Patent ID: 7864904
Filing Date: 2011-01-04
Classification: H04B,H04H

Abstract:
1. A method performed in a television receiver for processing an input signal that includes desired data received via a desired channel of a plurality of frequency channels and unwanted received on a neighboring channel, the method performed in the television receiver comprising: sampling the input signal with an adjustable sampling frequency wherein the sampling frequency is between two to six times the channel bandwidth of the desired channel to provide digital data; band-pass filtering the digital data with a band-pass filter having a pass-band corresponding to the channel width of the desired channel to provide a band-pass filtered signal; and demodulating the band-pass filtered signal; wherein the adjustable sampling frequency is set to filter unwanted data prior to demodulation of the desired data in the digital domain with a high-attenuation digital band-pass filter; wherein the adjustable sampling frequency is set high enough for aliasing-free sampling of the data of the desired channel and the data of the higher-frequency neighboring channel; and wherein the sampling frequency is set high enough for aliasing-free sampling of the desired channel and several higher-frequency neighboring channels especially at least two such channels.