a read only zone
07/16/1996US5537617 Multi-channel optical head and data storage system
07/16/1996US5537578 Transparent driving partition for processing logical volumes to be recorded onto optical media
07/16/1996US5537387 Information storage disk with display data recorded in a lead-in region and an apparatus for recording and/reproducing the disc
07/16/1996US5537386 Tracking and focusing servo driven by comparison of direct current signals rectified from detectors
07/16/1996US5537385 Reading multiple tracks data with a microscope scanner and a two mirror light beam focus unit
07/16/1996US5537384 Focus error detector
07/16/1996US5537383 Optical data storage system with differential data detection and source noise subtraction for use with magneto-optic, write-once and other optical media
07/16/1996US5537382 Partial response coding for a multi-level optical recording channel
07/16/1996US5537381 Test-writing recording control method and test-writing recording control apparatus and optical recording medium
07/16/1996US5537379 Optical data storage and retrieval system and method
07/16/1996US5537374 Optical recording medium and recording and/or reproducing apparatus using such optical recording medium
07/16/1996US5537373 Optical disk recording and reproducing apparatus with data recorded on wobbled grooves and lands
07/16/1996US5537370 Magnetooptical-disk recording and/or reproducing apparatus for a 5.25 inch large capacity magnetooptical-disk
07/16/1996US5536548 Phthalocyanine dye and a second dye with a lower heat decomposition temperature
07/16/1996US5536456 Optical disc and method for making
07/16/1996CA2098216C Information reproducing apparatus
07/16/1996CA2044426C Information recording and reproducing device
07/11/1996WO1996021223A1 Improved digital optical compact disc and compact disc player
07/11/1996WO1996021222A1 Three-dimensional optical data storage and retrieval
07/10/1996EP0721182A1 Optical information storage system
07/10/1996EP0721124A2 Objective lens and optical head apparatus using the objective lens
07/10/1996CN1126352A Optical pickup apparatus
07/10/1996CN1126351A Electric level predeterming circuit
07/10/1996CN1126350A Objective lens actuating device, optical pickup employing the objective lens actuating device and optical disc recording and/or reproducing apparatus employing such optical pickup
07/10/1996CN1032276C 光学扫描装置 Optical scanning means
07/09/1996US5535189 Optical information system with a broad non-coherent irradiating beam coupled with optical fiber from a laser source
07/09/1996US5535186 Disc recording/reproducing system
07/09/1996US5535183 Optical disk reproducing device and its seek operation method
07/09/1996US5535182 Optical disk apparatus and recording/reproduction method therefor
07/09/1996US5535179 Magneto-optic disc apparatus with signal detector for detecting recorded signals based on split beams
07/09/1996US5535059 Objective lens drive device and coil bobbin thereof
07/09/1996US5535058 Focus error detecting element and optical head using the same
07/09/1996US5535055 Optical head device and birefringent diffraction grating polarizer and polarizing hologram element used therein
07/09/1996US5535023 Method of reading hologram information
07/09/1996US5535018 Information processing apparatus
07/09/1996US5534758 Optical disk drive circuit and optical disk drive device using the same
07/09/1996US5534385 Overcoat for optical tape having SbInSn recording layer
07/09/1996US5534322 Recording medium
07/09/1996CA2100047C Light-intensity control device for an optical-disk recording-reproduction apparatus
07/09/1996CA2039522C Compact disk-write once type optical recording media
07/04/1996WO1996020521A1 Laser power supply circuit as well as optical recording and/or reading device comprising such a laser power supply circuit
07/04/1996WO1996020473A1 Optical pickup device
07/04/1996WO1996020472A2 System and method for encoding a servo address
07/03/1996EP0720378A2 Data reproducing method and apparatus
07/03/1996EP0720160A1 Optical disk with pits formed by stamper and method for fabricating the same
07/03/1996EP0720159A2 Optical recording medium having dual information surfaces
07/03/1996EP0720158A2 Objective lens drive apparatus
07/03/1996EP0720157A2 Video compact disc drive
07/03/1996EP0719839A2 Phthalocyanine compounds and optical recording media comprising them
07/03/1996EP0637398B1 Device for the optical scanning of a recording medium, especially a phosphor storage plate
07/03/1996EP0524315B1 Method for reproducing signal in optically recording medium
07/03/1996CN1125884A Tracking control apparatus and optical pickup having the same
07/03/1996CN1125655A Metal mold device for molding a disc substrate and method for fabrication of disc substrate
07/02/1996US5533042 Semiconductor laser device and driving method for the same as well as tracking servo system employing the same
07/02/1996US5533003 Recording device capable of detecting the change in length and position of the pit edge
07/02/1996US5533002 Optical data storage compact disc and method for manufacturing the same
07/02/1996US5533001 Magneto-optical disk system with specified thickness for protective layer relative to the numerical aperture of the objective lens
07/02/1996US5532999 Optical detector having stray carrier absorption regions between light receiving elements, and an optical head using the same
07/02/1996US5532998 Optical spectroscopic information storage
07/02/1996US5532997 Optical tracking system
07/02/1996US5532992 Recording and reproducing method for writable type disk driving apparatus
07/02/1996US5532991 Recording and/or reproducing apparatus and method of controlling same
07/02/1996US5532990 Optical information processing method and apparatus including measuring and correcting the offset of a tracking error signal from an output of a photodetector using a vibrating objective lens
07/02/1996US5532989 For controlling the position of a lens
07/02/1996US5532988 Tracking apparatus for sampled servo system which performs tracking control using signals identifying tracks as even or odd numbered
07/02/1996US5532987 Focus error detecting device
07/02/1996US5532952 Selectively alterable optical data memory
07/02/1996US5532884 Apparatus and method for fabricating a deflection mirror tower
07/02/1996US5532477 Optical pickup apparatus having lens group for determining paths of an incident beam and a reflected & beam
07/02/1996US5532342 Optical recording
07/02/1996US5532286 Thioether acrylate containing photopolymerizable compositions