Patents by Inventor Chinwuba Ezekwe

Chinwuba Ezekwe 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).

  • System and method for removing nonlinearities and cancelling offset errors in comparator based/zero crossing based switched capacitor circuits
    Patent number: 7936291
    Abstract: A method compensates for errors in an output signal of a comparator based/zero crossing based circuit. The method includes generating with a comparator based/zero crossing based switched capacitor circuit a first output signal with an input signal, generating with the comparator based/zero crossing based switched capacitor circuit a second output signal with the input signal of an opposite polarity, and subtracting the second output signal from the first output signal to generate a final output signal for the comparator based/zero crossing based switched capacitor circuit.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: May 3, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Robert Wolf, Christoph Lang, Xinyu Xing, Sam Kavusi, Chinwuba Ezekwe
  • INTEGRATED SENSOR ARRAY WITH OFFSET REDUCTION
    Publication number: 20100145657
    Abstract: A method and system for providing increased accuracy in a CMOS sensor system in one embodiment includes a plurality of sensor elements having a first terminal and a second terminal on a complementary metal oxide semiconductor substrate, a first plurality of switches configured to selectively connect the first terminal to a power source and to selectively connect the first terminal to a readout circuit, and a second plurality of switches configured to selectively connect the second terminal to the power source and to selectively connect the second terminal to the readout circuit.
    Type: Application
    Filed: December 8, 2008
    Publication date: June 10, 2010
    Applicant: Robert Bosch GmbH
    Inventors: Sam Kavusi, Christoph Lang, Thomas Rocznik, Chinwuba Ezekwe
  • System And Method For Removing Nonlinearities And Cancelling Offset Errors In Comparator Based/Zero Crossing Based Switched Capacitor Circuits
    Publication number: 20100090724
    Abstract: A method compensates for errors in an output signal of a comparator based/zero crossing based circuit. The method includes generating with a comparator based/zero crossing based switched capacitor circuit a first output signal with an input signal, generating with the comparator based/zero crossing based switched capacitor circuit a second output signal with the input signal of an opposite polarity, and subtracting the second output signal from the first output signal to generate a final output signal for the comparator based/zero crossing based switched capacitor circuit.
    Type: Application
    Filed: October 10, 2008
    Publication date: April 15, 2010
    Applicant: ROBERT BOSCH GMBH
    Inventors: Robert Wolf, Christoph Lang, Xinyu Xing, Sam Kavusi, Chinwuba Ezekwe