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US 2012/0267439 A1Published application
Position-coding pattern having tag coordinates encoded by bit-shifted subsequences of cyclic position code
AssigneeSilverbrook Research Pty Ltd
InventorPaul Lapstun
Life of this patent
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Abstract
A substrate having a position-coding pattern disposed on a surface thereof. The position-coding pattern comprises a plurality of tags. Each tag encodes a w-bit subsequence of a cyclic code sequence. The w-bit subsequence maps to a corresponding coordinate codeword for the tag. Adjacent tags contain a w-bit subsequence shifted by one bit relative to each other in the cyclic code sequence.
Claims20
A substrate having a position-coding pattern disposed on a surface thereof, said position-coding pattern comprising:
- a plurality of tags, each tag encoding a w-bit subsequence of a cyclic code sequence, said w-bit subsequence mapping to a corresponding coordinate codeword for said tag, wherein adjacent tags contain w-bit subsequences shifted by one bit relative to each other in the cyclic code sequence.
Dependencies are inferred from the claim text.