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).
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Patent number: 8687622Abstract: 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: GrantFiled: February 15, 2012Date of Patent: April 1, 2014Assignee: Tektronix, Inc.Inventors: Eric McNair, Jihao Zhong, Kalpana C. Murthy
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Patent number: 8144688Abstract: 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: GrantFiled: December 7, 2006Date of Patent: March 27, 2012Assignee: Tektronix, Inc.Inventors: Eric McNair, Jihao Zhong, Kalpana C. Murthy
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Patent number: 8015260Abstract: 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: GrantFiled: August 26, 2004Date of Patent: September 6, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventor: Purna C. Murthy
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Publication number: 20090246829Abstract: 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: ApplicationFiled: February 3, 2009Publication date: October 1, 2009Applicants: ServicesInventors: 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
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Publication number: 20090129267Abstract: 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: ApplicationFiled: December 7, 2006Publication date: May 21, 2009Applicant: Tektronix, IncInventors: Eric McNair, Jihao Zhong, Kalpana C. Murthy
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Patent number: 7485415Abstract: 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: GrantFiled: February 19, 2003Date of Patent: February 3, 2009Assignee: The United States of America as represented by the Department of Health and Human ServicesInventors: 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
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Publication number: 20050144456Abstract: 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: ApplicationFiled: December 11, 2003Publication date: June 30, 2005Inventors: Tinku Acharya, Bhargab Bhattacharya, Malay Kundu, C. Murthy, Santi Maity
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Publication number: 20050129293Abstract: 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: ApplicationFiled: December 11, 2003Publication date: June 16, 2005Inventors: Tinku Acharya, Bhargab Bhattacharya, Arindam Biswas, Partha Bhowmick, Arijit Bishnu, Sandip Das, Malay Kundu, C. Murthy, Subhas Nandy
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Patent number: 6807649Abstract: 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: GrantFiled: May 23, 2000Date of Patent: October 19, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventor: Purna C. Murthy
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Patent number: 6732298Abstract: 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: GrantFiled: July 31, 2000Date of Patent: May 4, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: Purna C. Murthy, Michael L. Sabotta, Thomas W. Grieff
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Patent number: 6694479Abstract: 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: GrantFiled: May 23, 2000Date of Patent: February 17, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: Purna C. Murthy, Sohail Hameed, Mark J. Thompson
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Patent number: 6643822Abstract: 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: GrantFiled: May 23, 2000Date of Patent: November 4, 2003Assignee: Hewlett-Packard Development Company, L.P.Inventor: Purna C. Murthy
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Patent number: 6092169Abstract: 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: GrantFiled: April 2, 1997Date of Patent: July 18, 2000Assignee: Compaq Computer CorporationInventors: Purna C. Murthy, Mark J. Thompson