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Infra-red security system

  • US 4,751,396 A
  • Filed: 01/20/1987
  • Issued: 06/14/1988
  • Est. Priority Date: 03/10/1986
  • Status: Expired due to Fees
First Claim
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1. An electronic security system, comprising:

  • (a) an infrared (IR) transmitter operable to broadcast a digital identification code signal at a pre-selectable baud rate;

    (b) an IR receiver responsive to said identification code signal received at said baud rate;

    (c) an enclosure for said receiver, said enclosure being both IR transparent and visible light opaque on its external surface and IR reflective on its internal surface;

    (d) comparator means in said receiver to compare received IR digital coded signals, and the baud rates thereof, with digital code and baud rate reference means; and

    (e) means operably coupled to said comparator means for enabling an actuation to occur when said reference means match the transmitted IR digital code and baud rate whereby, enhanced reliability and range, and omnidirectionality, is obtained through the use of said enclosure for said receiver/transmitter;

    (f) an enclosure for said transmitter, said enclosure being both IR transparant and visible light opaque on its external surface, and IR reflective on its internal surface.

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