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| More topics under "G11B - Information storage based on relative movement between record carrier and transducer" (509,022) |
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| 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) | | G11B 13 - Recording simultaneously or selectively by methods or means covered by different main groups; Record carriers therefor; Reproducing simultaneously or selectively therefrom (1,475) | | G11B 15 - Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function (21,557) | | G11B 17 - Guiding record carriers not specifically of filamentary or web form, or of supports therefor (20,090) | | G11B 19 - Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function (26,229) | | G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980) | | G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963) | | G11B 23 - Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus (25,121) | | G11B 25 - Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing (7,037) | | G11B 27 - Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel (59,746) | | G11B 3 - Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor (2,921) | | G11B 31 - Arrangements for the associated working of recording or reproducing apparatus with related apparatus (6,218) | | G11B 33 - Constructional parts, details or accessories not provided for in the other groups of this subclass (27,271) | | G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826) | | 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) | | G11B 9 - Recording or reproducing using a method or means not covered by one of the main groups; Record carriers therefor (3,522) |
| Patents for G11B - Information storage based on relative movement between record carrier and transducer (1,006) |
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| 05/18/1982 | US4330881 Video disc apparatus for clearing foreign matter from the signal pickup stylus during playback | | 09/01/1981 | US4287587 Signal loss dectector for video disc | | 09/16/1980 | CA1085943A1 Method to prevent unauthorized use of cassette tape recorders and a device according to the method | | 03/25/1980 | CA1074446A1 Information storage devices | | 12/26/1978 | US4131001 Method to prevent unauthorized use of cassette tape recorders and a device according to the method | | 06/15/1976 | USRE28863 Guide elements for magnetic tapes wound or to be wound in the form of packs on flangeless spools |
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