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Randomization of transmit time

  • US 6,297,734 B1
  • Filed: 09/23/1999
  • Issued: 10/02/2001
  • Est. Priority Date: 09/23/1999
  • Status: Expired due to Term
First Claim
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1. A method of producing a psuedo-random RF signal in a tag for use in a multiple tag monitoring system, each of said tags including at least one on-board environmental sensor, an on-board psuedo-random transmit time calculation circuit and an on-board RF-transmitter, said method comprising the steps of:

  • a) monitoring environmental conditions of a tag through the on-board sensor;

    b) calculating a psuedo-random transmit time based upon monitored environmental conditions through the on-board calculation circuit; and

    c) transmitting a signal at the calculated psuedo-random transmit time through the on-board RF transmitter.

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