Method and apparatus for concealing errors in a digital televisi

Details Method and apparatus for concealing errors in a digital televisi Method and apparatus for concealing errors in a digital televisi

1991-10-08

1993-09-07

Powell, Mark R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

371 31, H04N 521

Patent

active

052434281

ABSTRACT:
A method and apparatus for concealing errors occurring during the transmission and or reception of digital television signals. Blocks of video information are received and if any of the blocks contain errors including missing coefficients and/or motion vectors which are not correctable by the error correction circuitry, they are concealed by deriving replacement coefficients and/or motion vectors from at least one of the other received blocks of video.

REFERENCES:
patent: 4792953 (1988-12-01), Pasdera et al.
patent: 4807033 (1989-02-01), Keesen et al.
patent: 4829523 (1989-05-01), Bretl
patent: 4897724 (1990-01-01), Veldhuis
Darragh et al., "Fixed Distortion Subband Coding of Images for Packet-Switched Networks", IEEE JSAC, vol. 7, No. 5, Jun. 1989.
Veldhuis, "Adaptive Restoration of Unknown Samples in Discrete-Time Signals and Digital Images", Jun. 1988, pp. 1-154.
Wada et al., "Selective Recovery of Video Packet Loss Using Error Concealment", IEEE JSAC, vol. 7, No. 5, Jun. 1989.

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