Color demodulation for digital television

Details Color demodulation for digital television Color demodulation for digital television

H - Electricity

04

N

H04N 9/78 (2006.01) H04N 7/01 (2006.01) H04N 9/30 (2006.01) H04N 9/64 (2006.01)

Patent

CA 2184128

A digital sampling and separation unit (12) for a television receiver (10) of a composite video signal, such as an NTSC signal, which has a color subcarrier. The video signal is sampled at a frequency selected in accordance with the invention. This frequency provides samples having a definite and repeating phase relationship with the subcarrier signal. (FIGURE 4). As a result, phase reference values can be used to convert the samples into correct color difference values.

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