Registers – Records – Particular code pattern
Reexamination Certificate
2011-04-05
2011-04-05
Lee, Michael G. (Department: 2876)
Registers
Records
Particular code pattern
C235S462040, C235S462380
Reexamination Certificate
active
07918404
ABSTRACT:
Machine-readable coded data disposed on or in a substrate in accordance with a layout, the layout having at least order n rotational symmetry, where n is at least two, the layout encoding an orientation codeword comprising a sequence of an integer multiple m of of n symbols, where m is one or more, each encoded symbol being distributed at n locations about a center of rotational symmetry of the layout such that decoding the symbols at each of the n orientations of the layout produces n representations of the orientation codeword, each representation comprising a different cyclic shift of the orientation codeword and being indicative of the degree of rotation of the layout, and wherein the orientation codeword is fault tolerant.
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Lee Michael G.
Nguyen Kimberly D.
Silverbrook Research Pty Ltd
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