Error concealment apparatus for a compressed video signal proces

Details Error concealment apparatus for a compressed video signal proces Error concealment apparatus for a compressed video signal proces

1992-06-16

1993-05-18

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358136, H04N 713

Patent

active

052125491

ABSTRACT:
Apparatus in a receiver includes error detection circuitry for detecting segments of transmitted encoded image data having non correctable errors. Further apparatus generates error maps for respective frames in the transmitted sequence. Responsive to the data in the error maps, known good image data or interpolated image data is substituted for data corresponding to the segments containing errors. Error indications for anchor frames, from which predictive frames are encoded, are propagated into error maps corresponding to the predictive encoded frames to accommodate error concealment of errors that may propagate into successive dependently encoded frame data.

REFERENCES:
patent: 4837618 (1989-06-01), Hatori
patent: 4872066 (1989-10-01), Yamagata et al.
patent: 4876595 (1989-10-01), Veldhuis
patent: 4891699 (1990-01-01), Hamada et al.
patent: 4941186 (1990-07-01), Massmann et al.
patent: 4942465 (1990-07-01), Ohta
patent: 4953034 (1990-08-01), Kanada
patent: 5040061 (1991-08-01), Yonemitsu

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