Patents by Inventor Andrew Edward Spencer

Andrew Edward Spencer 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).

  • Apparatus and method for sharing data among a plurality of control devices on a communications network
    Patent number: 6169928
    Abstract: A networked system is provided for connecting a plurality of programmable logic controllers together in a manner which more efficiently uses available network bandwidth. The network includes a producer controller and at least one consumer controller. The producer controller shares a portion of its internal memory with other consumer controllers on the network. In this manner, a data sample is sent from the producer controller to one or more consumer controllers. The consumer controllers check to determine if data samples are lost during transmission over the network and initiate responsive corrective action.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: January 2, 2001
    Assignee: GE Fanuc Automation North America, Inc.
    Inventors: Ronald Wayne Olson, Anthony Joseph Cinalli, Andrew Edward Spencer