Patents by Inventor C. Murthy

C. Murthy 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: 8687622
    Abstract: Systems and methods for discovering SCTP associations between devices communicating in a network are described. A method comprises monitoring packets communicated among a plurality of source and destination devices, determining a combination of source EP address, source port number, destination IP address, and destination port number that defines an association between a source device and a destination device, and resolving a combination of source and destination verification tags that further defines the association based upon the combination of EP addresses and port numbers. The method further comprises ascertaining whether a subsequently monitored packet belongs to the association based at least in part upon an element of the combination of verification tags after at least one element of the combination of EP addresses and port numbers has changed during the ongoing communication.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: April 1, 2014
    Assignee: Tektronix, Inc.
    Inventors: Eric McNair, Jihao Zhong, Kalpana C. Murthy
  • Patent number: 8144688
    Abstract: Systems and methods for discovering SCTP associations between devices communicating in a network are described. A method comprises monitoring packets communicated among a plurality of source and destination devices, determining a combination of source EP address, source port number, destination IP address, and destination port number that defines an association between a source device and a destination device, and resolving a combination of source and destination verification tags that further defines the association based upon the combination of EP addresses and port numbers. The method further comprises ascertaining whether a subsequently monitored packet belongs to the association based at least in part upon an element of the combination of verification tags after at least one element of the combination of EP addresses and port numbers has changed during the ongoing communication.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: March 27, 2012
    Assignee: Tektronix, Inc.
    Inventors: Eric McNair, Jihao Zhong, Kalpana C. Murthy
  • Patent number: 8015260
    Abstract: A system and related method for calculating parity information for disk array drive failure recovery. More specifically, using eight bit coefficients and calculating parity information using valid eight bit encryption keys to produce finite field encrypted resultant multiplication. Further disclosed is a method of determining whether a potential encryption key of a particular number of bits produces valid results for all possible multiplications in determining parity values.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: September 6, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Purna C. Murthy
  • Publication number: 20090246829
    Abstract: Isolated nucleic acid molecules comprising a gene segment from a rhesus rotavirus (RRV) or from one of three rhesus:human reassortant viruses are disclosed, including isolated nucleic acid molecules having a sequence selected from the group consisting of: SEQ ID NO: 1-14, inclusive, and isolated nucleic acid molecules encoding a protein having a sequence selected from the group consisting of SEQ ID NO: 15-28, inclusive, as well as variants of the isolated nucleic acid molecules.
    Type: Application
    Filed: February 3, 2009
    Publication date: October 1, 2009
    Applicants: Services
    Inventors: Deborah A. Buonagurio, Alice F. Georgiu, Robert A. Lerch, Bruce B. Mason, Shridhara C. Murthy, Ruth S. Rappaport, Mohinder S. Sidhu, Stephen A. Udem, Timothy J. Zamb
  • Publication number: 20090129267
    Abstract: Systems and methods for discovering SCTP associations between devices communicating in a network are described. A method comprises monitoring packets communicated among a plurality of source and destination devices, determining a combination of source EP address, source port number, destination IP address, and destination port number that defines an association between a source device and a destination device, and resolving a combination of source and destination verification tags that further defines the association based upon the combination of EP addresses and port numbers. The method further comprises ascertaining whether a subsequently monitored packet belongs to the association based at least in part upon an element of the combination of verification tags after at least one element of the combination of EP addresses and port numbers has changed during the ongoing communication.
    Type: Application
    Filed: December 7, 2006
    Publication date: May 21, 2009
    Applicant: Tektronix, Inc
    Inventors: Eric McNair, Jihao Zhong, Kalpana C. Murthy
  • Patent number: 7485415
    Abstract: Isolated nucleic acid molecules comprising a gene segment from a rhesus rotavirus (RRV) or from one of three rhesus: human reassortant viruses are disclosed, including isolated nucleic acid molecules having a sequence selected from the group consisting of: SEQ ID NO: 1-14, inclusive, and isolated nucleic acid molecules encoding a protein having a sequence selected from the group consisting of SEQ ID NO: 15-28, inclusive, as well as variants of the isolated nucleic acid molecules.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: February 3, 2009
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Deborah A. Buonagurio, Alice F. Georgiu, Robert A. Lerch, Bruce B. Mason, Shridhara C. Murthy, Ruth S. Rappaport, Mohinder S. Sidhu, Stephen A. Udem, Timothy J. Zamb
  • Publication number: 20050144456
    Abstract: Disclosed is a method, apparatus, and system to provide for robust digital image watermarking utilizing a Walsh transform algorithm. A first image processor performs operations including partitioning a cover image, generating a key, and inserting a watermark symbol into the cover image utilizing a Walsh transform and the key. A second image processor performs operations including extracting the watermark symbol from the cover image utilizing a Walsh transform and the key.
    Type: Application
    Filed: December 11, 2003
    Publication date: June 30, 2005
    Inventors: Tinku Acharya, Bhargab Bhattacharya, Malay Kundu, C. Murthy, Santi Maity
  • Publication number: 20050129293
    Abstract: Disclosed is a method and apparatus to provide for fingerprint minutiae matching using scoring techniques. A plurality of minutiae in a fingerprint image is defined. A score associated with each minutia corresponding to the validity of each minutia is estimated. The fingerprint image is then matched against one or more sample fingerprint images utilizing a partial point set pattern matching (PSPM) algorithm.
    Type: Application
    Filed: December 11, 2003
    Publication date: June 16, 2005
    Inventors: Tinku Acharya, Bhargab Bhattacharya, Arindam Biswas, Partha Bhowmick, Arijit Bishnu, Sandip Das, Malay Kundu, C. Murthy, Subhas Nandy
  • Patent number: 6807649
    Abstract: A system and related method for calculating parity information for disk array drive failure recovery. More specifically, using eight bit coefficients and calculating parity information using valid eight bit encryption keys to produce finite field encrypted resultant multiplication. Further disclosed is a method of determining whether a potential encryption key of a particular number of bits produces valid results for all possible multiplications in determining parity values.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: October 19, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Purna C. Murthy
  • Patent number: 6732298
    Abstract: A system and method is disclosed for debugging of a hardware board that includes a processor with only a single level of interrupts that are either all enabled or all disabled. The processor does not implement nonmaskable interrupts. The processor on the board contains a machine check exception (MCP) input line that permits implementation of a nonmaskable pseudo-interrupt for debugging of the hardware board. The nonmaskable pseudo-interrupt informs the processor of a debug request even when all device interrupts in the interrupt processor are disabled. A processor-to-bus bridge connected to the processor on the hardware board contains a critical interrupt register. Test equipment connected to the processor-to-bus bridge sets a bit in the critical interrupt register for requesting the nonmaskable pseudo-interrupt, the processor-to-bus bridge reading the bit in the critical interrupt register to determine whether a nonmaskable pseudo interrupt debug request has occurred.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: May 4, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Purna C. Murthy, Michael L. Sabotta, Thomas W. Grieff
  • Patent number: 6694479
    Abstract: A method and related system for generating error correction or parity information in a multiple disk computer system supporting multiple drive fault tolerance. The method involves defining parity equations to be based not only on data written to drives of the computer system but also on other parity information such that in solving for missing data, specific equations need not be used. Defining parity equations in this manner, in combination with a coefficient matrix that defines the coefficients of the various parity equations, ensures the ability to solve for the missing data even if some of the failed drives contain parity information.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: February 17, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Purna C. Murthy, Sohail Hameed, Mark J. Thompson
  • Patent number: 6643822
    Abstract: A computer system with an array of disk drives is disclosed. The drive array is capable of supporting greater than 15 drive fault tolerance accomplished by using coefficients for parity equations spanning greater than eight bits.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: November 4, 2003
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Purna C. Murthy
  • Patent number: 6092169
    Abstract: In a computer system there is a storage subsystem and an array controller circuit controlling an array of hard drives in the storage subsystem. Upon powering the storage subsystem, the array controller automatically determines whether the hard drives have been moved to new bay locations in the storage subsystem and whether a new complete logical drive, consisting of at least one hard drive, has been added to the storage subsystem. Upon discovery of any drive movement or logical drive unit addition, the array controller automatically reconfigures each hard drive by at least updating the configuration information in accordance with the changes.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: July 18, 2000
    Assignee: Compaq Computer Corporation
    Inventors: Purna C. Murthy, Mark J. Thompson