Patents by Inventor Evan Logan Marchman

Evan Logan Marchman 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).

  • Circuit systems and methods for multirate digital-to-analog amplifier systems
    Patent number: 6462690
    Abstract: A multirate digital-to-analog amplifier system is disclosed. An interpolator is configured to interpolate digital values between samples of a digital signal from a digital signal source, in which the digital signal has a first sample rate. An output signal from the interpolator has a second, predetermined sample rate, which is independent of the first sample rate, of the digital signal. An amplifier is configured to amplify a digital signal having the second sample rate in response to the output signal of the interpolator.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: October 8, 2002
    Assignee: Cirrus Logic, Inc.
    Inventors: Johann Guy Gaboriau, Xiaofan Fei, Evan Logan Marchman, Jason Powell Rhode