198059 ⎘
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; Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only Multi-beam tracking systems
Optical pickup apparatus and method to reproduce information onto and from discs having different thicknesses and storage capacities
#302Optical pickup apparatus
#303Method for real-time adjustment of servo gain in an optical recording system according to reflected recording light beam
#304Optical head device
#305Optical pickup unit requiring no phase adjustment
#306Optical pick-up system for use in an optical disk device including use of improved gratings with more efficient beam diffraction
#307System and method for measuring signal deviation used in an optical recording/reproducing apparatus
#308Information reproduction apparatus and information reproduction method
#309Tracking balance adjustment device
#310Track forming method for optical recording medium, and information recording method
#311Optical pickup apparatus having optical detection area for compensating for tracking error offset
#312Optimized tracking method
#313Optical pick-up head, optical information apparatus, and optical information reproducing method
#314Optical pickup device
#315Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up
#316Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up
#317Optical reproducing apparatus
#318Signal processing method and apparatus for high speed optical storage device
#319Optical pickup
#320Optical disk recording/reproducing apparatus
#321Hologram recording medium, recording/reproducing method and recording/reproducing apparatus
#322Optical head, optical recording and/or reproducing apparatus and integrated optical module
#323Optical information recording/reproducing device for performing at servo control by DPP method
#324Optical pickup
#325Optical recording medium, stamper for producing optical recording medium, recording/reproducing apparatus, and recording/reproducing method
#326Configuration of three-dimensional features in data recording structures
#327Dual three-spots optical scanning device
#328Optical pickup
#329Optical head device and optical information recording/reproducing apparatus
#330Tracking servo control apparatus and method using rotatable grating
#331Optical pickup apparatus for optical data media of different formats and method thereof
#332Optical disk apparatus
#333Optical pickup device using polarizing hologram element and hologram laser therefor
#334Optical pickup and disk drive apparatus
#335Manufacturing method for optical head device and optical head device
#336Optical head, LD module, optical recording-and-reproducing apparatus and diffraction element used in the optical recording-and-reproducing apparatus
#337Devices and methods to improve tracking error signals for optic storage systems
#338Optical head and optical disk drive
#339Method and apparatus to generate tracking error signal, optical storage drive using the same, and lead-in control method for the optical storage drive
#340Information recording apparatus, recording media and recording method
#341Optical recording medium, master for optical recording medium manufacture, recording and reproducing apparatus, and recording and reproducing method
#342Optical head, optical disk drive, and optical system adjustment method
#343Optical read device, information processing device using optical recording medium, and information reproduction method
#344Optical pick-up, optical disk apparatus and information processing apparatus
#345Optical information processing system using optical aberrations and information medium having recording layer protected by transparent layer having thickness irregularity