Patents by Inventor Paul C. Liu

Paul C. Liu 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).

  • Scalable pattern matching between a pattern clip and a pattern library
    Patent number: 8718382
    Abstract: A two-level matching technique is described. A system can generate a set of index patterns based on a set of library patterns in a pattern library. The pattern library can include patterns that are expected to have problems during manufacturing. Next, the system can use a fast matching process to check if a first-level pattern clip potentially matches one or more index patterns from the set of index patterns. If so, the system can use a detailed matching process to match a second-level pattern clip with library patterns that correspond to the one or more index patterns. Otherwise, the system can report that the first-level pattern clip does not match any library pattern in the pattern library.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: May 6, 2014
    Assignee: Synopsys, Inc.
    Inventors: Weiping Fang, Jun Zhu, Paul C. Liu, Yuli Xue, Ke Fan
  • SCALABLE PATTERN MATCHING BETWEEN A PATTERN CLIP AND A PATTERN LIBRARY
    Publication number: 20130195368
    Abstract: A two-level matching technique is described. A system can generate a set of index patterns based on a set of library patterns in a pattern library. The pattern library can include patterns that are expected to have problems during manufacturing. Next, the system can use a fast matching process to check if a first-level pattern clip potentially matches one or more index patterns from the set of index patterns. If so, the system can use a detailed matching process to match a second-level pattern clip with library patterns that correspond to the one or more index patterns. Otherwise, the system can report that the first-level pattern clip does not match any library pattern in the pattern library.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 1, 2013
    Applicant: SYNOPSYS, INC.
    Inventors: Weiping Fang, Jun Zhu, Paul C. Liu, Yuli Xue, Ke Fan