Patents by Inventor Donald J. Wemple

Donald J. Wemple 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).

  • Errorless line protection switching in asynchronous transer mode (ATM) communications systems
    Patent number: 5285441
    Abstract: An errorless line protection apparatus involves receipt of data from an active line and a standby line. A determination is made as to whether the data from the active line leads or lags the data on the standby line. A switching system directs the leading data to a lead channel containing a controllable amount of time delay up to the maximum amount that the leading data is expected to led the lagging data. Lagging data is directed to a lag channel. A selected one of the data from the lead channel or the lag channel is delivered to an output line.
    Type: Grant
    Filed: March 17, 1992
    Date of Patent: February 8, 1994
    Assignee: AT&T Bell Laboratories
    Inventors: Narendra K. Bansal, Sid Chaudhuri, Shahrukh S. Merchant, Donald J. Wemple