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State machine apparatus and methods for encoding data in serial form and decoding using multiple tables

  • US 5,596,674 A
  • Filed: 05/26/1993
  • Issued: 01/21/1997
  • Est. Priority Date: 06/24/1992
  • Status: Expired due to Term
First Claim
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1. A serial data decoder for generating output data words according to a selectable one of a plurality of decoding tables, said serial data decoder comprising a state machine responsive to received bits of serial data so as to move between states within a selectable one of a plurality of branching hierarchies of states, each branching hierarchy corresponding to one of said plurality of decoding tables and being such that each bit of said serial data controls which succeeding state is selected until a state corresponding to a valid data word is reached, and wherein at least one of said plurality of branching hierarchies includes a state corresponding to a complete internal table selecting word for selecting a predetermined different branching hierarchy and corresponding decoding table for subsequent use from among said plurality of branching hierarchies.

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