Cross color noise reduction and contour correction apparatus in

Details Cross color noise reduction and contour correction apparatus in Cross color noise reduction and contour correction apparatus in

1990-06-05

1991-05-28

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 16, 358 31, H04N 914, H04N 968, H04N 1114

Patent

active

050198955

ABSTRACT:
Common use of 1H delay circuits (14 and 15), which are used as parts of a contour correction circuit (17) and a comb filter for reducing the interference between the luminance signal and the color signal (cross color noises), reduces the required number of the 1H delay circuits, and the space for mounting the 1H delay circuits, and reduces the cost.

REFERENCES:
patent: 3546372 (1990-12-01), Dischert et al.
patent: 4609938 (1986-09-01), Suzuki
patent: 4644389 (1987-02-01), Nakagawa
patent: 4677461 (1987-06-01), Mizutani
patent: 4853765 (1989-08-01), Katsumata
patent: 4893176 (1990-01-01), Faroudja
Improving NTSC to Achieve Near-RGB Performance, by Yves Faroudja et al., SMPTE Journal, Aug. 1987, pp. 750 to 761.

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