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Touch screen for the vision-impaired

  • US 6,384,743 B1
  • Filed: 06/14/1999
  • Issued: 05/07/2002
  • Est. Priority Date: 06/14/1999
  • Status: Expired due to Term
First Claim
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1. A touch screen for the vision-impaired comprising:

  • (1) an electronic display screen having a display area;

    (2) a touch panel commensurate with the display area and providing a coordinate output indicating a touch point in the display area;

    (3) an electronic computer communicating with the electronic display screen, the touch panel and executing a stored program to;

    (a) display a plurality of first virtual buttons on the display screen having arbitrary locations within the display area;

    (b) respond to a touching of one of the plurality of first virtual buttons to execute a subroutine associated with the touched virtual button;

    (c) generating a plurality of second virtual buttons having a one-to-one correspondence with the first plurality of virtual buttons but arranged on the display screen in a linear array; and

    (d) respond to a touching of a given one of the plurality of second virtual buttons to execute a subroutine associated with a first virtual button corresponding to the given second virtual button.

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