| http://www.w3.org/ns/prov#value | - Since the data to be compressed by the compression processing means 50 have binary or multivalued gradation, the compression processing means 50 uses data compression of such a reversible coding system as MH (Modified Huffman) coding, MR (Modified Read) coding or MMR (Modified Modified Read) coding which are used for a facsimile machine or the like, and a slide dictionary type LZ (Lempel-Ziv) codi
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