198082 ⎘
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 Methods and circuits for servo offset compensation
Method of recording and reproducing an optical recording medium
#302Optical reproducing apparatus
#303Signal generating circuit and optical pickup device provided therewith
#304Optical information recording and reproducing apparatus
#305Apparatus and method for calibrating a laser imagible apparatus
#306Optical information recording medium and optical information recording and reproducing apparatus
#307Optical storage system and control method
#308Optical disk recording/reproducing apparatus
#309Optical lens and method of producing the same, method of producing optical lens array, focus error signal production method, and optical pickup apparatus
#310Tracking error control system and method
#311Data slice generation method and apparatus for optical disk drive
#312Information playback apparatus, in-line circuit, and method for implementing in-line circuit on information playback apparatus
#313Apparatus having switchable servo gains and offsets for optical disk drive and method thereof
#314Optical pickup device using polarizing hologram element and hologram laser therefor
#315Optical pickup apparatus, optical disk apparatus and optical pickup adjustment method
#316Information recording medium, information recording/reproducing apparatus and information reproducing method
#317Optical head, LD module, optical recording-and-reproducing apparatus and diffraction element used in the optical recording-and-reproducing apparatus
#318Optical disk reproducing apparatus, and offset adjustment method
#319Optical pickup and optical recording and/or reproducing apparatus adopting the same
#320Record/playback apparatus and record/playback method
#321Optical pick-up apparatus
#322Optical recording apparatus
#323Method for obtaining an optimum focusing point of an optical pickup unit and a servo system of an optical disk drive using this method
#324Optical recording and reproduction apparatus including stable and inexpensive servo control mechanism
#325Optical pickup tracking error detecting method and optical pickup device
#326Method for adjusting focus bias in optical disk device
#327Optical lens and method of producing the same, method of producing optical lens array, focus error signal production method, and optical pickup apparatus
#328Generating tracking control output signals for compensating tracking error signals
#329Optical scanner with micro-optics for beam combination
#330Optical read device, information processing device using optical recording medium, and information reproduction method
#331Optical pickup device and method for controlling the same
#332Servo pattern for precise tracking in optical tapes
#333Data storage device adapting two-dimensional equalizer based on off-track offset
#334Adaptive control of tracking servo system of optical heads in optical storage devices