Patents by Inventor Brad Darnell

Brad Darnell 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).

  • Delta modulator with pseudo constant modulation level
    Patent number: 5790062
    Abstract: The present invention is directed to delta modulation in which the modulation level is optimized to improve overall system performance. A delta modulator in accordance with the invention includes a step size controller having a overload detector, a step size generator and a modulation level regulator. The overload detector monitors the output serial bit stream and produces a signal indicative of whether overload conditions are present. The step size generator produces steps of varying sizes in response to an input signal. The modulation level regulator monitors the signal output from the overload detector and outputs a modulated signal when the overload detector output has reached at least a certain threshold level. The modulation level regulator output is received at the step size generator input.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: August 4, 1998
    Assignee: Wiltron Company
    Inventors: Brad Darnell, Rouben Toumani, Paul Bauer