×

System and method of reading RFID tags at high speeds

  • US 8,179,260 B2
  • Filed: 01/29/2009
  • Issued: 05/15/2012
  • Est. Priority Date: 01/29/2009
  • Status: Active Grant
First Claim
Patent Images

1. A method of processing a transponder signal received from a transponder to identify the transponder, the method comprising:

  • providing a first signal from the transponder signal, the first signal having a first and a second characteristics;

    providing a second signal that is different in phase with respect to the first signal, the second signal having a first and a second characteristics;

    generating a first transformed signal by altering the first characteristic of the first signal and retaining the second characteristic of the first signal to provide the first transformed signal;

    the first transformed signal comprising squaring a value of the first signal and retaining a sign of the first signal to provide the first transformed signal;

    generating a second transformed signal by altering the first characteristic of the second signal and retaining the second characteristic of the second signal to provide the second transformed signal;

    the second transformed signal comprising squaring a value of the second signal and retaining a sign of the second signal to provide the second transformed signal; and

    obtaining information incorporated in the transponder signal using a combination of the first transformed signal and the second transformed signal.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×