| 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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| 12/15/1981 | US4306255 Magnetic record/playback system of rotating head type |
| 12/15/1981 | US4305536 Air guide for tape transports having air jets at tangent points |
| 12/15/1981 | CA1114498A1 Video tape recorder |
| 12/15/1981 | CA1114352A1 Cassette |
| 12/15/1981 | CA1114350A1 Tape transport apparatus |
| 12/08/1981 | US4305103 Automatic reverse cassette type recorder |
| 12/08/1981 | US4305101 Method and apparatus for selectively recording a broadcast |
| 12/02/1981 | EP0040907A1 Apparatus for determining time code addresses at low tape speeds |
| 12/01/1981 | US4303956 Load-sharing type magnetic head |
| 12/01/1981 | US4303955 Apparatus for securing and releasing tape cartridges from tape decks |
| 12/01/1981 | US4303954 Control device for a tape recorder |
| 12/01/1981 | US4303210 Tape drive device |
| 11/26/1981 | WO1981003406A1 Process of mastering audio and video using motion picture techniques |
| 11/25/1981 | EP0040464A1 A fluid bearing |
| 11/24/1981 | US4302788 Reversible cassette-type recording and/or reproducing apparatus |
| 11/24/1981 | US4302787 Tape cassette and video recording and reproducing system using the same |
| 11/24/1981 | US4302786 Apparatus for detecting the stop of a magnetic tape traveling in a magnetic recording and reproducing device |
| 11/24/1981 | US4302785 Method and apparatus for controlling tape recorder |
| 11/24/1981 | US4302784 Method and apparatus for controlling tape recorder |
| 11/24/1981 | US4302653 Method and apparatus for monitoring and controlling a resistance welding operation |
| 11/24/1981 | US4301687 Pneumatic tension sensor |
| 11/24/1981 | CA1113184A1 Apparatus for controlling the scanning path of a rotary transducer |
| 11/18/1981 | EP0040066A1 Tracking control arrangements for magnetic reproducing devices |
| 11/18/1981 | EP0039997A1 Apparatus for identifying discontinuities in time code addresses identifying recorded information signals |
| 11/17/1981 | US4301525 Central control system for dictation |
| 11/17/1981 | US4301488 Tape cassette |
| 11/17/1981 | US4301487 Rotary head assembly with lubricating double sleeve construction |
| 11/17/1981 | US4301485 Tape speed switching device in cassette tape recorder-player |
| 11/17/1981 | US4301484 Cassette loading device of tape recorder |
| 11/17/1981 | US4301483 Unit for transmitting the movement of a motor to the cassette spool driving gears in a cassette tape recorder |
| 11/17/1981 | US4301482 Programmable multi-channel audio playback system for reel-to-reel tapes |
| 11/17/1981 | US4301481 Operation mode switching system for tape recorder |
| 11/17/1981 | US4301395 Phase-lock control device |
| 11/17/1981 | US4300735 Tape recorder |
| 11/17/1981 | US4300729 Tape clamp for magnetic tape magazine |
| 11/17/1981 | US4300713 Cassette tape recorder |
| 11/17/1981 | CA1112760A1 Mode selecting assembly for recording and/or reproducing apparatus |
| 11/17/1981 | CA1112706A1 Tape recorder motor with internal clutch |
| 11/11/1981 | EP0039423A1 Tape drive mechanism using the contact winding principle |
| 11/10/1981 | US4300179 Composite magnetic head with multitrack support structure |
| 11/10/1981 | US4300177 Thin-film magnetic head for reading and writing information |
| 11/10/1981 | US4300171 Magnetic recording medium direction sensing |
| 11/10/1981 | CA1112357A1 Apparatus for recording and/or playing back magnetic recordings of high frequency |
| 11/10/1981 | CA1112355A1 Automatic checking device for preset recording program of recording and reproducing apparatus |
| 11/03/1981 | US4298897 Buffered recording |
| 11/03/1981 | US4298269 Recordable reader printer and electrostatic copier |
| 11/03/1981 | CA1111962A1 Cassette and card recording and/or reproducing apparatus |
| 11/03/1981 | CA1111961A1 Method and apparatus for correcting tracking errors of a transducer which scans parallel record tracks |
| 11/03/1981 | CA1111960A1 Apparatus for recording and/or reproducing video signals |
| 11/03/1981 | CA1111906A1 Motor control system |
| 10/29/1981 | WO1981003082A1 Tape system with optically contrasting data marks |
| 10/28/1981 | EP0038436A1 Arrangement to reduce the cross-talk between neighbouring magnetic head systems of a write-read head |
| 10/27/1981 | US4297733 Method of controlling the position of a write or read head and a device for carrying out the method |
| 10/27/1981 | US4297732 Method and device for locating a sound event on a magnetic tape |
| 10/27/1981 | US4297731 Playback apparatus for correcting locking errors |
| 10/27/1981 | CA1111553A1 Minor bit reduction on a magnetic head |
| 10/21/1981 | EP0037945A1 Covering device for a vacuum column in a magnetic tape apparatus for the receipt of a slack tape loop |
| 10/20/1981 | US4296446 Motor speed control circuit |
| 10/20/1981 | CA1111096A1 Random-dump storage buffer for moving web comprising means providing uninterrupted flow of web-cushioning gas |
| 10/13/1981 | US4295171 System for controlling rotation of rotating structure |
| 10/13/1981 | US4295170 Variable tape speed for video recorders |
| 10/13/1981 | US4295169 Cassette loading and unloading device |
| 10/13/1981 | US4294552 Bidirectional ribbon drive control for printers |
| 10/13/1981 | US4294390 Pinch roller mechanism |
| 10/06/1981 | USRE30762 Method and apparatus for video signal recording |
| 10/06/1981 | US4293882 Endless loop tape magazine, and a recording and/or playback machine utilizing the magazine |
| 10/06/1981 | US4293881 System for priority transcribing of dictation |
| 10/06/1981 | US4293880 Apparatus for recording and reproducing video signals at selectable different tape traveling speeds from a plurality of pairs of video heads |
| 10/06/1981 | CA1110358A1 Mode change-over device for recording and/or reproducing apparatus |
| 10/06/1981 | CA1110357A1 Magnetic tape recording and/or reproducing apparatus |
| 10/06/1981 | CA1110217A1 Tape transport mechanism |
| 10/01/1981 | WO1981002804A1 Multi-track tape drive with reel end of tape sensing and rewind |
| 10/01/1981 | WO1981002803A1 Multitrack magnetic head |
| 09/30/1981 | EP0036589A1 A reel shaft device of a magnetic recording tape running apparatus |
| 09/30/1981 | EP0036497A1 Circuit for the automatic rewinding of a magnetic record carrier, especially of a video tape at the end of the programme |
| 09/29/1981 | USRE30756 Method and apparatus for video signal recording |
| 09/29/1981 | US4292557 Motor with integral clutch |
| 09/29/1981 | US4292509 Indicator for tape running direction and tape remnant amount |
| 09/29/1981 | CA1109948A1 Servo system |
| 09/22/1981 | US4291348 Actuating device for the advancement of the tape in a cassette-type tape recording/playback apparatus |
| 09/22/1981 | US4291347 Eight track tape alignment instrument |
| 09/22/1981 | US4291345 Cassette type tape recorder |
| 09/22/1981 | US4290567 Tape cassette brake assembly |
| 09/22/1981 | US4290566 Magnetic tape handler |
| 09/22/1981 | US4290562 Hub for use in a magnetic recording tape cassette |
| 09/16/1981 | EP0035542A1 Composite magnetic head with multitrack support structure. |
| 09/16/1981 | EP0035539A1 High capacity data cartridge system. |
| 09/15/1981 | US4290090 Apparatus for and method of noise-free detection of inter-feature pauses to control selective replay in tape recording/reproduction systems |
| 09/15/1981 | US4290089 Magnetic-tape cassette with tape counting roller |
| 09/15/1981 | US4290081 Method and apparatus for stop frame reproduction in television picture fields each recorded on tape in a plurality of adjacent tracks |
| 09/15/1981 | US4289999 Digital variable voltage level control circuit with automatic return to neutral |
| 09/15/1981 | US4289284 Tape control apparatus |
| 09/15/1981 | CA1109147A1 Cartridge loading mechanism |
| 09/15/1981 | CA1109146A1 Automatic tracking servo control system |
| 09/15/1981 | CA1109145A1 Mode change-over mechanism for recording and/or reproducing apparatus |
| 09/08/1981 | US4288827 Automatic switching device for cassette tape recorder with low frequency compensating means |
| 09/08/1981 | US4288823 Apparatus for and method of distinguishing pauses to control selective replay in tape recording/reproduction systems |
| 09/08/1981 | US4288469 Anodized aluminium rollers with improved electrical conductivity and a process for their manufacture |
| 09/08/1981 | US4288048 Cassette |
| 09/08/1981 | CA1108754A1 Transcriber having selectable word reproduction rate |