Patents by Inventor James D. Collier

James D. Collier 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).

  • Patent number: 6606572
    Abstract: In a circuit arrangement for deriving the measured variable from the signals (S1 to S2) of at least two sensors (23, 24) of a flow meter, which flow meter comprises one or several parallel fluid lines (20, 21) and means (22) for exciting oscillations of a predetermined fundamental frequency (&ohgr;) in the fluid line(s), the sensors (23, 24) detect the oscillations and the sensor signals (S1 to S2) are supplied by way of a respective A-D converter (36; 37) to a digital processing unit (P) having a computation circuit (46), in which their phase difference (&PHgr;) is determined as a measure of the flow.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: August 12, 2003
    Assignee: Danfoss A/S
    Inventors: Henning Max Hansen, Frands Wulff Voss, Niels Per Mondrup, Karsten Westermann, Hans Jørgen Moos, James D. Collier, Roger F. Sewell, Richard-Jan E. Jansen
  • Publication number: 20030033096
    Abstract: In a circuit arrangement for deriving the measured variable from the signals (S1 to S2) of at least two sensors (23, 24) of a flow meter, which flow meter comprises one or several parallel fluid lines (20, 21) and means (22) for exciting oscillations of a predetermined fundamental frequency (&OHgr;) in the fluid line(s), the sensors (23, 24) detect the oscillations and the sensor signals (S1 to S2) are supplied by way of a respective A-D converter (36; 37) to a digital processing unit (P) having a computation circuit (46), in which their phase difference (&phgr;) is determined as a measure of the flow.
    Type: Application
    Filed: May 28, 2002
    Publication date: February 13, 2003
    Inventors: Henning Max Hansen, Frands Wulff Voss, Niels Per Mondrup, Karsten Westermann, Hans Jorgen Moos, James D. Collier, Roger F. Sewell, Richard-Jan E. Jansen
  • Patent number: 6370190
    Abstract: A decision feedback encoder comprising an analog-to-digital converter for converting an input signal into digital signals representing decision levels, digital processing circuits responsive to signals from the converter for providing a succession of symbol values and a set of coefficients, digital-to-analog converters for converting the coefficients into corresponding analog values and analog circuits for forming a sum of the products of each of the symbol values and a respective one of said analog values to provide a feedback signal for the reduction of inter-symbol interference in the input signal.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: April 9, 2002
    Assignee: 3Com Technologies
    Inventors: Robert W. Young, James D. Collier