Patents by Inventor Cindy Phan

Cindy Phan 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).

  • Isolating failing latches using a logic built-in self-test
    Patent number: 9057766
    Abstract: A mechanism is provided for identifying a failing latch within an integrated circuit device. A test sequence is initiated on a set of scan chains associated with an identified failing multiple input signature register. For each test portion in a set of test portions in the test sequence, a comparison is performed between an output of the multiple input signature register and a corresponding value in a set of expected values. Responsive to determining a match, a value of a counter is incremented. Responsive to a failure to match, incrementing of the counter is stopped, and the value of the counter providing an indication of the failing latch in the integrated circuit device is read out.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: June 16, 2015
    Assignee: International Business Machines Corporation
    Inventors: Ra'ed M. Al-omari, Michael W. Harper, Cindy Phan, Mack W. Riley
  • Isolating Failing Latches Using a Logic Built-In Self-Test
    Publication number: 20140149814
    Abstract: A mechanism is provided for identifying a failing latch within an integrated circuit device. A test sequence is initiated on a set of scan chains associated with an identified failing multiple input signature register. For each test portion in a set of test portions in the test sequence, a comparison is performed between an output of the multiple input signature register and a corresponding value in a set of expected values. Responsive to determining a match, a value of a counter is incremented. Responsive to a failure to match, incrementing of the counter is stopped, and the value of the counter providing an indication of the failing latch in the integrated circuit device is read out.
    Type: Application
    Filed: November 29, 2012
    Publication date: May 29, 2014
    Applicant: International Business Machines Corporation
    Inventors: Ra'ed M. Al-omari, Micheal W. Harper, Cindy Phan, Mack W. Riley