Dynamic magnetic information storage or retrieval – Record editing
Patent
1989-05-16
1991-10-01
Envall, Jr., Roy N.
Dynamic magnetic information storage or retrieval
Record editing
360 7705, 360 7714, 358343, A04N 5782
Patent
active
050538900
ABSTRACT:
There is disclosed a magnetic recording and reproducing apparatus provided with a rotary drum wherein audio heads for recording/reproducing an audio signal, video heads for recording/reproducing a video signal, an erasing head for erasing recorded information are provided on the outer circumferential surface of the rotary drum, and a running magnetic tape is obliquely wound at a predetermined length on the outer circumferential surface. This apparatus is constituted so that, in an audio recording mode for recording the audio signal onto the tape by the audio heads, after a signal recorded on the tape is erased by the operation of the erasing head, the audio heads record onto the magnetic tape both signals of the audio signal and a control signal used for tracking servo at the time of reproducing operation, and that, in a video recording mode for recording the video signal at the surface layer portion of the tape by the video heads, the erasing head is inoperative, and, under the same state as the reproducing mode in which the servo system is synchronous with an input video signal, the video heads record the video signal at the surface layer portion of the tape of a track on which the audio signal has been recorded in the audio recording mode while carrying out tracking servo on the basis of the control signal reproduced from the tape.
REFERENCES:
patent: 4527202 (1985-07-01), Ohta
patent: 4533961 (1985-08-01), Shibata et al.
patent: 4607293 (1986-08-01), Okada et al.
patent: 4679097 (1987-07-01), Tomita
patent: 4821132 (1989-04-01), Hasegawa
Dang Hung T.
Envall Jr. Roy N.
Victor Company of Japan Ltd.
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