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Method and apparatus for efficient use of communication channels for remote telemetry

  • US 6,940,421 B2
  • Filed: 12/05/2000
  • Issued: 09/06/2005
  • Est. Priority Date: 12/05/2000
  • Status: Expired due to Fees
First Claim
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1. A dual communication channel remote telemetry system comprising:

  • at least one central controller configured to generate at least one control message and to receive at least one reporting message, said at least one central controller further configured to access a subscriber telephone line for carrying said control message and to access said subscriber telephone line a for receiving said reporting message;

    a plurality of remote telemetry units configured to measure at least one local parameter and to generate at least one reporting message, each of said plurality of remote telemetry units having a unique identifier and having a receiver configured to receive said control message over said subscriber telephone line and a transceiver configured for communicating said reporting message to said at least one central controller over said subscriber telephone line;

    wherein said subscriber telephone line further comprises a broadcast communication channel; and

    wherein said transceiver associated with each of said remote telemetry units is configured with a shared telephone number on said subscriber telephone line.

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