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)
04/2004
04/28/2004CN1492411A Disc driver
04/28/2004CN1492410A Disc driver
04/28/2004CN1492409A Multi media optical disc and its reproducing device and reproducing method
04/28/2004CN1492408A Optical data storage medium and method of recording data
04/28/2004CN1492407A Access method for optimum burning power data of optical disc burning machine
04/28/2004CN1492406A Detector presetting pit and hole signal
04/28/2004CN1492404A Method for effectively avoiding error detection of flaw point during burning of optical disc burning machine
04/28/2004CN1492403A Optical disc and its producing method
04/28/2004CN1492402A Optical disc, method for producing optical disc and replay device
04/28/2004CN1492401A Multimedia optical disc for realizing transfer reproduction to parental locking zone by little control information and its reproducing device
04/28/2004CN1492240A Objective lens and optical head device
04/28/2004CN1491993A Optical recording medium containing substituted phthalonitrile compounds and its use
04/28/2004CN1147863C Optical pickup device
04/28/2004CN1147862C Externally connected CD burning controller
04/28/2004CN1147858C Tracking controller
04/28/2004CN1147857C Recording method of optical recording medium and method for reproducing information from optical recording medium
04/28/2004CN1147856C Apparatus for manufacture of informatino recording medium, information recording medium/apparatus/method
04/28/2004CN1147855C Recording apparatus and playback apparatus
04/28/2004CN1147852C Optical disk playback device and optical disk playback method
04/28/2004CN1147851C Information recording method and apparatus, information recording reproducing method and apparatus
04/28/2004CN1147850C Reproducing equipment and reproducing method
04/28/2004CN1147847C 光盘 CD
04/28/2004CN1147846C Complex polymethine dyes and their use
04/28/2004CN1147845C Optic pick-up device, recording and reproducing device and light focusing system and coupling lens
04/28/2004CN1147844C Optical sensor device
04/28/2004CN1147843C Light pick-up transfer mechanism
04/28/2004CN1147842C Disc driving device
04/28/2004CN1147841C Optical disk for information recording regeneration and information recording regenerator using the same
04/28/2004CN1147840C Disk driving unit
04/28/2004CN1147839C Light information recording/reproducing apparatus
04/28/2004CN1147834C Recording medium, recording/reproducing method and recording/reproducing apparatus
04/28/2004CN1147752C Objective for differential thick optical disk
04/28/2004CN1147562C Liquid-crystalline polyethers
04/27/2004US6728882 Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk
04/27/2004US6728198 Optical information medium and recording method therefor
04/27/2004US6728197 Minimized distortion; greater tolerances; low cost
04/27/2004US6728196 Reverse optical mastering for data storage disks
04/27/2004US6728195 Multi-layered optical disk with shifted track and layer identification and method of detecting a track
04/27/2004US6728194 Optical recording medium, method of making the same and optical memory device using the optical memory medium
04/27/2004US6728193 Optical pickup device and optical disc driving device
04/27/2004US6728192 Tracking error signal detection system for optical recording medium
04/27/2004US6728185 Device for assembling and adjusting an optical unit
04/27/2004US6728184 Method and device of determining the slice level of the radio frequency ripple signal in an optical storage device
04/27/2004US6728183 Optical disk device
04/27/2004US6728182 Tracking and focus servo system with a media type boundary crossing detector
04/27/2004US6728181 Code judging apparatus and method, record medium judging apparatus and method, and information recording apparatus and method
04/27/2004US6728180 Blank detection circuit and method therefor
04/27/2004US6728179 Apparatus and method for optical recording/reproducing information including electrical spherical-aberration correction mechanism having low power consumption
04/27/2004US6728178 Semiconductor laser control method and semiconductor laser control device
04/27/2004US6728177 Method of recording data on optical disc at high multiple speed and apparatus thereof
04/27/2004US6728176 Information recording method
04/27/2004US6728174 Recording medium and reproducing method and apparatus for recording medium
04/27/2004US6728173 Information reproducing method which reproduces plural components of a focus error signal and a tracking error signal from plural detection regions of plural reflected light beams
04/27/2004US6728172 Objective lens and optical pickup apparatus
04/27/2004US6728171 Arrangements for correction of focusing light beam, and system using the same
04/27/2004US6728154 Three-dimensional optical memory medium and process for producing same
04/27/2004US6728059 Magnetic data card servo writer
04/27/2004US6728042 Optical pick-up device and objective lens used therein
04/27/2004US6728035 Optical device with diffraction grating having plural grating regions
04/27/2004US6728034 Diffractive optical element that polarizes light and an optical pickup using the same
04/27/2004US6727041 Optical recording media
04/27/2004US6726973 Two sided graphical image DVDs and methods for making same
04/27/2004US6726972 Optical data storage medium containing a diaza hemicyanine dye as the light-absorbing compound in the information layer
04/27/2004CA2168974C Method of marking a body of material
04/22/2004WO2004034391A1 Method of producing optical disk-use original and method of producing optical disk
04/22/2004WO2004034390A1 Optical information recording medium and manufacturing method thereof
04/22/2004WO2004034389A1 A data detector system
04/22/2004WO2004034388A1 Optical disc tracking control device, tracking control method, and tracking control program
04/22/2004WO2004034387A1 Information recording method, reproducing method and recording/reproducig method utilizing holography
04/22/2004WO2004034386A1 Optical data recording method
04/22/2004WO2004033529A1 Polycarbonate copolymers and methods for producing the polycarbonate copolymers
04/22/2004WO2004033217A1 Printer
04/22/2004WO2004021335A3 Track jump unit.
04/22/2004WO2004018583A3 Method for bonding dvd layers
04/22/2004WO2004015693A3 Optical unit with light-emitting source
04/22/2004WO2004008441A3 Optical recording and reading system, optical data storage medium and use of such medium
04/22/2004WO2004006754A3 Method for noise cancellation by spectral flattening of laser output in a multi-line-laser instrument
04/22/2004WO2003079338A3 Control method for focus and tracking in pickup apparatus
04/22/2004WO2002050820A8 Production of master recording media
04/22/2004US20040078705 Recording medium for storing start position information for each zone and method of managing data using the information
04/22/2004US20040078668 Information processing device and information processing method, maintenance information management system and recording medium
04/22/2004US20040078530 Control apparatus and optical disc apparatus using it
04/22/2004US20040077795 Improved toughness, softening point, and moldability; optical disks
04/22/2004US20040076908 Reflecting layer; phase change recording layer that changes between a crystalline state and an amorphous state when irradiated; 2 dielectric layers having diferent thermocon-ductivities between the substrate and the reflecting layer
04/22/2004US20040076907 Optical recording medium and method for manufacturing the same
04/22/2004US20040076111 Optical recording medium
04/22/2004US20040076110 Optical disk medium, optical disk device, and master production method
04/22/2004US20040076109 Promotional article and method for assembling the article
04/22/2004US20040076108 Interference isolation apparatus for a pick up head
04/22/2004US20040076107 Optical pickup
04/22/2004US20040076106 Optical pickup device
04/22/2004US20040076105 Data access device using rotational head to access data stored in data strips & data arc segments or data circles
04/22/2004US20040076101 High-density read-only optical disc, method for recording disc information (DI) on the high-density read-only optica disc, and method for reproducing data recorded on the high-density read-only optical disc
04/22/2004US20040076100 Optical disc device capable of recording or reading with high efficiency
04/22/2004US20040076099 Recording method for a phase-change optical recording medium
04/22/2004US20040076098 Apparatus and method detecting fashion disc
04/22/2004US20040076096 Method of and apparatus for managing disc defects using temporary defect management information (TDFL) and temporary defect management information (TDDS), and disc having the TDFL and TDDS
04/22/2004US20040076095 Method and apparatus for preventing malfunction of disc drive
04/22/2004US20040076094 Method of determining recording power for recordable optical disk in optical disk system
04/22/2004US20040076092 Method and device for adjusting focus bias in optical disc apparatus