Television signal transmission system with two levels of...

Details Television signal transmission system with two levels of... Television signal transmission system with two levels of...

H - Electricity

04

N

H04N 7/12 (2006.01) H04N 5/44 (2006.01) H04N 7/04 (2006.01) H04N 7/24 (2006.01) H04N 7/26 (2006.01) H04N 7/32 (2006.01)

Patent

CA 2106002

ABSTRACT A frame of compressed video data is formatted for transmission into a plurality of data segments, a first group of which are encoded in the form of a plurality of four-level symbols and a second group of which are encoded in the form of a plurality of two-level symbols for providing improved noise performance. The partition between the first and second groups of data segments may be established on a fixed basis, a variable basis dependent upon the effective level of compression, or a combination of both. Preferably, the two levels of the second group comprise a subset of the four levels of the first group.

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