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RFID READERS SYSTEMS AND METHODS FOR EARLY HOPPING OUT OF A FREQUENCY CHANNEL IN THE PRESENCE OF RF INTERFERENCE

  • US 20070296603A1
  • Filed: 09/04/2007
  • Published: 12/27/2007
  • Est. Priority Date: 04/25/2006
  • Status: Active Grant
First Claim
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1. A Radio Frequency Identification (RFID) reader system for communicating with RFID tags using a plurality of communication channels, comprising:

  • an antenna; and

    an operational processing block coupled to the antenna and operable to;

    cause a first wireless signal to be transmitted via the antenna to the RFID tags, the first wireless signal having a frequency carrier in a first one of the channels;

    determine whether or not objectionable interference has been detected for communicating in the first channel; and

    cause a second signal to be transmitted to the RFID tags, the second signal having a frequency carrier in a second channel, and in which the second signal starts to be transmitted at a first hopping time if no objectionable interference has been detected, and at a second hopping time earlier than the first hopping time if objectionable interference has been detected.

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