Patents by Inventor Hanwoo C. Cho

Hanwoo C. Cho 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).

  • Programmable delay module testing device and methods thereof
    Patent number: 8274272
    Abstract: A data processing device is configured so that, in a test mode of operation, the phase of an output signal of a second programmable delay module (PDM) is based on the phase of the input signal of the first PDM. To test the first and second PDMs, the output signal of the first PDM is set to each of a first set of phases and the corresponding phase of the output signal of the second PDM is compared to determine whether the performance of the first and second PDMs match a specification. Accordingly, the first and second PDMs are qualified based on their relative performance, reducing the need for test structures that consume an undesirably large amount of area.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: September 25, 2012
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Gerald R. Talbot, Hanwoo C. Cho, Brian Amick
  • PROGRAMABLE DELAY MODULE TESTING DEVICE AND METHODS THEREOF
    Publication number: 20100201343
    Abstract: A data processing device is configured so that, in a test mode of operation, the phase of an output signal of a second programmable delay module (PDM) is based on the phase of the input signal of the first PDM. To test the first and second PDMs, the output signal of the first PDM is set to each of a first set of phases and the corresponding phase of the output signal of the second PDM is compared to determine whether the performance of the first and second PDMs match a specification. Accordingly, the first and second PDMs are qualified based on their relative performance, reducing the need for test structures that consume an undesirably large amount of area.
    Type: Application
    Filed: February 6, 2009
    Publication date: August 12, 2010
    Applicant: ADVANCED MICRO DEVICES, INC.
    Inventors: Gerald R. Talbot, Hanwoo C. Cho, Brian Amick