Method of generating interface surface having rotationally symmetric coded data
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United States of America Patent
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May 11, 2010
Grant Date -
Aug 27, 2009
app pub date -
May 4, 2009
filing date -
Sep 17, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of generating an interface surface is provided in which machine-readable coded data is generated to be arranged in accordance with a layout having n-fold rotational symmetry about a center of rotation, where n is at least two, the layout including n identical sub-layouts rotated 1/n revolutions apart about the center of rotation, each sub-layout defining the position of data elements, and including rotation-indicating data that distinguishes that sub-layout from at least one other sub-layout, and the coded data is printed onto a surface to generate an interface surface.
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