Patents by Inventor Rajesh Vijayaraghavan

Rajesh Vijayaraghavan 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: 8190391
    Abstract: A method includes receiving a first set of parameters associated with a plurality of die. A first die performance metric associated with a selected die is determined based on the first set of parameters. At least one neighborhood die performance metric associated with a set comprised of a plurality of die that neighbor the selected die is determined based on the first set of parameters. A second die performance metric is determined for the selected die based on the first die performance metric and the neighborhood die performance metric.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: May 29, 2012
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Daniel Kadosh, Gregory A. Cherry, Carl I. Bowen, Luis De La Fuente, Rajesh Vijayaraghavan
  • Patent number: 8010310
    Abstract: A method includes performing burn-in testing of a device in a tester to generate post burn-in data. Pre-burn-in data associated with the device is compared to the post burn-in data. The device is identified as an outlier device based on the comparison.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: August 30, 2011
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Rajesh Vijayaraghavan, Benjamin Ertle, James E. Routh, Paul A. Ferno
  • Patent number: 7788065
    Abstract: A method includes collecting trace data associated with a first device tester. A tester health metric is generated for the first device tester. At least one device tested by the first device tester is retested responsive to determining the tester health metric violates a predetermined threshold. A system includes a first device tester operable to test devices and a tester monitoring unit. The tester monitoring unit is operable to collect trace data associated with the first device tester, generate a tester health metric for the first device tester, and initiate a retest of at least one device tested by the first device tester responsive to determining the tester health metric violates a predetermined threshold.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: August 31, 2010
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Elfido Coss, Jr., Eric Omar Green, Rajesh Vijayaraghavan
  • Patent number: 7716004
    Abstract: A method includes collecting trace data associated with a plurality of device testers. Tester health metrics are generated for each of the device testers. The tester health metrics are analyzed to identify a selected tester health metric that diverges from the plurality of tester health metrics. A corrective action is initiated for the tester associated with the selected tester health metric. A method includes collecting trace data associated with a plurality of device testers. The trace data for each of the device testers is compared to a reference trace data set to generate tester health metrics for each of the device testers based on the difference therebetween. The tester health metrics are analyzed to identify a selected tester health metric that diverges from the plurality of tester health metrics. A corrective action is initiated for the tester associated with the selected tester health metric.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: May 11, 2010
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Elfido Coss, Jr., Kevin R. Lensing, Eric Omar Green, Rajesh Vijayaraghavan
  • Publication number: 20090027077
    Abstract: A method includes performing burn-in testing of a device in a tester to generate post burn-in data. Pre-burn-in data associated with the device is compared to the post burn-in data. The device is identified as an outlier device based on the comparison.
    Type: Application
    Filed: July 27, 2007
    Publication date: January 29, 2009
    Inventors: Rajesh Vijayaraghavan, Benjamin Ertle, James E. Routh, Paul A. Ferno
  • Publication number: 20090012737
    Abstract: A method includes collecting trace data associated with a first device tester. A tester health metric is generated for the first device tester. At least one device tested by the first device tester is retested responsive to determining the tester health metric violates a predetermined threshold.
    Type: Application
    Filed: July 2, 2007
    Publication date: January 8, 2009
    Inventors: Elfido Coss, JR., Eric Omar Green, Rajesh Vijayaraghavan
  • Publication number: 20090012730
    Abstract: A method includes collecting trace data associated with a plurality of device testers. Tester health metrics are generated for each of the device testers. The tester health metrics are analyzed to identify a selected tester health metric that diverges from the plurality of tester health metrics. A corrective action is initiated for the tester associated with the selected tester health metric. A method includes collecting trace data associated with a plurality of device testers. The trace data for each of the device testers is compared to a reference trace data set to generate tester health metrics for each of the device testers based on the difference therebetween. The tester health metrics are analyzed to identify a selected tester health metric that diverges from the plurality of tester health metrics. A corrective action is initiated for the tester associated with the selected tester health metric.
    Type: Application
    Filed: July 2, 2007
    Publication date: January 8, 2009
    Inventors: ELFIDO COSS, JR., Kevin R. Lensing, Eric Omar Green, Rajesh Vijayaraghavan
  • Publication number: 20080262769
    Abstract: A method includes receiving a first set of parameters associated with a particular die. A health metric for a particular die is determined using a multivariate analysis of the first set of parameters. The health metric incorporates at least one performance metric. At least one of a market segment designator or a testing plan associated with the particular die is determined based on the health metric.
    Type: Application
    Filed: April 23, 2007
    Publication date: October 23, 2008
    Inventors: DANIEL KADOSH, Gregory A. Cherry, Carl L. Bowen, Luis De La Fuente, Rajesh Vijayaraghavan
  • Publication number: 20080244348
    Abstract: A method includes receiving a first set of parameters associated with a plurality of die. A first die performance metric associated with a selected die is determined based on the first set of parameters. At least one neighborhood die performance metric associated with a set comprised of a plurality of die that neighbor the selected die is determined based on the first set of parameters. A second die performance metric is determined for the selected die based on the first die performance metric and the neighborhood die performance metric.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 2, 2008
    Inventors: Daniel Kadosh, Gregory A. Cherry, Carl Bowen, Luis De La Fuente, Rajesh Vijayaraghavan
  • Publication number: 20080172189
    Abstract: A method includes receiving a first set of parameters associated with a subset of a plurality of die on a wafer subjected to testing. The first set of data is expanded to generate estimated values for the first set of parameters for at least one untested die not included in the subset. A die health metric is determined for at least a portion of the plurality of die based on the first set of parameters including the estimated values.
    Type: Application
    Filed: January 16, 2007
    Publication date: July 17, 2008
    Inventors: Daniel Kadosh, Gregory A. Cherry, Carl Bowen, Luis De La Fuente, Rajesh Vijayaraghavan