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Visual signalling apparatus

  • US 4,365,238 A
  • Filed: 11/03/1980
  • Issued: 12/21/1982
  • Est. Priority Date: 06/08/1979
  • Status: Expired due to Term
First Claim
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1. A visual signalling apparatus for hearing impaired persons adapted for use in a building having illuminating means, a source of electrical power and electrical power conductors for supplying electrical power from said source to said illuminating means, said visual signalling apparatus comprising:

  • a plurality of means for sensing audible sounds resulting from the occurrence of a one of a plurality of predetermined events, each of said sensing means being associated with a different one of said predetermined sound producing events, each of said sensing means producing a distinct first output signal upon sensing said audible sounds resulting from the occurrence of said associated predetermined event;

    a central logic unit;

    means for transmitting said first output signal from said sensing means to said central logic unit; and

    means adapted to be connected to said illuminating means, for controlling the state of said illuminating means;

    said central logic unit including means for receiving said first output signal from said transmitting means and means for identifying which of said plurality of sensing means transmitted said first output signal;

    said central logic unit including means for transmitting a distinct second output signal to said controlling means for each of said first output signals received from said sensing means, said distinct second output signal specifying one of a plurality of predetermined sequences of changes of state, each preassigned to one of said plurality of predetermined events, of said illuminating means so as to indicate the occurrence of one of said predetermined events;

    said controlling means changing the state of said illuminating means according to said predetermined specific sequence in response to said second output signal from said central logic unit.

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