Patent ID: 7852408
Filing Date: 2010-12-14
Classification: G09G,H03L,H04N

Abstract:
1. An apparatus comprising: a phase detector configured to generate a first signal based on a phase difference between a second signal and a third signal; a filter configured to filter said first signal; a voltage-controlled oscillator configured to generate a fourth signal based on said first signal; and a fractional divider configured to generate said second signal in response to (i) said fourth signal and (ii) a control signal, wherein (A) said fractional divider (i) generates said first signal oscillating at a frequency usable by a standard definition decoder by dividing said fourth signal by a first fraction that has (a) a denominator that is a first integer and (b) a numerator that is a second integer and (ii) generates said first signal oscillating at a frequency usable by a high definition decoder by dividing said fourth signal by a second fraction that has (a) a denominator that is a third integer and (b) a numerator that is a fourth integer and (B) said control signal switches said fractional divider between generating said first signal to oscillate at said frequency usable by said standard definition decoder and said frequency usable by said high definition decoder.