198065 ⎘
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 focusing only by push-pull method
Optical pickup and optical recording and reproducing device
#2Optical disc device
#3OPTICAL DISC DEVICE
#4Optical pickup device and optical read/write apparatus
#5OPTICAL PICKUP
#6Optical disc device
#7Automatic power control system for optical disc drive and method thereof
#8Optical pickup device and optical disc apparatus using same
#9Automatic power control system for optical disc drive and method thereof
#10Optical pickup device
#11Optical pickup and optical disc apparatus
#12Optical pickup device and optical disc device
#13Optical integrated device, method for detecting light, optical pickup, and optical disc apparatus
#14Optical pickup apparatus and optical disc apparatus
#15Optimizing focus point for optical disc
#16Optical pickup apparatus
#17Automatic power control system for optical disc drive and method thereof
#18Optical pickup apparatus, focal-point adjusting method, and optical disc apparatus
#19Optical pickup apparatus, focal-point adjusting method, and optical disc apparatus
#20Optical pickup apparatus for use on a multi-layered optical information storage medium
#21Optical disc apparatus, method of controlling the same, and information storage medium
#22Optical disc device
#23Automatic power control system for optical disc drive and method thereof
#24Optical pickup device, optical recording/reproducing apparatus and gap-control method
#25Optical head device and optical information processor
#26Optical disk unit
#27Optical data storage medium, apparatus and method for scanning such a medium
#28OPTICAL DISC APPARATUS AND OPTICAL DISC APPARATUS CONTROL METHOD
#29WRITABLE OPTICAL INFORMATION RECORDING MEDIUM, APPARATUS FOR REPRODUCING THE SAME, AND METHOD OF DETERMINING THE SAME
#30Optical pickup apparatus and beam splitter
#31Optical pickup and optical disc unit
#32Optical pickup apparatus
#33Spot Size Focus Error Detection For Multiple Beam Optical Scanning Device
#34Holographic diffraction element and optical pickup device using holographic diffraction element
#35Optimizing focus point for optical disc
#36Automatic power control system for optical disc drive and method thereof
#37Optical Pickup and Optical Disc Apparatus
#38Method for Improving Robustness of Optical Disk Readout
#39Multilevel nano-structure optical media with oriented tracking marks
#40Optical pickup device
#41Optical pickup device
#42Duty ratio control apparatus for pre-pit detection or header detection of an optical storage medium
#43Optical pickup, information processing apparatus and signal processing method
#44Optical head unit and optical disc apparatus
#45Optical head, light-emitting/receiving device, and apparatus for recording/reproducing optical recording/recorded medium
#46Optical pickup, optical recording and/or reproducing apparatus using the same, and method for detecting tracking error signal
#47Information storage medium and method of recording and/or reproducing data on and/or from the same
#48Information storage medium and method of recording and/or reproducing data on and/or from the same
#49Apparatus and method for generating modulation signal using tangential push-pull signal
#50Optical information recording medium manfacturing method therefor, manufacturing apparatus therefor, and optical information recording and reproducing apparatus
#51Optical information recording apparatus and method
#52Optical pickup apparatus employing a grating and a hologram that generate multiple beams detected by a photodetector
#53Optical disc recording/reproduction device
#54Method of detecting focus error signal of optical head and optical head and optical recording/reproducing apparatus utilizing the same
#55Optical disk apparatus and method of controlling optical disk apparatus
#56Read write device for optical memory and method therefore
#57Focus error detecting device and optical pickup apparatus provided with the same
#58Optical head device
#59Holographic ROM reader having servo control
#60System and method for detecting and recovering from an off-format state in an optical disc drive
#61Method and device for correcting optical path deviation of an optical pickup in an optical recording system
#62Optical pickup device that corrects the spot shape of reflected light beams
#63Hologram recording medium, recording/reproducing method and recording/reproducing apparatus
#64Optical pickup device and optical disc device
#65Diffraction grating element and optical pickup
#66Devices and methods to improve tracking error signals for optic storage systems
#67Optical disk device
#68Optical storage device, optical device and servo controlling method therefor having first and second focus error signal detectors with different detection ranges and target trajectory generator
#69Information storage medium and method of recording and/or reproducing data on and/or from the same
#70Optical head, optical disk drive, and optical system adjustment method
#71Optical pick-up, optical disk apparatus and information processing apparatus
#72Optical pickup apparatus for detecting a focus-error signal using a spot size detection method