Apparatus and methods for determining an initial huffman...

Details Apparatus and methods for determining an initial huffman... Apparatus and methods for determining an initial huffman...

H - Electricity

03

M

H03M 7/40 (2006.01) G06T 9/00 (2006.01) H04N 7/26 (2006.01) H04N 7/30 (2006.01)

Patent

CA 2170554

Apparatus and methods are provided for generating an output signal representing an initial Huffman Coding rate for use in compressing a received digital signal. The digital signal includes a plurality of digital sets wherein ones of the digital sets are non-unique. Ones of the digital sets are stored and an indicator is associated with each. The indicator represents the probability of occur- rence, or frequency, of the associated digital set within the digital signal. While more than one associated indica- tor remains stored, pairs of the associated indicators are selectively combined and each of the selectively combined pairs of associated indicators are accumulated to determine the initial Huffman Coding rate. The initial Huffman Coding rate is used to compress the digital signal.

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