Signal processing apparatus for adding synchronizing signal to h

Details Signal processing apparatus for adding synchronizing signal to h Signal processing apparatus for adding synchronizing signal to h

1996-12-13

1998-09-22

Chin, Tommy P.

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386 12, 386 31, 3488452, 348519, 348502, H04N 0718

Patent

active

058127313

ABSTRACT:
A signal processing circuit for adding a synchronizing signal to a predetermined signal, wherein the synchronizing signal oscillates to one side from a reference level of the synchronizing signal, and wherein the predetermined signal oscillates to one side from a reference level of the synchronizing signal, and wherein the predetermined signal oscillates to one or both sides from a reference level of the predetermined signal. The signal processing circuit includes a synchronizing signal adding circuit for adding the synchronizing signal to the predetermined signal, and a signal level adjusting circuit for adjusting the reference level and the amplitude of the synchronizing signal, wherein the signal level adjusting circuit makes the reference level of the synchronizing signal substantially identical to the reference level of the predetermined signal, and also makes an amplitude of the synchronizing signal with respect to the reference level thereof larger than the maximum deviation of the predetermined signal from the reference level thereof.

REFERENCES:
patent: 4994923 (1991-02-01), Itoh et al.
patent: 5029012 (1991-07-01), Sato
patent: 5083212 (1992-01-01), Owa et al.
patent: 5187569 (1993-02-01), Tani
patent: 5225913 (1993-07-01), Sato
patent: 5345271 (1994-09-01), Shin
patent: 5570200 (1996-10-01), Banno et al.

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