Patents by Inventor Darrell Halterman

Darrell Halterman 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).

  • METHOD AND APPARATUS FOR MAINTAINING NETWORK COMMUNICATION DURING MAINTENANCE
    Publication number: 20130124761
    Abstract: A communication method for use by an input/output (I/O) scanner coupled to a programmable logic controller (PLC) includes coupling at least one I/O module to a backplane, and coupling a maintenance module to the backplane. The communication method also includes selectively enabling and disabling communication between the backplane and the at least one I/O module by actuating a switch in the maintenance module such that network communication is maintained by a network interface regardless of whether communication between the backplane and the at least one I/O module is enabled.
    Type: Application
    Filed: February 8, 2010
    Publication date: May 16, 2013
    Inventors: David Elliott, Yu Zhang, Darrell Halterman, Li Xu, Weihua Shang, Haifeng Wang