Helical scan type playback apparatus for video data recorded on

Details Helical scan type playback apparatus for video data recorded on Helical scan type playback apparatus for video data recorded on

1993-03-16

1995-01-10

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358310, 358328, H04N 989

Patent

active

053812387

ABSTRACT:
A helical scan type playback apparatus comprising a plurality of magnetic heads, a position signal generation element for generating a signal indicative of each position of these magnetic heads, and a switching element for video signals played back by the plurality of magnetic heads in response to the position signal from the generation element, particularly a playback apparatus for information recorded on a video tape in which the phase of a low frequency band color signal is altered every track of a video tape on the basis of a predetermined rule, thereby allowing spectra of color signals not to overlap with each other between adjacent tracks. This playback apparatus comprises an element for storing the position signal after a first predetermined time has passed from the time when a vertical synchronizing signal of the video signal is received, and a readout element for reading out the position signal stored in the storage element after a second predetermined time has passed from the time when the vertical synchronizing signal is received, and outputting it.

REFERENCES:
patent: 4178606 (1979-12-01), Hirota
patent: 4631600 (1986-12-01), Fukui
patent: 4685006 (1987-08-01), Sato
patent: 4733312 (1988-03-01), Morimoto
patent: 5142377 (1992-08-01), Moriyama et al.
patent: 5223941 (1993-06-01), Namiki et al.

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