Magnetic recording and reproducing apparatus

Details Magnetic recording and reproducing apparatus Magnetic recording and reproducing apparatus

1991-12-05

1995-07-11

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Record editing

360 30, 358340, 358343, G11B 502

Patent

active

054326494

ABSTRACT:
A magnetic recording and reproducing apparatus wherein synchronizing separation of a reproduction video signal can be performed accurately and a stabilized reproduction video signal can be obtained. The magnetic recording and reproducing apparatus includes a switch device for selectively inserting, upon recording, a PCM modulated audio signal into a blanking period of an FM modulated video signal, a PCM region signal generator for identifying a region of a PCM modulated audio signal in a reproduction signal reproduced by a rotary head and generating a control signal representative of a PCM audio signal region, an FM demodulator for FM demodulating a reproduction signal from the rotary head into a reproduction FM demodulation signal, and a clip circuit for clipping a lower end portion of a PCM audio signal region of a reproduction FM demodulation signal from the FM demodulator in accordance with a control signal generated from the PCM region signal generator.

REFERENCES:
patent: 3446914 (1969-05-01), Hodge
patent: 4374398 (1983-02-01), Yamashita et al.
patent: 4748517 (1988-05-01), Shibata et al.
patent: 4903129 (1990-02-01), Bell et al.
patent: 5103315 (1992-04-01), Kufta et al.
patent: 5181125 (1993-01-01), Kawakami

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