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Contextual information encoded in a formed expression

  • US 8,542,952 B2
  • Filed: 08/04/2010
  • Issued: 09/24/2013
  • Est. Priority Date: 03/18/2005
  • Status: Expired due to Fees
First Claim
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1. A device operable in a context, the device comprising:

  • a writing element operable to form a mark on a surface in response to a movement of the writing element with respect to the surface, the mark following a contour of the movement of the writing element; and

    a controller operable to encode information into the mark corresponding to the context of the device by regulating the formation of the mark, the encoded information not being included in a content otherwise formed on the surface by the writing element.

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