Digital hdtv data packet format and receiver therefor

Details Digital hdtv data packet format and receiver therefor Digital hdtv data packet format and receiver therefor

H - Electricity

04

N

H04N 11/02 (2006.01) H04N 5/00 (2006.01) H04N 5/44 (2006.01) H04N 7/24 (2006.01) H04N 7/50 (2006.01) H04N 7/52 (2006.01) H04N 7/54 (2006.01) H04N 7/60 (2006.01) H04N 7/64 (2006.01) H04N 11/04 (2006.01) H04N 11/24 (2006.01)

Patent

CA 2091816

A macroblock packet format is provided for use in a digital HDTV system wherein successive video frames are divided into a plurality of macroblocks. The macroblocks comprise a plurality of superblocks, each containing a plurality of luminance and chrominance video data blocks. A DLEN field is provided in the macroblock packet format to identify the length of the macroblock packet. The packets also include variable length encoded portions of video data. The macroblock packets are transmitted in a data multiplex that also includes a next macroblock position (NMP) word. A receiver compares the DLEN information with the NMP word to verify synchronization, and reacquires the signal if synchronization has been lost.

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