Patents
Patents for G11B 27 - Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel (59,746)
06/1978
06/13/1978US4095261 Audio tape recorder, editor and amplifying system
06/06/1978US4094013 Optical storage disk system with disk track guide sectors
06/06/1978US4094010 Optical multi-channel digital disc storage system
06/06/1978US4093832 Programmable record changer
06/06/1978US4093831 Transcriber having selectable word reproduction rate
05/1978
05/30/1978US4092680 Apparatus for indicating the farthest advance position of a bi-directionally movable medium
05/30/1978US4092679 Apparatus for variably selecting the capacity of a recording medium in a recording system
05/23/1978US4091242 High speed voice replay via digital delta modulation
05/16/1978US4090223 Video system for storing and retrieving documentary information
05/16/1978US4090031 Multi-layered opitcal data records and playback apparatus
05/02/1978US4087839 Filmstrip transducing apparatus and method
04/1978
04/25/1978US4086634 Method and apparatus for preparing recorded program material to prevent unauthorized duplication by magnetic tape recording
04/25/1978US4085926 Tape splicer
04/25/1978US4085698 Device for detecting rotational speed of a tape reel
04/11/1978US4084198 Card scanning video system
04/04/1978US4083040 Trace locator for a multi-trace recorder
04/04/1978US4082600 Film splicing apparatus
03/1978
03/28/1978US4081844 Interleaved synch and beginning of data indicators
03/21/1978US4080242 Apparatus for splicing photographic films or the like
03/14/1978US4079261 Detector for distinguishing between recorded and unrecorded bands of a phonograph record
02/1978
02/21/1978US4075665 Method and apparatus for increasing the recording capacity of a disk
02/21/1978US4075435 Method and apparatus for automatic dictation playback control
02/14/1978US4074085 Multiple beam optical record playback apparatus for simultaneous scan of plural data tracks
02/07/1978US4073011 Electrocardiographic computer
02/07/1978US4072995 Tape viewing system for micro-cassette tape recorder
02/07/1978US4072987 Digital storage systems
01/1978
01/10/1978US4068301 Data storage device comprising search means
01/03/1978US4067050 Programmed presentation system
01/03/1978US4067049 Sound editing system
01/03/1978US4067044 Information recording and retrieval apparatus
12/1977
12/20/1977US4063370 Tape cassettes having indications for blind use
12/13/1977US4063070 Wideband frequency multiplier particularly adapted for use in badge readers and the like
12/06/1977US4062048 Tape timing apparatus and method employing a phase comparison between sequential pulse trains
11/1977
11/15/1977US4058841 Or reproducing apparatus with device for recording andor reproducing control signals
11/08/1977US4057830 Electronic photography system
10/1977
10/18/1977US4054950 Apparatus for detecting a preamble in a bi-phase data recovery system
10/18/1977US4054926 Device for automatic program selection on prerecorded magnetic tape
10/18/1977US4054924 Variable message recorder employing single tape loop having fast reset
10/18/1977US4054920 Device for storing electromagnetic control signals on magnetic strip material and a sound film projector equipped therewith
10/11/1977US4053944 Microprocessor controlled signal pattern detector
10/04/1977US4052733 Pal four-frame subcarrier phase detector
09/1977
09/27/1977US4051540 Instruction indicating apparatus for a record and/or playback device
09/20/1977US4050088 Apparatus for selecting playback or recording modes in magnetic recording and/or reproducing apparatus
09/13/1977US4048659 Automatic cassette reproducing apparatus
08/1977
08/30/1977US4045613 Digital storage systems
08/23/1977US4044389 Method and apparatus for measuring the speed at which a tape was recorded
08/23/1977US4044233 End predictor for cassette tape
08/16/1977US4041890 Or playback device
08/02/1977US4040114 Magnetic tape reproducing apparatus with manually overrideable connection between tape lifter and pressure roller
08/02/1977US4040102 Magnetic tape device
08/02/1977US4040099 Method and apparatus for preparing recorded program material to render detectable unauthorized magnetic tape duplications, and method and apparatus for detecting such duplications
08/02/1977US4040098 Editing system for controlling the transfer of selected video information from a video source to a video tape recorder
08/02/1977US4040022 Missing clock detection circuit
07/1977
07/19/1977US4037260 Tape timer error corrector circuit for tape recorder/reproducers
07/12/1977US4035843 Magnetic recording system
06/1977
06/28/1977US4032897 Interactive audiovisual display system
06/14/1977US4030129 Pulse code modulated digital audio system
06/07/1977US4028733 Pictorial information retrieval system
05/1977
05/31/1977US4027336 Motor speed control device
05/31/1977US4027178 Circuit for generating synchronization signals
05/10/1977US4022986 Playback unit for a long-playing record of a time division multiplexed audio signal
05/03/1977US4021857 Magnetic recording system for reproducing successive still pictures
04/1977
04/26/1977US4020506 Tape cartridge with track position indicator
04/19/1977US4018947 Method for edge marking recordable webs
04/05/1977US4015799 Adaptive reel-to-reel tape control system
03/1977
03/22/1977US4014043 Cassette type magnetic recording and reproducing apparatus
03/22/1977US4014039 Automatic program locator for tape decks
03/22/1977US4013157 Bonus play machine
03/15/1977US4012784 Voice logging recorder including decks dedicated for both logging and recall operations
03/08/1977US4011587 Rotary head magnetic recorder for use with a specific record member
03/08/1977US4011586 Voice logging recorder for use with preloaded cassettes
03/01/1977US4010492 Using a radio feedback link to the engineer
02/1977
02/22/1977US4009331 Still picture program video recording composing and playback method and system
02/08/1977US4007491 Dictation-transcription method and system
02/08/1977US4007490 Time lapse video tape recorder
02/08/1977US4006737 Electrocardiographic computer
02/01/1977US4006295 Method of detecting defects in signals corresponding to the read-out of a data carrier and system for implementing such a method
02/01/1977US4005871 Marking device for a recording apparatus
01/1977
01/25/1977US4005486 Apparatus for detecting tape running in a tape recorder
01/25/1977US4005484 Automatic stopper for multitrack recorder
01/25/1977US4005483 Automatic record control apparatus with multichannel memory
01/25/1977US4005481 Or playback apparatus which prevents erasure of the synchronization track
01/25/1977US4005479 Phase locked circuits
01/11/1977US4003093 Apparatus for indicating tape end in a tape recorder and battery level
01/11/1977US4003090 Magnetic recording and reproducing system with tape-to-head speed control
01/11/1977US4003084 Method of and means for testing a tape record/playback system
01/04/1977US4001886 Apparatus with headwheel servo for recording and playing back video information
01/04/1977US4001883 High density data storage on magnetic disk
01/04/1977US4001882 Magnetic tape editing, previewing and animating method and system
01/04/1977US4001552 Method and apparatus for measuring web material wound on a reel
12/1976
12/28/1976US4000518 Signal detection during variable speed tape movements
12/28/1976US4000510 System for storage and retrieval of video information on a cyclical storage device
12/07/1976US3995946 Motion picture sound film apparatus
11/1976
11/09/1976US3990710 Coin-operated recording machine
11/02/1976US3990108 Magnetic tape speed control system
10/1976
10/26/1976US3988778 System for random, time accurate access to recorded material
10/19/1976US3987484 Programmed presentation system
10/12/1976US3986208 Data recording with high speed search capability
10/12/1976US3986051 Signal switching apparatus
10/12/1976US3986004 Indexing apparatus for dictating and transcribing systems