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