Patents by Inventor Kent B. Chambers

Kent B. Chambers 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).

  • Overload protection and stability for high order 1-bit delta-sigma modulators
    Patent number: 6822594
    Abstract: A combination of low order and high order filters and a rule-based 1-bit quantizer with multiple feedback paths and separate quantization output provide stabilization to a delta-sigma modulator during quantizer overload conditions. The 1-bit delta-sigma modulator system combines the superior in-band noise shaping properties of a high order delta-sigma modulator with the stability of a low order delta-sigma modulator to obtain a high order delta-sigma modulator with overload stability. The 1-bit quantizer operates in accordance with a set of primary quantization rules that enables high and low order delta-sigma modulators to work together and remain stable during overload conditions while minimizing performance degradation.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: November 23, 2004
    Assignee: Cirrus Logic, Inc.
    Inventors: John L. Melanson, Kent B. Chambers