Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Patent
1997-06-11
2000-07-18
Lee, Richard
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
3488452, 3488453, H04N 724
Patent
active
060917695
ABSTRACT:
A video decoder has an interfacing function for picture synchronization which can synchronize a decoding and display operation in units the size of a picture. The video decoder includes a transport stream (TS) demultiplexer and an interfacer. The TS demultiplexer is a packet separator for separating packetized elementary stream (PES) packet data of a desired program from a received transport stream (TS). The interfacer has an input buffer for receiving and storing the PES packet data, a PES filter for extracting the encoded video data from the PES packet data stored in the input buffer, a presentation time stamp (PTS) and decoding time stamp (DTS) extractor for extracting the time stamp information of the PTS and DTS contained in the PES packet data stored in the input buffer, a picture start code (PSC) detector for detecting the PSC contained in the PES packet data stored in the input buffer, and a multiplexer for multiplexing the time stamp information extracted from the PTS/DTS extractor with the corresponding picture start code of the encoded video data output from the PES filter, based on the PSC detected in the PSC detector, and outputting the multiplexed result. Thus, the time stamp information can be decoded together with the bit steam video data, to thereby facilitate synchronization of a picture unit and enable normal decoding and display.
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Lee Richard
Samsung Electronics Co,. Ltd.
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