Patents Assigned to Lucent Technoilogies Inc.
  • Patent number: 6075442
    Abstract: The low power child locator system consists of a lightweight, low power radio frequency transmitter beacon worn by the child and a radio frequency directional receiver that can be used to direct the user to the radio frequency beacon transmitter. The transmitter can be programmed to generate a unique signal to prevent its output radio signal from being received by another receiver. The transmitter-receiver pair therefore communicates to the exclusion of other transmitters and receivers that are operational in the vicinity of the transmitter-receiver pair. Since the child is assumed to not have traveled a great distance from their original location, the radio frequency directional receiver operates as a simple signal strength indicator, using a plurality of narrow beam antennas to enable the user to vector in on the transmitted signal.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: June 13, 2000
    Assignee: Lucent Technoilogies Inc.
    Inventor: Bryan J. Welch