Recording and reproducing system

Details Recording and reproducing system Recording and reproducing system

1978-06-26

1981-12-01

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of equalizing

360 29, G11B 545, G11B 502

Patent

active

043039529

ABSTRACT:
A video signal recording and reproducing system in which a video signal to be recorded is passed through preemphasis means and subsequently angular modulated so that it is recorded on a record medium. During playback operation, the video signal is angular demodulated and deemphasized through a deemphasis means. Preemphasis means comprises both a non-linear preemphasis circuit and a fixed preemphasis circuit. The deemphasis means similarly comprises a fixed deemphasis circuit and a non-linear deemphasis circuit. Each of the non-linear circuits is responsive to the amplitude of an input signal thereon.

REFERENCES:
patent: 3288930 (1966-11-01), Johnson
patent: 3346703 (1967-10-01), Mullin et al.
patent: 3659042 (1972-04-01), Kennedy et al.
patent: 3840890 (1974-10-01), Sunderland
patent: 3944853 (1976-03-01), Cooper
patent: 4122502 (1978-10-01), Kobayashi
Electronic Designers' Handbook by Landee et al., McGraw Hill Book Co., .COPYRGT.1957, Sec. 12-6, 12-7.

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