Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1989-12-28
1991-07-16
Peng, John K.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 22, 358136, 358 21R, H04N 718, H04N 974, H04N 712
Patent
active
050329146
ABSTRACT:
An arrangement for detecting movement in a picture displayed on a television display. Y/C color separation detects movement in a displayed picture by generating a first movement detection signal with respect to luminance, a second movement detection signal with respect to luminance and a movement detection signal with respect to color. The first movement detection signal with respect to luminance represents the difference between a luminance signal extracted by Y/C separation in a first frame and a luminance signal extracted by Y/C separation in a second, adjacent frame. The second movement detection signal serves as an auxiliary detection signal, and indicates any leaking of the color signal into the luminance signal after Y/C separation. The auxiliary signal, which indicates the leakage of any color signal into the luminance signal, is able to minimize erroneous detection of movement due to leakage of the color signal.
REFERENCES:
patent: 4794454 (1988-12-01), Sugiyama et al.
patent: 4811092 (1989-03-01), Achiha et al.
patent: 4924305 (1990-05-01), Nakayama et al.
patent: 4930012 (1990-05-01), Fujita
NEC Home Electronics Ltd.
Peng John K.
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