H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/56, 350/81,
H04N 5/14 (2006.01) H04N 9/888 (2006.01)
Patent
CA 1208770
ABSTRACT OF THE DISCLOSURE A method of concealing errors in a digital television signal formed by a plurality of sample signals corresponding respectively to sample positions along a horizontal scan line of a television picture made up of a plurality of such lines, the method comprising, in respect of each sample signal which is in error, selecting from a plurality of algorithms a preferred algorithm for correcting the error sample signal, calculating a corrected value of the error sample signal using the preferred algorithm, and substituting the corrected sample signal for the error sample signal so as to conceal the error. Where any algorithm involves the use of an error sample, that algorithm is not used. The algorithms may be twelve in number and use algorithm is not located along four directions of the television picture to predict the known sample values at sample positions adjacent to the position of the error sample signal, the direction corresponding to the algorithm giving the best result being selected.
427394
Gowling Lafleur Henderson Llp
Sony Corporation
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