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Handheld display device for interacting with printed substrate

  • US 8,031,357 B2
  • Filed: 03/30/2010
  • Issued: 10/04/2011
  • Est. Priority Date: 12/01/1999
  • Status: Expired due to Fees
First Claim
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1. A handheld display device for displaying and interacting with information corresponding to at least part of a printed substrate, said device comprising:

  • an optical sensor for imaging an area of the printed substrate containing printed content and for generating image data;

    a processor for determining interaction data using the image data, said interaction data identifying a page description corresponding to the printed substrate;

    a transceiver for;

    sending the interaction data to a computer system, thereby causing the computer system to identify the page description and retrieve display data corresponding to at least some of the printed content using the identified page description; and

    receiving the display data from the computer system; and

    an opaque touch-sensitive screen for displaying display information based on said display data, said opaque touch-sensitive screen enabling user interaction with the display information,wherein, from a user'"'"'s perspective, the opaque screen has real-time virtual transparency through the opaque screen to the printed content underlying said screen to provide a virtual window to the printed content underlying said screen.

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