SAMPLING FREQUENCY CONVERTER, SAMPLING FREQUENCY CONVERSION METHOD, VIDEO SIGNAL PROCESSOR, AND VIDEO SIGNAL PROCESSING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a video signal processor that can realize rate conversion of a digital video signal without the need for an analog PLL circuit. SOLUTION: The video signal processing unit is provided with a DD conversion circuit 109 that applies interpolation processing to a digital video signal locked to a bust clock of 14.3 MHz so as to convert its sampling data into data to be locked to a free-run clock of 13.5 MHz and with a frame memory circuit 110 that stores the digital video signal outputted from the DD conversion circuit 109 on the basis of the 14.3 MHz burst clock and reads the stored digital video signal out by the 13.5 MHz clock S112.