Surface having optically readable printed tags
First Claim
Patent Images
1. A surface having optically readable tags printed thereon, each tag comprising:
- a background pattern of markings and/or blanks, said background pattern being common to all tags and defining discrete areas;
coded data positioned within said discrete areas, said coded data being represented by a plurality of dots positioned according to an encoding scheme; and
orientation information positioned within said discrete areas, the orientation information being indicative of a rotational orientation of the tag.
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Abstract
A surface having an optically readable pattern of dots printed thereon. The pattern comprises an arbitrarily shaped constant background pattern of dots and/or blanks. The constant background pattern defines discrete areas of coded data represented by a plurality of dots positioned according to an encoding scheme. Each discrete area contains orientation information for enabling an optical reader to determine an orientation relative to the pattern of dots.
41 Citations
8 Claims
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1. A surface having optically readable tags printed thereon, each tag comprising:
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a background pattern of markings and/or blanks, said background pattern being common to all tags and defining discrete areas; coded data positioned within said discrete areas, said coded data being represented by a plurality of dots positioned according to an encoding scheme; and orientation information positioned within said discrete areas, the orientation information being indicative of a rotational orientation of the tag. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification