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)
09/2005
09/07/2005CN2724147Y Digital video optical disc with color
09/07/2005CN1666283A Disc comprising a substrate having a support plate and a registration layer connected to the support plate
09/07/2005CN1666281A Information carrier provided with a transitional region between the clambing area and the information area
09/07/2005CN1666278A Data retention of integrated circuit on record carrier
09/07/2005CN1666275A Optical signal receiving unit and apparatus for reproducing information
09/07/2005CN1666272A Rewritalbe optical data storage medium and use of such a medium
09/07/2005CN1666271A Protective cover for optically read digital disks
09/07/2005CN1666270A Optical recording and reading system, optical data storage medium and use of such medium
09/07/2005CN1666269A Optical pickup
09/07/2005CN1666268A Disc-shaped recording medium, disc driving device and disc producing method
09/07/2005CN1666267A Method of recording drive information on optical disc and optical disc having drive information recorded using the method
09/07/2005CN1666266A Information storage medium and method of recording and/or reproducing data thereon
09/07/2005CN1666265A High-density reproduction-only optical disc and method for reproducing data from the same
09/07/2005CN1666264A Optical pickup adjusting optical disc, optical pickup adjusting device, and method
09/07/2005CN1666263A Information recording medium and information recorder
09/07/2005CN1666262A Optical disc, optical disc recording device, optical disc recording method
09/07/2005CN1666261A Method for recording data to optical recording medium, device for recording data to optical recording medium, and optical recording medium
09/07/2005CN1666260A Optical disc and method for recording data on the same
09/07/2005CN1666259A Optical disc having small access units and address information modulation method therefor
09/07/2005CN1666258A Lens driving device for optical read and/or write system and optical read/write system
09/07/2005CN1664949A Record disc and equipment for playback of recorded information
09/07/2005CN1664948A Yoke plate for optical pick-up actuator
09/07/2005CN1664946A Data recording medium and reproducing apparatus thereof
09/07/2005CN1664945A Information recording medium/information playback method, information recording medium/information playback apparatus
09/07/2005CN1664943A Disk detection system
09/07/2005CN1664941A Information recording medium and method for manufacturing the same
09/07/2005CN1664940A Multi-level read-only optical disc and method of production
09/07/2005CN1664939A Optical information recording medium and method of manufacturing the same
09/07/2005CN1664938A Magnetic circuit, and optical pickup actuator and optical recording and/or reproducing apparatus using the magnetic circuit
09/07/2005CN1664937A Objective lens driving device and optical pickup device using the same
09/07/2005CN1664936A Optical pickup moving mechanism and disk drive using the same
09/07/2005CN1664935A Write pulse optimizing method
09/07/2005CN1664934A Multilayer record carrier and method of manufacturing thereof and recording thereon
09/07/2005CN1664916A Automatic player musical instrument exactly reproducing performance and automatic player used therein
09/07/2005CN1664641A Compact lens module
09/07/2005CN1218451C Semiconductor laser drive circuit and semiconductor laser driving method
09/07/2005CN1218315C Coding method for recording digital code
09/07/2005CN1218314C Usage of SDRAM as storage for correction and track buffering in frontend ICS of optical recording or reproducing devices
09/07/2005CN1218311C Optical recording medium for recording power information of erasing mode
09/07/2005CN1218310C Optical recording medium and use of such optical recording medium
09/07/2005CN1218309C Method for producing multilayer information memory medium
09/07/2005CN1218308C Optical recording medium, reproducing device, and recording reproducing device
09/07/2005CN1218307C Optical pickup device and laser diode chip
09/07/2005CN1218306C Optical pick-up head unit
09/07/2005CN1218305C Objective lens for optical pick up head device
09/07/2005CN1218304C Optical head device with optical phase shifting sheet
09/07/2005CN1218303C Optical head for recording small size disc and with annular holographic lenses for compatibility of various discs
09/07/2005CN1218302C Record carrier of the optical type and a device for recording and/or playback for use with such a record carrier
09/07/2005CN1218301C Combination apparatus with optical discs
09/07/2005CN1218300C Optical disk equipment and focusing leaping method
09/06/2005US6941571 Recording and/or reproducing device
09/06/2005US6941563 Disk player using a single switch in common for driving its tray and drive motor
09/06/2005US6941352 Computer for a reproducing medium
09/06/2005US6941046 Dual wavelength semiconductor laser source for optical pickup
09/06/2005US6940805 Methods and apparatus for cross-talk and jitter reduction in multi-beam optical disks
09/06/2005US6940804 Power control circuit for optical information recording device
09/06/2005US6940803 Optical head, recording and reproducing apparatus and solid immersion lens
09/06/2005US6940802 Optical scanning device with an actuator coil bent around the beam path
09/06/2005US6940801 multilevel data at high density and high S/N ratio; polarization angle multilevel recording; photo-induced birefringence; controlling a voltage applied to the polarization rotary device to change a polarization angle theta of recording light
09/06/2005US6940800 Reproduced signal evaluation apparatus and method, reproduction apparatus and method, and recording apparatus and method
09/06/2005US6940799 Method for generating a signal for detecting the direction of movement of a laser spot, and apparatus therefor
09/06/2005US6940798 Optical-disk reproducing apparatus, optical pickup apparatus and optical-disk recording and reproducing apparatus
09/06/2005US6940797 Apparatus and method of compensating for tilt and/or defocus of a disc during recording
09/06/2005US6940795 Information recording medium, information recording and reproduction method, and information recording and reproduction apparatus
09/06/2005US6940794 Information recording/reproducing apparatus that determines the number of recording layers of an information recording medium
09/06/2005US6940792 CLV optical disc, CLV optical disc format, and an optical disc medium recording and reproducing apparatus
09/06/2005US6940790 Write compensation for a multi-level data storage system
09/06/2005US6940789 Optical pickup device that corrects the spot shape of reflected light beams
09/06/2005US6940788 Disc apparatus and a method for activating a focusing servo
09/06/2005US6940671 System and method to determine the time domain equalized signal-to-noise ratio of a mass storage device
09/06/2005US6939485 Method for shaping optical storage discs and products thereof
09/06/2005US6939120 Disk alignment apparatus and method for patterned media production
09/06/2005US6938990 Fluid ejecting actuator for multiple nozzles of a printhead
09/06/2005US6938890 Objective lens for high-density optical focusing and an optical disk in an optical pickup
09/06/2005US6938825 Data system
09/06/2005US6938548 Printing sleeve noise reducer
09/06/2005CA2276212C Optical recording medium
09/01/2005WO2005081248A1 Data processing method, data processing device, information recording medium, and computer program
09/01/2005WO2005081242A1 Super resolution information storage medium, method of making reproducing signal stable, and apparatus for recording/reproducing data on/from the information storage medium
09/01/2005WO2005081241A1 Optical information recording medium and information recording/reproduction device
09/01/2005WO2005081240A2 Optical recording materials writable using blue lasers
09/01/2005WO2005081239A1 Optical recording materials having high storage density
09/01/2005WO2005081238A1 Optical device and optical pickup device
09/01/2005WO2005081237A1 Laser oscillation element and optical pickup device
09/01/2005WO2005081236A1 System for reducing feedback noise due to relaxation oscillation in optical data recording reproducing systems using optimized external cavity
09/01/2005WO2005081235A1 Anti-shock optical recording and reproducing device
09/01/2005WO2005081234A1 Optical pickup device, disk drive unit, and disk drive device
09/01/2005WO2005079509A2 Interactive multimedia smart affinity card
09/01/2005WO2005079432A2 Bookmark with integrated electronic timer and method therefor
09/01/2005WO2005079175A2 Method and apparatus for overwriting data in write-once recording medium
09/01/2005WO2005036302A9 Information protection system, storage medium used for the same, and storage medium containing case
09/01/2005WO2005004128A3 Objective lens, optical pick-up device, and optical disk device
09/01/2005US20050193406 Optical information storage apparatus and optical information storage system
09/01/2005US20050193405 Magnetic recording and reproducing device and magnetic recording medium
09/01/2005US20050193401 Disk protecting device for an optical recording and/or reproducing apparatus
09/01/2005US20050193399 Optical recording and/or reproducing apparatus with a buffer member
09/01/2005US20050192903 Method and apparatus for transmitting and receiving a decoding key encoded with specific information to decode encrypted information of a record medium
09/01/2005US20050191458 Cover sheet package
09/01/2005US20050191414 Method for producing optical information recording medium
09/01/2005US20050191410 Adhering dispersion liquid containing a fine-particles onto surface of the optical information medium on incident side of recording/reproducing beam; data processing; quantitative analysis of surface quality by use of artificial fingerprint liquid; antistaining