System and method of tracking short range transmitters
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United States of America Patent
Stats
-
May 22, 2001
Grant Date -
N/A
app pub date -
Sep 17, 1996
filing date -
Sep 17, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system and method of locating a wireless device in a transaction establishment which relies on signal strength measurements and the known positions of receiving antennae. The system includes a number of transceivers each including a transmitter which transmits a first signal to the wireless device, a plurality of receivers including a plurality of antennae located throughout the transaction establishment and at least one signal strength determining circuit for determining signal strengths of second signals received by the antennae, and a control circuit for controlling transmission of the first signal and reception of the second signals. A storage medium contains the locations for each of the antennae. A computer coupled to the control circuit instructs the control circuit to transmit the first signal and determines a location of the wireless device in the transaction establishment from the signal strengths and from the locations of the antennae. Multiple locations of a wireless device may be tracked and analyzed to yield customer shopping patterns.
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