Dynamic magnetic information storage or retrieval – Record editing
Patent
1986-06-02
1989-01-03
Cardillo, Raymond F.
Dynamic magnetic information storage or retrieval
Record editing
358335, 360 101, 360 64, 360 70, H04N 5783
Patent
active
047961031
ABSTRACT:
A control pulse recording circuit for a magnetic recording and reproducing apparatus having standard and expanded play modes, comprising an oscillator for generating a predetermined signal having a predetermined frequency which is higher than that of the vertical synchronizing signal of a video signal; a counter for counting the predetermined signal to produce a 30 Hz signal when a counted value in the counter reaches a threshold value with a timing which has been delayed by a predetermined time from every other vertical synchronizing signal in a recording mode; a circuit supplied with the 30 Hz signal for producing 30 Hz pulses; and control head circuitry for recording the 30 Hz pulses on a magnetic tape in the recording mode. The 30 Hz pulses are recorded on the magnetic tape with a timing delayed by a delay time from a timing of every other vertical synchronizing signal in both the standard and expanded play modes.
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Cardillo Raymond F.
Meller Michael N.
Victor Company of Japan Ltd.
Young W. R.
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