Patents by Inventor Thomas E. Barclay

Thomas E. Barclay 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).

  • Multinodal data communication network
    Patent number: 4568930
    Abstract: A multinodal data communication network permits the sharing of remote resources by a wide variety of computing devices. Data or messages generated at one device may be sent to any or all the other devices sharing a common transmission medium. Message handling capability of the network is increased by the use of a plurality of transmission media connected to the computing devices through interface stages. Both priority message transmission and improved acknowledgement protocols are implemented.
    Type: Grant
    Filed: January 21, 1983
    Date of Patent: February 4, 1986
    Assignee: E-Systems, Inc.
    Inventors: William D. Livingston, Wayne A. Mack, Thomas E. Barclay, John A. Zett, Eugene E. Jacob
  • Variable threshold receiver
    Patent number: 4516248
    Abstract: A variable threshold receiver is disclosed which compensates for direct current (dc) voltages present in a received signal. The receiver utilizes an integrator-comparator circuit to recover data which may have been distorted by the presence of dc voltages. The integrator-comparator circuit provides data recovery by tracking the average of the peak signal levels of the received signal, eliminating the need for a lengthy preamble to compensate for receiver attack time.
    Type: Grant
    Filed: January 21, 1983
    Date of Patent: May 7, 1985
    Assignee: E-Systems, Inc.
    Inventors: Thomas E. Barclay, John A. Zett