Information indicating machine readable coded data
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United States of America Patent
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-
Feb 7, 2006
Grant Date -
Jan 6, 2005
app pub date -
Jul 19, 2004
filing date -
Oct 25, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Machine-readable coded data disposed on or in a substrate. The coded data includes a plurality of layouts of two or more layout types, each layout having n identical sub-layouts rotated 1/n revolutions apart about a center of rotation. Each layout encodes a first codeword formed from a sequence of n first symbols, each sub-layout defining a position for a respective first symbol so that the first symbol indicates the identity of the sub-layout. The layout also encodes a second codeword formed from a number of second symbols, which indicative of information regarding the respective layout and a number of third symbols which are partially indicative of a third codeword.
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