Patents by Inventor Edwin J. Hilpert

Edwin J. Hilpert 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 maximizing efficiency in satellite communications
    Patent number: 4593399
    Abstract: In a data communication system involving modems transmitting over a link including terrestrial and one or more satellite links, a nontransmitting modem sends a secondary channel tone during the absence of data transmission. The cessation of said tone is detected by the other modem and used to de-squelch the remote modem receiver. In this manner, the receiver is protected from echoes impinging upon it during long transmission delay times. This method optimizes data throughput by adapting to the transmission delay of the circuit.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: June 3, 1986
    Assignee: Racal Data Communications Inc.
    Inventors: Charles R. Baugh, Edwin J. Hilpert, George R. Kushin, Yoon B. Park, William A. Dambrackas