×

Micro-programmable security system

  • US 4,951,029 A
  • Filed: 02/16/1988
  • Issued: 08/21/1990
  • Est. Priority Date: 02/16/1988
  • Status: Expired due to Term
First Claim
Patent Images

1. In a security alarm network including a plurality of transducers, wherein each transducer communicates status data to a system controller of one of a plurality of subscriber systems and wherein each system controller communicates received transducer data to a central station, an improvement comprising:

  • (a) at least one system controller including means for detecting an incapacitated communications link of said at least one system controller to said central station and further including means for transmitting an inability-to-communicate (IC) alarm to at least one other of said plurality of system controllers; and

    (b) means coupled to at least one other of said plurality of system controllers responsive to a received IC alarm for communicating the identity of the incapacitated system controller to the central station.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×