Lossless data compression method based on LZ77, error code repair method, encoder and decoder
The invention relates to a lossless data compression method based on LZ77, an error code repair method, an encoder and a decoder. The compression method comprises the steps of: reading to-be-compressed character strings, and acquiring an encoded symbol sequence and to-be-encoded character strings; a...
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| creator | XU MANKUN PENG HUA TANG YONGWANG ZHENG ZHIZHONG WANG GANG WANG RAN MA JINQUAN JIN YANQING WANG JINGSONG PENG ZEYUAN |
| description | The invention relates to a lossless data compression method based on LZ77, an error code repair method, an encoder and a decoder. The compression method comprises the steps of: reading to-be-compressed character strings, and acquiring an encoded symbol sequence and to-be-encoded character strings; according to a sliding window parsing sequence, sequentially searching and recording longest matchingprefixes of a current to-be-encoded character string from the encoded symbol sequence; according to the matching multiplicity of the longest matching prefixes of the current to-be-encoded character string, determining embedded bit information; carrying out mapping on the embedded bit information and each longest matching prefix of the current to-be-encoded character string one by one; and according to a preset embedding value, selecting the corresponding longest matching prefix as a code word of the current to-be-encoded character string, outputting the code word, and until the code words ofall the to-be-encoded char |
| format | Patent |
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| subjects | BASIC ELECTRONIC CIRCUITRY CODE CONVERSION IN GENERAL CODING DECODING ELECTRICITY |
| title | Lossless data compression method based on LZ77, error code repair method, encoder and decoder |
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