Reproducing apparatus with erasing device and erasing function b

Details Reproducing apparatus with erasing device and erasing function b Reproducing apparatus with erasing device and erasing function b

1987-03-31

1989-07-18

Faber, Alan

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

360 57, 360 331, G11B 509, G11B 5024, H04N 5781

Patent

active

048498327

ABSTRACT:
An erasing device for a magnetic video recorder is disclosed which includes a means for reproducing a code signal and a video signal from a magnetic medium. The code signal is discriminated to decide whether the video signal is a field video signal or a frame video signal. When the video signal is discriminated to be the frame video signal, the erasing device erases the video signal over a broader range than when the video signal is discriminated to be a field video signal.

REFERENCES:
patent: 3397283 (1968-08-01), Strosberg et al.
patent: 3723668 (1973-03-01), Ritchey, Jr.
patent: 4005483 (1977-01-01), Kuwano
patent: 4038692 (1977-07-01), Umeda et al.
patent: 4686661 (1987-08-01), Isaka
IBM Technical Disclosure Bulletin, "Variable Length Erasure on Write Error Recovery", Scully et al, vol. 11, No. 5, Oct. 1968.

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