Patents by Inventor Ernest P. Moore

Ernest P. Moore 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).

  • Automatic telephone loaded/nonloaded facility type identification circuit
    Patent number: 4368362
    Abstract: A bidirectional transmission path is typically coupled to unidirectional receive and transmit paths to effect amplification in repeaters or the like. A determination of whether the bidirectional path includes either loaded or nonloaded type 2-wire cable is made by inserting a test signal having a predetermined frequency and a predetermined amplitude into the receive path and measuring the peak amplitude of a transmit signal developed on the transmit path. If the transmit signal peak amplitude is greater than a predetermined threshold value, the 2-wire cable is considered loaded type, and if the transmit signal peak amplitude is less than the threshold value, the 2-wire cable is considered nonloaded type.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: January 11, 1983
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Li-Jin W. Chung, Ernest P. Moore, Glendon R. Porter, Joseph F. Rizzo
  • Automatically adjustable bidirectional-to-unidirectional transmission network
    Patent number: 4368361
    Abstract: "Transhybrid" loss is maximized in a transmission network of the active canceler type employed to couple receive and transmit unidirectional transmission paths to a bidirectional transmission path including 2-wire loaded type cable by controllably adjusting impedance elements of the canceler circuit in a prescribed sequence including adjustment of a network build out capacitor to obtain amplitude nulls of signals detected on the transmit path while supplying individual ones of a plurality of test signals to the receive path. The test signals include first and second signals having a plurality of equally spaced frequency components in first and second frequency bands, respectively, and a third signal having a predetermined single frequency.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: January 11, 1983
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Li-Jin W. Chung, Ernest P. Moore, Glendon R. Porter, Joseph F. Rizzo
  • Automatically adjustable bidirectional-to-unidirectional transmission network
    Patent number: 4365119
    Abstract: "Transhybrid" loss is maximized in a transmission network of the active canceler type employed to couple receive and transmit unidirectional transmission paths to a bidirectional transmission path including 2-wire nonloaded type cable by controllably adjusting impedance elements of the canceler circuit in a prescribed sequence to obtain amplitude nulls of signals detected on the transmit path while supplying individual ones of a plurality of single frequency test signals to the receive path. The adjustment sequence comprises a first procedure including a plurality of iterative adjustments of predetermined impedance elements in predetermined groups until no changes in the impedance settings occur and multiple iterative adjustment of predetermined groups until no changes in the impedance settings occur.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: December 21, 1982
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Li-Jin W. Chung, Ernest P. Moore, Glendon R. Porter, Joseph F. Rizzo