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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05/25/1994 | EP0598633A1 Handling and processing system for workpieces in individual boxes |
05/25/1994 | EP0598611A2 Optical recording and reproducing apparatus |
05/25/1994 | EP0598594A2 Disk drive system controller |
05/25/1994 | EP0598592A2 Laser emission unit, optical head and optical memory device |
05/25/1994 | EP0598575A2 Optical recording medium and production thereof |
05/25/1994 | EP0598392A1 Digital audio signal transforming method and apparatus |
05/25/1994 | EP0598377A2 Magneto-optical recording medium and optical information recording and reading-out method |
05/25/1994 | EP0598096A1 Recording media. |
05/25/1994 | EP0318566B2 Optical scanning head |
05/24/1994 | US5315579 Recording disk hub bond |
05/24/1994 | US5315577 Optical recording/reproducing by changing perpendicular magnetic anisotropy to non-perpendicular magnetic anisotropy |
05/24/1994 | US5315576 Optical pick-up device for optical disc player |
05/24/1994 | US5315575 Optical information recording apparatus |
05/24/1994 | US5315574 Optical head with polarized beam hologram |
05/24/1994 | US5315573 Non-linear optical saturable absorber layer in an optical disk to discriminate wavelength above or below a threshold level of intensity |
05/24/1994 | US5315572 Information reproducing apparatus capable of eliminating jitters |
05/24/1994 | US5315571 Information recording and reproducing device providing faster access time to a recording medium |
05/24/1994 | US5315570 Optical disk reproducing apparatus which automatically determines the format type of the optical disk |
05/24/1994 | US5315569 Apparatus for recording and/or reproducing information on/from optical card-like information recording medium |
05/24/1994 | US5315568 Apparatus and method for accessing sectors of a rotating disk |
05/24/1994 | US5315567 Optical disk formatting system using index mark detecting circuit |
05/24/1994 | US5314757 Information recording media |
05/24/1994 | US5314734 Recording due to change in atomic arrangement upon irradiation with a laser beam |
05/24/1994 | US5313882 Multicolor printing system for the silk-screen printing of compact discs |
05/24/1994 | CA2102688A1 Method for removing coatings from compact discs |
05/24/1994 | CA2011377C Beam track position control apparatus for optical disk apparatus |
05/18/1994 | EP0597826A2 Data recording medium |
05/18/1994 | EP0597705A1 Optical encoder |
05/18/1994 | EP0597697A1 Tracking servo circuits |
05/18/1994 | EP0597656A2 Optical data storage system and method |
05/18/1994 | EP0597483A1 Disc playback method |
05/18/1994 | EP0597339A1 Disc recording/reproducing apparatus |
05/18/1994 | EP0597202A1 Optical pickup head apparatus |
05/18/1994 | EP0215839B1 Efficient holograms and method for making same |
05/18/1994 | CN1024603C Information recording system and recording device and record carrier |
05/17/1994 | US5313612 Information recording and reproducing apparatus including both data and work optical disk drives for restoring data and commands after a malfunction |
05/17/1994 | US5313452 Optical recording disk |
05/17/1994 | US5313450 Optical disk drive |
05/17/1994 | US5313449 Optical recording medium and method of optically playing back same including recording medium structure operating as optical resonators emitting applied pumping light at a variable frequency |
05/17/1994 | US5313448 Laser device driven by a periodic waveform optimized for reducing laser noise |
05/17/1994 | US5313447 Optical head |
05/17/1994 | US5313445 Reproducing apparatus with suspension supporting a floating-type head with a bevelled slider |
05/17/1994 | US5313442 Optical disk drive having tracking control and mirror supported on a circular path |
05/17/1994 | US5313441 Optical recording and reproducing apparatus having a pickup head including a main prism with reflecting surfaces for splitting the reflected beam |
05/17/1994 | US5313440 Track crossing method using dual counters |
05/17/1994 | US5313334 Objective lens moving actuator |
05/17/1994 | US5313332 Flexure suspension for two axis actuator |
05/17/1994 | US5313321 Optically switching ferroelectric liquid crystal light valve having a pre-tilt angle of 60 to 80 degrees |
05/17/1994 | US5313011 Apparatus for carrying out automatic play in synchronism with playback of data recorded on recording medium |
05/17/1994 | US5312906 Disazo dyes |
05/17/1994 | US5312718 Method of manufacturing dies for pressing optical disks |
05/17/1994 | US5312714 Multilayer element with substrate, adhesive of ethylene and acrylic derivative copolymer for laminate |
05/17/1994 | US5312713 Decoloring reaction of oxo metallic phthalocyanine pigment and pyrolysis |
05/17/1994 | US5312664 Films of antimony/tin alloys containing carbon and hydrogen; higher amorphous to crystalline transition temperature, stability |
05/17/1994 | US5312663 A disk comprising a supports laminated with multilayer of a recording layer, a reflective layer and two protective layers having good adhesion |
05/17/1994 | CA1329507C Etched glass and process of manufacturing same |
05/11/1994 | WO1994010684A1 Optically readable information disc including visible ornamental hologram, and method of fabricating same |
05/11/1994 | EP0596716A2 Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium |
05/11/1994 | EP0596501A2 Tracking method for an optical disk |
05/11/1994 | EP0596439A2 Method of making a master disc usable for the production of optical discs |
05/11/1994 | EP0596417A2 Memory controller, reproducing apparatus, mounting the same and method for controlling the same |
05/11/1994 | EP0596413A2 Method of making a plurality of optical record disc substrates, and an apparatus therefore |
05/11/1994 | EP0596339A1 Optical recording medium |
05/11/1994 | EP0596139A1 Optical disk recorder/reproducer |
05/11/1994 | EP0595999A1 Method for three-dimensional optical storage and retrieval of data |
05/11/1994 | EP0278006B1 A disc device and a disc-like recording medium |
05/11/1994 | DE4234926A1 Audio and/or video recording system with special effects facility |
05/10/1994 | US5311500 Alkyl fluoride-acrylic copolymer moisture barrier |
05/10/1994 | US5311499 Method and apparatus for erasing information from optical recording tape with a thermo-deforming layer |
05/10/1994 | US5311498 Recording and reproducing apparatus provided in each data block with a secret information number |
05/10/1994 | US5311497 Pickup feeding apparatus for a double-sided reproducing disc player |
05/10/1994 | US5311496 Achromatic expansion prism for magneto-optical drive |
05/10/1994 | US5311495 Optical system for converging light beams to form a single beam spot on an optical disc |
05/10/1994 | US5311494 Optical disk apparatus and optical head |
05/10/1994 | US5311491 Method of data recording for optical disc having burst modulated track |
05/10/1994 | US5311490 Access controlling device for use in an optical disk drive |
05/10/1994 | US5311489 Optical head for recording, reproducing, or erasing information having fixed and movable head units |
05/10/1994 | US5311474 Random access optical storage |
05/10/1994 | US5310333 Roll stamper for molding substrate used for optical recording medium |
05/10/1994 | CA2012401C Focus-error detection using prism-enhanced spot size monitoring |
05/05/1994 | DE4229249A1 Optically-readable information carrier, e.g. CD - has metallised foil of, e.g. aluminium@, on base and uses UV radiation for mass hardening by thermo-mechanical process |
05/04/1994 | EP0595785A1 Electro-magnetic actuator and optical disk |
05/04/1994 | EP0595626A2 Recording condition determination method and apparatus upon execution of over-write operation on magnetooptical disk by heat shut off method and pulse train method, and magnetooptical recording method and apparatus |
05/04/1994 | EP0595625A2 Prepulse condition/heat shut off condition determination method and apparatus for optical recording, and optical recording method and apparatus |
05/04/1994 | EP0595349A1 Optical disk |
05/04/1994 | EP0595322A1 Optical information recording or reproducing apparatus |
05/04/1994 | EP0595055A2 Disk replication apparatus |
05/04/1994 | EP0594952A1 Focus error detecting element and optical head using the same |
05/03/1994 | US5309461 Compensated laser drive circuit |
05/03/1994 | US5309425 Signal processing circuit for optical disk apparatus |
05/03/1994 | US5309424 Optical recording apparatus recording beam controlled in response to reduced light level reflected between successively formed pits |
05/03/1994 | US5309422 Light separation element and light receiving optical device using same |
05/03/1994 | US5309421 Recording and/or reproducing apparatus for optical disk |
05/03/1994 | US5309420 Discriminator for detecting signal presence on optical media |
05/03/1994 | US5309419 M-O disk recording apparatus with light amount control based on multiple test performed on a test region at multiple disk rotational velocities |
05/03/1994 | US5309418 Track counting device using a PLL |
05/03/1994 | US5309417 Information recording/reproducing apparatus for optical information recording medium |
05/03/1994 | US5309415 Information recording method for overwriting a magneto-optic recording medium with two intensities of light beams |
05/03/1994 | US5308961 Optical-card reader |
05/03/1994 | US5308235 Roll stamper and apparatus for forming a substrate for information recording medium |