| Patents for 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) |
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| 01/10/1978 | US4068270 Device to support and position a magnetic transducer |
| 01/10/1978 | US4067488 Package bushing-fly wheel-capstan for playback and/or recording apparatus |
| 01/03/1978 | US4067051 Cartridge type magnetic recording and reproducing system |
| 12/27/1977 | US4065800 Tape cassette player |
| 12/27/1977 | US4065074 Reel servo control system |
| 12/27/1977 | US4065044 Capstan |
| 12/13/1977 | US4063294 Tape cartridge loading mechanism |
| 12/13/1977 | US4063293 Magnetic head switching matrix with bi-directional current capability |
| 12/13/1977 | US4063292 Integral retained file protect means |
| 12/13/1977 | US4063139 Tape drive motor control circuit |
| 12/13/1977 | US4062506 Tape cassette with features for preventing the tape from moving up or downwardly relative to the cassette |
| 12/13/1977 | US4062248 Two-speed video recorder |
| 12/06/1977 | US4062050 Magnetic card reader |
| 12/06/1977 | US4061378 Cassette tape recorder having impact absorbing mechanism for cover plate |
| 12/06/1977 | US4061292 Bi-directional rotary drive mechanism |
| 11/29/1977 | US4060840 Recording and/or reproducing apparatus having adjustable tape guide mechanism |
| 11/29/1977 | US4060838 Centering pin for cassette apparatus |
| 11/29/1977 | US4060248 Playing apparatus, in particular a video player for playing a record which is made of a transparent material and provided with a central hole |
| 11/22/1977 | US4059245 Magnetic recording-reproducing device |
| 11/22/1977 | US4059244 Tape cassette phrase retriever |
| 11/15/1977 | US4058841 Or reproducing apparatus with device for recording andor reproducing control signals |
| 11/15/1977 | US4058687 Cassette recorder with switching for a device for noise suppression |
| 11/08/1977 | US4057839 Tape cassette drive |
| 11/01/1977 | US4056849 High speed buffered tape reader with low tape stress |
| 11/01/1977 | US4056835 Head support and eject mechanism for recording and/or playback apparatus |
| 11/01/1977 | US4056834 Magnetic video recorder and cassette providing tape loading |
| 11/01/1977 | US4056833 Turntable assembly for video cassette recorder/reproducer |
| 11/01/1977 | US4056832 Servo system for controlling the position of a reading head |
| 10/25/1977 | US4055288 Front drive cartridge-tape player system with fast forward and reverse modes |
| 10/18/1977 | US4054930 Cassette-type magnetic tape player |
| 10/18/1977 | US4054929 Tape recording methods and apparatus |
| 10/18/1977 | US4054927 Telephone answering apparatus with control in response to segment of the endless tape loop |
| 10/18/1977 | US4054925 Endless loop recorder having temperature compensated tensioning |
| 10/18/1977 | US4054924 Variable message recorder employing single tape loop having fast reset |
| 10/18/1977 | US4054923 Belt driven tape transport with re-positioned reel |
| 10/18/1977 | US4054920 Device for storing electromagnetic control signals on magnetic strip material and a sound film projector equipped therewith |
| 10/11/1977 | US4053944 Microprocessor controlled signal pattern detector |
| 10/11/1977 | US4053935 Tape cassette with flexible aperture closure |
| 10/11/1977 | US4053829 Apparatus for detecting the direction of a magnetic field to sense the position of, for example, a rotary element or the like |
| 10/04/1977 | US4052742 Magnetic tape recorder drive mechanism having a latching member with a pause mode and a stop mode |
| 09/27/1977 | US4051415 Web speed control system |
| 09/20/1977 | US4050090 Helical scan magnetic recording device having a folded mounting plate |
| 09/20/1977 | US4050088 Apparatus for selecting playback or recording modes in magnetic recording and/or reproducing apparatus |
| 09/20/1977 | US4050087 Or reproducing apparatus |
| 09/20/1977 | US4049216 Method and apparatus for generating constant tape tension in a tape transport apparatus |
| 09/20/1977 | US4049169 Crescent silencing reset mechanism for fast forward 8-track cartridge |
| 09/13/1977 | US4048661 Device for guiding and winding magnetic tape in recording and/or reproducing apparatus |
| 09/13/1977 | US4048659 Automatic cassette reproducing apparatus |
| 09/13/1977 | US4048617 Retrace data elimination |
| 09/13/1977 | US4048511 Automatic output control method and dynamo equipment for generating sets using automobile wheel friction drive |
| 09/13/1977 | US4048150 Leader of a carrier of information in the form of a web |
| 09/06/1977 | US4047231 High stability digital head servo for video recorders |
| 09/06/1977 | US4046334 Automatic reversal mechanism |
| 08/30/1977 | US4045821 Tape cartridge having a shutter with self locking function |
| 08/30/1977 | US4045820 Device for positioning and guiding a magnetic tape around the drum of a rotary head assembly |
| 08/30/1977 | US4044965 Magnetic tape reel for computer |
| 08/30/1977 | US4044868 Or playback apparatus |
| 08/23/1977 | US4044391 Cassette tape recorders |
| 08/23/1977 | US4044390 Cartridge loading and unloading device use in cartridge type tape recorders |
| 08/23/1977 | US4044389 Method and apparatus for measuring the speed at which a tape was recorded |
| 08/23/1977 | US4044388 Interactive servo control system for use with a rotating-head magnetic tape player |
| 08/23/1977 | US4044387 Magnetic head switching system |
| 08/23/1977 | US4044386 Tape cassette with erase inhibit plug |
| 08/23/1977 | US4044323 Damped solenoid |
| 08/23/1977 | US4044233 End predictor for cassette tape |
| 08/23/1977 | US4043650 Film handling device |
| 08/23/1977 | US4043149 Uniform-load clutch device particularly adapted for application in magnetic-tape recorders |
| 08/09/1977 | US4041537 Tape cassette with locking sensor slide |
| 08/09/1977 | US4040575 Tape guiding structure |
| 08/02/1977 | US4040114 Magnetic tape reproducing apparatus with manually overrideable connection between tape lifter and pressure roller |
| 08/02/1977 | US4040110 Video head assembly having discrete arcurate ceramic pieces on rotor between heads |
| 08/02/1977 | US4040109 Tape transport system of video tape recorder with longitudinal recording |
| 08/02/1977 | US4040104 Tape cassette apparatus with plural intermediate positions |
| 08/02/1977 | US4040102 Magnetic tape device |
| 08/02/1977 | US4040100 Digital video tape frame code readout system |
| 08/02/1977 | US4039256 Intermittent film transport registration stabilization device |
| 08/02/1977 | US4039110 Tape high-speed travelling device |
| 07/26/1977 | US4038694 Player for tape cartridges and cassettes |
| 07/26/1977 | US4038692 Tape sensing device for magnetic tape recording and/or reproducing apparatus |
| 07/26/1977 | US4037767 Tape transporting apparatus |
| 07/19/1977 | US4037262 Solenoid operated transcriber mechanism |
| 07/19/1977 | US4037261 Tape recorder with head positioning mechanism |
| 07/19/1977 | US4037260 Tape timer error corrector circuit for tape recorder/reproducers |
| 07/19/1977 | US4037259 Method and equipment for switching the operating conditions of a tape-recorder |
| 07/19/1977 | US4037258 Read/write apparatus for magnetic recorders |
| 07/19/1977 | US4036458 Device for the bidirectional movement of an information support |
| 07/12/1977 | USRE29301 Noise muffler for magnetic tape vacuum column |
| 07/12/1977 | US4035843 Magnetic recording system |
| 07/12/1977 | US4035842 Recorded video signal reproducing apparatus capable of reproducing stop motion still pictures |
| 07/12/1977 | US4035589 Entertainment and public address system with replay of entertainment program after a public address interruption |
| 07/12/1977 | US4034925 Front drive cartridge-tape player system with fast forward and reverse modes |
| 07/12/1977 | US4034619 Motion reversal device for mechanisms for compact cassettes, moving spool arrangements and the like |
| 07/05/1977 | US4033495 Tape drive apparatus |
| 07/05/1977 | US4033491 Tape recorder mechanism responsive to tape stoppage |
| 06/28/1977 | US4032987 Sound recording and reproducing apparatus using a cassette having a casing made of reflective material |
| 06/28/1977 | US4032986 Scanning device for the recording and/or play-back of wide-band signals |
| 06/28/1977 | US4032985 Video transducer system and method with tape drag between the reel and the capstan |
| 06/28/1977 | US4032983 Adapter for use in transcribers |
| 06/28/1977 | US4032982 Adaptive voltage control of motor in an incrementing magnetic tape transport |
| 06/28/1977 | US4032981 Multiple selection sound reproducing apparatus |