Patents by Inventor Russell C. Carroll

Russell C. Carroll 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).

  • Passive signal propagation delay calculations
    Patent number: 10784924
    Abstract: Systems and methods are described for calculating a propagation delay of a transmission line. A transmitter may transmit a signal from a first end of a transmission line to a second end of the transmission line at a first time, t1. A signal reflection device (e.g., a passive resonator) connected to the second end of the transmission line may generate a reflection at a second time, t2. A reflection detector (e.g., a matched, passive resonator) at the first end of the transmission line may receive the reflection from the signal reflection device, at a third time, t3. A propagation delay calculator may calculate the propagation delay of the transmission line as corresponding to one-half of a difference between the first time, t1, and the third time, t3.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: September 22, 2020
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventor: Russell C. Carroll
  • Passive Signal Propagation Delay Calculations
    Publication number: 20180306849
    Abstract: Systems and methods are described for calculating a propagation delay of a transmission line. A transmitter may transmit a signal from a first end of a transmission line to a second end of the transmission line at a first time, t1. A signal reflection device (e.g., a passive resonator) connected to the second end of the transmission line may generate a reflection at a second time, t2. A reflection detector (e.g., a matched, passive resonator) at the first end of the transmission line may receive the reflection from the signal reflection device, at a third time, t3. A propagation delay calculator may calculate the propagation delay of the transmission line as corresponding to one-half of a difference between the first time, t1, and the third time, t3.
    Type: Application
    Filed: April 21, 2017
    Publication date: October 25, 2018
    Inventor: Russell C. Carroll