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PORTABLE ELECTRONIC DEVICE, AND SYSTEM AND METHOD FOR TRACKING POSITIONS OF THE SAME

  • US 20100079337A1
  • Filed: 09/30/2008
  • Published: 04/01/2010
  • Est. Priority Date: 09/30/2008
  • Status: Abandoned Application
First Claim
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1. A position tracking system, comprising:

  • a portable electronic device, having a signal receiving module, a first communicating module, an active radio frequency identification (RFID) tag and a controlling module, the signal receiving module receiving a satellite positioning signal in a first region, the first communicating module emitting the satellite positioning signal, the active RFID tag emitting an identification (ID) code signal, and the controlling module enabling/disabling the signal receiving module and the active RFID tag;

    at least one RFID reader, being located in a second region for receiving the ID code signal emitted by the active RFID tag, and emitting an radio frequency (RF) positioning signal after receiving the ID code signal; and

    a remote monitoring server, comprising;

    a second communicating module, establishing a communicating connection with the first communicating module for receiving the satellite positioning signal emitted by the first communicating module and for receiving the RF positioning signal emitted by the RFID reader; and

    a position determining module, using the satellite positioning signal received by the second communicating module to determine whether the portable electronic device is far from the first region and close to the second region when the controlling module enables the signal receiving module;

    wherein the remote monitoring server sends a first command via the second communicating module to the first communicating module when the portable electronic device is close to the second region, and the controlling module enables the active RFID tag according to the first command received by the first communicating module.

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