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Information indicating machine readable coded data

  • US 6,994,264 B2
  • Filed: 07/19/2004
  • Issued: 02/07/2006
  • Est. Priority Date: 10/25/2002
  • Status: Expired due to Fees
First Claim
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1. Machine-readable coded data disposed on or in a substrate, the coded data including a plurality of layouts, each layout having n identical sub-layouts rotated 1/n revolutions apart about a center of rotation, where n is at least two, each layout encoding:

  • a first codeword comprising a sequence of n first symbols, each sub-layout defining a position for a respective first symbol, the first symbol being indicative of the identity of the sub-layout;

    a second codeword comprising a number of second symbols, the second codeword being indicative of information regarding the respective layout; and

    ,a number of third symbols partially indicative of a third codeword.

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