Decoding apparatus
First Claim
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1. A decoding apparatus for decoding data transmitted from a coding apparatus, comprising:
- means for generating sample data adjacent to a sample datum to be decoded;
comparator means for comparing datum corresponding to the sample datum to be decoded and data corresponding to said adjacent sample data and providing respective comparison outputs;
correcting data generating means supplied with said comparison outputs of said comparator means for generating a correcting datum;
decoding means for decoding an original datum from said sample datum to be decoded; and
means for combining said correcting datum with said original datum decoded from the sample datum to be decoded.
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Abstract
In a decoding apparatus for decoding data, such as a digital video signal or the like, transmitted with a smaller number of bits than that of the original datum, sample data adjacent a sample datum to be decoded are separated from the transmitted data and compared with the sample datum to be decoded, whereupon a correcting datum is generated on the basis of the compared output. The original datum is recovered from the sample datum to be decoded and the correcting datum, whereby the quantizing error or distortion can be reduced without increasing the amount of encoded data.
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Citations
13 Claims
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1. A decoding apparatus for decoding data transmitted from a coding apparatus, comprising:
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means for generating sample data adjacent to a sample datum to be decoded; comparator means for comparing datum corresponding to the sample datum to be decoded and data corresponding to said adjacent sample data and providing respective comparison outputs; correcting data generating means supplied with said comparison outputs of said comparator means for generating a correcting datum; decoding means for decoding an original datum from said sample datum to be decoded; and means for combining said correcting datum with said original datum decoded from the sample datum to be decoded. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification