| 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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| 04/28/1987 | US4661944 Optical recording/playback apparatus having a focusing control system with reduced spot-offset sensitivity |
| 04/28/1987 | US4661943 Optical data reader |
| 04/28/1987 | US4661942 Control apparatus for information storage and retrieval system |
| 04/28/1987 | US4661941 Optical video or data tape record and playback apparatus |
| 04/28/1987 | US4661940 Optical disc player |
| 04/28/1987 | US4660941 Light deflection apparatus |
| 04/28/1987 | CA1221168A1 Improvements in sterophonic motion picture sound-tracks compatible with different sound projection formats and record and playback apparatus therefor |
| 04/28/1987 | CA1221167A1 Improvements in apparatus for reproducing motion picture film photographic sound-tracks to correct reproduction errors and reduce noise |
| 04/28/1987 | CA1221166A1 Method for optically encoding digital data on a substrate and the data record carrier formed thereby |
| 04/23/1987 | WO1987002499A1 Apparatus for recording and reading optical data marks on an optical medium |
| 04/22/1987 | EP0219261A2 Information recording and reproducing apparatus |
| 04/22/1987 | EP0219170A1 Apparatus for reading and/or recording a trackwise arranged optical information structure |
| 04/22/1987 | EP0219124A2 Beam controller for magneto-optical disc memory system |
| 04/22/1987 | EP0219012A2 Data carrier with an optical authenticity feature, and method of making and checking the data carrier |
| 04/22/1987 | EP0219011A2 Identity card with a visually detectable authenticity feature, and method of making it |
| 04/22/1987 | EP0218985A2 Assembly of transducer and support therefor |
| 04/22/1987 | EP0218634A1 Optical reader for printed bit-encoded data and method of reading same |
| 04/21/1987 | US4660191 Tracking signal error generator for optical information devices |
| 04/21/1987 | US4660190 Optical focus position control in optical disc apparatus |
| 04/21/1987 | US4660189 Optical disk player having reduced laser output during track changes |
| 04/21/1987 | US4660175 Chalcogens; germanium oxide and suboxide dielectric |
| 04/21/1987 | US4660096 Dividing high-resolution-camera video signal response into sub-image blocks individually raster scanned |
| 04/21/1987 | US4660094 Method for focus adjustment of a picture scanning and recording system |
| 04/21/1987 | US4659972 Servo system for positioning and driving a movable member using two reference voltages |
| 04/21/1987 | US4659620 Information medium adapted to be written by thermo-optical means and method of manufacturing same |
| 04/21/1987 | US4659588 Method of producing optical recording medium |
| 04/21/1987 | US4659407 Process for manufacturing optical disks by pressing |
| 04/21/1987 | US4659177 Organic nonlinear optical media |
| 04/21/1987 | US4659172 Rotatable and translatable mounting mechanism for a specimen pattern in optical processing apparatus |
| 04/21/1987 | CA1220860A1 Information recording medium |
| 04/15/1987 | EP0218572A1 Apparatus and method for controlling the reproduction of recorded information |
| 04/15/1987 | EP0218380A1 Optical recording medium with pre-groove |
| 04/15/1987 | EP0218276A1 Optically readable information disc |
| 04/15/1987 | EP0218263A2 Laser information recording medium having an improved recording layer |
| 04/15/1987 | EP0218250A2 Optical head |
| 04/15/1987 | EP0218243A2 Data recording and reproducing apparatus |
| 04/15/1987 | EP0218214A2 Disk apparatus |
| 04/14/1987 | US4658393 Optical memory disc |
| 04/14/1987 | US4658392 Optically readable, high storage density, information carrier |
| 04/14/1987 | US4658391 Focus error detection device for an optical recording/playing back system |
| 04/14/1987 | US4658390 Optical focus position control in an optical memory system |
| 04/14/1987 | US4658389 Track follower system for correcting tangent errors in an optical record scanning system |
| 04/14/1987 | US4658388 Optical recording medium which includes a corrosion resistant film of a mixture of a carbide and a nitride |
| 04/14/1987 | US4658146 Extended cavity laser readout apparatus |
| 04/14/1987 | US4657840 Graphic arts imaging constructions using vapor-deposited layers |
| 04/14/1987 | US4657714 Method and press molding apparatus for forming information carrier discs of granular thermoplastic material |
| 04/14/1987 | US4657360 Optical system for making an annular beam |
| 04/14/1987 | CA1220552A1 Information recording medium |
| 04/14/1987 | CA1220551A1 Arrangement for error detection for disc-shaped information carriers |
| 04/09/1987 | WO1987002174A1 Automatic focus tripping device |
| 04/09/1987 | WO1987002146A1 Method of manufacturing gradient index lens |
| 04/08/1987 | EP0217460A1 Apparatus for reading information from a record carrier |
| 04/08/1987 | EP0217332A2 Light beam scanning read-out apparatus and recording apparatus |
| 04/08/1987 | EP0217293A1 Use of compositions as reversible optical information media |
| 04/08/1987 | EP0217245A2 Optical data storage medium based on methine dyes and anionic methine dyes |
| 04/08/1987 | EP0216915A1 Process for fabricating optical recording disk |
| 04/08/1987 | EP0216859A1 Printed data strip including bit-encoded information and scanner control |
| 04/08/1987 | EP0098296B1 Optical recording media |
| 04/07/1987 | US4656618 Optical information recording and reproducing apparatus |
| 04/07/1987 | US4656617 Start-control method and circuit for optical disc play-back system |
| 04/07/1987 | US4656348 Optical head |
| 04/07/1987 | US4656346 System for optically reading and annotating text on a data card |
| 04/07/1987 | US4656121 Methine dyes, heat, light stability |
| 04/07/1987 | US4656118 Information recording medium using laser beam |
| 04/07/1987 | US4656079 Reversible optical information recording medium |
| 04/07/1987 | US4655876 Lasers, etching, sputtering |
| 04/02/1987 | DE3633238A1 Video storage disc and operating device for it |
| 04/02/1987 | DE3632229A1 Optical head |
| 04/01/1987 | EP0216704A2 Optical writing and reading method and optical writing and reading apparatus |
| 04/01/1987 | EP0216637A2 Reflection-type skew detector and method for detecting skewness utilizing the same |
| 04/01/1987 | EP0216634A1 Optical memory element |
| 04/01/1987 | EP0216619A1 Recording medium |
| 04/01/1987 | EP0216495A2 Error signal detecting device |
| 04/01/1987 | EP0216341A2 Tracking system for optical disc memory |
| 04/01/1987 | EP0216294A2 Method for writing data in optical recording medium |
| 04/01/1987 | EP0215944A1 Process for fabricating glass tooling |
| 04/01/1987 | EP0215895A1 Data registration medium |
| 04/01/1987 | EP0215867A1 Circuit arrangement for a playback device for audio or video discs. |
| 04/01/1987 | CN85103580A "data-storage disc and playback system therefor" |
| 03/31/1987 | US4654839 Optical head |
| 03/31/1987 | US4654838 Signal detecting system for use in optical reading apparatus |
| 03/31/1987 | US4654519 Optical head |
| 03/31/1987 | US4654516 Optical head |
| 03/31/1987 | US4654515 Optical head for focussing a light beam on an information recording medium |
| 03/31/1987 | US4653856 Support construction for optical systems |
| 03/31/1987 | CA1219952A1 Optical disk player |
| 03/25/1987 | EP0215556A2 Record carrier and tracking signal generator circuit |
| 03/25/1987 | EP0215498A1 Optical-scanning unit |
| 03/25/1987 | EP0215311A2 Laser diode driving circuit |
| 03/25/1987 | EP0215222A2 Optical recording element having a smoothing layer |
| 03/25/1987 | EP0215184A2 Data processing peripheral subsystems having a controller and a plurality of peripheral devices |
| 03/25/1987 | CN85106617A Information recording medium disk and its preparing method |
| 03/25/1987 | CN85105407A Sound generator for electronic musical instrument |
| 03/24/1987 | US4653024 Projected beam switching |
| 03/24/1987 | US4652737 Sampled optical focus error detecting system for rotating optical media |
| 03/24/1987 | US4652514 Optical information recording medium |
| 03/24/1987 | US4652498 Unsaturated phosphate ester copolymer |
| 03/24/1987 | CA1219572A1 Optical recording medium of high sensitivity |
| 03/24/1987 | CA1219507A1 Cover assembly for optical recording medium |
| 03/19/1987 | DE3627984A1 Optical head |