METHOD OF IMAGING A CODING PATTERN HAVING AN ORIENTATION IDENTIFIED VIA A PLURALITY OF DIRECTION COMPONENTS
First Claim
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1. A method of imaging a coding pattern disposed on a surface of a substrate, said method comprising the steps of:
- (a) capturing an image of a portion of said coding pattern, said coding pattern comprising;
a plurality of target elements defining a target grid, said target grid comprising a plurality of cells, wherein neighboring cells share target elements;
a plurality of data elements contained in each cell; and
a plurality of tags, each tag being defined by at least one cell, each tag comprising respective tag data encoded by a respective set of said data elements,wherein each cell comprises a plurality of registration symbols encoded by a respective set of said data elements, each registration symbol identifying a respective direction component of an orientation of a layout of said tag data with respect to said target grid; and
(b) sampling and decoding a plurality of said registration symbols contained in said imaged portion;
(c) determining, from the decoded registration symbols, the orientation of the layout of the tag data relative to the target grid; and
(d) using said determined orientation to sample and decode said tag data.
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Abstract
A method of imaging a coding pattern disposed on a surface of a substrate. The method comprises the steps of: (a) capturing an image of a portion of the coding pattern; (b) sampling and decoding a plurality of registration symbols contained in the imaged portion; (c) determining an orientation from the decoded registration symbols; and (d) using the determined orientation to sample and decode tag data.
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20 Claims
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1. A method of imaging a coding pattern disposed on a surface of a substrate, said method comprising the steps of:
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(a) capturing an image of a portion of said coding pattern, said coding pattern comprising; a plurality of target elements defining a target grid, said target grid comprising a plurality of cells, wherein neighboring cells share target elements; a plurality of data elements contained in each cell; and a plurality of tags, each tag being defined by at least one cell, each tag comprising respective tag data encoded by a respective set of said data elements, wherein each cell comprises a plurality of registration symbols encoded by a respective set of said data elements, each registration symbol identifying a respective direction component of an orientation of a layout of said tag data with respect to said target grid; and (b) sampling and decoding a plurality of said registration symbols contained in said imaged portion; (c) determining, from the decoded registration symbols, the orientation of the layout of the tag data relative to the target grid; and (d) using said determined orientation to sample and decode said tag data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for imaging a coding pattern disposed on a surface of a substrate, said system comprising:
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(A) said substrate, wherein said coding pattern comprises; a plurality of target elements defining a target grid, said target grid comprising a plurality of cells, wherein neighboring cells share target elements; a plurality of data elements contained in each cell; and a plurality of tags, each tag being defined by at least one cell, each tag comprising respective tag data encoded by a respective set of said data elements, wherein each cell comprises a plurality of registration symbols encoded by a respective set of said data elements, each registration symbol identifying a respective direction component of an orientation of a layout of said tag data with respect to said target grid; and (B) an optical reader comprising; an image sensor for capturing an image of a portion of said coding pattern; and a processor configured for; (i) sampling and decoding a plurality of said registration symbols contained in said imaged portion; (ii) determining, from the decoded registration symbols, the orientation of the layout of the tag data relative to the target grid; and (iii) using said determined orientation to sample and decode said tag data. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification