Machine readable coded data with distributed encoding
First Claim
1. Machine-readable coded data disposed on or in a substrate, the coded data including a plurality of layouts located in a region, 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 the position of a respective one of the first symbols such that the first codeword is indicative of the orientation of the layout, each layout at least partially encoding a third codeword at least partially indicative of an identity of the region, the region identity being determined from two or more of the layouts.
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Abstract
Machine-readable coded data disposed on or in a substrate. The coded data includes a plurality of layouts located in a region, each layout having n identical sub-layouts rotated 1/n revolutions apart about a center of rotation. Each layout encoding a first codeword formed from a sequence of n first symbols, with each sub-layout defining the position of a respective one of the first symbols such that the first codeword is indicative of the orientation of the layout. Each layout also partially encodes a third codeword at least partially indicative of an identity of the region such that the region identity may be determined from two or more of the layouts.
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Citations
39 Claims
- 1. Machine-readable coded data disposed on or in a substrate, the coded data including a plurality of layouts located in a region, 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 the position of a respective one of the first symbols such that the first codeword is indicative of the orientation of the layout, each layout at least partially encoding a third codeword at least partially indicative of an identity of the region, the region identity being determined from two or more of the layouts.
Specification