METHOD AND DEVICE FOR DIGITAL SIGNAL CODING, METHOD AND DEVICE FOR DIGITAL SIGNAL TRANSMISSION, AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To simplify the algorithm for multiplexing. SOLUTION: An access unit detector 1 detects a size of an access unit and decode time information and gives them to a pseudo access unit computer 2 and gives the decode time information to a packetizer 3. The pseudo access unit computer 2 calculates the size of the pseudo access unit and a time (pseudo decode time) received by a pre-stage buffer of a decoder (STD) and provides an output to a scheduler 4. The scheduler 4 calculates a time (clock reference) when a multiplexed stream is fed to the decoder and a size of a packet and provides an output to the packetizer 3. The packetizer 3 divides or integrates an elementary stream into a pseudo access unit for packet processing and encodes the decode time and the clock reference in the stream to generate the MPEG system stream.