Texas Instruments Corporation

Vishu R Viswanathan

Alan V McCree

Krishnasamy Anandakumar

Alan Gatherer

Stephen J Perkins

Wai-Ming Lai

Levent M Arslan

Krishanasamy Anandakumar

Lorin Paul Netsch

Kaisheng N Yao

Basavaraj I Pawate

Sang G Oh

Wilfrid P LeBlanc

Michael W Macon

E Bryan George

Wallace Anderson

Christine N Liu

Rabin Deka

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.

Proxy pair identification communication though separate proxy devices and paths

An IC processor circuit has an interface for a microphone and a packet switched network. A memory holds bits for converting audible speech from the microphone into digital data in each of successive frames. For each frame the converting includes forming LPC data, LTP lag data, parity check data, adaptive and fixed codebook gain data, and fixed codebook pulse data. The digital data representing the audible speech for the frames is placed into sequential packets, with each packet having a primary stage and a secondary stage. The placing includes arranging data from a first frame of speech in the primary stage of a first packet and arranging data from the first frame of speech in the secondary stage of a second packet, which follows the first packet. The data in the secondary stage includes only LPC data, LTP lag data, parity check data, and adaptive and fixed codebook gain data.

Wireless telephone sending speech data in second packet secondary stage

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.

Source and diversity rate equal to a first transmission rate

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&#x2212;1)', [Lost Packet], P(n+2)P(n+1)&#x2032;, and P(n+3)P(n+2)&#x2032;, 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.

IC processor reconstucting two consecutive lost packets from secondary information

In one form of the invention, a process of sending real-time information from a sender computer () to a receiver computer () coupled to the sender computer () by a packet network () wherein packets () sometimes become lost, includes steps of directing () packets () containing the real-time information from the sender computer () by at least one path () in the packet network () to the receiver computer (), and directing packets () containing information dependent on the real-time information from the sender computer () by at least one path diversity path () in the packet network () to the same receiver computer (). Other forms of the invention encompass other processes, improved packets and packet ensembles (), integrated circuits (), chipsets (DSP, MCU), computer cards (), information storage articles (), systems, computers (), gateways (), routers (), cellular telephone handsets (), wireless base stations (), appliances (), and packet networks (), and other forms as disclosed and claimed.

IC generating packets containing destination, first, and second proxy addresses

IC coding speech into primary and secondary stages of packets

Sending speech packets with same and complementary subsets of fixed codebook pulses

Source and diversity rate less than a first transmission rate

Media packet networking appliance sending diversity packets to second proxy

Sending packets of CELP and important information from an IC

An acoustic noise suppression filter including attenuation filtering with a noise-free estimate based on a codebook of line spectral frequencies.

Adaptive Weiner filtering using line spectral frequencies

IC reconstructing lost speech packets from secondary stage partial data

Rate/diversity adaptation sending speech in first and second packets

Automatic speech recognition verification using a combination of two or more confidence scores based on UV features which reuse computations of the original recognition.

Multiplying confidence scores for utterance verification in a mobile telephone

In one form of the invention, a process of sending real-time information from a sender computer () to a receiver computer () coupled to the sender computer () by a packet network () wherein packets () sometimes become lost, includes steps of directing () packets () containing the real-time information from the sender computer () by at least one path () in the packet network () to the receiver computer (), and directing packets () containing information dependent on the real-time information from the sender computer () by at least one path diversity path () in the packet network () to the same receiver computer (). Other forms of the invention encompass other processes, improved packets and packet ensembles (), integrated circuits (), chipsets (DSPMCU), computer cards (), information storage articles (), systems, computers (), gateways (), routers (), cellular telephone handsets (), wireless base stations (), appliances (), and packet networks (), and other forms as disclosed and claimed.

Packet circuitry addressing independent and dependent information to different proxies

Growing community of inventors

Plano, TX, United States of America

Vishu R Viswanathan