Patents by Inventor Adrian Witherspoon

Adrian Witherspoon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Automatic data collection device, method and article for avoiding interference
    Publication number: 20070063818
    Abstract: A radio-frequency identification system comprises a radio-frequency identification tag and an interrogator. In one embodiment, the interrogator is configured to determine a nature of a received signal in a frequency channel and to selectively enable transmission of an interrogation signal in the frequency channel based on the determined nature of the received signal. In another embodiment, the interrogator is configured to select an interrogation frequency channel based on whether interference is likely to occur due to signals in the selected channel and/or signals in adjacent frequency channels.
    Type: Application
    Filed: December 23, 2005
    Publication date: March 22, 2007
    Applicant: Intermec IP Corp.
    Inventors: Adrian Witherspoon, Rene Martinez