Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1980-10-14
1983-04-12
Wolff, John H.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
360 721, 242201, H04N 916
Patent
active
043800319
ABSTRACT:
In a tape transport having a bidirectional drive for movement of tape at playback speed and fast speed in either direction, including a reversing mechanism, signal detection circuit means for receiving audio signals from one or the other sets of head channels and for producing actuating signals in response to a silence interval of predetermined minimum duration in audio signals indicating a silence period between recordings on the corresponding set of recording tracks, a control for the drive including a member having two states representing the respective directions of tape movement, connected for switching the sets of head channels to accommodate the direction of tape movement upon reversal of the drive, and disconnected from switching the sets of head channels upon reversal of the drive for movement of the tape at fast rewind speed, so as to maintain the same set of head channels enabled when the drive is shifted to fast forward or fast rewind in order to playback the same tracks for detection of silence intervals as those selected for listening.
REFERENCES:
patent: 3665117 (1972-05-01), Staar
patent: 4026496 (1977-05-01), Kaneda
patent: 4173320 (1979-11-01), Schatteman
patent: 4202220 (1980-05-01), Matsumoto
patent: 4212438 (1980-07-01), Schatteman
patent: 4225894 (1980-09-01), Fulukawa et al.
patent: 4228472 (1980-10-01), Magata et al.
Staar S.A.
Wolff John H.
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