Position-coding pattern comprised of tags containing contiguous cells
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United States of America Patent
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Sep 14, 2010
Grant Date -
Jan 7, 2010
app pub date -
Sep 15, 2009
filing date -
Feb 8, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A substrate having a position-coding pattern disposed on its surface thereof. The position-coding pattern has a plurality of target elements defining a target grid. The target grid includes a plurality of cells and each cell has a target element positioned at its corners so that neighboring cells share target elements. A plurality of tags are contained with the position-coding pattern, each tag being defined by a plurality of contiguous cells. Each tag contains respective location data encoded by a respective set of data elements.
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