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)
09/1997
09/09/1997US5666220 Optical scanner and polygon mirror
09/09/1997US5666197 Apparatus and methods employing phase control and analysis of evanescent illumination for imaging and metrology of subwavelength lateral surface topography
09/09/1997US5666185 Method for recording a digital audio signal on a motion picture film
09/09/1997US5665957 Lens device comprising light blocking means and an optical pickup apparatus using the lens device
09/09/1997US5665520 Optical recording medium
09/09/1997US5665493 Gated recording of holograms using rare-earth doped ferroelectric materials
09/04/1997WO1997032304A1 Method of designing a phase-change optical recording medium, and a phase-change optical recording medium
09/04/1997WO1997032303A1 Optical reproduction method and optical information apparatus
09/04/1997WO1997032182A1 Method and apparatus for performing optical measurements using a fiber optic imaging guidewire, catheter or endoscope
09/04/1997DE19708278A1 Compact disk copying system
09/04/1997DE19642346A1 Optical head for optical disc systems
09/03/1997EP0793234A2 Recording/reproducing apparatus and method
09/03/1997EP0793233A2 Information record medium, apparatus for recording the same and apparatus for reproducing the same
09/03/1997EP0793232A2 Information record medium, apparatus for recording the same and apparatus for reproducing the same
09/03/1997EP0793224A1 Disk bonding system
09/03/1997EP0793223A1 Optical information recording medium
09/03/1997EP0793222A2 Optical apparatus
09/03/1997EP0793221A1 Optical recording method
09/03/1997EP0793220A2 Optical data recording/reproducing apparatus
09/03/1997EP0792504A1 Transferring information via the lead-in area of an information carrier
09/03/1997EP0615635B1 Control method and circuit
09/03/1997EP0547218B1 Audio record carrier and players for playing said record carrier
09/03/1997EP0460764B1 Method of transmitting a picture sequence of a full-motion video scene, and a medium for said transmission
09/03/1997EP0460751B1 Method of transmitting audio and/or video signals
09/03/1997CN1158481A Record medium with managed digest portions programs, reproducing apparatus thereof, and reproducing method thereof
09/03/1997CN1158478A Reproducing and recording optical pickup compatible for discs having different thicknesses
09/03/1997CN1158477A Optical pickup apparatus for different discs
09/03/1997CN1158476A Optical pickup apparatus
09/03/1997CN1158475A Checking device for flatness of drive chassis of disc player
09/03/1997CN1035792C Optical disc, device for checking optical disc and device for recording information on optical disc
09/02/1997US5664046 Autoconfigurable video system
09/02/1997US5663946 Optical disc having buffering areas capable of storing a pattern for obtaining tracking error signals and recording and/or reproducing apparatus therefor
09/02/1997US5663945 Digital phase locked loop with a digital voltage controlled oscillator in a recording information reproducing apparatus
09/02/1997US5663944 Vertical cavity laser light beam monitored by reflection of a half mirror, with application in optical pick-up
09/02/1997US5663942 Jitter measurement apparatus detecting amplitude of phase errors between information signal and synchronized clock signal
09/02/1997US5663941 Optical disk recording device with laser power control capable of recording at various recording speeds
09/02/1997US5663940 Optical pickup apparatus including hologram element
09/02/1997US5663939 Optical data recording and reproducing apparatus including non-circular beam spot
09/02/1997US5663843 Optical system driving apparatus
09/02/1997US5663841 Optical pickup device having a magnetic circuit whose poles are configured along a common path within one pole within a focus coil
09/02/1997US5663840 Objective lens actuator for optical head and used for high speed access
09/02/1997US5663326 Mixtures of isomeric substituted phthalocyanines, and process for their preparation
09/02/1997US5663211 Ultraviolet curing resin having low primary irritation index for optical disk
09/02/1997US5663016 All-polymeric phase shift masks
09/02/1997US5662979 Substrate for optical disc
09/02/1997US5662785 Method for masking a workpiece and a vacuum treatment facility
08/1997
08/28/1997WO1997031373A1 Magneto-optical recording medium on which information is recorded by optical super-resolution method, and recording/reproducing apparatus for the same medium
08/28/1997WO1997031372A1 Polymer layer for optical media
08/28/1997WO1997031371A1 Optical pickup and optical element used therefor
08/28/1997WO1997031123A1 Vmp-like sequences of pathogenic borrelia
08/27/1997EP0792016A1 Signal-processing preamplifier for optical disc system
08/27/1997EP0791924A2 Method and apparatus for reducing phase lag resulting from digital to analog conversion
08/27/1997EP0612457B1 Bidirectional sinusoidal scanning system
08/27/1997CN1157982A Optical pickup device
08/27/1997CN1157972A Optically machine-readable information carrier
08/26/1997US5661800 Method and manufacture for preventing unauthorized use by judging the corresponding relationship between logical and physical addresses
08/26/1997US5661715 Mass produced multisessions disc for playback on audio-only and CD-ROM players
08/26/1997US5661713 Optical information reproducing apparatus with a threshold level generator to eliminate DC level fluctuation
08/26/1997US5661712 Light phase modulating device and optical data recording and reproducing apparatus
08/26/1997US5661711 Optical recording and reproducing apparatus
08/26/1997US5661710 Record carrier, recording device and reading device
08/26/1997US5661709 Digital signal detection circuit
08/26/1997US5661707 Method and apparatus for recording an information signal with scrambling thereof
08/26/1997US5661706 Recording and reproducing apparatus and recording and reproducing method providing real time editing while data is being input
08/26/1997US5661705 Optical disk pickup control apparatus and method providing stabilized search operations
08/26/1997US5661704 Optical unit for optically scanning an information surface, and optical scanning arrangement including the optical unit
08/26/1997US5661703 Optical recording medium having a non-volatile identification code and method for encoding data using same
08/26/1997US5661702 Compact disc visual/audio display system
08/26/1997US5661701 Optical pickup using split beams impinging on different photodetector areas
08/26/1997US5661607 Lens for reading out optical recording medium
08/26/1997US5661577 Incoherent/coherent double angularly multiplexed volume holographic optical elements
08/26/1997US5660958 Increased modulation, improved contrast, responsiveness
08/26/1997US5660474 Temperature detecting circuit generating an output signal according to the temperature
08/26/1997CA2066202C Power-modulated laser devices
08/21/1997WO1997030444A1 Method and device for recording an optical information carrier
08/21/1997WO1997030440A2 Method and device for recording at different writing speeds on an optical information carrier
08/21/1997WO1997030439A2 Device for recording an information carrier, method and information carrier therefor
08/21/1997WO1997030119A1 Non-birefringent optical resin composition and optical element made by using the same
08/21/1997DE19638747C1 Glass master manufacturing process for CD or CD-ROM
08/20/1997EP0790613A2 Recording and playback device and method for a disk with a plurality of zones of constant angular velocity
08/20/1997EP0790608A1 Method of developing an adhesive and a rotary holding table for carrying out the same method
08/20/1997EP0790607A1 Photodetector used for optical head
08/20/1997EP0790606A2 Optical storage apparatus
08/20/1997EP0790605A2 Optical storage apparatus
08/20/1997EP0790604A2 Reproduction device for optical disks
08/20/1997EP0790603A1 Method and apparatus for initializing optical recording medium
08/20/1997EP0790533A2 Process and apparatus for surface cleaning
08/20/1997EP0790331A1 Apparatus for gripping and holding of substrates
08/20/1997EP0790327A1 Deposition-preventing part for physical vapor deposition apparatuses
08/20/1997EP0790278A1 Structural material, molding made therefrom, and method of degradation of these
08/20/1997EP0789907A1 Optical focus control system
08/20/1997CN1157631A Liquid-crystalline glasses
08/20/1997CN1157455A Head device
08/20/1997CN1157454A CD rom head with vcsel or vcsel array
08/19/1997US5659536 Optical storage method and device for storing and reading digital information
08/19/1997US5659535 Method for retrieving data from a storage device
08/19/1997US5659534 Apparatus for reproducing optical information contained disks of various recording densities
08/19/1997US5659533 Method of using a single pick-up head to read and store data on discs of different thicknesses and structure of a pick-up head apparatus therefor
08/19/1997US5659532 Optical scanning apparatus with polygon mirrors reflecting light beam at a constant speed larger than dθ/dt
08/19/1997US5659531 Birefringent diffraction grating polarizer