Patents by Inventor David T. Clapp

David T. Clapp 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).

  • Loopback processing method and apparatus
    Patent number: 7054338
    Abstract: A loopback processing method includes detecting a loopback at a first entity in a wide area network. The detection is accomplished by recognizing that a “memorized” frame has returned on the same communications interface within a given period of time. The time interval between sending the frame and detecting it returning at the same port may be recorded and sent to an operator to provide information on the relative location of the loopback in the network. A loopback detect sequence is sent from the first entity to a second entity on the communications interface in loopback. Because of the loopback, both entities receive the loopback detect sequence.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: May 30, 2006
    Assignee: Qualcomm Incorporated
    Inventors: Todd Sutton, Houtan Dehesh, Jan K. Wegrzyn, Roy G. Moss, Juan Faus, David T. Clapp
  • Loopback processing method and apparatus
    Patent number: 6826156
    Abstract: A loopback processing method includes detecting a loopback at a first entity in a wide area network. The detection is accomplished by recognizing that a “memorized” frame has returned on the same communications interface within a given period of time. The time interval between sending the frame and detecting it returning at the same port may be recorded and sent to an operator to provide information on the relative location of the loopback in the network. A loopback detect sequence is sent from the first entity to a second entity on the communications interface in loopback. Because of the loopback, both entities receive the loopback detect sequence. Either or both entities may inform a network operator of the loopback. The first entity has stopped using the link in loopback for real data, instead sending the loopback detect sequence. The second entity, upon detecting the loopback detect sequence, also stops using the link for real data.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: November 30, 2004
    Assignee: Qualcomm Incorporated
    Inventors: Todd Sutton, Houtan Dehesh, Jan K. Wegrzyn, Roy G. Moss, Juan Faus, David T. Clapp
  • Loopback processing method and apparatus
    Publication number: 20010038648
    Abstract: A loopback processing method includes detecting a loopback at a first entity in a wide area network. The detection is accomplished by recognizing that a “memorized” frame has returned on the same communications interface within a given period of time. The time interval between sending the frame and detecting it returning at the same port may be recorded and sent to an operator to provide information on the relative location of the loopback in the network. A loopback detect sequence is sent from the first entity to a second entity on the communications interface in loopback. Because of the loopback, both entities receive the loopback detect sequence.
    Type: Application
    Filed: February 8, 2001
    Publication date: November 8, 2001
    Inventors: Todd Sutton, Houtan Dehesh, Jan K. Wegrzyn, Roy G. Moss, Juan Faus, David T. Clapp