Texas Instruments Corporation

Other

Edward N George

David Alston Lide

Erhan Guven

David Alan Boas

David Borsook

Frank Fruth

Lino Becerra

Satish Kumar M Mundra

Satish Mundra

A method for recognizing awareness in a subject includes performing optical imaging on at least one cortical region of the brain of the subject. Optical imaging data are obtained over time measuring one or more hemodynamic parameters in the at least one cortical region of the subject's brain. An observed variation pattern is determined in the measured hemodynamic parameters, and the observed variation pattern is compared to one or more known variation patterns characteristic of awareness. Substantial similarity between the observed and known variation patterns signals awareness in the subject.

Recognizing awareness in an anesthetized subject

Minimized Wave-zone Buoyancy is a new approach to oil and gas platform design with superior construction and performance characteristics compared to state-of-art off-shore drilling and production platforms. Minimized Wave-zone Buoyancy platforms capitalize on low cross sectional area of the portion of the platform exposed to waves. The low cross sectional area reduces buoyancy forces that result from vertical platform movement, enabling the platform to oscillate at a low natural frequency. The low cross sectional area also minimizes the cyclical vertical forces induced by waves. Compare to current designs, application of the Minimized Wave-zone Buoyancy concept will result in a lower natural frequency of oscillation, lower overall weight of platform, or both. Minimized Wave-zone Buoyancy offers an attractive alternative with improved platform stability, fatigue considerations, lower construction and installation costs, and shorter implementation schedule.

Modem relay protocol redundancy for reliable low speed modem communications over IP networks with substantial packet loss

The invention teaches elimination of the need for allocating a telephony port or equivalent processor resource for realtime facsimile transmission through a broadband access gateway by replacing a fax modem or analog fax machine with a computer system having a network connection to the gateway. A software application on the computer uses a serial port redirector that provides a virtual communication port for facsimile software applications that would otherwise use a fax modem on a computer. The port redirector captures fax data sent to a serial communication port on the computer and sends it to the virtual fax module on the gateway. The gateway has a virtual fax software application associated which emulates a Class 1 or Class 2 fax modem interface from the client-side PC. The gateway uses a codec to convert fax data into ITU T.38 standards for 'Procedures for real-time Group 3 facsimile communication over IP networks'. Packetized T.38 facsimile data is then transmitted to a far-end gateway that may be located at a central office (CO) of a telephone company or other network. The elimination of a telephony port in the gateway allows for the simplified approach to sending and receiving fax over IP networks by reducing the processing complexity in the system and frees up telephony resources in the gateway device.

Real time fax-over-packet for broadband access gateways

A system to enable TTY communication between a legacy TTY phone and an IP phone over a packet network using a TTY relay protocol established between the IP phone and a media gateway at a central office of the PSTN. The system may also use a voice over Internet Protocol gateway to connect a personal computer to the packet network instead of an IP phone to accomplish TTY communication between software on the computer and a legacy TTY phone.

TTY communication over packet networks

Modem relay provides a local interface to the modem on both ends of a call, demodulates the full duplex data stream, packetizes the bits for transport over an IP network, and remodulates the data stream at the remote end. It is advantageous to measure the throughput efficiency of the modem relay. The modem relay provides bandwidth savings, and resistance to network packet loss. However, the resistence is often accomplished by redundancy techniques which can reduce effective throughput rates. Because the modem data stream can be transported in a redundant fashion, which allows for seamless error recovery in the event of single or double packet loss events, lost packet recovery minimizes computational requirements and provides for recovery of lost packets during burst loss of a series of sequential packets. The present invention teaches a system and method for determining the throughput of various modem relay implementations. Design parameters can be manipulated to effectuate desired implementations within the operational characteristics of a packet network.

Method to measure throughput efficiency of low speed modem relay over packet network

A modem relay provides a local interface to the a modem on both ends of a call, demodulates the full duplex data stream, packetizes the bits for transport over an IP network, and remodulates the data stream at the remote end. The modem relay negotiates a best supported rate and modulation. If no common rate and modulation is supported by the modems at each end of the communication, the modem relay components will establish independent connections to the modems at each end and transmit information across the packet network. The modem data stream can also be transported in a redundant fashion, which allows for seamless error recovery in the event of single or double packet loss events. Since the data stream can be completely recovered after packet loss, the remote modem is able to recreate the local modem's transmission exactly.

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Germantown, MD, United States of America

Edward N George