发明名称 ARITHMETIC COMPRESSION ENCRYPTOR, ARITHMETIC COMPRESSION ENCRYPTING METHOD, AND PROGRAM
摘要 <p>An arithmetic compression encryptor is an arithmetic encoder, which encodes a symbol on the basis of the occurrence probability of the symbol output from a model unit for predicting the occurrence probability of the symbol, and controls a dynamic section linear mapping based on the occurrence probability of an input symbol through an encryption key to compress and encrypt an output code. This encryptor provides a high safety without damaging intrinsic data compression rate by arithmetic coding and disturbs the output code efficiently through a simple processing.</p>
申请公布号 WO2002058039(P1) 申请公布日期 2002.07.25
申请号 JP2002000366 申请日期 2002.01.21
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