Video signal processor for progressive scanning

Details Video signal processor for progressive scanning Video signal processor for progressive scanning

H - Electricity

04

N

350/36

H04N 5/14 (2006.01) H04N 5/44 (2006.01) H04N 5/46 (2006.01) H04N 9/64 (2006.01)

Patent

CA 1219335

RCA 80,889 ABSTRACT VIDEO SIGNAL PROCESSOR FOR PROGRESSIVE SCANNING An interlaced composite video signal (Vin) repeating at an fH line rate is coupled to a comb filter (22) to produce separated luminance (Ycm) and chrominance (C) signals. The chrominance signal (C) is demodulated (33) to develop color mixture signals (I,Q). The luminance (Ycm) and color mixture (I,Q) signals are applied to a color matrix (34,36) for generating a first set of R,G,B color signals, which at the fH rate. A time compression circuit (37) time compresses the R,G,B signals to generate a set of compressed color signals, repeating at a double line rate of 2fH. A switching arrangement (40) coupled to the matirx (36), the external source and the time compression circuit selectively applies to the time compression circuit (37), either the R,G,B signals derived from the source of the composite video signal or R,G,B signals directly obtained from an external video source (38).

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