| 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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| 06/21/1977 | US4030815 Hydrostatic bearing apparatus |
| 06/07/1977 | US4027952 Single optical lens with large aperture and large field |
| 05/31/1977 | US4027330 Disc recording |
| 05/24/1977 | US4025949 Symmetrical astigmatic focus sensing system |
| 05/24/1977 | US4025784 Device for detecting focussing error in an optical reader head |
| 05/24/1977 | US4025731 Optical record, and associated recording and reading-out devices |
| 05/10/1977 | US4023185 Ablative optical recording medium |
| 05/10/1977 | US4023033 Optical focussing device |
| 05/10/1977 | US4023010 Optical identification system and reader for reading optical gratings on a record medium |
| 05/10/1977 | US4022986 Playback unit for a long-playing record of a time division multiplexed audio signal |
| 05/03/1977 | US4021606 Hologram apparatus |
| 05/03/1977 | US4021101 Optical focussing device for focussing a radiation beam |
| 05/03/1977 | US4021096 Electrodynamically controllable pivoting mirror device |
| 04/26/1977 | US4020278 Data carrier for optical read-out |
| 04/19/1977 | US4018984 Video disc record having spirally aligned sync storage locations |
| 03/15/1977 | US4012108 Hologram memory apparatus |
| 03/08/1977 | US4011400 Apparatus for reading an optically readable reflecting information structure |
| 03/01/1977 | US4010317 Apparatus for reading a record carrier in which information, for example video and/or audio information, is recorded in at least one track |
| 02/01/1977 | US4006294 Transducer head assembly with fluid bearing and head height control system |
| 02/01/1977 | US4006293 Apparatus for reading a flat record carrier with an optically readable information structure |
| 02/01/1977 | US4006292 Information recording and reproducing system with plural information tracks within a single groove |
| 02/01/1977 | US4006022 Recording process utilizing supercooled organic compounds |
| 01/25/1977 | US4005275 Wideband analog photorecording apparatus and method |
| 01/25/1977 | US4005260 Device for reading a disk-shaped record carrier with time base correction |
| 01/25/1977 | US4005259 Signal reproducing systems employing a semiconductive light source |
| 01/18/1977 | US4004081 Optical videodisc pickup arm with moving coil drive means |
| 01/18/1977 | US4003636 Linear image forming apparatus |
| 01/11/1977 | US4003059 Optical recorder having focus controlling means |
| 01/11/1977 | US4002826 Playback apparatus, in particular, video player, for playing round records provided with information tracks |
| 01/04/1977 | US4001494 Photoreceptor matrix for optical video playback system |
| 01/04/1977 | US4001493 Single lens, multi-beam system and method for high resolution recording of information on a moving recording medium and article |
| 12/28/1976 | US4000511 Device for the compensation of drop-outs in a angle-velocity modulated signal |
| 12/28/1976 | US4000493 Acoustooptic scanner apparatus and method |
| 12/28/1976 | US4000492 Metal film recording media for laser writing |
| 12/21/1976 | US3999010 Light beam scanning system |
| 12/21/1976 | US3999009 Apparatus for playing a transparent optically encoded multilayer information carrying disc |
| 12/21/1976 | US3999008 Record carrier on which information is stored in an optically readable structure with dither focussing signals also being stored |
| 12/14/1976 | US3997715 Focusing system for videodisc player |
| 12/07/1976 | US3996610 Comb filter apparatus for video playback systems |
| 11/16/1976 | US3992593 Disc phonograph record playback by laser generated diffraction pattern |
| 11/16/1976 | US3992576 Floating device for information disc apparatus |
| 11/16/1976 | US3992575 Apparatus for optically reading a record carrier by means of an autofocus device |
| 11/16/1976 | US3992574 Opto-electronic system for determining a deviation between the actual position of a radiation-reflecting plane in an optical imaging system and the desired position of said plane |
| 11/09/1976 | US3991318 Optical detection systems utilizing organ arrays of optical fibers |
| 11/09/1976 | US3991275 Apparatus for optically reading a radiation-reflecting record carrier with beam splitting element |
| 11/02/1976 | US3990084 Information carrier |
| 11/02/1976 | US3989893 Reproducing apparatus with drop out suppression circuit for audio and video signals |
| 10/12/1976 | US3985952 Elasto-optic device for spot wobble in a video disc player |
| 09/28/1976 | US3983317 Astigmatizer for laser recording and reproducing system |
| 09/21/1976 | US3982253 Optical system for obtaining linear image and recorded device utilizing the optical system |
| 09/21/1976 | US3982105 Device for the automatic reading and evaluation of recorded curves |
| 09/21/1976 | US3981566 Lever-action mountings for beam steerer mirrors |
| 09/14/1976 | US3980818 Recorder and reproducer system |
| 09/14/1976 | US3980811 Contacting pickup optical reproduction system |
| 09/14/1976 | US3980810 Device for locally positioning a flexible rotating disc |
| 08/31/1976 | US3978279 Method and apparatus for simultaneously modulating with picture, sound and color signals the incidence of a recording light beam on a moving record medium |
| 08/31/1976 | US3978278 Videodisc reader with concave mirror elements |
| 08/31/1976 | US3978247 Transfer recording process |
| 08/31/1976 | US3977684 Playback apparatus, in particular a video player |
| 08/24/1976 | US3977009 Information recording with an organic compound capable of assuming two or more convertible stable aggregation states |
| 08/24/1976 | US3976828 Arrangement for aligning the image of an information structure on a converter |
| 08/24/1976 | US3976354 Holographic memory with moving memory medium |
| 08/17/1976 | US3975630 Method of guiding a light beam on an optical signal track |
| 08/17/1976 | US3975081 Signal recording system |
| 08/10/1976 | US3974327 Autofocus circuit for a videodisc playback device |
| 07/27/1976 | US3971874 Optical information storage material and method of making it |
| 07/20/1976 | US3971002 Device for the optical read-out of a diffractive track belonging to a data carrier in the form of a disc or tape |
| 07/20/1976 | US3970803 Printed sound track system |
| 07/13/1976 | US3969593 Sound recording on color film by hue modulation |
| 07/13/1976 | US3969576 Apparatus for reading a record carrier with an optical information structure |
| 07/13/1976 | US3969575 Opto-electronic focus detection system |
| 07/13/1976 | US3969574 Tubular player arm for an optical recording and reproducing device with drive coil and tachogenerator coil on other end |
| 07/13/1976 | US3969573 Apparatus for reading a record carrier on which information is stored in an optically readable structure |
| 06/29/1976 | US3966329 Precision optical beam divider and position detector |
| 06/22/1976 | US3964905 Color photograhic material having a bleach inhibitor therein defining a sound track |
| 06/15/1976 | US3963863 Device for reading out information recorded upon a substrate |
| 06/15/1976 | US3963862 Record carrier for a television signal |
| 06/08/1976 | US3962721 Apparatus for reading a disc-shaped record carrier with video luminance and chrominance information |
| 06/08/1976 | US3962720 Record carrier on which a television signal is stored |
| 06/08/1976 | US3962688 Optical mass data memory |
| 06/01/1976 | US3960443 Optical head moving device |
| 05/25/1976 | US3959799 Information storage by laser beam initiated reactions |
| 05/25/1976 | US3959784 High speed optical read-out of data stored in an array |
| 05/25/1976 | US3959655 Light source for optical sound recording and reproduction apparatus |
| 05/25/1976 | US3959581 Self-compensating focus system for optical video playback device |
| 05/18/1976 | US3958253 Device for thermally recording indicia |
| 05/11/1976 | US3956582 Apparatus for reading a record carrier on which information is recorded in at least one track |
| 05/04/1976 | US3954469 Method of creating a replicating matrix |
| 04/20/1976 | US3952191 Controlled system for focussing a read-out light beam |
| 04/20/1976 | US3952148 Optical video disc playback system with position servo |
| 04/13/1976 | US3950621 Apparatus for optically reading a reflecting record carrier |
| 04/06/1976 | US3949161 Video signal reproducing system |
| 03/30/1976 | US3947888 Hydrodynamic bearing head providing constant spacing |
| 03/30/1976 | US3947640 Method and device for recording data as holograms in a multi-channel storage tape |
| 03/30/1976 | US3947093 Optical device for producing a minute light beam |
| 03/23/1976 | US3946367 Three dimensional electro-optical retrieval system |
| 03/23/1976 | US3946166 Tracking arrangement |
| 03/23/1976 | US3945824 Process for forming optical sound track |
| 03/16/1976 | US3944727 Video disc player with movable mirror for directing light beam onto reflective disc |
| 03/16/1976 | US3944321 Recording unidimensional holograms with reduced positional sensitivity during readout |