Patent ID: 6674801
Filing Date: 2004-01-06
Classification: H04N

Abstract:
A picture decoding synchronizing circuit, comprising:a detector for detecting whether at least one of a presentation time stamp (PTS) and a decoding time stamp (DTS) which are transferred through an input bit stream is distorted by an error, and outputting a detect signal; a determiner for determining an actual DTS value using a transferred PTS and DTS if no errors are detected from the transferred PTS and DTS according to the detect signal, and determining an approximated DTS value using the value obtained by adding a DTS value of a previous picture to a predetermined offset value, if an error is detected in at least one of said PTS and said DTS; and a decoder for decoding the input bit stream in units of a picture, in synchronization with one of the actual DTS value and the approximated DTS value.