| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem that, although a maximum clock frequency is determined so that the processing of a sound processing circuit processing a frame is not collapsed, from an analysis of header storing information on the frame, a clock with an excessive frequency is supplied because the processing may be completed early depending on the content of main data. <P>SOLUTION: The clock is supplied to a signal processing circuit processing an input data signal at a frequency lower than a maximum frequency determined by a frequency decision circuit, and the clock is varied according to the processing status of one frame by a frequency determination circuit, thereby reducing power consumption. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
