Patents by Inventor Theresa Paulo

Theresa Paulo 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).

  • Digital pulse width modulated feedback system for a switching amplifier and method therefor
    Patent number: 7629840
    Abstract: A switching amplifier includes a power stage, a low pass filter, a combining circuit, and a feedback correction circuit. The power stage has an input terminal and an output terminal. The low pass filter has an input terminal coupled to the output terminal of the power stage, and an output terminal for providing a filtered pulse width modulated signal. The combining circuit has a first input terminal coupled to the output terminal of the power stage, a second input terminal coupled to the output terminal of the low pass filter, and an output terminal. The feedback correction circuit has a first input terminal for receiving a reference pulse width modulated signal, a second input terminal coupled to the output terminal of the combining circuit, and an output terminal coupled to the input terminal of the power stage.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: December 8, 2009
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Pallab Midya, Theresa Paulo, William J. Roeckner
  • Asynchronous Error Correction Circuit for Switching Amplifier
    Publication number: 20090261902
    Abstract: A circuit (104, 106) includes a comparison circuit (202, 504, 506, 602) and a correction circuit (204, 508, 510, 604). The comparison circuit provides a comparison signal (212, 524, 526, 612) in response to an error value (210, 520, 522, 610) and a reference value (214). The error value is based on a pulse modulated input signal (114) and a pulse modulated output signal (118). The correction circuit asynchronously provides a corrected pulse modulated signal (116) by selectively delaying and advancing an edge of the pulse modulated input signal based on the comparison signal. The pulse modulated output signal is based on the corrected pulse modulated signal.
    Type: Application
    Filed: April 17, 2008
    Publication date: October 22, 2009
    Applicant: Freescale Semiconductor, Inc.
    Inventors: Pallab Midya, Matthew R. Miller, Theresa Paulo, William J. Roeckner
  • DIGITAL PULSE WIDTH MODULATED FEEDBACK SYSTEM FOR A SWITCHING AMPLIFIER AND METHOD THEREFOR
    Publication number: 20090102549
    Abstract: A switching amplifier includes a power stage, a low pass filter, a combining circuit, and a feedback correction circuit. The power stage has an input terminal and an output terminal. The low pass filter has an input terminal coupled to the output terminal of the power stage, and an output terminal for providing a filtered pulse width modulated signal. The combining circuit has a first input terminal coupled to the output terminal of the power stage, a second input terminal coupled to the output terminal of the low pass filter, and an output terminal. The feedback correction circuit has a first input terminal for receiving a reference pulse width modulated signal, a second input terminal coupled to the output terminal of the combining circuit, and an output terminal coupled to the input terminal of the power stage.
    Type: Application
    Filed: October 22, 2007
    Publication date: April 23, 2009
    Inventors: Pallab Midya, Theresa Paulo, William J. Roeckner