CLOCK CONVERSION APPARATUS, FRAME PROCESSING APPARATUS AND FREQUENCY CONTROL METHOD

摘要

In the present invention a clock conversion apparatus (45) comprises an elastic store memory (64) where data is written in synchronization with a first clock and data is read in synchronization with a second clock; a phase comparator (80) that detects the phase difference between a third clock constituting the frequency dividing clock of the first clock to which a first variable phase shift been added and a fourth clock constituting the frequency dividing clock of the second clock to which a second variable phase shift has been added; and an oscillator (47) that generates as the second clock a clock having a frequency that is in accordance with such phase difference.