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Low vision panning and zooming device

  • US 6,731,326 B1
  • Filed: 03/31/2000
  • Issued: 05/04/2004
  • Est. Priority Date: 04/06/1999
  • Status: Expired due to Fees
First Claim
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1. A method of electronically enlarging a document with variable magnification and electronically panning said document and simultaneously allowing a user to write on said document comprising the steps of:

  • placing said document on a writing surface;

    mounting a long depth of field camera on a stand above said writing surface in alignment with said document to provide sufficient space to write on said document;

    generating a complete, in-focus image of said document from an output of said long depth of field camera;

    displaying said image on a display;

    providing a control device to electronically pan across said image and electronically vary said magnification of a portion of said image at different magnification levels.

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