Luminance/chrominance separating circuit using predetermined sep

Details Luminance/chrominance separating circuit using predetermined sep Luminance/chrominance separating circuit using predetermined sep

1995-07-11

1996-08-20

Metjahic, Safet

Television

Image signal processing circuitry specific to television

Chrominance-luminance signal separation

348665, 348667, H04N 978

Patent

active

055483429

ABSTRACT:
A vertical impulse detecting circuit 104 detects the difference between a level of data of a present horizontal line of an input composite picture signal and a level of data of each of a horizontal line a plurality of lines ahead and a horizontal line a plurality of lines behind. Either an output signal of a three-line chrominance signal separating circuit 100 or an output signal of a horizontal chrominance signal separating circuit 101 is selected as a chrominance signal (CC) that is supplied to a subtracter 105 according to an output signal of the vertical impulse detecting circuit 104.

REFERENCES:
patent: 4803547 (1989-02-01), Stratton
patent: 4994906 (1991-02-01), Moriwake
patent: 5173768 (1992-12-01), Sowig et al.
patent: 5216495 (1993-06-01), Suwald et al.
patent: 5264922 (1993-11-01), Senuma
patent: 5335021 (1994-08-01), Sawada
patent: 5394193 (1995-02-01), Kim
patent: 5426470 (1995-06-01), Kita et al.

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