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Talking display signage

  • US 5,485,139 A
  • Filed: 03/28/1995
  • Issued: 01/16/1996
  • Est. Priority Date: 09/30/1993
  • Status: Expired due to Fees
First Claim
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1. A system for presenting automatic verbal announcements comprising:

  • a modulated infrared signal generator for generating a modulated signal of given frequency at a target when the target is within a sensing range;

    a detector for detecting a modulated infrared signal of the given frequency after is it reflected from a target within the sensing range;

    a digital voice recorder/playback means for recording an announcement and subsequently providing said announcement when a target is within the sensing range;

    speaker means to provide an audible output in response to the announcement received from said digital voice recorder/playback means; and

    ,a microprocessor operatively connected to said generator to periodically output a modulated signal from said generator to said detector, said microprocessor being operatively connected to said digital voice recorder/playback means for initiating an announcement when a reflected signal of the given frequency is received at said detector.

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