Data stream multiplexing apparatus and method, and record...

Details Data stream multiplexing apparatus and method, and record... Data stream multiplexing apparatus and method, and record...

H - Electricity

04

N

H04N 7/50 (2006.01) H04J 3/06 (2006.01) H04N 5/272 (2006.01) H04N 5/917 (2006.01) H04N 7/52 (2006.01) H04N 9/82 (2006.01) H04N 9/804 (2006.01)

Patent

CA 2177946

A data stream multiplexing apparatus having a stream modifier for producing modified sub-picture data stream from a sub-picture data stream where a first sub-picture data unit containing pixel data forming a sub-picture image with a preset display time period is located along a time axis by additionally locating at least one of second sub-picture data unit having almost same contents as the first sub-picture data unit within the display time period of the first sub-picture data unit on the sub-picture data stream, and a multiplexer responsive to input modified sub-picture data stream produced by the stream modifying means and other data streams reproduced in synchronous with the modified sub-picture data stream, for multiplexing these streams after packetizing them by a prescribed length.

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