| 摘要 |
A partial transport stream (TS) is temporarily recorded in a recording medium before being transmitted to a network. Here, when the partial TS is generated, null packets (invalid packets) are inserted into some of positions of packets determined not to be recorded, at a predetermined rate, and the resultant partial TS is recorded into the recording medium. When transmission is performed, the null packets previously inserted during recording are each replaced with a packet which contains information which is required during transmission, e.g., a program-specific information/service information (PSI/SI) packet. As a result, the load of packet inserting process during transmission can be reduced.
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