Patents by Inventor Gowri Shankar
Gowri Shankar 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: 8704951Abstract: Various embodiments of the present disclosure provide techniques for performing video denoising (VDN). An adaptive noise threshold is dynamically determined and used to distinguish between frame to frame differences in pixel values that relate to image motion from those differences that relate to noise. The disclosed techniques enable the noise threshold to be continuously updated, for example as frequently as once per frame, so that the noise threshold may closely track to varying levels of noise in the input video data. The techniques may be implemented in, for example, a video format conversion apparatus. Advantageously, the techniques may be incorporated in programmable logic devices (PLD's) or Field Programmable Gate Arrays (FPGA's) configurable to perform video format conversion, while adding only modest additional computational demands on the apparatus.Type: GrantFiled: April 5, 2013Date of Patent: April 22, 2014Assignee: Altera CorporationInventors: Kieron Turkington, Vivek Gowri-Shankar
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Patent number: 8693345Abstract: System and method for topology management of dynamic ad hoc wireless communication networks. The network nodes are organized in a multi-level hierarchical architecture whereby the nodes at each level are managed by nodes at the next higher level. In a three-layer network, leaf nodes populate the lowest level, cluster head nodes the intermediate level, and regional head nodes the highest level. Priority-based backbone tree paths are constructed by selecting and connecting high capability nodes, such that the unselected nodes are one-hop away from a connected node. In a two backbone tree path construction, a primary backbone tree path carries the high priority traffic and a secondary backbone tree path carries the lower priority traffic. The connectivities of the backbone tree paths are maintained dynamically. So also are high priority traffic flows using the Dynamic Priority Threshold mechanism with High Fidelity Monitoring and traffic siphoning via unutilized network resources.Type: GrantFiled: October 12, 2011Date of Patent: April 8, 2014Assignee: Mayflower Communications Company, Inc.Inventors: Seoung Bum Lee, Gowri Shankar Rajappan
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Publication number: 20130111032Abstract: A method, system, and computer program product for cloud optimization using workload analysis are provided in the illustrative embodiments. An architecture of a workload received for execution in a cloud computing environment is identified. The cloud computing environment includes a set of cloud computing resources. A section of the workload is identified and marked for static analysis. Static analysis is performed on the section to determine a characteristic of the workload. A subset of the set of cloud computing resources is selected such that a cloud competing resource in the subset is available for allocating to the workload and has a characteristic that matches the characteristic of the workload as determined from the static analysis. The subset of cloud computing resources is suggested to a job scheduler for scheduling the workload for execution.Type: ApplicationFiled: October 28, 2011Publication date: May 2, 2013Applicant: International Business Machines CorporationInventors: Sangram Alapati, Prathiba Kumar, Gowri Shankar Palani, Rajan Ravindran, Satish Kumar Sadasivam
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Publication number: 20130094366Abstract: System and method for topology management of dynamic ad hoc wireless communication networks. The network nodes are organized in a multi-level hierarchical architecture whereby the nodes at each level are managed by nodes at the next higher level. In a three-layer network, leaf nodes populate the lowest level, cluster head nodes the intermediate level, and regional head nodes the highest level. Priority-based backbone tree paths are constructed by selecting and connecting high capability nodes, such that the unselected nodes are one-hop away from a connected node. In a two backbone tree path construction, a primary backbone tree path carries the high priority traffic and a secondary backbone tree path carries the lower priority traffic. The connectivities of the backbone tree paths are maintained dynamically. So also are high priority traffic flows using the Dynamic Priority Threshold mechanism with High Fidelity Monitoring and traffic siphoning via unutilized network resources.Type: ApplicationFiled: October 12, 2011Publication date: April 18, 2013Inventors: Seoung Bum Lee, Gowri Shankar Rajappan
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Patent number: 8289447Abstract: A method of estimating the interlacing mode used in a series of video frames presented as a sequence of fields is described. In one implementation, the method includes calculating a metric indicative of the difference between a current field of the sequence and a previous field of the sequence and determining from the metric so calculated the most likely type of the current field by reference to a Hidden Markov Model.Type: GrantFiled: July 14, 2009Date of Patent: October 16, 2012Assignee: Altera CorporationInventor: Vivek Gowri-Shankar
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Patent number: 8134995Abstract: A system, method, and computer readable medium for mobile ad hoc network routing based upon a hardware address that comprises, identifying a destination node hardware address of a data packet that is outbound from a host node, searching a host node routing table for a destination node route from the host node to the destination node hardware address, routing the data packet to the destination node route in the event that the host node routing table returns a destination node hardware address, appending a flooding packet to the data packet in the event that the host node routing table returns a null destination node hardware address, and broadcasting the data packet to at least one neighbor node if the data packet has the flooding packet appended to it.Type: GrantFiled: January 12, 2007Date of Patent: March 13, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Mohan Reddy Duggi, Gowri Shankar
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Publication number: 20120026877Abstract: System and method for providing data transport Quality of Service (QoS) assurances in homogeneous and heterogeneous communication networks consisting of one or more communication interface types. The system includes Subnet Managers for managing the resources of nodes within the subnets and Flow Managers for managing the communication flows between the nodes. A Real-time Reservation Transport Protocol (RRTP) establishes the resource reservations and QoS transport services for the communication flow payload over the reserved paths. The communication flows are protected against topological variations in the network, such as from node mobility. QoS assurances are also provided to secure communication flows through interoperation with security protocols, such as Internet Protocol Security (IPsec), or encryption devices, such as High Assurance Internet Protocol Encryptor (HAIPE).Type: ApplicationFiled: July 30, 2010Publication date: February 2, 2012Inventors: Gowri Shankar Rajappan, Seoung Bum Lee
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Patent number: 7852964Abstract: An antijam filter and method for filtering interference signals from signals received from the desired user in spatially multiplexed wireless communication systems. The antijam filter estimates the interference from known and unknown sources, and uses that estimate to filter the interference from the received signals. The filtered desired user signals are rendered for further signal processing using existing methods. The antijam filter and method are modular, with applicability to a wide range of wireless communication systems employing multiple antennas at the receiver.Type: GrantFiled: June 19, 2006Date of Patent: December 14, 2010Assignee: Mayflower Communications Company, Inc.Inventors: Gowri Shankar Rajappan, Ravi Sivasankaran, John Cafarella
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Patent number: 7848757Abstract: Mobility in a mobile ad hoc network (MANET) can be extended by using fixed network resources to support MANET-level communication between a traveling MANET node and the remainder of the MANET. The IPv6 protocol is used over the fixed network resources to support the MANET-level communication, and mobility-supporting features of the IPv6 protocol are exploited without modifying the IPv6 protocol.Type: GrantFiled: October 29, 2004Date of Patent: December 7, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Mohan R. Duggi, Gowri Shankar Ramanarayanan
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Patent number: 7672307Abstract: For use in a mobile ad hoc network (MANET), a first MANET node for routing data packets using Layer 2 information. The first MANET node comprises: 1) a radio frequency (RF) transceiver for wirelessly communicating with other MANET nodes; and 2) a controller for receiving incoming data packets from the RF transceiver and sending outgoing data packets to the RF transceiver. The controller receives a first data packet from an Internet protocol (IP) layer associated with the first MANET node, determines a first medium access control (MAC) layer address associated with the first data packet, and adds the first MAC layer address to the first data packet.Type: GrantFiled: January 23, 2004Date of Patent: March 2, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Mohan R. Duggi, Gowri Shankar, Sudhindra P. Herle
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Publication number: 20080170518Abstract: A system, method, and computer readable medium for mobile ad hoc network routing based upon a hardware address that comprises, identifying a destination node hardware address of a data packet that is outbound from a host node, searching a host node routing table for a destination node route from the host node to the destination node hardware address, routing the data packet to the destination node route in the event that the host node routing table returns a destination node hardware address, appending a flooding packet to the data packet in the event that the host node routing table returns a null destination node hardware address, and broadcasting the data packet to at least one neighbor node if the data packet has the flooding packet appended to it.Type: ApplicationFiled: January 12, 2007Publication date: July 17, 2008Applicant: Samsung Electronics Co., LTD.Inventors: Mohan Reddy Duggi, Gowri Shankar
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Publication number: 20070291866Abstract: An antijam filter and method for filtering interference signals from signals received from the desired user in spatially multiplexed wireless communication systems. The antijam filter estimates the interference from known and unknown sources, and uses that estimate to filter the interference from the received signals. The filtered desired user signals are rendered for further signal processing using existing methods. The antijam filter and method are modular, with applicability to a wide range of wireless communication systems employing multiple antennas at the receiver.Type: ApplicationFiled: June 19, 2006Publication date: December 20, 2007Inventors: Gowri Shankar Rajappan, Ravi Sivasankaran, John Cafarella
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Publication number: 20060211761Abstract: The invention relates to particular hydroxyl and protected hydroxyl derivatives of compounds known to be useful as HMG CoA-reductase inhibitors. In particular, herein are provided hydroxyl and protected hydroxyl compounds of Formula I and their corresponding lactones.Type: ApplicationFiled: July 8, 2003Publication date: September 21, 2006Inventors: Yatendra Kumar, Ram Aryan, Jitendra Sattigeri, Mohammad Salman, Gowri Shankar, Kumar Bhushan, Bhargav Pandya, Ramnik Sharma
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Patent number: 7084301Abstract: The optically active compound, R (?)-5-[2-[[2-(2-ethoxyphenoxy)ethyl]amino]propyl]-2-hydroxybenzenesulfonamide in good optical purity, a metabolite of the ?1-adrenergic blocking agent tamsulosin, and methods for the preparation thereof. Pharmaceutical compositions including the optically active compound and methods of treatment comprising administration of an effective ?1-adrenergic antagonistic amount of such compositions to mammals.Type: GrantFiled: December 17, 2004Date of Patent: August 1, 2006Assignee: Ranbaxy Laboratories LimitedInventors: Yatendra Kumar, Ram Chander Aryan, Radhakrishnan Gowri Shankar, Kumar Hari Bhushan, Anita Chugh
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Patent number: 7078430Abstract: The invention relates to particular hydroxyl and protected hydroxyl derivatives of compounds known to be useful as HMG CoA-reductase inhibitors. In particular, herein are provided hydroxyl and protected hydroxyl compounds of Formula I and their corresponding lactones.Type: GrantFiled: May 5, 2003Date of Patent: July 18, 2006Assignee: Ranbaxy Laboratories LimitedInventors: Yatendra Kumar, Ram Chander Aryan, Jitendra Sattigeri, Mohammad Salman, Gowri Shankar, Kumar Hari Bhushan, Bhargav R. Panyda, Ramnik Sharma
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Patent number: 6894188Abstract: The optically active compound, R(?)-5-[2-[[2-(2-ethoxyphenoxy)ethyl]amino]propyl]-2-hydroxybenzenesulfonamide in good optical purity, a metabolite of the ?1-adrenergic blocking agent tamsulosin, and methods for the preparation thereof. Pharmaceutical compositions including the optically active compound and methods of treatment comprising administration of an effective ?-adrenergic antagonistic amount of such compositions to mammals.Type: GrantFiled: January 14, 2003Date of Patent: May 17, 2005Assignee: Ranbaxy Laboratory LimitedInventors: Yatendra Kumar, Ram Chander Aryan, Radhakrishnan Gowri Shankar, Kumar Hari Bhushan, Anita Chugh
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Publication number: 20050041628Abstract: For use in a mobile ad hoc network (MANET), a first MANET node for routing data packets using Layer 2 information. The first MANET node comprises: 1) a radio frequency (RF) transceiver for wirelessly communicating with other MANET nodes; and 2) a controller for receiving incoming data packets from the RF transceiver and sending outgoing data packets to the RF transceiver. The controller receives a first data packet from an Internet protocol (IP) layer associated with the first MANET node, determines a first medium access control (MAC) layer address associated with the first data packet, and adds the first MAC layer address to the first data packet.Type: ApplicationFiled: January 23, 2004Publication date: February 24, 2005Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Mohan Duggi, Gowri Shankar, Sudhindra Herle
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Publication number: 20040019100Abstract: The invention relates to particular hydroxyl and protected hydroxyl derivatives of compounds known to be useful as HMG CoA-reductase inhibitors.Type: ApplicationFiled: May 5, 2003Publication date: January 29, 2004Inventors: Yatendra Kumar, Ram Chander Aryan, Jitendra Sattigeri, Mohammad Salman, Gowri Shankar, Kumar Hari Bhushan, Bhargav R. Pandya, Ramnik Sharma