Patents by Inventor Krishnasamy Anandakumar
Krishnasamy Anandakumar 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: 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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Patent number: 7961758Abstract: 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: December 15, 2009Date of Patent: June 14, 2011Assignee: Texas Instruments IncorporatedInventors: Stephen J. Perkins, Alan Gatherer, Krishnasamy Anandakumar, Alan V. McCree, Vishu Viswanathan
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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: 20100091800Abstract: 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: December 15, 2009Publication date: April 15, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Stephen J. Perkins, Alan Gatherer, Krishnasamy Anandakumar, Alan V. McCree, Vishu Viswanathan
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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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Publication number: 20090323679Abstract: 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: September 8, 2009Publication date: December 31, 2009Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Patent number: 7626576Abstract: A wireless interface device is used to RF communicate between a computer system and input devices comprising a keyboard and a mouse. The interface device comprises a radio transmitter and receiver, wherein a modem encodes data to be sent by the radio transmitter and decodes data received by the radio receiver. A baseband circuit encrypts data to be transmitted and decrypts received data. The wireless interface device has power saving functions to extend the battery life of the input device and has the capability to automatically select between several communication frequencies or channels as well as automatically select between RF data rates.Type: GrantFiled: March 16, 2005Date of Patent: December 1, 2009Assignee: Free Alliance Sdn BhdInventors: Krishnasamy Anandakumar, Martin George Morris, Suresh Kumar Singamsetty, Dennis Ching Chung Kwan, Hock Thye Law
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Publication number: 20090268724Abstract: 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 30, 2009Publication date: October 29, 2009Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Patent number: 7606164Abstract: A process (111,101) of sending packets of real-time information at a sender (311) includes initially generating packets of real-time information with a source rate (s11) greater than zero kilobits per second, and a time or path or combined time/path diversity rate (d11) initially being at least zero kilobits per second. Sending the packets results in a quality of service QoS, optionally measured at the sender (311). Rate/diversity adaptation decision may be performed at receiver (361?) instead. When the QoS is on an unacceptable side of a threshold of acceptability (Th1), the sender increases the diversity rate (d11 to d22) and sends not only additional ones of the packets of real-time information but also sends diversity packets at the increased diversity rate (d22). Increasing the diversity rate (d11 to d22) while either reducing or maintaining the overall transmission rate (sij+dij) is an important new improvement.Type: GrantFiled: March 31, 2004Date of Patent: October 20, 2009Assignee: Texas Instruments IncorporatedInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Patent number: 7577565Abstract: Packetized CELP-encoded speech playout with frame truncation during silence and frame expansion method dependent upon voicing classification with voiced frame expansion maintaining phasealignment.Type: GrantFiled: June 10, 2008Date of Patent: August 18, 2009Assignee: Texas Instruments IncorporatedInventors: Krishnasamy Anandakumar, Alan McCree, Erdal Paksoy
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Patent number: 7574351Abstract: 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: March 30, 2004Date of Patent: August 11, 2009Assignee: Texas Instruments IncorporatedInventors: Krishnasamy Anandakumar, Vishu R. Viswanathan, Alan V. McCree
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Publication number: 20080243495Abstract: Packetized CELP-encoded speech playout with frame truncation during silence and frame expansion method dependent upon voicing classification with voiced frame expansion maintaining phasealignment.Type: ApplicationFiled: June 10, 2008Publication date: October 2, 2008Inventors: Krishnasamy Anandakumar, Alan V. McCree, Erdal Paksoy
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Patent number: 7061912Abstract: An apparatus and methods for concealing missing packets in a CVSD bit stream are disclosed. In one embodiment, an indication from a packet loss indicator (PLI) that a packet is missing is received. Next the status of the missing packet is determined. Based on the status of the missing packet, a sample packet is generated to replace the missing packet, and a memory of the CVSD is updated. A compressed copy of the sample packet may be stored in a first memory buffer in either ?-law or a-law format.Type: GrantFiled: January 17, 2002Date of Patent: June 13, 2006Assignee: Microtune (San Diego) , Inc.Inventors: Krishnasamy Anandakumar, Jonathon Cheah
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Publication number: 20060039280Abstract: A process (111,101) of sending packets of real-time information at a sender (311) includes steps of initially generating at the sender the packets of real-time information with a source rate (s11) greater than zero kilobits per second, and a time or path or combined time/path diversity rate (d11), the amount of diversity (d11) initially being at least zero kilobits per second. The process sends the packets, thereby resulting in a quality of service QoS, and optionally obtains at the sender (311) a measure of the QoS. Rate/diversity adaptation decision may be performed at receiver (361?) instead. Another step compares the QoS with a threshold of acceptability (Th1), and when the QoS is on an unacceptable side of said threshold (Th1) increases the diversity rate (d11 to d22) and sends not only additional ones of the packets of real-time information but also sends diversity packets at the diversity rate as increased (d22).Type: ApplicationFiled: July 6, 2004Publication date: February 23, 2006Inventors: Krishnasamy Anandakumar, Vishu Viswanathan, Alan McCree
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Publication number: 20060035590Abstract: A computing system wherein communication between a host computer and peripheral units, e.g. computer mouse and keyboard, is performed using RF signals. The host computer and the peripheral units each contain a transceiver for managing and transmitting the RF communication messages. An acknowledgement is sent by the receiving transceiver to the sending transceiver to signify that the message was successfully received. If no acknowledgement is received by the sending transceiver, a subsequent RF communication message is sent until an acknowledgement is received. A sleep mode is invoked between messages to conserve battery power in the peripheral units, and the peripheral units send a report message to the host when awaking periodically, or by a user demand, from the sleep mode signifying that the peripheral unit is active and ready to send or receive messages.Type: ApplicationFiled: March 16, 2005Publication date: February 16, 2006Inventors: Martin Morris, Krishnasamy Anandakumar, Suresh Singamsetty, Dennis Chung Kwan, Hock Law
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Publication number: 20050254647Abstract: A wireless interface device for a keyboard of a computer system is achieved. The device comprises a radio transmitter and receiver. A modem encodes data to be sent by the radio transmitter and decodes data received by the radio receiver. A central processing unit is included. A direct signal connection is provided between the wireless interface circuit and a keyboard. A baseband circuit encrypts data to be transmitted and decrypts received data. The wireless interface device has built-in scanning and decoding functions for an input device such as a keyboard or a mouse. The wireless interface device has power saving functions to extend the battery life of the input device. The wireless interface device has the capability of automatically selecting between several communication frequencies or channels. The wireless interface device has the capability of automatically selecting between several data rates.Type: ApplicationFiled: March 16, 2005Publication date: November 17, 2005Inventors: Krishnasamy Anandakumar, Martin Morris, Suresh Singamsetty, Dennis Chung Kwan, Hock Law
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Publication number: 20050243059Abstract: A computing system wherein communication between a host computer and peripheral units, e.g. computer mouse and keyboard, is performed using RF signals. The host computer and the peripheral units each contain a transceiver for managing and transmitting the RF communication messages. An acknowledgement is sent by the receiving transceiver to the sending transceiver to signify that the message was successfully received. If no acknowledgement is received by the sending transceiver, a subsequent RF communication message is sent until an acknowledgement is received. A sleep mode is invoked between messages to conserve battery power in the peripheral units, and the peripheral units send a report message to the host when awaking periodically, or by a user demand, from the sleep mode signifying that the peripheral unit is active and ready to send or receive messages.Type: ApplicationFiled: March 16, 2005Publication date: November 3, 2005Inventors: Martin Morris, Krishnasamy Anandakumar, Suresh Singamsetty, Dennis Chung Kwan, Hock Law
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Publication number: 20050243058Abstract: A computing system wherein communication between a host computer and peripheral units, e.g. computer mouse and keyboard, is performed using RF signals. The host computer and the peripheral units each contain a transceiver for managing and transmitting the RF communication messages. An acknowledgement is sent by the receiving transceiver to the sending transceiver to signify that the message was successfully received. If no acknowledgement is received by the sending transceiver, a subsequent RF communication message is sent until an acknowledgement is received. A sleep mode is invoked between messages to conserve battery power in the peripheral units, and the peripheral units send a report message to the host when awaking periodically, or by a user demand, from the sleep mode signifying that the peripheral unit is active and ready to send or receive messages.Type: ApplicationFiled: March 16, 2005Publication date: November 3, 2005Inventors: Martin Morris, Krishnasamy Anandakumar, Suresh Singamsetty, Dennis Chung Kwan, Hock Law