Motion detection circuit calculates difference between input vid

Details Motion detection circuit calculates difference between input vid Motion detection circuit calculates difference between input vid

1996-07-22

1998-07-28

Powell, Mark R.

Television

Image signal processing circuitry specific to television

Chrominance-luminance signal separation

348670, H04N 978

Patent

active

057868727

ABSTRACT:
An apparatus and method in which a difference between lines in an input composite video signal is calculated. The difference is compared with a specified threshold to detect chrominance correlation. A difference between lines in a composite video signal which is delayed for a one-frame period is calculated. The difference is compared with the specified threshold to detect chrominance correlation. The difference between these chrominance correlations is calculated and is used as a motion detection signal. When this frame difference is smaller than a specified threshold, the motion detection signal is forcibly set to 0.

REFERENCES:
patent: 4930012 (1990-05-01), Fujita
patent: 5023713 (1991-06-01), Nishigori
patent: 5063438 (1991-11-01), Faroudja
patent: 5325186 (1994-06-01), Ishizuki et al.
patent: 5412434 (1995-05-01), Taniguchi et al.
patent: 5475445 (1995-12-01), Yamaguchi et al.
patent: 5500686 (1996-03-01), Yamaguchi et al.

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