| 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) |
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| 08/03/1993 | US5233593 Method of high speed searching for a desired tape portion in a digital audio tape recorder |
| 08/03/1993 | US5233592 Method for detecting starting position of data recording block |
| 08/03/1993 | US5233590 Optical recording/reproducing apparatus including means for synchronizing the phase of a data read clock signal with data recorded on an optical recording medium |
| 08/03/1993 | US5233589 Method for recording/reproducing information having a function of correcting variations in the interval in reproduced data and apparatus for realizing same |
| 08/03/1993 | US5233588 Disk reproduction apparatus and method for searching thereof |
| 08/03/1993 | US5233587 Rotary-type optical head |
| 08/03/1993 | US5233586 Servo control system for controlling tracking of an optical head on an optical disk |
| 08/03/1993 | US5233585 Acquiring focus in an optical disk system using a time and shape modified focus error signal |
| 08/03/1993 | US5233584 Optical disk device using high and low data-sensing criteria plus device recalibration for error control |
| 08/03/1993 | US5233583 Tracking and reading system for an optical medium and medium for use therewith |
| 08/03/1993 | US5233582 Optical waveguide recording medium playing apparatus |
| 08/03/1993 | US5233581 Optical-head drive |
| 08/03/1993 | US5233580 Laser diode unit welded to a mounting member by laser light |
| 08/03/1993 | US5233578 Method of recording information on a recording medium having at least two magnetic layers |
| 08/03/1993 | US5233487 Functional measurement of data head misregistration |
| 08/03/1993 | US5233466 Astigmatism generating device |
| 08/03/1993 | US5233444 Focus error detecting apparatus |
| 08/03/1993 | US5233438 Entertainment apparatus for producing orchestral music accompaniment and a selected background video |
| 08/03/1993 | US5233175 Laser power control independent of beamsplitter transmissivity |
| 08/03/1993 | US5232820 Process of directly imaging a thermosensitive polyacetylene salt dyes |
| 08/03/1993 | US5232757 Mixture of two azaannulene compounds |
| 08/03/1993 | US5232511 Dynamic semiconductor wafer processing using homogeneous mixed acid vapors |
| 08/03/1993 | US5232505 Apparatus for the automatic casting, coating, varnishing, testing and sorting of workpieces |
| 08/03/1993 | CA1321022C System for obtaining optimum focusing position in optical disc system |
| 07/31/1993 | CA2060362A1 Deposition of highly oriented ptfe films and uses therefor |
| 07/29/1993 | DE4302384A1 Compact disk and CD-ROM disc mfg. process - using injection moulding process with matrix having centre hole and information signal surface |
| 07/29/1993 | DE4301909A1 Optical disc and CD-ROM lens transport and focussing system - provides movement of lens under coil drive in focussing plane and along data track |
| 07/28/1993 | EP0553013A1 Method of producing dies, particularly for the manufacture of optical disks |
| 07/28/1993 | EP0552986A2 CD Player |
| 07/28/1993 | EP0552943A1 Master plate of optical memory device and manfacturing method thereof |
| 07/28/1993 | EP0552936A1 Optical medium recording apparatus and method |
| 07/28/1993 | EP0552903A2 Data transmitting apparatus and data reproducing apparatus |
| 07/28/1993 | EP0552887A1 Recording medium and information recording and reproducing apparatus therefor |
| 07/28/1993 | EP0552806A2 Data recording and reproducing apparatus |
| 07/28/1993 | EP0552764A2 An optical data recording apparatus and an optical data recording/reproducing method performing servo control of a recording light beam |
| 07/28/1993 | EP0552636A1 Method of manufacturing a recording medium |
| 07/28/1993 | CN1074777A Reversible phase change photo recording medium initiated by electrons, photons |
| 07/27/1993 | US5231627 Apparatus for reading optically encoded soundtracks |
| 07/27/1993 | US5231626 Wavelength selective optical recording and reproducing method |
| 07/27/1993 | US5231625 Optical disk drive wherein a preset reading laser power is used to generate a desired white laser power |
| 07/27/1993 | US5231624 System and method using a reduce profile light beam for high density recording on optical media |
| 07/27/1993 | US5231621 Focus detector which serves to split off a portion of a detected light beam only when the detected light beam is not refocused at an expected refocus point |
| 07/27/1993 | US5231620 Magneto-optical recording/reproducing apparatus with light beam splitting means |
| 07/27/1993 | US5231619 Optical disk apparatus having improved tracking servo mechanism |
| 07/27/1993 | US5231618 Optical disc system |
| 07/27/1993 | US5231617 Optical information recording and reproducing apparatus and method of recording and reproducing information in an optical disk unit |
| 07/27/1993 | US5231615 Carriage fixing apparatus and disk driver having such carriage fixing apparatus |
| 07/27/1993 | US5231541 Driver for optical system |
| 07/27/1993 | US5231280 Focusing error detection apparatus using a first and second knife edge at different positions |
| 07/27/1993 | US5231262 Optical cutting method and optical cutter |
| 07/27/1993 | US5231190 Squarylium compounds, and processes and intermediates for the synthesis of these compounds |
| 07/27/1993 | US5231173 Disazo metal chelate compounds for optical recording media |
| 07/27/1993 | US5230973 Laser power converting intermetallic from amorphous to crystal structure |
| 07/27/1993 | US5230770 Making method for high-density optical disk |
| 07/25/1993 | CA2087684A1 Method for making stampers, particularly for optical discs |
| 07/22/1993 | WO1993014497A1 Optical data recording/reproducing apparatus |
| 07/21/1993 | EP0551966A2 Recording device and reproducing device |
| 07/21/1993 | EP0551965A2 Recording device and reproducing device |
| 07/21/1993 | EP0551964A2 Recording device and reproducing device |
| 07/21/1993 | EP0551923A2 Consensus sync" data-sampling systems and methods |
| 07/21/1993 | EP0551869A1 Method of and apparatus for producing disc subtrate |
| 07/21/1993 | EP0551753A1 Optical recording medium, apparatus for reproducing the same and method of recording and reproducing the same |
| 07/21/1993 | EP0551744A1 Optical disc and method for manufacturing the same |
| 07/21/1993 | CN1021678C Semiconductor device comprising radiation sensitive element |
| 07/21/1993 | CN1021677C Photosensitive semiconductor device |
| 07/20/1993 | US5229986 Data recording/reproducing device |
| 07/20/1993 | US5229985 Data recording/reproducing apparatus capable of detecting data recording state |
| 07/20/1993 | US5229984 Signal producing apparatus for optical recording/reproducing apparatus for suppressing noises caused by leaking current of photodetector |
| 07/20/1993 | US5229620 System for integrated tape hole detection by detecting an edge of the tape and/or a pattern on the tape |
| 07/20/1993 | US5229507 Substituted naphthalocyanines and their use |
| 07/20/1993 | CA1320574C Tracking device for optical memory card |
| 07/20/1993 | CA1320573C Optical information recording medium |
| 07/20/1993 | CA1320572C Tracking device for optical memory card |
| 07/20/1993 | CA1320571C Method for affixing information of read-only optical disks |
| 07/20/1993 | CA1320374C Apparatus and method for reproducing a pattern in an annular area |
| 07/15/1993 | DE4243067A1 Drive system for focal lens for disc systems - has lens in holder supported from pivot point and integral hinge with electromagnetic actuator for axial movement. |
| 07/14/1993 | EP0551194A2 Optical disk apparatus |
| 07/14/1993 | EP0551190A2 Optical data storage system with reduced particle contamination |
| 07/14/1993 | EP0551072A1 Optical Tape |
| 07/14/1993 | EP0551071A1 Optical tape |
| 07/14/1993 | EP0550929A1 Optical device and apparatus for scanning an information plane, comprising such an optical device |
| 07/14/1993 | CN1074170A Metal mold device for molding a disc substrate and method for fabrication of disc substrate |
| 07/13/1993 | US5228063 Circuit arrangement for automatic gain control |
| 07/13/1993 | US5228024 Magneto-optical disk possessing enhanced anti-reflective and anti-oxidative properties |
| 07/13/1993 | US5228020 System for detecting rotational deviation of a rotary recording medium and an apparatus for reproducing a signal from the recording medium |
| 07/13/1993 | US5228019 Method and apparatus for measuring speed of movement during beam track movement in optical memory apparatus |
| 07/13/1993 | US5228018 Optical information recording/reproducing apparatus with tracking off-set correction |
| 07/13/1993 | US5228017 Optical system drive apparatus for an optical recording/reproducing apparatus |
| 07/13/1993 | US5228001 Optical random access memory |
| 07/13/1993 | US5227226 Technical cleaning card and kit |
| 07/13/1993 | US5227213 Hot melt adhesive crosslinkable by ultraviolet irradiation, optical disc using the same and process for preparing thereof |
| 07/13/1993 | CA1320272C Apparatus for optically recording and reproducing information |
| 07/13/1993 | CA1320268C Information record medium having an area for recording information indicating logical erasure of data and method for recording information on the same |
| 07/08/1993 | WO1993013525A1 Optical recording medium and reading/writing apparatus therefor |
| 07/08/1993 | WO1993013522A1 Wide beam detector system for optical memories |
| 07/08/1993 | WO1993013521A1 Optical recording apparatus |
| 07/08/1993 | WO1993013493A1 System for reading optical recording medium |
| 07/08/1993 | WO1993013492A1 Device for reading data of optical card |
| 07/08/1993 | WO1993013457A1 Digital sound system for motion pictures with analog sound track emulation |
| 07/08/1993 | WO1993013406A1 Apparatus for discriminating defects in an optical recording medium and method thereof |