| 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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| 04/21/1981 | US4262859 Transport apparatus with differential force system |
| 04/15/1981 | EP0026964A1 Low profile magnetic tape drive with vacuum actuated auto-threading |
| 04/14/1981 | US4262315 Tape cassette turn-over mechanism |
| 04/14/1981 | US4261527 Apparatus for preventing damage to a tape player head |
| 04/14/1981 | CA1099404A1 Magnetic tape recording and/or reproducing apparatus |
| 04/08/1981 | EP0026552A2 Apparatus for controlling the motion of an elongated object; case for a tape-like information carrier provided with such apparatus; apparatus for writing, reading or erasing information on a tape-like information carrier contained in such a case |
| 04/08/1981 | EP0026551A1 A case provided with a conveying means for conveying tape-like information carrier as well as an apparatus for writing, reading or erasing information to be utilized in combination with such a case |
| 04/08/1981 | EP0026451A2 Circuit arrangement for the protection of data stored on a magnetic record carrier |
| 04/08/1981 | EP0026320A1 Data recorder/reader and method of operating same |
| 04/07/1981 | US4261023 Magnetic recording reproducing apparatus |
| 04/07/1981 | US4261022 Data evaluator using an adjustable endless loop magnetic tape |
| 04/07/1981 | US4261021 Cassette labeling apparatus |
| 04/07/1981 | US4260120 Tape driving apparatus |
| 04/07/1981 | CA1099016A1 Variable ratio drive |
| 04/07/1981 | CA1098834A1 Dictation-transcription method and system |
| 04/01/1981 | EP0026095A2 Dictation recording and transcribing method and apparatus |
| 04/01/1981 | EP0026089A2 Cassette changing apparatus |
| 04/01/1981 | EP0025914A1 Tape cassette and tape apparatus, in particular magnetic tape cassette and magnetic tape apparatus |
| 03/31/1981 | US4259702 Front-loading cassette tape machine |
| 03/31/1981 | US4259701 Device for inserting and ejecting a cassette in a cassette-type tape recorder/playback apparatus |
| 03/31/1981 | US4259700 Apparatus for recording and reproducing information on magnetic tape |
| 03/31/1981 | US4259698 Speed and phase servo control apparatus |
| 03/31/1981 | US4259625 Rotational direction indicating apparatus |
| 03/25/1981 | EP0025534A1 Magnetic tape apparatus with an arrangement for damping the movement of the reel motors during standby of the tape transport capstan |
| 03/24/1981 | US4258402 Small size tape recorder with adapter |
| 03/24/1981 | US4258399 Magnetic recording and reproducing apparatus |
| 03/24/1981 | US4257547 Tape transport mechanism |
| 03/24/1981 | US4257262 Testing apparatus for cassette type tape recorders |
| 03/24/1981 | CA1098193A1 Switching motor control system |
| 03/19/1981 | WO1981000782A1 High capacity data cartridge system |
| 03/19/1981 | WO1981000781A1 Head positioning mechanism for data cartridge recorder |
| 03/19/1981 | WO1981000780A1 Composite magnetic head with multitrack support structure |
| 03/17/1981 | US4257077 Pressure pad and shielding plate for a tape cassette |
| 03/17/1981 | US4257076 Grooved drum for tape recording and/or reproducing apparatus |
| 03/17/1981 | US4257075 Tape magazine and recording and/or playback machine with improved magazine locating and loading structure |
| 03/17/1981 | US4256996 Web transport system |
| 03/17/1981 | US4256408 Dot matrix print head |
| 03/17/1981 | US4256274 Tape reversal control |
| 03/17/1981 | CA1097804A1 Head support and eject mechanism for recording and/or playback apparatus |
| 03/17/1981 | CA1097802A1 Controlled-width-synchronization of recorded pixels |
| 03/17/1981 | CA1097799A1 Tape motion control for reel-to-reel drive |
| 03/10/1981 | US4254923 Magnetic tape cassette |
| 03/04/1981 | EP0024361A1 Recording and/or reproducing apparatus |
| 03/03/1981 | US4254367 Digital servo circuit |
| 03/03/1981 | CA1096966A1 Video signal recording and/or reproducing apparatus |
| 03/03/1981 | CA1096965A1 Editing system |
| 03/03/1981 | CA1096838A1 Closed-loop magnetic tape drive arrangement |
| 02/24/1981 | US4253128 Dual spring loaded operating mechanism for a tape recorder |
| 02/24/1981 | US4253127 Magnetic head |
| 02/24/1981 | US4253123 Control device for a recording and reproducing apparatus |
| 02/24/1981 | US4252284 Drive reversing mechanism |
| 02/24/1981 | CA1096472A1 Tape control apparatus |
| 02/19/1981 | WO1981000480A1 Magnetic tape cassette |
| 02/17/1981 | US4251885 Checking programmed controller operation |
| 02/17/1981 | US4251177 Inclined article storage frames with a loading and unloading apparatus |
| 02/17/1981 | CA1096038A1 Capstan |
| 02/17/1981 | CA1096037A1 Dynamic deskewing for a rotating head recording device |
| 02/11/1981 | EP0023744A1 Tape recording or reproducing apparatus with a cassette introduced into a cassette holder |
| 02/10/1981 | US4250527 Switching device for cassette tape recorders |
| 02/10/1981 | CA1095616A1 High performance tape path for a 19 inch tape recorder |
| 02/10/1981 | CA1095483A1 Endless loop tape magazine |
| 02/04/1981 | EP0023269A2 Printer comprising removable dot print head |
| 02/03/1981 | US4249222 Recording and/or reproducing apparatus for reducing tape vibration |
| 02/03/1981 | US4249220 Capstan servo system in a recording and/or reproducing apparatus |
| 02/03/1981 | US4249041 Dictation-transcription system |
| 02/03/1981 | CA1095112A1 Collation controls |
| 01/28/1981 | EP0023067A1 Tape recording or reproducing apparatus with rotating magnetic head |
| 01/27/1981 | US4247876 Dictation recording and transcribing system utilizing a multiple media cartridge apparatus |
| 01/27/1981 | CA1094682A1 Magnetic-tape cassette apparatus |
| 01/22/1981 | WO1981000166A1 Device for driving endless tape |
| 01/21/1981 | EP0022651A1 Scanning type magnetic tape recorder and cassette |
| 01/20/1981 | US4246616 System for reproducing a video signal in a slow motion or still picture reproduction |
| 01/20/1981 | US4245404 Audio-visual teaching machine |
| 01/20/1981 | CA1094218A1 Magnetic tape recording and/or reproducing apparatus |
| 01/20/1981 | CA1094217A1 Magnetic recording and/or reproducing apparatus |
| 01/20/1981 | CA1094216A1 Cassette changer apparatus |
| 01/20/1981 | CA1094215A1 Cassette changer apparatus having priority eject |
| 01/14/1981 | EP0022298A1 Apparatus for recording and reading signals in tracks on a magnetic tape |
| 01/13/1981 | CA1093688A1 Procedure for tightening tape wraps on a spindle |
| 01/13/1981 | CA1093686A1 Cassette-type recording and/or reproducing apparatus |
| 01/13/1981 | CA1093525A1 Reel holding hub assembly |
| 01/07/1981 | EP0020581A1 Magnetic tape recorder with quick access to recorded information |
| 01/06/1981 | US4243921 Digital servo system for rotating member |
| 01/06/1981 | US4243186 Low profile magnetic tape drive with vacuum actuated auto-threading |
| 01/06/1981 | CA1093209A1 Apparatus for reproducing and/or recording magnetic tape in cassettes |
| 01/06/1981 | CA1093187A1 Tape drive motor control circuit |
| 12/30/1980 | US4242709 Strip media drive system |
| 12/30/1980 | US4242708 Tape recording apparatus using capacitive detectors as tape position sensors |
| 12/30/1980 | US4242619 Digital servo control circuit |
| 12/30/1980 | CA1092706A1 Video signal reproducing apparatus with a track searching arrangement |
| 12/30/1980 | CA1092576A1 Drive apparatus for tape recorder |
| 12/30/1980 | CA1092451A1 Leader or trailer tape for a magnetic recording medium |
| 12/23/1980 | US4241365 Magnetic video recording and reproducing device |
| 12/16/1980 | USRE30448 Tape recorder system |
| 12/10/1980 | EP0020176A2 Disc, tape and hybrid disc-tape memory apparatus and drive assembly |
| 12/10/1980 | EP0019825A1 Tape guide device of rotary head type video tape recorder |
| 12/10/1980 | EP0019799A2 Apparatus for registering working condition data, in particular of a vehicle |
| 12/10/1980 | EP0019632A1 Quartz crystal resonator |
| 12/09/1980 | US4238808 Tape stop detecting mechanism |
| 12/09/1980 | US4238088 Guide for a thin tape-like recording medium, particularly a magnetic tape |