Patent ID: 6791627
Filing Date: 2004-09-14
Classification: H04N

Abstract:
A television signal receiver for receiving and processing television signals that comprise modulated video signals and modulated audio signals, the receiver comprising:a tuner for receiving selected television signals and furnishing at least intermediate frequency (IF) signals; a SAW filter connected to the tuner and a video demodulator for demodulating the video signals from the SAW filter to obtain demodulated video signals for further processing; a generator for supplying SIF signals comprising the modulated audio signals on a carrier frequency equal to the difference between a carrier frequency of the modulated video signals and a carrier frequency of the modulated audio signals in the television signals; an audio demodulator for demodulating audio signals from the SIF signals from the generator to obtain demodulated audio signals for further processing; means for generating a generator frequency signal having a frequency equal to a difference between the carrier frequency of the modulated audio signals and the carrier frequency of the SIF signals; and a mixer for mixing the IF signals with the generator frequency signal to produce the SIF signals, wherein the generator is connected with the tuner and wherein the audio demodulator is connected with the generator.