| 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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| 01/27/1987 | US4639907 Magneto-optical apparatus |
| 01/27/1987 | US4639745 Multilayer, light sensitive materials |
| 01/27/1987 | US4639660 Switching circuit for a power supply in a signal processing apparatus |
| 01/27/1987 | US4639329 Functional organic-inorganic composite amorphous material and process for its production |
| 01/27/1987 | CA1217197A1 Recording element having a pyrylium or thiopyrylium- squarylium dye layer and new pyrylium or thiopyrylium -squarylium compounds |
| 01/24/1987 | CN85102093A Apparatus for reproducing information from an optically readable record carrier |
| 01/24/1987 | CN85102054A Pickup positioning method and mechanism for optical disc playback system |
| 01/22/1987 | EP0067197A4 Optical disc and method of using same. |
| 01/22/1987 | DE3620331A1 Optical recording/reproducing device |
| 01/21/1987 | EP0209146A1 Focus search device in an optical type disc playback device |
| 01/21/1987 | EP0208703A1 Reading device for the optical scanning of information recorded on a movable disc-shaped medium |
| 01/21/1987 | CN86104490A Method and apparatus for recording and redisplaying imformation |
| 01/20/1987 | US4638471 Optical scanning unit comprising a translational-position and angular-position detection system for an electro-magnetically suspended objective |
| 01/20/1987 | US4638375 Video signal recording and reproducing apparatus |
| 01/20/1987 | US4638374 Defect detecting apparatus for a rotary recording medium |
| 01/20/1987 | US4638335 Optical recording member |
| 01/20/1987 | US4637976 Lasers, optical recording, multilayer, data processing |
| 01/20/1987 | US4637904 Process for molding a polymeric layer onto a substrate |
| 01/20/1987 | CA1216942A1 Multistate optical switching and memory using an amphoteric organic charge transfer material |
| 01/17/1987 | CN85102129A Optically readable storage disc |
| 01/17/1987 | CN85101944A Optical disc player |
| 01/17/1987 | CN85101886A Optically readable storage disc |
| 01/17/1987 | CN85101856A Apparatus for reproducing of optical information |
| 01/15/1987 | WO1987000341A1 Optical recording device |
| 01/15/1987 | WO1987000334A1 Reproduction of optical data storage media |
| 01/15/1987 | WO1987000333A1 Laser record-player provided with a protection shield |
| 01/15/1987 | DE3524184A1 Optically readable recording carrier |
| 01/14/1987 | EP0208538A1 Optical pickup with astigmatic focusing |
| 01/14/1987 | EP0208503A2 Signal recording disc |
| 01/14/1987 | EP0208212A1 Optical memory with sampled tracking for a pregrooved record carrier |
| 01/14/1987 | EP0208118A2 Optical data storage device |
| 01/14/1987 | CN85105409A Recording medium and its fabricating method for optical information |
| 01/13/1987 | US4637008 Optical erasable disk memory system utilizing duration modulated laser switching |
| 01/13/1987 | US4637006 Apparatus for producing digital information from a transmission medium |
| 01/13/1987 | US4637005 Focus servo device of a system for reading out recorded information |
| 01/13/1987 | US4637004 Optical data reading device |
| 01/13/1987 | US4637003 Amplitude modulated high frequency signal detection device |
| 01/13/1987 | US4636806 Lead and other oxides |
| 01/13/1987 | US4636804 Recording medium comprising a microporous polymer exhibiting enhanced signal to noise ratio |
| 01/13/1987 | US4636628 Optically recorded data reading apparatus with inclination controller |
| 01/13/1987 | US4636625 Method and device for detecting focal point |
| 01/13/1987 | US4636458 Storage disk made of para-methyl styrene |
| 01/10/1987 | EP0078831A4 Improved optical disc unit, and cooperating record/playback apparatus. |
| 01/10/1987 | CN85101969A Recording device for optical information |
| 01/10/1987 | CN85101844A Optoelectronic device |
| 01/10/1987 | CN85101681A Apparatus of recording information into and reading it out of a reflective recording disc |
| 01/10/1987 | CN85101430A Information recording and reproducing equipment |
| 01/08/1987 | DE3622590A1 Recording material for optical information |
| 01/08/1987 | DE3524048A1 Laser-plattenspieler mit einer schutzblende Laser turntable with a protective visor |
| 01/07/1987 | EP0207689A1 Disk player with blanking during fast scanning |
| 01/07/1987 | EP0207670A2 Optical disc |
| 01/07/1987 | EP0207517A2 Optical pickup apparatus |
| 01/07/1987 | EP0207374A2 Servo circuit for an information recording and/or reproducing apparatus |
| 01/07/1987 | EP0207317A2 Pigments, their preparation and their use |
| 01/07/1987 | EP0207164A1 Apparatus for recording and reproducing optical recording card |
| 01/07/1987 | EP0207163A1 Apparatus for reading optical recording cards |
| 01/06/1987 | US4635245 Frasable optical read/write data storage disc |
| 01/06/1987 | US4635244 Optical beam shaping system |
| 01/06/1987 | US4635243 Optical information processing apparatus |
| 01/06/1987 | US4635141 Method and apparatus for storing data on magnetic or optical media |
| 01/06/1987 | US4635076 Two-sided optical recording medium |
| 01/06/1987 | US4634853 Optical information reading apparatus |
| 01/06/1987 | US4634850 Quad density optical data system |
| 01/06/1987 | US4634617 Optical memory disc |
| 01/06/1987 | US4634386 Audio-visual teaching apparatus |
| 01/06/1987 | US4634232 Light source device for close spacing of two light beams |
| 12/30/1986 | US4633458 Disc-shaped, optically-readable information carrier having a protective edge and/or center part |
| 12/30/1986 | US4633457 Optical information reading apparatus |
| 12/30/1986 | US4633456 Two axis electromagnetic actuator |
| 12/30/1986 | US4633455 Headwheel for a multiple beam optical tape playback system |
| 12/30/1986 | US4633454 Optical information pickup apparatus |
| 12/30/1986 | US4633453 Optical disc players |
| 12/30/1986 | US4633450 Optical focusing apparatus for the reading of a data medium moving past it |
| 12/30/1986 | US4633329 Information signal recording medium and reproducing apparatus therefor |
| 12/30/1986 | US4633273 Information recording medium including antimony-selenium compounds |
| 12/30/1986 | US4632898 Etching a photoresist-developed, metal-masked glass surface |
| 12/30/1986 | US4632546 Grooved surface defect detection apparatus |
| 12/30/1986 | EP0206824A2 Apparatus for thermally recording data |
| 12/30/1986 | EP0206642A2 Optical memory semiconductor laser |
| 12/30/1986 | EP0206397A1 Replica lens |
| 12/30/1986 | EP0206396A1 Optical scanning unit comprising a translational-position and angular-position detection system for an electro-magnetically suspended objective |
| 12/30/1986 | EP0206392A1 Cassette containing a recording carrier in tape form |
| 12/30/1986 | EP0206363A1 Position-sensitive radiation detector |
| 12/30/1986 | EP0206338A2 Light modulator |
| 12/30/1986 | EP0205940A1 Optical system for guiding the read-out beam in a magneto-optical memory |
| 12/30/1986 | EP0205677A1 Memory device |
| 12/30/1986 | EP0205533A1 Method and apparatus for handling information |
| 12/30/1986 | EP0077641B1 Method for improved focusing control in an optical memory system |
| 12/23/1986 | US4631714 Apparatus for furnishing data signals from an optically readable record carrier at the same frequency as the associated subcode signals |
| 12/23/1986 | US4631713 Calibration device of the optical power applied to an optical disc for recording of data |
| 12/23/1986 | US4631712 Optical disk apparatus with beam energy correction for deviations in inclination |
| 12/23/1986 | US4631706 System for preventing the overwriting of previously optically recorded data and for reading optically recorded data during writing |
| 12/23/1986 | US4631600 Time-axis correcting circuit for recorded data reproducing device |
| 12/23/1986 | US4631397 Focussing error detecting apparatus employing a composite lens |
| 12/23/1986 | US4631396 Focus error detection device |
| 12/23/1986 | US4631395 Optical apparatus for detecting the focusing state and positional accuracy of a light beam directed onto an optical disk tracking guide in an optical read/write system |
| 12/23/1986 | US4631334 Optical articles of branched polycarbonate resin |
| 12/23/1986 | CA1215650A1 Disc-shaped, optically-readable information carrier having a protective edge and/or centre part |
| 12/18/1986 | WO1986007486A1 Apparatus for controlling tracking of an optical pickup |
| 12/18/1986 | WO1986007485A1 Process for track jumping in track search processes and circuit arrangement for implementation of the process |