Rotating-head video signal recording apparatus

Details Rotating-head video signal recording apparatus Rotating-head video signal recording apparatus

1991-10-28

1994-05-24

Callahan, Timothy P.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 103, 360 351, 360 61, 360 64, 358321, G11B 2102

Patent

active

053154533

ABSTRACT:
In an apparatus for recording a video signal having interlaced fields on a recording medium sequentially using a plurality of rotating heads, a rotational phase of a rotating head relative to a vertical synchronizing signal of the video signal to be recorded is relatively switched for a period corresponding to a phase difference between a vertical synchronizing signal and a horizontal synchronizing signal of each field. It is thereby possible to obtain an excellent video signal without producing discontinuity of horizontal synchronizing signals in a reproducing operation even if a video signal of each field is recorded using any of the plurality of rotating heads having different rotational phases. At that time, objective rotational phases of a rotating cylinder provided with the plurality of rotating heads are present in the same number as the number of rotating heads. Hence, the speed of the start-up synchronizing operation is increased.

REFERENCES:
patent: 4484234 (1984-11-01), Kimura
patent: 4609952 (1986-09-01), Yoshino et al.
patent: 4757392 (1988-07-01), Awamoto et al.
patent: 4760468 (1988-07-01), Nakano et al.
patent: 4807056 (1989-02-01), Sasaki et al.
patent: 4887169 (1989-12-01), Bannai et al.
patent: 5008763 (1991-04-01), Horino
patent: 5019919 (1991-05-01), Nagashimi
patent: 5109285 (1992-04-01), Koga
Patent Abstracts of Japan, Publication No. JP 63-187781, Publication Date Jul. 12, 1988.

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