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Implement for optically inferring information from a planar jotting surface

  • US 7,203,384 B2
  • Filed: 08/13/2003
  • Issued: 04/10/2007
  • Est. Priority Date: 02/24/2003
  • Status: Active Grant
First Claim
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1. A jotting implement for inferring hand-jotted information from a jotting surface, said jotting implement comprising:

  • a) a nib for jotting;

    b) a means for determining when said nib is jotting on said jotting surface;

    c) an optical unit for viewing said jotting surface, said optical unit being indexed to said nib; and

    d) a processing unit for receiving optical data of said jotting surface from said optical unit and for determining from said optical data physical coordinates of said nib with respect to at least one corner of said jotting surface and at least one edge of said jotting surface.

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