Coding pattern comprising tags with X and Y coordinate data divided into respective halves of each tag
First Claim
1. A substrate having a coding pattern disposed on a surface thereof, said coding pattern comprising:
- a plurality of contiguous tags, each tag comprising x-coordinate data and y-coordinate data, wherein a y-axis is nominally defined as north-south and an x-axis is nominally defined as east-west; and
a plurality of data elements contained in each tag, said x-coordinate data being represented by a respective set of data elements and said y-coordinate data being represented by a respective set of data elements,wherein;
said x-coordinate data has two replications within a respective tag, a first replication in a western half of said tag and a second replication in an eastern half of said tag; and
said y-coordinate data has two replications within a respective tag, a first replication in a northern half of said tag and a second replication in a southern half of said tag,and wherein fragments of said coordinate data are arranged such that any tag-sized portion of said coding pattern is guaranteed to contain said x-coordinate data and said y-coordinate data for a tag irrespective of whether a whole tag is contained in said portion.
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Abstract
A substrate having a coding pattern disposed on a surface thereof. The coding pattern comprises a plurality of contiguous tags, each tag comprising x-coordinate data and y-coordinate data. A y-axis is nominally defined as north-south and an x-axis is nominally defined as east-west. A plurality of data elements are contained in each tag. The x-coordinate data is represented by a respective set of data elements and the y-coordinate data is represented by a respective set of data elements. The x-coordinate data has two replications within a respective tag, a first replication in a western half of the tag and a second replication in an eastern half of the tag. The y-coordinate data has two replications within a respective tag, a first replication in a northern half of the tag and a second replication in a southern half of the tag. Fragments of the coordinate data are arranged such that any tag-sized portion of the coding pattern is guaranteed to contain the x-coordinate data and the y-coordinate data for a tag irrespective of whether a whole tag is contained in the portion.
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Citations
20 Claims
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1. A substrate having a coding pattern disposed on a surface thereof, said coding pattern comprising:
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a plurality of contiguous tags, each tag comprising x-coordinate data and y-coordinate data, wherein a y-axis is nominally defined as north-south and an x-axis is nominally defined as east-west; and a plurality of data elements contained in each tag, said x-coordinate data being represented by a respective set of data elements and said y-coordinate data being represented by a respective set of data elements, wherein; said x-coordinate data has two replications within a respective tag, a first replication in a western half of said tag and a second replication in an eastern half of said tag; and said y-coordinate data has two replications within a respective tag, a first replication in a northern half of said tag and a second replication in a southern half of said tag, and wherein fragments of said coordinate data are arranged such that any tag-sized portion of said coding pattern is guaranteed to contain said x-coordinate data and said y-coordinate data for a tag irrespective of whether a whole tag is contained in said portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification