Patents by Inventor Vishu R. Viswanathan

Vishu R. Viswanathan 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: 9294346
    Abstract: In one form of invention a process of operating a host computer coupled to a communications network including: determining whether a diversity flag is set, when a communications connection is requested; sending a request from the host computer to a proxy identification list server in a communications network for proxy pair identification information, when the diversity flag is set; receiving in the host computer the proxy pair identification information from the proxy identification list server in response to the host request; and wherein the sending includes communicating from the host computer to a destination computer though a first communication path that includes a first proxy device and though a second communication path, separate from the first communication path, that includes the second proxy device.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: March 22, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Stephen J. Perkins, Alan Gatherer, Krishnasamy Anandakumar, Alan V. McCree, Vishu R. Viswanathan
  • Patent number: 9106533
    Abstract: Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: August 11, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
  • Patent number: 8995430
    Abstract: A media over packet networking appliance provides a network interface, a voice transducer, and at least one integrated circuit assembly coupling the voice transducer to the network interface. The at least one integrated circuit assembly provides media over packet transmissions and holds bits defining reconstruction of a packet stream having a primary stage and a secondary stage. The secondary stage has one or more of linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains. The packet stream has an instance of single packet loss, and the reconstruction includes receiving a packet sequence represented by P(n)P(n?1)?, [Lost Packet], P(n+2)P(n+1)?, and P(n+3)P(n+2)?, obtaining as information from the secondary stage one or more of the linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains, and performing an excitation reconstruction utilizing said packet sequence thus received.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: March 31, 2015
    Assignee: Texas Instruments Incorporated
    Inventors: Krishnasamy Anandakumar, Alan V. McCree, Vishu R. Viswanathan
  • Publication number: 20140337501
    Abstract: In one form of the invention, a process of sending real-time information from a sender computer (103) to a receiver computer (105) coupled to the sender computer (103) by a packet network (100) wherein packets (111,113) sometimes become lost, includes steps of directing (441) packets (111) containing the real-time information from the sender computer (103) by at least one path (119) in the packet network (100) to the receiver computer (105), and directing packets (113) containing information dependent on the real-time information from the sender computer (103) by at least one path diversity path (117) in the packet network (100) to the same receiver computer (105).
    Type: Application
    Filed: July 25, 2014
    Publication date: November 13, 2014
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Stephen J. Perkins, Alan Gatherer, Krishnasamy Anandakumar, Alan V. McCree, Vishu R. Viswanathan
  • Patent number: 8824460
    Abstract: In one form of the invention, a process of sending real-time information from a sender computer (103) to a receiver computer (105) coupled to the sender computer (103) by a packet network (100) wherein packets (111,113) sometimes become lost, includes steps of directing (441) packets (111) containing the real-time information from the sender computer (103) by at least one path (119) in the packet network (100) to the receiver computer (105), and directing packets (113) containing information dependent on the real-time information from the sender computer (103) by at least one path diversity path (117) in the packet network (100) to the same receiver computer (105).
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: September 2, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: Stephen J. Perkins, Alan Gatherer, Krishnasamy Anandakumar, Alan V. McCree, Vishu R. Viswanathan
  • Publication number: 20130250938
    Abstract: Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
    Type: Application
    Filed: May 6, 2013
    Publication date: September 26, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
  • Publication number: 20130230043
    Abstract: A media over packet networking appliance provides a network interface, a voice transducer, and at least one integrated circuit assembly coupling the voice transducer to the network interface. The at least one integrated circuit assembly provides media over packet transmissions and holds bits defining reconstruction of a packet stream having a primary stage and a secondary stage. The secondary stage has one or more of linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains. The packet stream has an instance of single packet loss, and the reconstruction includes receiving a packet sequence represented by P(n)P(n?1)?, [Lost Packet], P(n+2)P(n+1)?, and P(n+3)P(n+2)?, obtaining as information from the secondary stage one or more of the linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains, and performing an excitation reconstruction utilizing said packet sequence thus received.
    Type: Application
    Filed: April 10, 2013
    Publication date: September 5, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Krishnasamy Anandakumar, Alan V. McCree, Vishu R. Viswanathan
  • Patent number: 8463601
    Abstract: Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: June 11, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
  • Patent number: 8456991
    Abstract: Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: June 4, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Vishu R. Viswanathan, Alan V. McCree, Krishnasamy Anandakumar
  • Publication number: 20120259624
    Abstract: Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
    Type: Application
    Filed: June 11, 2012
    Publication date: October 11, 2012
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
  • Patent number: 8224643
    Abstract: Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: July 17, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
  • Publication number: 20120008645
    Abstract: A media over packet networking appliance provides a network interface, a voice transducer, and at least one integrated circuit assembly coupling the voice transducer to the network interface. The at least one integrated circuit assembly provides media over packet transmissions and holds bits defining reconstruction of a packet stream having a primary stage and a secondary stage. The secondary stage has one or more of linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains. The packet stream has an instance of single packet loss, and the reconstruction includes receiving a packet sequence represented by P(n)P(n?1)?, [Lost Packet], P(n+2)P(n+1)?, and P(n+3)P(n+2)?, obtaining as information from the secondary stage one or more of the linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains, and performing an excitation reconstruction utilizing said packet sequence thus received.
    Type: Application
    Filed: September 22, 2011
    Publication date: January 12, 2012
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
  • Publication number: 20110301947
    Abstract: Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
    Type: Application
    Filed: August 15, 2011
    Publication date: December 8, 2011
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
  • Patent number: 8050254
    Abstract: A media over packet networking appliance provides a network interface, a voice transducer, and at least one integrated circuit assembly coupling the voice transducer to the network interface. The at least one integrated circuit assembly provides media over packet transmissions and holds bits defining reconstruction of a packet stream having a primary stage and a secondary stage. The secondary stage has one or more of linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains. The packet stream has an instance of single packet loss, and the reconstruction includes receiving a packet sequence represented by P(n)P(n?1)?, [Lost Packet], P(n+2)P(n+1)?, and P(n+3)P(n+2)?, obtaining as information from the secondary stage one or more of the linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains, and performing an excitation reconstruction utilizing said packet sequence thus received.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: November 1, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
  • Patent number: 8024182
    Abstract: Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: September 20, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
  • Publication number: 20110004808
    Abstract: A media over packet networking appliance provides a network interface, a voice transducer, and at least one integrated circuit assembly coupling the voice transducer to the network interface. The at least one integrated circuit assembly provides media over packet transmissions and holds bits defining reconstruction of a packet stream having a primary stage and a secondary stage. The secondary stage has one or more of linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains. The packet stream has an instance of single packet loss, and the reconstruction includes receiving a packet sequence represented by P(n)P(n?1)?, [Lost Packet], P(n+2)P(n+1)?, and P(n+3)P(n+2)?, obtaining as information from the secondary stage one or more of the linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains, and performing an excitation reconstruction utilizing said packet sequence thus received.
    Type: Application
    Filed: September 16, 2010
    Publication date: January 6, 2011
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
  • Patent number: 7822021
    Abstract: A media over packet networking appliance provides a network interface, a voice transducer, and at least one integrated circuit assembly coupling the voice transducer to the network interface. The at least one integrated circuit assembly provides media over packet transmissions and holds bits defining reconstruction of a packet stream having a primary stage and a secondary stage. The secondary stage has one or more of linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains. The packet stream has an instance of single packet loss, and the reconstruction includes receiving a packet sequence represented by P(n)P(n?1)?, [Lost Packet], P(n+2)P(n+1)?, and P(n+3)P(n+2)?, obtaining as information from the secondary stage one or more of the linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains, and performing an excitation reconstruction utilizing said packet sequence thus received.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: October 26, 2010
    Assignee: Texas Instruments Incorporated
    Inventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
  • Publication number: 20100085986
    Abstract: A media over packet networking appliance provides a network interface, a voice transducer, and at least one integrated circuit assembly coupling the voice transducer to the network interface. The at least one integrated circuit assembly provides media over packet transmissions and holds bits defining reconstruction of a packet stream having a primary stage and a secondary stage. The secondary stage has one or more of linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains. The packet stream has an instance of single packet loss, and the reconstruction includes receiving a packet sequence represented by P(n)P(n?1)?, [Lost Packet], P(n+2)P(n+1)?, and P(n+3)P(n+2)?, obtaining as information from the secondary stage one or more of the linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains, and performing an excitation reconstruction utilizing said packet sequence thus received.
    Type: Application
    Filed: December 11, 2009
    Publication date: April 8, 2010
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
  • Patent number: 7653045
    Abstract: A media over packet networking appliance provides a network interface, a voice transducer, and at least one integrated circuit assembly coupling the voice transducer to the network interface. The at least one integrated circuit assembly provides media over packet transmissions and holds bits defining reconstruction of a packet stream having a primary stage and a secondary stage. The secondary stage has one or more of linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains. The packet stream has an instance of single packet loss, and the reconstruction includes receiving a packet sequence represented by P(n)P(n?1)?, [Lost Packet], P(n+2)P(n+1)?, and P(n+3)P(n+2)?, obtaining as information from the secondary stage one or more of the linear predictive coding parameters, long term prediction lags, parity check, and adaptive and fixed codebook gains, and performing an excitation reconstruction utilizing said packet sequence thus received.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: January 26, 2010
    Assignee: Texas Instruments Incorporated
    Inventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
  • Patent number: RE43191
    Abstract: An acoustic noise suppression filter including attenuation filtering with a noise-free estimate based on a codebook of line spectral frequencies.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: February 14, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Levent M. Arslan, Alan V. McCree, Vishu R. Viswanathan