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)
07/1994
07/13/1994EP0605891A2 Recordable optical element using low absorption materials
07/13/1994EP0535157A4 Method and apparatus for storing text data in subcode packs
07/13/1994CN1089365A Waveform shaping method and apparatus for optical recording
07/12/1994US5329517 Optical information recording and reproducing apparatus utilizing a plurality of recording light spots
07/12/1994US5329512 Temperature detection of a magneto-optic recording medium for controlling irradiation of an erasure region
07/12/1994US5329511 Optical head cleaning cartridge
07/12/1994US5329509 Optical disk unit
07/12/1994US5329508 Regenerating device for optical recording medium in which overlapping regions are read out by a light beam in a time sharing manner to provide servo control of the positional relationship between the light beam and the medium
07/12/1994US5329507 Solid state optical disk reader
07/12/1994US5328994 Azinoneutromethines
07/12/1994US5328816 Process for producing optical recording medium
07/12/1994US5328813 Method for the preparation of optical recording media containing overcoat
07/12/1994US5328802 Multilayer containing a cyanine dye and metal complex quencher
07/12/1994US5328741 Optical recording medium
07/12/1994US5328740 Magneto-optical recording medium and method for processing the surface
07/07/1994WO1994015334A1 Data recording medium, recorder, reader and recording method
07/07/1994WO1994015333A1 Waveform shaping method and apparatus for optical recording
07/07/1994WO1994015319A1 Identity card with a visible authenticating mark and a process for manufacturing the same
07/07/1994WO1994014998A1 Protective film for articles and method
07/06/1994EP0605239A1 Information recording and/or reproducing apparatus
07/06/1994EP0605222A1 Disc data reproducing apparatus and signal processing circuit
07/06/1994EP0605125A2 Two-sided optical disks and devices for using the disks
07/06/1994EP0605025A1 Injection moulding or injection-compression moulding machine
07/06/1994EP0604517A1 Recovering audio signals from a variable-area optical record.
07/06/1994EP0604424A1 Vapour deposition.
07/06/1994CN1089051A Unit for driving of objective
07/05/1994US5327417 Optical disk drive and read/write apparatus
07/05/1994US5327416 Surface selection mechanism for optical storage system
07/05/1994US5327414 Signal recording method for optical disk and apparatus therefor
07/05/1994US5327413 Ruggedized homogeneous thin dielectric film focus sensor
07/05/1994US5327411 Write control method and apparatus for writing optical disk data
07/05/1994US5327410 Direction-determination logic as for a signal pickup in recorded signal recovery apparatus
07/05/1994US5327408 Optical disk with sector servo patterns compensating for variations in pattern size and/or radial velocity
07/05/1994US5327407 Tracking control apparatus for generating sawtooth tracking control signal from sinusoidal tracking error signal
07/05/1994US5327406 Data recording method and data recording medium
07/05/1994US5327182 Method and apparatus for reading photographically recorded digital audio soundtracks
07/05/1994US5327124 Method of secondary modulation of a train of recorded data
07/05/1994US5326679 Light absorbing layer having cyanine dyes and quencher compounds
07/05/1994US5326678 Nonionic dye
07/05/1994US5326677 Optical retrieval apparatus using a tellurium (IV) leuco dye
07/05/1994US5326676 Indoaniline
07/05/1994US5326661 Polysiloxanes, polysilanes, addition polymers with pendant groups
07/05/1994US5326660 Erasable optical recording media
07/05/1994US5326240 Metal mold device for molding a disc substrate
07/05/1994CA1330591C Recording system as well as record carrier and recording apparatus for use in the system
07/05/1994CA1330495C Opto-electronic focussing-error detection system
06/1994
06/30/1994DE4344932A1 Disc appts., e.g. for CD or mini=disc
06/29/1994EP0604335A1 Athermalized beam source and collimator lens assembly
06/29/1994EP0604328A1 Passively athermalized optical assembly incorporating laminate fiber compensation ring
06/29/1994EP0604063A2 Optical information reproduction apparatus and optical information reproduction method
06/29/1994EP0603968A1 Focus offset optimization for reading optically recorded data
06/29/1994EP0603949A1 Data recorder with segment synchronization
06/29/1994EP0603842A1 Optical recording device and optical reproduction device
06/29/1994EP0603779A1 Optical recording medium
06/29/1994EP0603685A2 Recording system for a singalong disc player
06/29/1994EP0603458A1 Optical head assembly for optical information player
06/29/1994EP0603274A1 Optical elements and a method of producing them
06/29/1994EP0544731B1 Optical scanning device
06/29/1994EP0494879B1 Coil arrangement for a focussing or track control circuit
06/29/1994EP0294489B1 Optical disc and optical disc unit
06/29/1994CN1088593A Process for the preparation of polycarbonates
06/29/1994CN1025255C Disc shape recording medium and apparatus of recording and playing
06/28/1994US5325353 Optical recording medium
06/28/1994US5325352 Recording of mastering information for performing a disc mastering process
06/28/1994US5325351 Optical recording medium having a reflective layer made of Cu-Ag or Cu-Au alloy
06/28/1994US5325348 Wavelength converting element and system for recording and reproducing optical information
06/28/1994US5325347 Data recording method and data reproducing apparatus with contiguous data recording
06/28/1994US5325346 Digital servo apparatus for optical disc player
06/28/1994US5325342 Surface-enhanced raman optical data storage system
06/28/1994US5325324 Three-dimensional optical memory
06/28/1994US5325116 Device for writing to and reading from optical storage media
06/28/1994US5324926 Optical card having alternative information record region
06/28/1994US5324548 Method for making optical recording mediums
06/28/1994US5324188 Roller stamper for molding a substrate sheet to become an information recording medium
06/28/1994US5324087 Sucked substrate detecting apparatus
06/28/1994CA1330464C Active energy ray-curable composition and optical recording medium having cured product of the composition
06/28/1994CA1330435C Substituted phthalocyanine
06/26/1994CA2111646A1 Optical recording medium
06/23/1994WO1994014161A1 Protective covers for optical discs
06/23/1994WO1994014159A1 Disk recording medium and reproduction method and apparatus thereof
06/23/1994WO1994014092A1 Methods and devices for using photorefractive materials at infrared wavelengths
06/23/1994DE4243234A1 Recording and reproduction appts., e.g. CD player
06/22/1994EP0603171A2 Apparatus and method for recording information on an optical recording medium
06/22/1994EP0603168A2 System for recording digital data
06/22/1994EP0602720A1 Scanning device and optical player comprising the scanning device
06/22/1994EP0602677A2 Magnet-optical disc drive device
06/22/1994EP0548120B1 Process and device for adjusting radial and tangential angles of light beams
06/22/1994EP0485448B1 Magneto-optical recording and/or reproducing device
06/22/1994CN1088342A Disk recording medium and reproducing method and apparatus thereof
06/22/1994CA2085974A1 Multi-bit cellular reflectivity modulation for optical media
06/21/1994US5323380 Information recording disc and system
06/21/1994US5323378 Compact optical pickup
06/21/1994US5323374 Method of magneto-optical recording
06/21/1994US5323373 Optical pickup device
06/21/1994US5323372 Method of optical writing and reading on information carrier with high density storage
06/21/1994US5323369 Objective lens driving apparatus designed to minimize rolling effects of an optical pick-up
06/21/1994US5323368 Track crossing apparatus and method using the difference between pick-up velocity and a predetermined velocity
06/21/1994US5323365 Recording method for opto-magnetic disk
06/21/1994US5322993 Tilt-error detector
06/21/1994US5322900 Polystyrene and ethyl methacrylate homo- or copolymer