Patents by Inventor Vanessa H-C Chen

Vanessa H-C Chen 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).

  • Analog to digital converter with digital reference voltage signal
    Patent number: 9602120
    Abstract: An analog to digital converter contain a plurality of comparators, each having a plurality of positive input voltage transistors and a plurality of negative input voltage transistors. Each positive input transistor is in communication with a positive input voltage, and each negative input transistor is in communication with a negative input voltage. Each comparator is configured to adjust a positive reference voltage and a negative reference voltage used to generate a binary comparator output for each comparator indicating a result of a comparison between a voltage differential defined by the positive input voltage and the negative input voltage and a unique voltage range indicated by a unique digital reference signal communicated to each comparator.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: March 21, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Jean-Olivier Plouchart, Vanessa H-C Chen