Patent ID: 7292610

Claim:
A multiplexed data producing apparatus which multiplexes N (N: integer) pieces of object data comprising at least one type of data from the group consisting of video data, audio data, and digital data, each object data including time information from an encoding apparatus for encoding data to be multiplexed to produce one piece of multiplexed data, said multiplexed data-producing apparatus comprising: a temporal storage means for temporarily storing N pieces of object data; a control means for renewing time information of at least one piece of object data so that plural pieces of object data are reproduced in synchronization with each other for N pieces of temporarily stored object data; and a multiplexing means for multiplexing the processed object data to produce multiplexed data, wherein the control means uses time information of specified object data of N pieces of object data as a reference, and produces synchronization control data comprising absolute time information and time precision information based on a difference between time information of object data except specified object data of N pieces of object data and the time information used as a reference, and the control means produces priority information indicating that the reference clock is obtained on the basis of time information of object data of N pieces of object data based on when the produced multiplexed data is decoded.