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Vehicle security system having enhanced remote transmitter security

  • US 5,654,688 A
  • Filed: 04/14/1995
  • Issued: 08/05/1997
  • Est. Priority Date: 04/14/1995
  • Status: Expired due to Term
First Claim
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1. A security system for a vehicle comprising:

  • at least one vehicle sensor;

    alarm indicating means for indicating an alarm at the vehicle; and

    a controller switchable from an armed mode to a disarmed mode responsive to at least one coded remote transmitter, said controller in the armed mode being capable of generating an alarm responsive to said at least one vehicle sensor, said controller comprisingremote transmitter adding means for permitting addition of a coded remote transmitter capable of switching said controller to the disarmed mode, andremote transmitter verification means for generating a signal based upon a number of coded remote transmitters capable of switching said controller between the armed and disarmed modes.

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