Patent ID: 7054400

Claim:
A digital AV signal processing apparatus, comprising: a buffer for storing digital data input to the digital AV signal processing apparatus, and outputting the digital data as output digital data; a D/A converter for converting the output digital data to analog data; a voltage-controlled oscillator for generating a clock signal to control a conversion rate of the D/A converter; and a voltage-controlled oscillator controller for detecting a data amount of the digital data stored in the buffer, and controlling a frequency of the clock signal based on a deviation in the detected data amount from a first predetermined value and a time integral of the deviation value, wherein the voltage-controlled oscillator controller comprises: a first comparator that detects the deviation in the detected data amount from the first predetermined value and outputs first output data based on the deviation and a gain K 1 , and a second comparator that detects the deviation in the detected data amount from the first predetermined value and outputs second output data based on the deviation and a gain K 2 .