Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1980-07-16
1983-02-08
Kilgore, Robert M.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
360 741, 360 745, G11B 1700, G11B 1548, G11B 1518
Patent
active
043731708
ABSTRACT:
A playback mode switching circuit for a tape recorder in which, when the direction of rotation of the capstan motor is changed upon switching between playback modes, a predetermined period of time is provided for stabilizing the rotation of the capstan motor from the time instant that the playback mode is switched until a new playback operation has been established. Also, if a playback mode switching operation is effected during the predetermined period of time, the predetermined period of time is lengthened. A capstan drive circuit operates in response to outputs of a first flip-flop the state of which is determined by the application thereto of forward and reverse operation switching signals. The outputs of the first flip-flop are differentiated and coupled to a one-shot multivibrator which determines the period of time before which the newly-selected playback mode can be effected. A second flip-flop which operates in response to fast-forward and rewind switching signals is coupled through a gating circuit controlled by outputs of the first flip-flop circuit to differentiation circuits the outputs of which are coupled to forward and reverse inputs of a control circuit.
REFERENCES:
patent: 3549823 (1970-12-01), Pastor
patent: 3810238 (1974-05-01), Staar
patent: 3921215 (1975-11-01), Asami
patent: 4279006 (1981-07-01), Sasaki
patent: 4301481 (1981-11-01), Suzuki
Honda Satoru
Sunaga Yoshimitsu
Kilgore Robert M.
Pioneer Electronic Corporation
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