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Wireless transmitter pen

  • US 7,663,775 B2
  • Filed: 09/21/2008
  • Issued: 02/16/2010
  • Est. Priority Date: 05/25/1999
  • Status: Expired due to Fees
First Claim
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1. A pen for sensing coded data on a page, the coded data printed on the page as a collection of tags using invisible ink, the pen comprising:

  • an elongate housing defining an internal space;

    an ink marking implement movably mounted within the space and including a marking nib to mark the page with ink;

    a sensor mounted within the space and configured to sense the coded data;

    a controller within the housing is configured to determine the position of the nib by imaging, in the infrared spectrum, an area of the page in the vicinity of the nib; and

    a transmitter mounted within the space and configured wirelessly to communicate data sensed by the sensor to a printer.

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