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Method of generating interface surface having rotationally symmetric coded data

  • US 7,715,662 B2
  • Filed: 05/04/2009
  • Issued: 05/11/2010
  • Est. Priority Date: 09/17/1999
  • Status: Expired due to Fees
First Claim
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1. A method of generating an interface surface comprising the steps of:

  • generating machine-readable coded data using a computer/processor 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

    printing the coded data onto a surface to generate an interface surface.

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