| http://www.w3.org/ns/prov#value | - The digital loop filter as claimed in claim 1, wherein:the phase error information indicates one of three logic values +1, -1 and 0; and said first loop filter means comprises means for accumulating the logic values indicated by the phase error information and for generating the first phase control information each time an accumulated result reaches ???N where N is an integer, and wherein said sec
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