Spectrum distribution adaptive luminance/color signal separating

Details Spectrum distribution adaptive luminance/color signal separating Spectrum distribution adaptive luminance/color signal separating

1993-04-21

1995-10-10

Kostak, Victor R.

Television

Image signal processing circuitry specific to television

Chrominance-luminance signal separation

348665, 348669, 348670, H04N 978

Patent

active

054575010

ABSTRACT:
A quadrature modulated luminance/color signal separating device applied in a color television receiver. The most suitable luminance/color signal separation is performed by determining sizes of interference components in gross, fine, and superfine structures, thereby solving cross-color, cross-luminance and deterioration of resolution generated in fixed luminance/color signal separation. According to the present device, a control signal properly corresponding to a composite video signal can be generated using a control signal generated in a spectrum distribution adaptive system, and consistency of control signal can be kept by introducing a concept of IIR filter into the control signal. Also, luminance/color signal separation suitable for human visual characteristic can be done, and the luminance/color separating function in a 2-dimensional region can be improved by interference elimination function.

REFERENCES:
patent: 4994906 (1991-02-01), Moriwake
patent: 5146318 (1992-08-01), Ishizuka et al.

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