Patents by Inventor Michael Todd Smiley

Michael Todd Smiley 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).

  • Audio frequency recovery—DC restorer circuit for cordless phone applications
    Patent number: 6249552
    Abstract: An audio frequency recovery—DC restorer circuit after demodulation that includes an operational amplifier, a diode, a capacitor and resistor circuitry arranged to supply a reference voltage signal Vref to the operational amplifier. The operational amplifier is also coupled with a demodulated audio frequency baseband signal via the capacitor. The demodulated audio frequency baseband signal is in a filtered condition free of high frequency noise that may otherwise affect quality and having an average voltage Vavg at a level.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: June 19, 2001
    Assignee: Nortel Networks Limited
    Inventors: John-Paul Pizaña Caña, Michael Todd Smiley