198045 ⎘
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 Methods and circuits to control the velocity of the head as it traverses the tracks
Sub-classes:Servo processor receiving photodetector signals
#2Servo processor receiving photodetector signals
#3Servo processor receiving photodetector signals
#4PLAYBACK DEVICE, PLAYBACK METHOD AND PROGRAM
#5Optical disk apparatus with an improved track jump performance
#6Servo control using digital signal processing for optical disk drive
#7Optical disc apparatus switching focus point between layers
#8Optical disk apparatus with an improved track jump performance
#9METHOD FOR PERFORMING TRACK-SEEKING IN AN OPTICAL DISK DRIVE
#10Optical Information Recording/Reproducing Method and Optical Information Recording/Reproducing Device
#11OPTICAL RECORDING/REPRODUCING APPARATUS
#12Track-jump control system and method for maintaining track-jump stability
#13Optical disk recording and reproduction apparatus and method of driving same
#14OPTICAL HEAD TRANSFER DEVICE, INTEGRATED CIRCUIT FOR OPTICAL HEAD TRANSFER DEVICE, FOCUSING LENS DRIVING DEVICE, AND INTEGRATED CIRCUIT FOR FOCUSING LENS DRIVING DEVICE
#15Optical disc apparatus switching focus point between layers
#16SEEKING CONTROL SYSTEM AND METHOD OF OPTICAL DISC DRIVE
#17METHOD AND APPARATUS OF SEEK END POLARITY DETECDTION FOR OPTICAL DISK DRIVE
#18SPHERICAL ABERRATION CORRECTION CONTROL
#19Optical Disk Drive and Tracking Error Detection Method For an Optical Disk Drive
#20Optical disk device
#21Optical drive servo with a servo processor receiving photodetector signals
#22Method and System for Automatically Locating the Optimal Controller Parameters of Optical Drive
#23Method and apparatus for slip protection of DVD-RAM drive's seek control
#24Off track write protection using filtered position error signal
#25Motor transfer rate calibrated jumping
#26Optical disc apparatus switching focus point between layers
#27Track-jump control system and method for maintaining track-jump stability
#28Disc drive mechanism and method of operation therefor
#29Optical disk apparatus with an improved track jump performance
#30Optical disc apparatus and optical-pickup movement control method installed in optical disc apparatus
#31Optical disk apparatus
#32Track-jump control device and method thereof
#33METHOD FOR DETERMINING A DRIVING FORCE TO DRIVE AN OPTICAL PICKUP HEAD
#34Servo system
#35Optical information recording apparatus and method
#36Tracking device
#37Device for playing optical discs
#38Enhanced methods for electronic storage device calibrations
#39Optical disk device and seek method in optical disk device
#40Track-seeking for optical pick-up unit with dynamic compensation
#41Control circuit for optical disk apparatus and method of controlling record/playback of optical disk
#42Optical disk apparatus
#43Method and apparatus for controlling a disc seek operation based on a detected abnormality
#44Optical disk drive and method for controlling sled motor within optical disk drive
#45System and method for detecting and recovering from an off-format state in an optical disc drive
#46Method and device for long-range track seeking control in an optical storage system
#47METHOD AND APPARATUS FOR MOVING AN OPTICAL PROCESSING UNIT IN AN OPTICAL DISC DRIVE
#48Optical disc apparatus
#49METHOD AND APPARATUS FOR RECOVERING RFZC SIGNAL TO CORRECT PHASE
#50Device and method for calibrating linear velocity and track pitch for optical disc
#51Long seek control device for optical disk drive and method thereof
#52Controlling optical pickup of optical disk drive by detecting change of sampling signals taken from a motor drive signal
#53Method for controlling stepping motor
#54Method and apparatus of seek end polarity detection for optical disk drive
#55Method and system for controlling disk servo
#56METHOD FOR CONTROLLING A SLED-HOME OPERATION
#57Position control of opticial head in a recording device
#58Method and apparatus for slip protection of DVD-RAM drive's seek control
#59Optical disc apparatus switching focus point between layers
#60Focus point switching
#61Optical disc apparatus switching focus point between layers
#62Compensation method for detecting the seeking speed of an optical disk drive
#63Optical disk apparatus, signal processing apparatus, and playback control method for optical disk apparatus
#64Disk drive apparatus
#65Method and apparatus for long seeking control in an optical disc drive
#66Method and apparatus for achieving a short seek with a stepping motor
#67Optical disk apparatus and pickup driving method thereof
#68Method of controlling a sled motor control signal
#69Method for controlling the tracking on action of an optical disk drive
#70Stepping motor controlling method and disk apparatus