Patents by Inventor Zhan-Zhong Yao

Zhan-Zhong Yao 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).

  • Method and system performing RC extraction
    Patent number: 8312406
    Abstract: A method, system, and computer program product are disclosed for performing RC extraction. The present approach can consider multiple types of manufacturing processes, and allows location-based prediction data to be used in the context of net-based analysis. RC extraction can be more accurately performed based upon net-specific top and bottom adjustments to thickness prediction that are location-based. The net-based prediction data can be used for other purposes as well, such as to perform electrical hotspot analysis, to visually display physical properties of the nets, or allow queries for other data analysis purposes.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: November 13, 2012
    Assignee: Cadence Design Systems, Inc.
    Inventors: Li J. Song, Taber Smith, Hao Jl, Zhan-Zhong Yao
  • Method and system performing block-level RC extraction
    Patent number: 8219944
    Abstract: A method, system, and computer program product are disclosed for performing RC extraction from the perspective of the block level. A translation mechanism is employed to convert from a full-chip design domain to a block-level design domain. This allows model-based prediction results to be used in the early design implementation flow when parasitic RC and timing extractions are performed, where the model-based prediction results relate to predictions of manufacturing variations such as thickness and topography.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: July 10, 2012
    Assignee: Cadence Design Systems, Inc.
    Inventors: Li J. Song, Zhan-Zhong Yao, Rachid Salik, Hao Ji, Taber Smith
  • METHOD AND SYSTEM PERFORMING RC EXTRACTION
    Publication number: 20100325595
    Abstract: A method, system, and computer program product are disclosed for performing RC extraction. The present approach can consider multiple types of manufacturing processes, and allows location-based prediction data to be used in the context of net-based analysis. RC extraction can be more accurately performed based upon net-specific top and bottom adjustments to thickness prediction that are location-based. The net-based prediction data can be used for other purposes as well, such as to perform electrical hotspot analysis, to visually display physical properties of the nets, or allow queries for other data analysis purposes.
    Type: Application
    Filed: June 22, 2009
    Publication date: December 23, 2010
    Applicant: Cadence Design Systems, Inc.
    Inventors: Li J. SONG, Taber SMITH, Hao JI, Zhan-Zhong YAO
  • METHOD AND SYSTEM PERFORMING BLOCK-LEVEL RC EXTRACTION
    Publication number: 20100162188
    Abstract: A method, system, and computer program product are disclosed for performing RC extraction from the perspective of the block level. A translation mechanism is employed to convert from a full-chip design domain to a block-level design domain. This allows model-based prediction results to be used in the early design implementation flow when parasitic RC and timing extractions are performed, where the model-based prediction results relate to predictions of manufacturing variations such as thickness and topography.
    Type: Application
    Filed: June 23, 2009
    Publication date: June 24, 2010
    Applicant: Cadence Design Systems, Inc.
    Inventors: Li J. SONG, Zhan-Zhong Yao, Rachid Salik, Hao Jl, Taber Smith