Patents by Inventor Tuay-Ling Kathy Lang

Tuay-Ling Kathy Lang 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: 10176276
    Abstract: An apparatus and method for determining an optimal global quantum value for use in event-driven simulations of a device are disclosed herein. The device is simulated using information representative of a device design corresponding to the device, the simulation of the device comprising an event-driven simulation using a provisional global quantum value. Events included in a sequence chart corresponding to the simulation using the provisional global quantum value are compared against expected events. Based on the comparison detecting at least one of the expected events being absent in the sequence chart, providing the optimal global quantum value as being smaller than the provisional global quantum value. Based on the comparison detecting no difference between the events in the sequence chart and the expected events, providing the optimal global quantum value as being larger than the provisional global quantum value.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: January 8, 2019
    Assignee: Cadence Design Systems, Inc.
    Inventors: Qizhang Chao, Neeti K. Bhatnagar, George F. Frazier, Tuay-Ling Kathy Lang, Andrew Wilmot
  • Patent number: 8838430
    Abstract: An apparatus and method for detecting memory access violations in simulations is disclosed herein. A detection tool is designed to automatically perform a violation check for each memory read or write operation simulated in a modeled system. The detection tool is capable of handling a modeled system including one or more memories and/or one or more processors.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: September 16, 2014
    Assignee: Cadence Design Systems, Inc.
    Inventors: Tuay-Ling Kathy Lang, Neeti K. Bhatnagar, Jai Bharat Patel Gulabeela, George F. Frazier, Qizhang Chao
  • Publication number: 20140067358
    Abstract: An apparatus and method for determining an optimal global quantum value for use in event-driven simulations of a device are disclosed herein. The device is simulated using information representative of a device design corresponding to the device, the simulation of the device comprising an event-driven simulation using a provisional global quantum value. Events included in a sequence chart corresponding to the simulation using the provisional global quantum value are compared against expected events. Based on the comparison detecting at least one of the expected events being absent in the sequence chart, providing the optimal global quantum value as being smaller than the provisional global quantum value. Based on the comparison detecting no difference between the events in the sequence chart and the expected events, providing the optimal global quantum value as being larger than the provisional global quantum value.
    Type: Application
    Filed: September 5, 2012
    Publication date: March 6, 2014
    Applicant: Cadence Design Systems, Inc.
    Inventors: Qizhang Chao, Neeti K. Bhatnagar, George F. Frazier, Tuay-Ling Kathy Lang, Andrew Wilmot
  • Patent number: 7720665
    Abstract: A system for controlling reset in discrete event simulation is disclosed. The system includes a simulator configured to effect the discrete event simulation, the simulator having a plurality of shared executable files, a memory configured to store the simulator for execution, an operating system having a loading/unloading facility, and a control program configured to effect a reset operation by directing the operating system to unload the simulator from the memory and then reload the simulator into the memory using the loading/unloading facility.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: May 18, 2010
    Assignee: Cadence Design Systems, Inc.
    Inventors: George Franklin Frazier, Qizhang Chao, Tuay-Ling Kathy Lang, Neeti Khullar Bhatnagar, Andrew Robert Wilmot