Patent ID: 7535514
Filing Date: 2009-05-19
Classification: H04N

Abstract:
1. A method for decoding a SECAM composite video baseband signal, comprising: band-pass filtering the SECAM composite video baseband signal to separate a chrominance signal component; down-mixing the chrominance signal component from a high frequency band into a low frequency band to generate at least two down-mixed signals having a substantially phase difference relative to each other; cloche-filtering the at least two down-mixed signals to generate at least two cloche-filtered signals; differentiating each of the at least two cloche-filtered signals to generate at least two differentiated signals; squaring each of the at least two differentiated signals to generate at least two squared signals; summing the at least two squared signals to generate a summed signal; and taking a square-root of the summed signal to generate a decoded signal.