Patent ID: 6438169
Filing Date: 2002-08-20
Classification: H04N

Abstract:
A video signal compressing method for compressing a video signal for a system in which for a synchronism between a plurality of compressed signals, a presentation time stamp (PTS) and/or a decode time stamp (DTS) which indicate when each access unit is to be presented and decoded by a particular decoder is multiplexed in a stream with compressed video signals for transmission, comprising the steps of:compressing a video signal to generate a compressed signal; and generating the following as access unit information (AUI) for use to multiplex the compressed data of the video signal: picture_size, picture_type, repeat_first_field, and a flag indicating the occurrence of a big picture (big_picture_flag), which is used in the multiplexing process to determine whether a num of field DTS delay should be added to said compressed video signals to prevent an underflow from occurring in a decoder buffer.