Patents by Inventor Hyuk-Jong Yi

Hyuk-Jong Yi 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).

  • Patent number: 8670970
    Abstract: In one embodiment of the present invention, the performance of an electronic circuit having a clock path between a clock source cell and a clock leaf cell is characterized over a simulation duration, where the clock path has one or more intermediate cells. Variations in the effective power supply voltage level of at least one intermediate cell over the simulation duration are determined using a system-level power-grid simulation tool. Static timing analysis (STA) software is used to determine cell delays for at least one of the intermediate cells for different clock-signal transitions at different times during the simulation duration. The cell delays are then used to generate one or more metrics characterizing the performance of the electronic circuit, such as maximum and minimum pulse widths, maximum cycle-to-cycle jitter, and maximum periodic jitter.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: March 11, 2014
    Assignee: Agere Systems LLC
    Inventor: Hyuk-Jong Yi
  • Patent number: 8516424
    Abstract: A system for, and method of, performing static timing analysis. In one embodiment, the system includes: (1) a CVS tool configured to determine a cell-based voltage supply corresponding to each of a plurality of cells in an integrated circuit design and (2) an STA tool configured to derate the each of the cells based on the corresponding cell-based voltage supply.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: August 20, 2013
    Assignee: LSI Corporation
    Inventors: Alexander Tetelbaum, Hyuk-Jong Yi
  • Publication number: 20130080986
    Abstract: A system for, and method of, performing static timing analysis. In one embodiment, the system includes: (1) a CVS tool configured to determine a cell-based voltage supply corresponding to each of a plurality of cells in an integrated circuit design and (2) an STA tool configured to derate the each of the cells based on the corresponding cell-based voltage supply.
    Type: Application
    Filed: September 27, 2011
    Publication date: March 28, 2013
    Applicant: LSI Corporation
    Inventors: Alexander Tetelbaum, Hyuk-Jong Yi
  • Publication number: 20120278056
    Abstract: In one embodiment of the present invention, the performance of an electronic circuit having a clock path between a clock source cell and a clock leaf cell is characterized over a simulation duration, where the clock path has one or more intermediate cells. Variations in the effective power supply voltage level of at least one intermediate cell over the simulation duration are determined using a system-level power-grid simulation tool. Static timing analysis (STA) software is used to determine cell delays for at least one of the intermediate cells for different clock-signal transitions at different times during the simulation duration. The cell delays are then used to generate one or more metrics characterizing the performance of the electronic circuit, such as maximum and minimum pulse widths, maximum cycle-to-cycle jitter, and maximum periodic jitter.
    Type: Application
    Filed: July 16, 2012
    Publication date: November 1, 2012
    Applicant: AGERE SYSTEMS INC.
    Inventor: Hyuk-Jong Yi
  • Patent number: 8255199
    Abstract: In one embodiment of the present invention, the performance of an electronic circuit having a clock path between a clock source cell and a clock leaf cell is characterized over a simulation duration, where the clock path has one or more intermediate cells. Variations in the effective power supply voltage level least one intermediate cell over the simulation duration are determined using a system-level power-grid simulation tool. Static timing analysis (STA) software is used to determine cell delays for at least one of the intermediate cells for different clock-signal transitions at different times during the simulation duration. The cell delays are then used to generate one or more metrics characterizing the performance of the electronic circuit, such as maximum and minimum pulse widths, maximum cycle-to-cycle jitter, and maximum periodic jitter.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: August 28, 2012
    Assignee: Agere Systems Inc.
    Inventor: Hyuk-Jong Yi
  • Publication number: 20090287462
    Abstract: In one embodiment of the present invention, the performance of an electronic circuit having a clock path between a clock source cell and a clock leaf cell is characterized over a simulation duration, where the clock path has one or more intermediate cells. Variations in the effective power supply voltage level at at least one intermediate cell over the simulation duration are determined using a system-level power-grid simulation tool. Static timing analysis (STA) software is used to determine cell delays for at least one of the intermediate cells for different clock-signal transitions at different times during the simulation duration. The cell delays are then used to generate one or more metrics characterizing the performance of the electronic circuit, such as maximum and minimum pulse widths, maximum cycle-to-cycle jitter, and maximum periodic jitter.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 19, 2009
    Applicant: AGERE SYSTEMS INC.
    Inventor: Hyuk-Jong Yi