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)
10/1995
10/03/1995CA2028942C Track jump control circuit
10/03/1995CA2017284C Optical recording medium
10/03/1995CA1337194C Tetraazaporphin, process for producing the same, as well as optical recording media using the same and production processes thereof
09/1995
09/28/1995WO1995026026A1 Reading/writing information on a storage medium
09/28/1995DE4409851A1 Inscribing and reading information in information storage layer
09/27/1995EP0674366A2 A microfine light source
09/27/1995EP0674316A2 Optical disk and method and apparatus for recording and then playing information back from that disk
09/27/1995EP0674314A1 A data recording medium, an optical disk and an optical disk apparatus
09/27/1995EP0674311A2 Circuit for discriminating pre-mastered pits and pre-mastered grooves on optical disk
09/27/1995EP0674309A1 Optical disk
09/27/1995EP0674308A2 Optical recording/reproducing apparatus for a card
09/27/1995CN1109107A A method of coating a workpiece of a plastic material by a metal layer
09/27/1995CN1108994A Injection mold
09/26/1995US5453975 Optical disc with surface coating and manufacturing method therefor
09/26/1995US5453974 Optical disk substrate, method for initialization thereof and driving apparatus for initialization of said optical disk
09/26/1995US5453972 Optical disk apparatus
09/26/1995US5453971 Recorded area detection to prevent information overwriting
09/26/1995US5453969 Optical memory with pit depth encoding
09/26/1995US5453968 Methods of and information recording devices for recording and/or inhibiting recording of an information signal having copy bits with logic values which alternate in accordance with a pattern
09/26/1995US5453964 Data processing circuit for disc player
09/26/1995US5453963 Magneto-optical head system for detection of error and information signals by diffraction lights
09/26/1995US5453962 Focus error detecting device
09/26/1995US5453961 Pick-up device for optical disk readout using waveguide gratings
09/26/1995US5453884 Magneto-optical recording medium
09/26/1995US5453881 Objective lens holding device
09/26/1995US5453802 Method and apparatus for photographically recording digital audio and a medium having photographically recorded digital sountracks
09/26/1995US5453607 Photodetector for recording/reproducing apparatus for both read only and magneto-optical disk shaped recording medium
09/26/1995US5453606 Apparatus for adjusting the optical axis of an optical system
09/26/1995US5453346 Optical information recording medium having protection layers with different properties on both sides of an optical active layer
09/26/1995CA2051193C Information recording apparatus
09/26/1995CA2046705C Controls for optical disk relating to accessing and utilization of such disk
09/26/1995CA2046704C Optical disk recorder for diverse media types and having a predetermined initialization or start-up procedure
09/26/1995CA2039351C Controlling position of a rotatable transducer in devices employing such transducers
09/26/1995CA2037582C Cycloolefin random copolymer and process for preparing same
09/21/1995DE4408517A1 Assembly for processing compact discs at workstation
09/20/1995EP0673034A2 Optical disk and method and apparatus for recording and then playing information back from that disk
09/20/1995EP0673030A1 Optical disk recording device
09/20/1995EP0673029A1 Recording medium, signal recording apparatus thereof, and signal reproducing apparatus thereof
09/20/1995EP0673028A2 Recording medium, signal recording apparatus thereof, and signal reproducing apparatus thereof
09/20/1995EP0673027A2 Recording medium and method for recording a signal thereon
09/20/1995EP0672595A1 Device for transporting substrates
09/20/1995EP0591519B1 Stabilizers for cyanine ir dyes
09/20/1995EP0417277B1 Disk recording/reproducing apparatus and disk recording/reproducing method
09/20/1995CN1029805C Multiple data surface data storage system and method
09/19/1995US5452312 Short-wavelength laser light source and optical information processing aparatus
09/19/1995US5452285 Uniformly distributed servo data for optical information storage medium
09/19/1995US5452284 Optical recording/reproducing medium and apparatus using land and groove encoded information signals and identification signals including position information
09/19/1995US5452283 Lens/mirror tower for an optical storage device
09/19/1995US5452282 Optical data storage disc
09/19/1995US5452279 Information recording/reproducing apparatus for recording and reproducing information in accordance with mark interval recording scheme or mark length recording scheme
09/19/1995US5452278 Disc recognizing method for an optical disc playback apparatus
09/19/1995US5452276 Tracking regulation circuit including apparatus for disabling coarse drive signals
09/19/1995US5452275 Two-stage actuator control device
09/19/1995US5452273 Optical recording method and apparatus therefor
09/19/1995US5452272 Magneto-optical recording and reproducing device having light interrupting forming main robe and side robe light beam portions
09/19/1995US5451775 Apparatus for detecting galvonmeter mirror movement of optical disc tracking servo system
09/19/1995US5451155 Installation for manufacturing registration carriers
09/14/1995WO1995024618A2 Device for raising the frequency of electromagnetic radiation
09/13/1995EP0671742A1 Signalization of types of defects of an optical information carrier
09/13/1995EP0671734A1 Optical device
09/13/1995EP0671733A1 Spin-coating compensation for an optical storage medium with a substrate groove profile gradient
09/13/1995EP0671732A1 Optical pickup
09/13/1995EP0671731A1 Information recording apparatus and information recording method
09/13/1995EP0526647B1 Optical recording medium
09/13/1995CN1108416A Compatible optical read device
09/12/1995US5450597 Method and apparatus for synchronizing midi data stored in sub-channel of CD-ROM disc main channel audio data
09/12/1995US5450390 Method and apparatus for writing and reading information and storage medium used for the same
09/12/1995US5450389 Digital signal reproducing apparatus for reducing the adverse influence of asymmetry
09/12/1995US5450388 Method for correcting tracking errors in a disc record reproduction apparatus
09/12/1995US5450387 Optical pickup apparatus for phase changing optical disk
09/12/1995US5450386 Optical disk device including a support member for movably supporting an objective lens in focusing and radial directions with respect to an optical disk
09/12/1995US5450384 Method of accessing tracks on an optical disk surface
09/12/1995US5450383 Monitoring and adjusting laser write power in an optical disk recorder using pulse-width modulated power level checking signals
09/12/1995US5450381 Magneto-optical recording utilizing signal phase adjustment
09/12/1995US5450380 Optical disk having an SiO2 coating
09/12/1995US5450378 Holographic elements for an optical recording system
09/12/1995US5450376 Optical information recording/reproduction apparatus with super-resolution optical filter
09/12/1995US5450237 Hyperresolution optical system
09/12/1995US5450228 Read-write head for an optical tape recorder
09/12/1995US5450146 High fidelity reproduction device for cinema sound
09/12/1995US5449926 High density LED arrays with semiconductor interconnects
09/12/1995US5449590 Multilayer
09/12/1995US5449589 Method of making an optical information recording medium and method of recording/reproducing optical information
09/12/1995US5449587 Compact disk-write once type optical recording media
09/12/1995CA1336940C Near infrared absorbing composition and material and product containing same
09/08/1995WO1995024039A1 Cleaning device
09/06/1995EP0670555A1 Dot code and information recording/reproducing system for recording/reproducing dot code
09/05/1995US5448553 Plastic hub containing a magnetic material and method of its manufacture
09/05/1995US5448552 Super resolution information reproduction by tracking address information in normal resolution
09/05/1995US5448551 Optical information recording media and optical information read/write device
09/05/1995US5448550 Selecting sectors in a storage medium
09/05/1995US5448548 Optical information reading method for reducing laser noise using a semiconductor laser and a driving device for the semiconductor laser
09/05/1995US5448547 Information recording discs
09/05/1995US5448546 Optical storage media light beam positioning system
09/05/1995US5448544 Data recording/playback apparatus and signal processing method
09/05/1995US5448543 Apparatus for reproducing data from a regenerative signal using a PLH circuit having loop gain control
09/05/1995US5448542 Optical information recording and reproducing apparatus including a computing unit for calculating tracking and focusing error correction values
09/05/1995US5448541 Method of use for an optical recording disk with a dye-containing recording layer and a tracking guide groove
09/05/1995US5448539 Optical recording and reproducing apparatus
09/05/1995US5448537 Magnet-optical disc drive device with sure disc placement