×

RFID LABEL TIME SYNCHRONIZATION

  • US 20090109041A1
  • Filed: 10/26/2007
  • Published: 04/30/2009
  • Est. Priority Date: 10/26/2007
  • Status: Active Grant
First Claim
Patent Images

1. A method comprising:

  • in a radio frequency identification (RFID) interrogator having an antenna, transceiver, a clock, a memory and a central processing unit (CPU), initializing a RFID tag with a label start time and a time to record data, the label start time representing an actual start time indicated by the clock;

    receiving a label stop time, a label time and logged data from an interrogation of the RFID tag; and

    compensating the label time for a drift between the label stop time and an actual stop time.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×