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Tracking system with mobile reader

  • US 10,634,761 B2
  • Filed: 12/12/2014
  • Issued: 04/28/2020
  • Est. Priority Date: 12/13/2013
  • Status: Active Grant
First Claim
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1. A tracking system comprising:

  • a mobile reader adapted to be handheld or worn by an individual who holds or wears the mobile reader to scan a data source in order to read therefrom item data associated with an item, the mobile reader having a radio-frequency (RF) transmitter that wirelessly transmits the item data in an RF signal;

    a radio receiver network including at least two receiver antennae that receive the RF signal transmitted by the mobile reader;

    a comparator circuit coupled to the radio receiver network and configured to determine a timing difference between the RF signal received by one of the at least two receiver antennae and the RF signal received by another of the at least two receiver antennae; and

    a central processing unit in communication with the comparator circuit to acquire the timing difference, the central processing unit being configured to calculate based on the timing difference a physical location at which the mobile reader scanned the data source in order to read the item data, to identify the item based on the item data transmitted from the mobile reader, and to associate the identified item with the calculated physical location at which the mobile reader scanned the data source in order to read the item data.

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