Patent ID: 7746412
Filing Date: 2010-06-29
Classification: H03D,H03J,H04N

Abstract:
1. A television receiver comprising: a receiver input for receiving an RF signal; a first mixer having a first input coupled to said receiver and a second input coupled to a first local oscillator, said first local oscillator is controlled digitally to generate a first reference signal; and a second mixer having a first input coupled to an output of said first mixer and a second input coupled to a second local oscillator, said second local oscillator generating a second reference signal, wherein said second mixer comprises: a phase splitter having an input coupled to said second local oscillator; a first and a second multiplier, wherein each multiplier has a first input coupled to an output of said phase splitter and a second input coupled to the output of said first mixer; and a summer to combine the output of each multiplier.