Patents by Inventor Shivananda S. Shetty

Shivananda S. Shetty 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: 8725748
    Abstract: A tester information tester information processing system provides test equipment for generating test data. A markup language encoder connected to the test equipment encodes the test data for storage in an object-oriented database management system connected to the markup language encoder, and a user interface is operatively connected to the object-oriented database management system for retrieval of the test data.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: May 13, 2014
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Srikanth Sundararajan, Siu May Ho, Shivananda S. Shetty
  • Patent number: 7634127
    Abstract: A method and system for fault isolation in semiconductor with devices thereon includes determining test data from a plurality of semiconductor devices and creating a failure bitmap of locations of the plurality of semiconductor devices and test data in a vector graphic CAD format. The vector graphic CAD format allows storage of test data on multiple layers.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: December 15, 2009
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Srikanth Sundararajan, Siu May Ho, Shivananda S. Shetty
  • Patent number: 7263451
    Abstract: A method for correlating semiconductor process data analyzes a semiconductor device that has been treated by a process, to produce process data related to the process. The data is converted into an image pattern, and automatic image retrieval is used to identify other devices having similar images. The process data is then correlated with prior process data of the other devices having the similar images.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: August 28, 2007
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Jeffrey P. Erhardt, Shivananda S. Shetty, Paul J. Steffan
  • Patent number: 7197435
    Abstract: A method for analyzing a semiconductor device tests a semiconductor device to produce first and second data. A clustering method is applied to the first data, creating a clustered first data. The clustered first data is then correlated with the second data to determine analyzed data.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: March 27, 2007
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Jeffrey P. Erhardt, Shivananda S. Shetty
  • Patent number: 7155652
    Abstract: A system and method for processing tester information is provided having a system-under-test. A pattern is written to the system-under-test, and a pattern is read therefrom. The pattern written is then compared to the pattern read from the system-under-test. The signal from the comparison is processed, and the signal from the signal processing is then analyzed.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: December 26, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventor: Shivananda S. Shetty
  • Patent number: 7137085
    Abstract: A system and method for wafer level global bitmap characterization include determining chip level defect data bitmaps from a semiconductor wafer, and consolidating the chip level defect data bitmaps into a global wafer level bitmap that characterizes substantially the entire wafer failure configuration. The global wafer level bitmap is then analyzed and compared with other global wafer level bitmaps to develop correlations thereamong and develop global wafer level bitmap definitions for conducting at least one of wafer-to-wafer, boat-to-boat, and lot-to-lot process analysis based upon the global wafer level bitmap definitions.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: November 14, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: John J. Wang, Siu May Ho, Jeffrey P. Erhardt, Srikanth Sundararajan, David C. Newbury, Shivananda S. Shetty, Paul J. Steffan, Franklyn Shihyu Wu
  • Patent number: 7099789
    Abstract: A method and system of processing tester information of a system under test is provided. Data of a tested characteristic of the system under test is generated. A distribution curve is extracted from the data. A signature of the distribution curve is determined, and a map of the signature on a depiction of the system under test is presented. The distribution curve also can be categorized in a plurality of bins, and bitmaps are generated for the sections in each of the plurality of bins. Systematic signatures are determined from the bitmaps in the block, and the signatures are correlated with the locations on the system under test.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: August 29, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Franklyn Shihyu Wu, Jeffrey P. Erhardt, Paul J. Steffan, Jerry H. G. Tsiang, Shivananda S. Shetty, John J. Wang
  • Patent number: 6907379
    Abstract: A system and method are provided for processing tester information including means of determining axis information and means of determining break information for the tester information. The axis information and the break information are applied to the tester information to provide disjointed tester information. The disjointed tester information is then plotted on a disjointed axis graph.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: June 14, 2005
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Franklyn Shihyu Wu, Shivananda S. Shetty
  • Patent number: 6875560
    Abstract: A method of testing an integrated circuit is provided, which includes providing a semiconductor substrate having a semiconductor device provided thereon. A first dielectric layer is formed over the semiconductor substrate and a first channel is formed in the first dielectric layer in contact with the semiconductor device. A first contact pad mask layer is formed and a first contact pad in the first contact pad mask layer is formed in contact with the first channel. The first contact pad is used to test the first channel and the semiconductor device and the first contact pad mask layer and the first contact pad are removed.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: April 5, 2005
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Paul J. Steffan, Jeffrey P. Erhardt, Shivananda S. Shetty
  • Patent number: 6864107
    Abstract: A system of testing wafer process-splits in a semiconductor wafer is provided. A first test is performed on a semiconductor wafer in a plurality of locations to obtain first data. The first data is clustered into a plurality of bins to obtain process-split locations. Second tests are performed on the semiconductor wafer in the process-split locations to obtain second data. The first data and second data arc correlated to determine process-split data.
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: March 8, 2005
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Jeffrey P. Erhardt, Shivananda S. Shetty
  • Patent number: 6815233
    Abstract: A system for processing tester information is provided. Data is collected for a plurality of dies on a semiconductor wafer. Data and a pattern covering the semiconductor wafer are selected. Selected data are graphed in a trellis of graphs spread across the semiconductor wafer. The trellis of graphs is oriented over an outline of the semiconductor wafer.
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: November 9, 2004
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Jeffrey P. Erhardt, Shivananda S. Shetty
  • Patent number: 6766265
    Abstract: A method for processing tester information is provided. The number of clusters of data in the tester information is determined to determine the number of data clusters. A basis is determined from the tester information to be used for plotting the data clusters. The data clusters are plotted on a plurality of trellis charts to form a trellising plot with a trellis of trellis charts.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: July 20, 2004
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Shivananda S. Shetty, Jeffrey P. Erhardt
  • Publication number: 20040122601
    Abstract: A method for processing tester information is provided. The number of clusters of data in the tester information is determined to determine the number of data clusters. A basis is determined from the tester information to be used for plotting the data clusters. The data clusters are plotted on a plurality of trellis charts to form a trellising plot with a trellis of trellis charts.
    Type: Application
    Filed: December 18, 2002
    Publication date: June 24, 2004
    Inventors: Shivananda S. Shetty, Jeffrey P. Erhardt