| Patents for G11B 27 - Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel (59,746) |
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| 06/13/1978 | US4095261 Audio tape recorder, editor and amplifying system |
| 06/06/1978 | US4094013 Optical storage disk system with disk track guide sectors |
| 06/06/1978 | US4094010 Optical multi-channel digital disc storage system |
| 06/06/1978 | US4093832 Programmable record changer |
| 06/06/1978 | US4093831 Transcriber having selectable word reproduction rate |
| 05/30/1978 | US4092680 Apparatus for indicating the farthest advance position of a bi-directionally movable medium |
| 05/30/1978 | US4092679 Apparatus for variably selecting the capacity of a recording medium in a recording system |
| 05/23/1978 | US4091242 High speed voice replay via digital delta modulation |
| 05/16/1978 | US4090223 Video system for storing and retrieving documentary information |
| 05/16/1978 | US4090031 Multi-layered opitcal data records and playback apparatus |
| 05/02/1978 | US4087839 Filmstrip transducing apparatus and method |
| 04/25/1978 | US4086634 Method and apparatus for preparing recorded program material to prevent unauthorized duplication by magnetic tape recording |
| 04/25/1978 | US4085926 Tape splicer |
| 04/25/1978 | US4085698 Device for detecting rotational speed of a tape reel |
| 04/11/1978 | US4084198 Card scanning video system |
| 04/04/1978 | US4083040 Trace locator for a multi-trace recorder |
| 04/04/1978 | US4082600 Film splicing apparatus |
| 03/28/1978 | US4081844 Interleaved synch and beginning of data indicators |
| 03/21/1978 | US4080242 Apparatus for splicing photographic films or the like |
| 03/14/1978 | US4079261 Detector for distinguishing between recorded and unrecorded bands of a phonograph record |
| 02/21/1978 | US4075665 Method and apparatus for increasing the recording capacity of a disk |
| 02/21/1978 | US4075435 Method and apparatus for automatic dictation playback control |
| 02/14/1978 | US4074085 Multiple beam optical record playback apparatus for simultaneous scan of plural data tracks |
| 02/07/1978 | US4073011 Electrocardiographic computer |
| 02/07/1978 | US4072995 Tape viewing system for micro-cassette tape recorder |
| 02/07/1978 | US4072987 Digital storage systems |
| 01/10/1978 | US4068301 Data storage device comprising search means |
| 01/03/1978 | US4067050 Programmed presentation system |
| 01/03/1978 | US4067049 Sound editing system |
| 01/03/1978 | US4067044 Information recording and retrieval apparatus |
| 12/20/1977 | US4063370 Tape cassettes having indications for blind use |
| 12/13/1977 | US4063070 Wideband frequency multiplier particularly adapted for use in badge readers and the like |
| 12/06/1977 | US4062048 Tape timing apparatus and method employing a phase comparison between sequential pulse trains |
| 11/15/1977 | US4058841 Or reproducing apparatus with device for recording andor reproducing control signals |
| 11/08/1977 | US4057830 Electronic photography system |
| 10/18/1977 | US4054950 Apparatus for detecting a preamble in a bi-phase data recovery system |
| 10/18/1977 | US4054926 Device for automatic program selection on prerecorded magnetic tape |
| 10/18/1977 | US4054924 Variable message recorder employing single tape loop having fast reset |
| 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 |
| 10/04/1977 | US4052733 Pal four-frame subcarrier phase detector |
| 09/27/1977 | US4051540 Instruction indicating apparatus for a record and/or playback device |
| 09/20/1977 | US4050088 Apparatus for selecting playback or recording modes in magnetic recording and/or reproducing apparatus |
| 09/13/1977 | US4048659 Automatic cassette reproducing apparatus |
| 08/30/1977 | US4045613 Digital storage systems |
| 08/23/1977 | US4044389 Method and apparatus for measuring the speed at which a tape was recorded |
| 08/23/1977 | US4044233 End predictor for cassette tape |
| 08/16/1977 | US4041890 Or playback device |
| 08/02/1977 | US4040114 Magnetic tape reproducing apparatus with manually overrideable connection between tape lifter and pressure roller |
| 08/02/1977 | US4040102 Magnetic tape device |
| 08/02/1977 | US4040099 Method and apparatus for preparing recorded program material to render detectable unauthorized magnetic tape duplications, and method and apparatus for detecting such duplications |
| 08/02/1977 | US4040098 Editing system for controlling the transfer of selected video information from a video source to a video tape recorder |
| 08/02/1977 | US4040022 Missing clock detection circuit |
| 07/19/1977 | US4037260 Tape timer error corrector circuit for tape recorder/reproducers |
| 07/12/1977 | US4035843 Magnetic recording system |
| 06/28/1977 | US4032897 Interactive audiovisual display system |
| 06/14/1977 | US4030129 Pulse code modulated digital audio system |
| 06/07/1977 | US4028733 Pictorial information retrieval system |
| 05/31/1977 | US4027336 Motor speed control device |
| 05/31/1977 | US4027178 Circuit for generating synchronization signals |
| 05/10/1977 | US4022986 Playback unit for a long-playing record of a time division multiplexed audio signal |
| 05/03/1977 | US4021857 Magnetic recording system for reproducing successive still pictures |
| 04/26/1977 | US4020506 Tape cartridge with track position indicator |
| 04/19/1977 | US4018947 Method for edge marking recordable webs |
| 04/05/1977 | US4015799 Adaptive reel-to-reel tape control system |
| 03/22/1977 | US4014043 Cassette type magnetic recording and reproducing apparatus |
| 03/22/1977 | US4014039 Automatic program locator for tape decks |
| 03/22/1977 | US4013157 Bonus play machine |
| 03/15/1977 | US4012784 Voice logging recorder including decks dedicated for both logging and recall operations |
| 03/08/1977 | US4011587 Rotary head magnetic recorder for use with a specific record member |
| 03/08/1977 | US4011586 Voice logging recorder for use with preloaded cassettes |
| 03/01/1977 | US4010492 Using a radio feedback link to the engineer |
| 02/22/1977 | US4009331 Still picture program video recording composing and playback method and system |
| 02/08/1977 | US4007491 Dictation-transcription method and system |
| 02/08/1977 | US4007490 Time lapse video tape recorder |
| 02/08/1977 | US4006737 Electrocardiographic computer |
| 02/01/1977 | US4006295 Method of detecting defects in signals corresponding to the read-out of a data carrier and system for implementing such a method |
| 02/01/1977 | US4005871 Marking device for a recording apparatus |
| 01/25/1977 | US4005486 Apparatus for detecting tape running in a tape recorder |
| 01/25/1977 | US4005484 Automatic stopper for multitrack recorder |
| 01/25/1977 | US4005483 Automatic record control apparatus with multichannel memory |
| 01/25/1977 | US4005481 Or playback apparatus which prevents erasure of the synchronization track |
| 01/25/1977 | US4005479 Phase locked circuits |
| 01/11/1977 | US4003093 Apparatus for indicating tape end in a tape recorder and battery level |
| 01/11/1977 | US4003090 Magnetic recording and reproducing system with tape-to-head speed control |
| 01/11/1977 | US4003084 Method of and means for testing a tape record/playback system |
| 01/04/1977 | US4001886 Apparatus with headwheel servo for recording and playing back video information |
| 01/04/1977 | US4001883 High density data storage on magnetic disk |
| 01/04/1977 | US4001882 Magnetic tape editing, previewing and animating method and system |
| 01/04/1977 | US4001552 Method and apparatus for measuring web material wound on a reel |
| 12/28/1976 | US4000518 Signal detection during variable speed tape movements |
| 12/28/1976 | US4000510 System for storage and retrieval of video information on a cyclical storage device |
| 12/07/1976 | US3995946 Motion picture sound film apparatus |
| 11/09/1976 | US3990710 Coin-operated recording machine |
| 11/02/1976 | US3990108 Magnetic tape speed control system |
| 10/26/1976 | US3988778 System for random, time accurate access to recorded material |
| 10/19/1976 | US3987484 Programmed presentation system |
| 10/12/1976 | US3986208 Data recording with high speed search capability |
| 10/12/1976 | US3986051 Signal switching apparatus |
| 10/12/1976 | US3986004 Indexing apparatus for dictating and transcribing systems |