System for distributing and recovering digitized composite SECAM

Details System for distributing and recovering digitized composite SECAM System for distributing and recovering digitized composite SECAM

1988-09-30

1991-02-12

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

360 22, 358314, H04N 964

Patent

active

049928570

ABSTRACT:
A technique for concealing large data losses such as the 50% data loss experienced when a data channel of, for example, a two channel composite SECAM digital video apparatus is lost. The digitized video samples are grouped and the groups are distributed into alternate channels of the two digital channels. Upon receiving the data, a channel multiplexer reassembles the groups of samples. If a data channel is lost, the sample distribution pattern cooperates with selected algorithms in a compromise which allows the system to recover sufficient luminance and chrominance information to provide acceptable concealment of the lost data.

REFERENCES:
patent: 4277807 (1981-07-01), Baldwin

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