Patents
Patents for G11B 7 - 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 (102,715)
07/2001
07/10/2001US6258303 For monitoring an injection molding machine for molding a disc substrate
07/09/2001WO2001065550A1 Optical disc apparatus
07/05/2001WO2001048753A1 Rewritable phase change optical disk partly having rom region and data recording and erasing methods for optical disk
07/05/2001WO2001048752A1 Process for mirror-finishing the edge of a recording disk raw plate
07/05/2001WO2001048751A2 Molecular level optical information storage devices
07/05/2001WO2001048750A1 Optical recording medium and method for producing the same
07/05/2001WO2001048749A1 Optical head, light-emitting/receiving device, and apparatus for recording/reproducing optical recording/recorded medium
07/05/2001WO2001048748A1 Optical wavefront modifier
07/05/2001WO2001048747A2 Optical wavefront modifier
07/05/2001WO2001048746A1 Optical element
07/05/2001WO2001048745A2 Optical scanning head
07/05/2001WO2001048744A1 Optical scanning head
07/05/2001WO2001048743A1 Optical disc device and method for controlling track hold thereof
07/05/2001WO2001048742A1 Optical scanning unit comprising a detection system for detecting the position of a movable element within the unit
07/05/2001WO2001048741A2 Optical scanning head
07/05/2001WO2001048740A1 Optical data drive
07/05/2001WO2001048031A1 Hydrogenated styrene polymer and optical-disk substrate
07/05/2001WO2001047719A1 Optical recording medium and novel azaporphyrin compounds
07/05/2001WO2000079534A3 Method of driving head, head driving device and disc driving apparatus using the same method and device
07/05/2001US20010006771 Storage medium playback system and method
07/05/2001US20010006575 Code judging apparatus and method record medium judging apparatus and method, and information recording apparatus and method
07/05/2001US20010006506 Disk drive apparatus
07/05/2001US20010006505 Mounting structure of hybrid optical module, and an optical recording medium drive apparatus in which the module is mounted
07/05/2001US20010006504 Device for reading from and/or writing to optical recording media
07/05/2001US20010006503 Removable optical storage device and system
07/05/2001US20010006501 Device and method for controlling optical recording/reproducing device
07/05/2001US20010006500 Asymmetry detection apparatus, jitter detection apparatus, and recording/reproduction apparatus
07/05/2001US20010006498 Data recorder
07/05/2001US20010006497 Optical disc driver and data recording method therefor
07/05/2001US20010006494 Apparatus and method for controlling tracking for optical recording/reproducing apparatus
07/05/2001US20010006434 Objective lens for high-density optical focusing and an optical disk in an optical pickup
07/05/2001US20010006429 Optical wavefront modifier
07/05/2001US20010006211 Method and apparatus for determining a type of disk
07/05/2001US20010006035 Preparing a mixture of a zinc sulfide powder having an average particle diameter of 0.5 to 20 mu m and a niobium oxide powder having average particle size of 5 mu m or less, hot pressing the mixture at 800-1100 degree C.
07/05/2001DE19943659C2 Drehantriebsvorrichtung für eine Prüfstation, insbesondere für DVD's Rotary driving device for a test station, in particular for DVD's
07/05/2001DE10065452A1 Hybrid lens with refraction- and diffraction-lens structure e.g. for optical memory disc device, has refraction lens designed such that the coma is largely corrected and changes in spherical
07/05/2001DE10065394A1 Objective lens for optical write/read head e.g. for optical memory/storage disc equipment, has lens surface divided into exclusion zone for light beam of first numerical aperture and a common zone for light beam of second numerical aperture
07/04/2001EP1113444A2 Optical disk, reproduction apparatus, and reproduction method
07/04/2001EP1113443A2 Disk recording medium and disk drive unit
07/04/2001EP1113433A2 Code judging apparatus and method, record medium judging apparatus and method, and information recording apparatus and method
07/04/2001EP1113429A1 Recordable optical media with a silver-palladium reflective layer
07/04/2001EP1113428A2 Package structure for a hybrid optical module and method of producing the same
07/04/2001EP1113427A2 Mounting structure of hybrid optical module, and an optical recording medium drive apparatus in which the module is mounted
07/04/2001EP1113426A2 Optical pickup device, optical disc apparatus and method of detecting track cross signal
07/04/2001EP1112988A1 ZnS-series sintered material and method for producing the same, target using the ZnS-series sintered material, thin film, and optical recording medium using the thin film
07/04/2001EP1112570A1 Optical data storage
07/04/2001EP1112569A1 Methods and devices for recording marks in an information layer of an optical record carrier, and record carriers for use therein.
07/04/2001EP1112330A1 Adhesive for optical disks
07/04/2001CN2438207Y Reading device adjusting mechanism for optical disc machine
07/04/2001CN2438206Y Tilt angle adjusting device for optical reading head
07/04/2001CN1302438A Optical data storage
07/04/2001CN1302434A Optical scanning device comprising a bent actuator coil
07/04/2001CN1302433A Optical information recording/reproducing device
07/04/2001CN1302432A Pickup control device for optical disk drive
07/04/2001CN1302430A Method of recording on disk-like recording medium
07/04/2001CN1302253A Metal alloy for reflective or semi-reflective layer of an optical storage medium
07/04/2001CN1302068A Disc driving system
07/04/2001CN1302066A Optic record medium and record/replay device
07/04/2001CN1302061A Megnet-optic record medium
07/04/2001CN1302060A Record medium contained in box
07/04/2001CN1302059A Rewritable DVD disc
07/03/2001US6256287 Method of manufacturing a lens system comprising two lens elements
07/03/2001US6256286 Method for initiating a phase change recording medium
07/03/2001US6256285 Optical scanning device
07/03/2001US6256284 Optical head having two semiconductor lasers of different wavelength, an objective lens focusing laser beams on different thickness substrates, and an annular phase shifter decreasing focused laser beam spot abberation
07/03/2001US6256283 Optical pickup having a common light beam path for passing either of a plurality of kinds of light beams
07/03/2001US6256282 Optical recording medium and recording method thereof
07/03/2001US6256281 Volume holographic memory-based optical information-recording/reproducing apparatus
07/03/2001US6256277 Information recording apparatus having controlled recording energy generation circuit
07/03/2001US6256276 Disk recording and reproducing apparatus and method for use in a rewritable type disk
07/03/2001US6256275 Disk reproducing apparatus and method of detecting vibration
07/03/2001US6256274 Data erasure preventing method and circuit thereof and optical disc apparatus mounting the same
07/03/2001US6256273 Focusing control apparatus for optimally directing light onto a recording surface
07/03/2001US6256272 Optical pickup
07/03/2001US6256271 Focus error signal generation using two polarizers in confocal configuration
07/03/2001US6256268 CD player for CD-like recording formats
07/03/2001US6256266 Magneto-optical recording medium having lands and grooves of discontinue regions
07/03/2001US6256164 Adjustment mechanism for servo track writer for use in hard disc drive
07/03/2001US6256154 Catadioptric lens, optical head and optical recording and/or reproducing apparatus
07/03/2001US6255619 Lens, semiconductor laser element, device for machining the lens and element, process for producing semiconductor laser element, optical element, and device and method for machining optical element
07/03/2001US6255026 Methods and devices having means for writing storing and erasing which comprise an active medium containing at least one spin-transition parent compound
07/03/2001US6254966 Information recording mediums, supporter used in the mediums, manufacture methods of the supporter, manufacturing apparatus of the supporter and stampers for producing the mediums
07/03/2001US6254957 Rewritable optical information medium
07/03/2001US6254809 For manufacturing digital versatile disks (dvds)
07/03/2001US6254284 Optical pickup having optical waveguide device fixed on stem with wedge-shaped device fixing member interposed and method of manufacturing the same
07/03/2001CA2067000C Bearing ring with low sliding friction for an optical disk
06/2001
06/28/2001WO2001046952A2 Digital content security
06/28/2001WO2001046951A2 Playback device and storage medium for compressed audio data
06/28/2001WO2001046950A1 Optical information recording medium, method of recording and reproducing, and optical recording and reproducing system
06/28/2001WO2001046949A1 Optical disk for adjusting optical pickup, method for adjusting optical pickup, and device for adjusting optical pickup
06/28/2001WO2001004905B1 Optical data carrier in the form of a disk
06/28/2001US20010005683 Cellular radiotelephone system with remotely programmed mobile stations
06/28/2001US20010005537 Recording medium and method of manufacturing same
06/28/2001US20010005536 Optical information recording medium and method of manufacturing same
06/28/2001US20010005535 Optical recording medium and recording and reproduction apparatus
06/28/2001US20010005390 Semiconductor laser driving method and optical disc apparatus
06/28/2001US20010005357 Hybrid optical disc construction
06/28/2001US20010005356 Optical pick-up feeding device
06/28/2001US20010005354 Optical pickup device, information reproduction/recording apparatus, and information processing apparatus
06/28/2001US20010005353 Optical recording/reproducing apparatus