198047 ⎘
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 into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection; Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position
MULTI-CHANNEL MULTIPLEXING METHOD AND DEVICE FOR DISC STORAGE MEDIUM
#2METHOD AND DEVICE FOR ACCURATELY DETECTING AND CONTROLLING POSITION OF OPTICAL HEAD AND OPTICAL DISK
#3Optical recording medium having a plurality of recording layers capable of suppressing off-track
#4Optical recording medium having a plurality of recording layers capable of suppressing off-track
#5Servo processor receiving photodetector signals
#6OPTICAL PICKUP AND DISC DEVICE
#7Servo processor receiving photodetector signals
#8Servo processor receiving photodetector signals
#9METHOD FOR CALIBRATING STEPS OF STEPPING MOTOR USED IN OPTICAL DISC DRIVE
#10Circuit for generating a signal for controlling reproduction of data recorded on an optical disc
#11Servo control using digital signal processing for optical disk drive
#12Optical disk device
#13Servo control signal generation device and an optical disk device using the same
#14Information recording/reproducing apparatus, apparatus for manufacturing optical information recording medium, and optical information recording medium
#15DRIVE APPARATUS AND TRACK JUMP METHOD
#16Optical focus error offset to reduce radial to vertical crosstalk
#17Optical disc apparatus and seek processing method
#18Method of Moving Tracks, Method and Apparatus of Recording and/or Playback
#19Optical drive servo with a servo processor receiving photodetector signals
#20Track Jump Control Circuit
#21Optical disk device performing high-speed seek operation and optical disk device seeking method
#22Method and device for track counting in optical recording media
#23Optical disk drive
#24Rewritable optical recording medium, recording method on the same, and optical disc recording/retrieving apparatus
#25Rewritable optical recording medium, recording method on the same, and optical disc recording/retrieving apparatus
#26Tracking control method and optical disk drive
#27Optical disc apparatus and optical-pickup movement control method installed in optical disc apparatus
#28Servo control device, optical disk drive, and servo control method
#29Servo control signal generation device and an optical disk device using the same
#30Apparatus for reading and/or writing optical recording media
#31Optical disc drive
#32Track jump apparatus and method which perform track jumping considering position of pickup
#33Tracking device
#34Device for playing optical discs
#35Specially formatted optical disk and method of playback
#36Header mask signal generating track jump method for a recording medium
#37Optical disk device and seek method in optical disk device
#38METHOD AND DEVICE FOR DETERMINING SLICING LEVEL OF TRACK-CROSSING SIGNAL
#39Track-seeking for optical pick-up unit with dynamic compensation
#40Information storage apparatus
#41Control circuit for optical disk apparatus and method of controlling record/playback of optical disk
#42System and method for detecting and recovering from an off-format state in an optical disc drive
#43Method and device for long-range track seeking control in an optical storage system
#44Optical disk apparatus
#45Optical disk apparatus
#46Recording and retrieving method on rewritable optical recording medium
#47Apparatus and method of performing pause motion of optical pickup
#48METHOD AND APPARATUS FOR IMPROVED SEEK PERFORMANCE AND STABILITY IN A HEADER-INCLUDED LAND/GROOVE OPTICAL DISC
#49Information disk recording/reproducing device and method for controlling recording/reproducing speed thereof
#50Method of seeking in optical disk drive
#51Method of adjusting the track to photo ratio in an optical disc drive
#52Optical recording medium and optical information processor
#53Method and apparatus of mirror signal auto-calibration for optical disk drive
#54Apparatus for reading from or writing to optical recording media having means of disk type identification
#55Method of correcting a step number of a stepping motor in an optical drive
#56Position regulation by means of track count
#57Specially formatted optical disk and method of playback
#58Method and apparatus for detecting run-out in optical disk drive
#59Method and apparatus for long seeking control in an optical disc drive
#60Method of on-line adjusting a sled motor control signal (FMO)
#61Method for controlling the tracking on action of an optical disk drive
#62Optical display device