A digital IF demodulator includes an analog-to-digital (A/D) converter that receives an analog IF signal and converts it to a digital IF signal. A parallel multiplier then down-converts the digital IF signal to a baseband signal having a video component and an audio component. The frequency down-conversion...http://www.google.fr/patents/US7352411?utm_source=gb-gplus-shareBrevet US7352411 - Digital IF demodulator
