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GPS urban navigation system for the blind

  • US 6,502,032 B1
  • Filed: 06/25/2001
  • Issued: 12/31/2002
  • Est. Priority Date: 06/25/2001
  • Status: Expired due to Fees
First Claim
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1. A GPS navigation system for the visually impaired, which comprises:

  • a portable GPS receiver which receives GPS coordinates, wherein said portable GPS receiver further comprises a digital cellular telephone which provides a communication link;

    a computer which determines a pedestrian'"'"'s location from the GPS coordinates of the GPS receiver, wherein said computer comprises a survey-grade GPS raw data processor to obtain centimeter accuracy;

    a base server with detailed metropolitan navigation data which is accessible to the portable GPS receiver; and

    an active Braille display which produces tactile outputs of the pedestrian'"'"'s position, wherein said active Braille display produces a topographic three-dimensional map that the user feels on the display.

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