Patent ID: 7103100

Claim:
A digital signal processing method, comprising: inputting an encoded digital video signal and an encoded digital audio signal; accessing a decoding program for decoding the encoded digital video signal and the encoded digital audio signal from a program memory; executing the decoding program to decode the encoded digital video signal and the encoded digital audio signal in a decoding operation to thereby generate a decoded digital video signal and a decoded digital audio signal as a plurality of frames; storing the decoded digital video signal in a buffer as data corresponding to the plurality of frames; storing management data in a FIFO format, the management data indicating an output order of the plurality of frames; and controlling the decoding operation based on the output order of the plurality of frames; wherein decoding of the encoded digital audio signal is set to a higher priority than decoding of the encoded digital video signal; and wherein if the decoding operation on the encoded digital video signal is not completed within one frame period, the decoding operation is continued in the following frame period.