| Patents for G11B 11 - Recording on, or reproducing from, the same record carrier wherein for these two operations the methods or means are covered by different main groups of groups or by different subgroups of group; Record carriers therefor (14,351) |
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| 01/23/1980 | EP0006891A1 Photovoltaic-ferroelectric data recorder |
| 12/11/1979 | CA1067950A1 Multi-color recording medium responsive to force fields and apparatus for recording on the medium |
| 11/27/1979 | US4176277 Thermosensitive data-carrier designed for the recording of information and a method of recording information on such a data-carrier |
| 11/27/1979 | US4176016 Forming electrically insulating layers by sputter deposition |
| 09/25/1979 | CA1063239A1 Magnetic bubble read head for record carrier |
| 07/24/1979 | CA1059236A1 Scanning reproducing apparatus for disc type video records |
| 05/01/1979 | US4152727 Reproducing transducer capable of tracking control |
| 05/01/1979 | US4152486 Curie temperature, alloy of dysprosium and iron |
| 03/13/1979 | US4144591 Memory transistor |
| 03/08/1979 | WO1979000097A1 Photovoltaic-ferroelectric data recorder |
| 01/02/1979 | US4133047 System for storing and retrieving information at the molecular level |
| 11/21/1978 | US4126494 Magnetic transfer record film |
| 11/14/1978 | US4125860 Reproducer for an eraseable videodisc |
| 10/31/1978 | US4123788 Magnetic information carrier with optical servo tracks and apparatus for reading and writing the same |
| 10/17/1978 | US4121249 Card recording and reproduction apparatus and method |
| 08/22/1978 | US4109045 Multilayer |
| 07/18/1978 | US4101947 Narrow track magnetic-head recorder |
| 07/18/1978 | US4101935 Electron beam reading arrangements |
| 05/23/1978 | US4091171 Optical information storage material and method of making it |
| 03/21/1978 | US4080625 Pickup circuitry for a video disc player with printed circuit board |
| 03/14/1978 | US4079429 Optical detector for magnetic fields employing feedback circuitry |
| 02/14/1978 | US4074313 Electron beam disc recorder |
| 01/10/1978 | US4068121 Light collector and prism light source for photoelectric readers |
| 11/08/1977 | US4057833 Centering detection system for an apparatus for playing optically readable record carriers |
| 09/27/1977 | US4051527 Focus detection system for a video disc player using a plurality of radiation sensors in the far field of the information structure |
| 08/09/1977 | US4041532 Method of recording wide-band signals on a thermoplastic film by use of a beam of electrons |
| 08/02/1977 | US4040089 Disc master positioning apparatus for a recording system |
| 07/19/1977 | US4037263 Arrangement for the direct conversion of items of data stored in magnetic form into optical signals |
| 07/19/1977 | US4037253 Pressure sensitive signal reproducing system for a videodisc |
| 06/28/1977 | US4032901 System for storing and retrieving information at the molecular level |
| 05/31/1977 | US4027330 Disc recording |
| 05/24/1977 | US4025731 Optical record, and associated recording and reading-out devices |
| 03/15/1977 | US4012777 Record carrier and device for playing back same |
| 03/01/1977 | US4010318 Probe forming electron optical column having means for examining magnified image of the probe source |
| 02/08/1977 | US4007295 Sulfur dioxide |
| 12/07/1976 | US3995790 Cassette for tape-shaped record carriers |
| 11/16/1976 | US3992593 Disc phonograph record playback by laser generated diffraction pattern |
| 07/06/1976 | US3968326 Trapezoidal smooth grooves for video disc |
| 06/22/1976 | US3965463 Apparatus using amorphous magnetic compositions |
| 04/20/1976 | US3952191 Controlled system for focussing a read-out light beam |
| 04/20/1976 | US3952146 Electron beam recording of wide-band signals on thermoplastic film |
| 04/06/1976 | US3949387 Beam addressable film using amorphous magnetic material |
| 03/30/1976 | US3947890 Magneto-optical readout apparatus |
| 03/30/1976 | US3947879 Multi-color recording medium responsive to force fields and apparatus for recording on the medium |
| 03/23/1976 | US3946400 Recorder for electrosensitive record carriers having a segmented counter electrode |
| 03/09/1976 | US3943302 Electron beam recording in thick materials |
| 03/09/1976 | US3943275 Precision turntable rotation in a vacuum atmosphere |
| 03/09/1976 | US3942867 Optical memory apparatus |
| 02/24/1976 | US3940574 Reproduction of information from information-bearing discs |
| 02/17/1976 | US3939302 Method and apparatus for recording and/or reproducing a video signal on a photographic record disc |
| 01/27/1976 | US3935594 Write head for a magnetic recorderplayback device |