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)
08/1993
08/24/1993US5239531 Optical information recording method using modulated optical beam
08/24/1993US5239530 Method and apparatus for detecting a track count in an optical disk apparatus for recording/reproducing data on/from an optical disk
08/24/1993US5239529 Multiple beam optical disk apparatus with multiple clock extracting circuits used for monitoring and cross fading
08/24/1993US5239528 Optical head control circuit for optical tape recording/reproducing apparatus
08/24/1993US5239526 Data recording/reproducing apparatus of spiral trade system with kick back control
08/24/1993US5239414 Laser astigmatism compensation
08/24/1993US5238786 Method for manufacturing high recording density optical disk
08/24/1993US5238723 Optical recording medium
08/24/1993US5238722 Optical recording medium
08/24/1993US5238500 Aqueous hydrofluoric and hydrochloric acid vapor processing of semiconductor wafers
08/19/1993WO1993016476A1 Optical memory
08/19/1993WO1993016469A1 Phase varying device, and optical pickup apparatus using the same for magneto-optical storage
08/19/1993WO1993016468A1 Information recording medium, and recording and reproducing device therefor
08/19/1993WO1993016467A1 Data recording medium, data recording apparatus, data reproducing apparatus and data recording/reproducing apparatus
08/19/1993DE4304267A1 Recording information on optical disc memories - using sectors structured with pre-formulated range followed by data region having blocks of data and synchronising signals
08/19/1993CA2130345A1 Optical memory
08/19/1993CA2108457A1 Information recording medium, information recording apparatus, information reproducing apparatus and information recording and reproducing apparatus
08/19/1993CA2108359A1 Information recording medium and a recording apparatus and a reproducing apparatus therefor
08/18/1993EP0556062A1 Light source unit and optical head equipped therewith
08/18/1993EP0556046A1 Recording and reproducing apparatus for optical disk
08/18/1993EP0556000A1 Differential amplifier for an optical storage system
08/18/1993EP0555943A2 Optical distance detector
08/18/1993EP0555941A2 Recording device and reproducing device
08/18/1993EP0555872A2 Optical apparatus for emitting light and automatic adjustment apparatus therefor
08/18/1993EP0555865A2 A servo tracking circuit for an optical disk apparatus
08/18/1993EP0555793A1 Polarization dependent writing and erasing process for organic optical media
08/18/1993EP0555583A1 Method for manufacturing optical discs
08/18/1993EP0555486A1 Hub for optical recording medium and optical recording medium
08/18/1993EP0363452B1 Optical storage devices
08/17/1993US5237559 Reproduction of sound track signals by varying the detector threshold level as a function of the transverse scan position
08/17/1993US5237558 Laser drive circuit for optical disk recording/reproducing
08/17/1993US5237557 Optical head having improved reflecting assembly
08/17/1993US5237556 Wide beam detector system for optical memories
08/17/1993US5237554 Apparatus for generating clock signals for data reproduction
08/17/1993US5237553 Data recording and reproducing apparatus having a plurality of operating modes
08/17/1993US5237551 Apparatus measuring an output of a disk drive
08/17/1993US5237550 Reloadable optical recording/reproducing apparatus
08/17/1993US5237549 Magneto-optical disk storage device having optical head applicable to different types of magneto-optical disks
08/17/1993US5237547 Multi-head magneto-optical disk apparatus
08/17/1993US5237457 Apparatus for adjusting an optical axis including a laser beam source and a beam shaping prism
08/17/1993US5237011 Compatible polymer mixtures of polystyrene and polycyclopentyl (meth)acrylate
08/17/1993US5236755 Optical recording elements
08/17/1993US5236633 Plate and sheet comprising near infrared absorbing composition
08/17/1993US5235995 Semiconductor processor apparatus with dynamic wafer vapor treatment and particulate volatilization
08/11/1993EP0555097A1 An optical information reproducing apparatus
08/11/1993EP0555065A2 Data storage device for data storage system
08/11/1993EP0555037A1 Magneto-optical information recording/reproducing apparatus
08/11/1993EP0555031A2 Recording and reproducing apparatus
08/11/1993EP0555021A1 Optical storage
08/11/1993EP0554885A2 Optical disk substrate and optical disk using the same
08/11/1993EP0554627A1 Aminium salt compound and optical recording medium
08/11/1993EP0461132B1 Circuit arrangement for reversing a magnetic field
08/11/1993CN1075230A Format for data-storing disk media wherein address able track angular length is independent of disk revolutions
08/11/1993CN1021785C Resin composition for spacers of information recording disc
08/10/1993US5235591 Stack type optical disc apparatus, sealed and separate type optical head therefor and optical disc medium
08/10/1993US5235589 Apparatus for recording and reproducing optical information and prism coupler
08/10/1993US5235587 Optical data storage apparatus and method
08/10/1993US5235586 Computer system utilizing compact intelligent disks
08/10/1993US5235584 Apparatus for detecting a position of a light spot on an optical disc
08/10/1993US5235583 Optical scanning for record carriers adapted for reading with differing wavelengths
08/10/1993US5235582 Photochromic optical disk read/write apparatus which prevents deterioration of the stored information during tracking and reading
08/10/1993US5235581 Optical recording/reproducing apparatus for optical disks with various disk substrate thicknesses
08/10/1993US5235580 Optical information recording-reproducing apparatus provided with a plurality of sample hold circuits
08/10/1993US5235577 Information recording and/or reproducing apparatus for timing switching of a jumping pulse from an intermittently detected tracking signal
08/10/1993US5235576 Optical disc apparatus
08/10/1993US5235575 Apparatus and method for successive reproducing in an optical disc recording/reproducing system
08/10/1993US5235574 Optical disk drive relative position sensor
08/10/1993US5235573 Repositioning laser beams in information storage media
08/10/1993US5235572 Optical disc accessing apparatus
08/10/1993US5235570 Magneto-optic readout method and apparatus using polarization switching of readout beam
08/10/1993US5234803 Optical recording media
08/10/1993US5234799 Photochromic material and rewritable optical recording medium
08/10/1993US5234797 Optical recording medium
08/10/1993US5234792 Optical data recording medium and manufacturing method thereof
08/10/1993US5234737 Protective layer on light incident side to prevent thermal deformation; refractive index equal to or lower than that of substrate; high in recording sensitivity
08/10/1993US5234717 Forming coating film on substrate, pressing a mold against film, heating, baking
08/10/1993US5234633 Cast molding die and process for producing information recording medium using the same
08/10/1993US5234556 Irradiating a metalalkoxide solution to break the metal-alkoxy group bond; forming metal oxide prepolymer
08/05/1993WO1993015504A1 Card-form optical recording medium
08/04/1993EP0554092A1 An optical information recording and reproducing device
08/04/1993EP0554087A2 Optical disc apparatus
08/04/1993EP0553938A2 Recording device and reproducing device
08/04/1993EP0553937A2 Recording device and reproducing device
08/04/1993EP0553816A2 Disc shaped recording medium and address discrimination circuit for disc-shaped recording medium
08/04/1993EP0553730A2 Digital recording and reproducing apparatus
08/04/1993EP0553664A2 Optical disk apparatus
08/04/1993EP0553573A1 Optical disc, optical disc reproducing apparatus and recording and reproducing method therefor
08/04/1993EP0553551A2 Optical disk apparatus having a reduced size
08/04/1993EP0553548A1 Optical disk and optical disk reproducing apparatus
08/04/1993EP0553545A2 CD-ROM disk and security check method for the same
08/04/1993EP0553541A1 Optical disk and optical disk reproducing apparatus
08/04/1993EP0553530A2 Information recording/reproducing apparatus using an optical recording medium
08/04/1993EP0454740B1 Optical scanning device
08/04/1993EP0311691B1 Optical recording/reproducing apparatus
08/04/1993CN1075014A Device in which electromagnetic radiation is raised in frequency and apparatus for optically scanning an information plane, comprising such a device
08/03/1993US5233673 Output steerable optical phased array
08/03/1993US5233599 Optical disk with a recording layer composed of tellurium, antimony, and germanium
08/03/1993US5233598 Information recording medium having a plurality of information tracks arranged in a predetermined rectilinear direction
08/03/1993US5233596 Optical recording/reproducing apparatus including both automatic power control and temperature-based drive current control
08/03/1993US5233595 Optical pickup including waveguide light intensity detection means for controlling a position/intensity of a semiconductor laser