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Variable length code detection in a signal processing system

  • US 5,821,886 A
  • Filed: 10/18/1996
  • Issued: 10/13/1998
  • Est. Priority Date: 10/18/1996
  • Status: Expired due to Term
First Claim
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1. An apparatus to detect a current entropy code word in a group of bits, and the current entropy code word having a bit length, wherein a predetermined number of possible bit lengths of the current entropy code word is t+1, the apparatus comprising:

  • a plurality of matching modules, wherein the matching modules each receive the group of bits and each attempts to determine the bit length of the current entropy code word in the group of bits, and one of the matching modules determines the bit length of the current entropy code word in the group of bits and provides a unique output signal with respect to output signals of the remaining matching modules; and

    t+1 matching module groups wherein each of the t+1 matching module groups includes a predetermined number of matching modules, and each of the t+1 matching module groups represents one of the t+1predetermined number of possible bit lengths of the current entropy code word, wherein each of the t+1 matching module groups has an output signal, and the one of the t+1 matching module groups having the matching module having the unique output signal has a unique output signal, with respect to output signals of the remaining t+1matching module groups, that indicates the bit length of the current entropy code word.

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