Patent ID: 8212942
Filing Date: 2012-07-03
Classification: H04N

Abstract:
1. A method of controlling a gain in an input digital signal received from a sigma-delta analog-to-digital converter (ΣΔADC) that converts an analog television signal from a tuner to said input digital signal for an analog television receiver, wherein said tuner introduces a DC component to said analog television signal, wherein said input digital signal comprises a video carrier, wherein said video carrier comprising a Luma carrier, and wherein said analog television receiver comprising: a first cascaded integrator comb (CIC) filter that receives said input digital signal from said ΣΔADC; a first down-sampler operatively connected to said first CIC filter, said first down-sampler comprising a down sampling factor of two; a half-band filter operatively connected to said first down-sampler; a second down-sampler operatively connected to said half-band filter; and a first adjacent channel interference (ACI) rejection filter operatively connected to said second down-sampler, wherein said first ACI rejection filter comprises an interpolated filter that provides a sharp transition band performance, wherein said interpolated filter comprises a zero-coefficient for alternate taps, wherein said method comprises: