198057 ⎘
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
Sub-classes:Method of forming birefringent structures in an optical element
#2Absolute position encoder using a focused laser beam to detect position code words
#3Non-rotating optical storage using adjustable mirrors
#4Record playback apparatus
#5Optical disc apparatus controlling irradiation position based on cross-correlation value between reproduction signal and decoded signal
#6Optical information recording device and optical information recording method
#7Optical-information recording/reproducing apparatus and optical-information recording/reproducing method
#8Information recording and playback device
#9Optical information reproduction device and optical information reproduction method
#10Recording/reproducing apparatus and recording medium
#11Optical disk apparatus, control method, control program and information storage medium
#12Sample holding carrier, and fluorescence detection system and fluorescence detection device that use same
#13Optical head, objective lens, optical disc device, computer, optical disc player, and optical disc recorder
#14Optical recording and reading method, optical recording and reading apparatus, optical recording medium, and method for producing an optical recording medium
#15Optical recording and reading method, optical recording and reading apparatus, optical recording medium, and method for producing an optical recording medium
#16Optical disc device and laser beam power controlling method for optical disc device
#17Information storage device, information recording medium, and information storage method
#18Optical recording medium, and optical information device
#19INFORMATION REPRODUCTION APPARATUS AND METHOD FOR CONTROLLING SAME
#20OPTICAL PICKUP DEVICE AND OPTICAL DISC DRIVE
#21Optical disc device and tracking servo control circuit therefor
#22Optical recording medium, and optical information device
#23Cascaded control of a pick-up head for multi-layer optical data storage
#24Optical storage medium and optical information apparatus
#25Optical signal detecting circuit and information reproducing device using the same
#26Suspension Arm Actuator For an Optical Scanning Device
#27Holographic system, in particular for holographic data storage
#28Sync mark correction for holographic data pages
#29Lens system for common aperture holographic storage system
#30Reduced noise servo control
#31Recording/reproducing apparatus, method of reproducing data, and servo controlling method
#32Sensing absolute position of an encoded object
#33Reflective holographic storage media with control information in underlying DVD reflective layer
#34Device and method for scanning data stored on a recording medium
#35Alignment feature for near-field transducers
#36Optical pickup device, and information recording and reproduction device
#37Apparatus and method for stabilizing operation of disc driver in section for setting mode conversion
#38Apparatus and method of estimating the quality of input signal, and optical disc driver
#39Optical pickup device, recording and reproducing apparatus and gap detection method
#40Signal processing method and optical pickup for keeping available information during high speed optical recording
#41Holographic storage and reproduction system and method with servo
#42Holographic memory reproduction method and apparatus
#43Alignment of Holographic Images on Detector
#44Signal processing method and signal processing apparatus
#45Apparatus and methods for forming optically visible marks on a rotating media
#46Sensing absolute position of an encoded object
#47Method for compensating for position error in an optical disc apparatus
#48Optical storage with direct digital optical detection
#49Optical pick-up device using micromirror array lens
#50Hologram recording apparatus, hologram reproducing apparatus, hologram recording method, and hologram reproducing method
#51Tracking device
#52Optical disc device
#53Methods, apparatus and computer program products for detecting oscillation of a servo controller
#54Optical disk apparatus using mechanism for controlling spherical aberration
#55Apparatus and method for stabilizing operation of disc driver in section for setting mode conversion
#56Method of deriving suitable-and-hold timing, and optical disk drive using the same method
#57OPTICAL DISC DRIVE CAPABLE OF GENERATING DIGITAL SERVO CONTROL SIGNALS AND METHOD THEREOF
#58Method and optical disk drive for promptly protecting voice coil motor thereof from over current
#59Optical scanning device
#60System and method for detecting and recovering from an off-format state in an optical disc drive
#61Signal processing method and optical pickup capable of reducing signal distortion
#62Optical pickup actuator in writing and reading device
#63Apparatus for preventing damage of actuator coil in optical disc system and method for the same
#64Apparatus and method for controlling tracking and focusing servo in a holographic digital data storage system
#65Tilt sensor and optical disk drive
#66Optical information recording apparatus, optical information reproducing apparatus, and optical information recording/reproducing apparatus
#67Non-rotating optical storage
#68Non-rotating optical storage
#69Adaptive control of tracking servo system of optical heads in optical storage devices