Patent ID: 8212923

Claim:
An apparatus for performing SECAM line identification in an analog television, wherein the SECAM line comprises one of a red line and a blue line, said apparatus comprising: an accumulator that accumulates a frequency modulation (FM) demodulated output corresponding to a color reference tone for each said SECAM line; a first leakage average filter operatively connected to said accumulator, wherein said first leakage average filter receives a first result from said accumulator; a second leakage average filter operatively connected to said accumulator, wherein said second leakage average filter receives a second result from said accumulator; and a line decision block that compares said first result of said first leakage average filter and said second result of said second leakage average filter, wherein when there is a change between a relative magnitude of said first leakage average filter and said second leakage average filter, said line decision block issues a switch command to said first leakage average filter and said second leakage average filter, and switches a stored values between said first leakage average filter and said second leakage average filter.