Error concealment system

Details Error concealment system Error concealment system

H - Electricity

03

M

354/69

H03M 3/02 (2006.01) H04B 14/06 (2006.01)

Patent

CA 1266919

ABSTRACT ERROR CONCEALMENT SYSTEM A delta modulation decoder for concealing transmission bit errors is provided. The decoder decodes digital signals received from an encoder where the digital signals received includes data in the form of blocks of one bit words and inform- ation derived from the data at the encoder. The information is related to the number of 1's in each of the blocks. The decoder includes means for deriving information related to the number of 1's in each received block of words at the decoder and means for comparing such information to the corresponding information re- ceived from the encoder to detect the presence and polarity of any transmission or storage bit errors. The decoder also in- cludes means for introducing into each block of words received from the encoder determined to contain one or more bit errors at least one bit error of the opposite polarity from that detect- ed.

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