Patents by Inventor Hema Prasad

Hema Prasad 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: 10204416
    Abstract: Deskew for image review, such as SEM review, aligns inspection and review coordinate systems. Deskew can be automated using design files or inspection images. A controller that communicates with a review tool can align a file of the wafer, such as a design file or an inspection image, to an image of the wafer from the review tool; compare alignment sites of the file to alignment sites of the image from the review tool; and generate a deskew transform of coordinates of the alignment sites of the file and coordinates of alignment sites of the image from the review tool. The image of the wafer may not contain defects.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: February 12, 2019
    Assignee: KLA-Tencor Corporation
    Inventors: Arpit Jain, Arpit Yati, Thirupurasundari Jayaraman, Raghavan Konuru, Raj Kuppa, Hema Prasad, Saiyashwanth Momula, Arun Lobo
  • Publication number: 20170228866
    Abstract: Deskew for image review, such as SEM review, aligns inspection and review coordinate systems. Deskew can be automated using design files or inspection images. A controller that communicates with a review tool can align a file of the wafer, such as a design file or an inspection image, to an image of the wafer from the review tool; compare alignment sites of the file to alignment sites of the image from the review tool; and generate a deskew transform of coordinates of the alignment sites of the file and coordinates of alignment sites of the image from the review tool. The image of the wafer may not contain defects.
    Type: Application
    Filed: September 7, 2016
    Publication date: August 10, 2017
    Inventors: Arpit Jain, Arpit Yati, Thirupurasundari Jayaraman, Raghavan Konuru, Raj Kuppa, Hema Prasad, Saiyashwanth Momula, Arun Lobo
  • Patent number: 7424741
    Abstract: An approach for preventing denial-of-service attacks on Secure Sockets Layer (“SSL”) protocol is described. Queues are generated for handshake state connections and data transmission connections. A connection object representing a new SSL connection is time-stamped as it enters the handshake portion of the SSL protocol. A connection pointer to the connection object is placed at the head of the handshake queue. As new SSL messages are transferred between client and SSL server, the time-stamp is updated when the entire message is received, the connection pointer is repositioned to the head of the queue. A timer event periodically surveys the queues. If connection packet transmission gaps remain below a specified maximum handshake gap time, a connection is allowed to progress to the data transmission state. If any connection exceeds the specified gap time, the SSL connection is dropped.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: September 9, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Martin Grimm, Brad Barfield, Eric Fritzges, Hema Prasad, Robert R. Branum, Jr.