Patents by Inventor Douglas B. Bell

Douglas B. Bell 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).

  • Auditory display of knee joint vibration signals
    Patent number: 6537233
    Abstract: Computer-assisted auscultation of knee joints by auditory display of vibroarthrographic signals emitted during active movement of the leg include audification and sonification. In audification, the vibroarthrographic signals are scaled in time and frequency using a time-frequency distribution to facilitate aural analysis. In sonification, the instantaneous mean frequency and envelope of the vibroarthrographic signals are derived and used to synthesize sounds that may facilitate more accurate diagnosis than the original signals by improving their aural quality.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: March 25, 2003
    Assignee: University Technologies International Inc.
    Inventors: Rangaraj M. Rangayyan, Sridhar Krishnan, Douglas B. Bell, Cyril B. Frank