Witten Technologies Inc.

Seknion, Inc.

Westerngeco L.l.p.

Westerngreco L.l.c.

Michael L Oristaglio

Thorkild Hansen

Douglas E Miller

Ralf Birken

Paul Albats, Jr

Jakob Haldorsen

Macyln Burns

Anthony DeRubeis

Tarek M Habashy

David Lee Alumbaugh

Cliff Evans

Kambiz A Safinya

Guozhong Gao

Andrea Zerilli

Ross Deming

Mark Dalton

H Frank Morrison

Frank Morrison

Scott MacIntosh

Robert Casadonte

Robert G Green

To perform marine electromagnetic (EM) surveying of a subterranean structure, a marine cable system is provided including a tow cable, a plurality of electromagnetic (EM) sources coupled to the tow cable, and a plurality of EM receivers coupled to the tow cable. The system is configured for deployment in a body of water to perform marine EM surveying of a subterranean structure.

Providing a tow cable having plural electromagnetic receivers and one or more electromagnetic sources

Security in inductively coupled communications systems, such as near field communications (NFC), may be improved by restricting signals carrying user data to an authorized data transmission region. Security may be particularly important when the NFC carries financial transaction information or authorization credentials. Scramble signals may be transmitted along with data signals carrying the user data and designed to overshadow the data signals outside of the authorized data transmission region. The scramble signal transceiver may be designed to have a slower decay rate with distance from the transceiver than the data signal. By adjusting the power levels of the scramble signal and the data signal, the authorized data transmission region may be adjusted. Scramble signals may not be required if the data signal strength outside the authorized data transmission region is below the minimum threshold value required by eavesdropping receivers.

Secure inductively-coupled communications systems

The present invention relates to an apparatus and method for preventing unauthorized users from gaining access to a wireless network. A processor allows only data transmissions from the directions of the authorized users to access the network. Data transmissions from other directions are not allowed to access the network. The present invention also relates to a method and apparatus fore transmitting information only in selected directions, while in directions not selected, information cannot be inferred from the transmitted signal or signals.

Method and apparatus for security in a wireless network

A method and apparatus for transmitting a narrow signal beam are disclosed that allow the precise location of RFID tags to be determined and reduce tag collisions. Also disclosed are a method and apparatus for improving the efficiency of RFID systems.

Method and apparatus for improving the efficiency and accuracy of RFID systems

A ground penetrating antenna apparatus and method are provided for locating underground objects via radar, sonar, or similar methods. The apparatus includes one or more antennas that are rotatably affixed to support extensions that also rotate, but about an axis that is different from each of the antenna axes. The apparatus includes a linear propulsion mechanism, and the support extensions may be coupled to the linear propulsion mechanism via a transmission mechanism. In one embodiment, the supporting extensions rotate at a constant rate and each antenna rotates at that same constant rate but in the opposite direction.

Multiple-axis linearly-propelled rotating sensor apparatus

A method and apparatus locates buried objects in conductive soil by creating a direct current in a transmitting loop, periodically terminating the direct current in the transmitting loop to create an eddy current in the conductive soil using time domain induction, receiving a magnetic field resulting from the eddy current running through the conductive soil, and locating the buried object using the received magnetic field.

Time domain induction method and apparatus for locating buried objects in a medium by inducing and measuring transient eddy currents

An apparatus and method for combining a survey measurement dataset and a position dataset into a single dataset containing both measurement and position data is disclosed. The survey measurement data may be obtained from a ground penetrating radar, an inductometer, a magnetometer, or an optical camera. Positioning information is collected and merged with the survey information so that the position of the survey tool is known at each data point. Also provided are channel-equalization filters, spiking deconvolution filters, and frame filters that can be used in conjunction with the positioning information to enhance the quality of the images obtained from the data collected by the survey tool.

Method for merging position information with measurements and filtering to obtain high-quality images that are positioned accurately with respect to global coordinates

We describe a system for displaying buried utilities to the operator of an excavator. The display is based on 3D images of the subsurface obtained from advanced locating methods. As the excavator moves, the display changes so that it remains centered on the region near the bucket where the buried pipes are in danger of being broken.

Virtual camera on the bucket of an excavator displaying 3D images of buried pipes

An apparatus for locating a target object using parametric inversion employs a signal injector capable of injecting a signal into the target object, wherein at least a portion of the target object is buried, a magnetic field receiver, a matching processor for matching to a magnetic field received by the magnetic field receiver a parametric magnetic field distribution model corresponding to the target object and at least one other object, and a locating processor for locating the target object using parameters from the parametric magnetic field distribution model. A method for locating a target object using parametric inversion injects a signal into the target object, at least a portion of which is buried, receives a magnetic field radiated from the target object, matches to the received magnetic field a parametric magnetic field distribution model corresponding to the target object and at least one other object, and locates the target object using parameters from the parametric magnetic field distribution model.

Method and apparatus for locating objects using parametric inversion

A method and apparatus for detecting and locating leaks in buried pipes is disclosed in which ground penetrating radar, induction, acoustic, and vacuum excavation systems are selected based on soil conditions and then employed in selected combinations. The conductivity and wave speed of the soil are used in the selection process and in the process of detecting and locating a leak based on the measurements obtained from the selected combination of detection systems.

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Newtown, CT, United States of America

Michael L Oristaglio