Supervised anti-theft security system for product displays

  • US 6,104,289 A
  • Filed: 06/10/1999
  • Issued: 08/15/2000
  • Est. Priority Date: 06/10/1999
  • Status: Expired due to Term
First Claim
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1. An computer-controlled anti-theft security system for product displays comprising:

  • a command module having a front panel, a back panel, power supply means for providing power to the system, a sensor satellite connection receptacle and a programmable device, said programmable device including;

    (a) a command module micro-processor electrically coupled to said power supply means and said satellite connection receptacle;

    (b) a keypad electrically coupled to said command module micro-processor and disposed on said front panel of said command module, to generate user selected operating instructions to said command module micro-processor, the instructions configuring the anti theft security system to operate in a predetermined configuration;

    at least one sensor satellite coupled to the satellite receptacle of said command module, said at least one sensor satellite having a satellite input port, a satellite output port, a plurality of sensor connection jacks, and a plurality of status indicators, wherein said satellite input port and said satellite output port connect additional sensor satellites;

    a satellite micro-processor electrically coupled to said satellite input port, said satellite output port, said plurality of sensor connection jacks and said plurality of status indicators; and

    at least one sensor adapted to be attached to a displayed product and having a four sensor wires for electrically coupling said sensor to one of said plurality of sensor connection jacks, said sensor comprising;

    (a) a bi-color LED coupled in parallel with a series connection of a resistor and a diode via two of said sensor wires;

    (b) a switch coupled in series with a blocking diode via said other two sensor wires; and

    (c) a pullup resistor connected in parallel with one of said sensor wires connected to the LED and both of said other two sensor wires,so that when the sensor is connected to the command module via the sensor satellite, the command module detects the presence of said sensor and wherein when said switch is closed, said LED indicates a secured state and wherein cutting or short circuiting said wires or opening said switch causes said LED to indicate an unsecure state.

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