| http://www.w3.org/ns/prov#value | - uding: (a) at least one compression means for compressing information such as an input signal in a accordance with one of a plurality of compression laws; (b) at least one expansion means for expanding information such as an input signal in accordance with one of a plurality of expansion laws; and (c) switching means for applying the to-be-compressed information selectively to compression means wh
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