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).
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Patent number: 9294346Abstract: 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: GrantFiled: July 25, 2014Date of Patent: March 22, 2016Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Stephen J. Perkins, Alan Gatherer, Krishnasamy Anandakumar, Alan V. McCree, Vishu R. Viswanathan
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Patent number: 9106533Abstract: 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: GrantFiled: May 6, 2013Date of Patent: August 11, 2015Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Patent number: 8995430Abstract: 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: GrantFiled: April 10, 2013Date of Patent: March 31, 2015Assignee: Texas Instruments IncorporatedInventors: Krishnasamy Anandakumar, Alan V. McCree, Vishu R. Viswanathan
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Publication number: 20140337501Abstract: 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: ApplicationFiled: July 25, 2014Publication date: November 13, 2014Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Stephen J. Perkins, Alan Gatherer, Krishnasamy Anandakumar, Alan V. McCree, Vishu R. Viswanathan
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Patent number: 8824460Abstract: 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: GrantFiled: February 6, 2013Date of Patent: September 2, 2014Assignee: Texas Instruments IncorporatedInventors: Stephen J. Perkins, Alan Gatherer, Krishnasamy Anandakumar, Alan V. McCree, Vishu R. Viswanathan
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Publication number: 20130250938Abstract: 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: ApplicationFiled: May 6, 2013Publication date: September 26, 2013Applicant: Texas Instruments IncorporatedInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Publication number: 20130230043Abstract: 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: ApplicationFiled: April 10, 2013Publication date: September 5, 2013Applicant: Texas Instruments IncorporatedInventors: Krishnasamy Anandakumar, Alan V. McCree, Vishu R. Viswanathan
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Patent number: 8463601Abstract: 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: GrantFiled: June 11, 2012Date of Patent: June 11, 2013Assignee: Texas Instruments IncorporatedInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Patent number: 8456991Abstract: 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: GrantFiled: September 8, 2009Date of Patent: June 4, 2013Assignee: Texas Instruments IncorporatedInventors: Vishu R. Viswanathan, Alan V. McCree, Krishnasamy Anandakumar
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Publication number: 20120259624Abstract: 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: ApplicationFiled: June 11, 2012Publication date: October 11, 2012Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Patent number: 8224643Abstract: 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: GrantFiled: August 15, 2011Date of Patent: July 17, 2012Assignee: Texas Instruments IncorporatedInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Publication number: 20120008645Abstract: 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: ApplicationFiled: September 22, 2011Publication date: January 12, 2012Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Publication number: 20110301947Abstract: 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: ApplicationFiled: August 15, 2011Publication date: December 8, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Patent number: 8050254Abstract: 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: GrantFiled: September 16, 2010Date of Patent: November 1, 2011Assignee: Texas Instruments IncorporatedInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Patent number: 8024182Abstract: 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: GrantFiled: June 30, 2009Date of Patent: September 20, 2011Assignee: Texas Instruments IncorporatedInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Publication number: 20110004808Abstract: 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: ApplicationFiled: September 16, 2010Publication date: January 6, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Patent number: 7822021Abstract: 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: GrantFiled: December 11, 2009Date of Patent: October 26, 2010Assignee: Texas Instruments IncorporatedInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Publication number: 20100085986Abstract: 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: ApplicationFiled: December 11, 2009Publication date: April 8, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Patent number: 7653045Abstract: 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: GrantFiled: July 6, 2004Date of Patent: January 26, 2010Assignee: Texas Instruments IncorporatedInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Patent number: RE43191Abstract: An acoustic noise suppression filter including attenuation filtering with a noise-free estimate based on a codebook of line spectral frequencies.Type: GrantFiled: August 24, 2004Date of Patent: February 14, 2012Assignee: Texas Instruments IncorporatedInventors: Levent M. Arslan, Alan V. McCree, Vishu R. Viswanathan