Error concealment system using dropout severity information for

Details Error concealment system using dropout severity information for Error concealment system using dropout severity information for

1984-09-07

1985-05-14

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 36, 358 37, 358163, 358167, 358314, 358336, 358327, 371 65, H04N 521, H04N 9535

Patent

active

045176000

ABSTRACT:
An error concealment system for a digital video signal uses different methods of concealment in accordance with the severity of the error. An adaptive estimate (horizontal or vertical average) is used if all pixels need for such an estimate are valid. If not, a four pixel average is used. If that is not possible a vertical average is used, and finally a horizontal average is used. If the error is very severe, then a line store provides the last valid line.

REFERENCES:
patent: 4122489 (1978-10-01), Bolger
patent: 4368483 (1983-01-01), Liu
patent: 4376289 (1983-03-01), Reitmeier
patent: 4376955 (1983-03-01), Reitmeier
patent: 4377820 (1983-03-01), Reitmeier
patent: 4381519 (1983-04-01), Wilkinson

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