Schlumberger Technology Corporation

Utc Fire & Security Americas Corporation, Inc.

Gemalto Inc.

Utc Fire and Security Corporation

Anshuman Sinha

Michael Andrew Montgomery

Peter T Wu

Shu-Kong Chang

Alain M Dumont

Pierre Henri Campanac

Khalil W Yacoub

Danny N Kumamoto

James G L Thompson

Methods for compression of sonic log data include STC processing, sorting peak components in the sonic data; filtering the sorted peak components to remove high-frequency portions in the peak components; and decimating the filtered peak components according to a selected ratio to produce compressed data. One method for telemetry transmission of downhole sonic log data includes sorting peak components in the sonic log data; compressing the sorted peak components to produce compressed data; packing the compressed data to produce data packets for telemetry transmission; and sending the data packets using telemetry.

Methods and systems for compressing sonic log data

An improved physical access control system has an online portion and an offline portion. A smartcard is configurable to transport access control information between the online portion and offline portion. The smartcard is further configurable to receive an offline reader identifier from an offline reader, and to control access of the smartcard holder to an offline entry/exit point. The smartcard is further configurable to carry a revoked list that is transmitted to each offline reader accessed. Methods of operating the improved physical access control system are also disclosed.

Physical access control system with smartcard and methods of operating

A smart card which includes a non-volatile read/write memory and a processor connected to the memory, and further configured to cause the processor to perform a method for enhancing data security and managing the contents of memory during periods when the computational power of the processor is underutilized. The method includes steps for determining if a command or character has been received, processing and/or responding to the command or character once received, implementing a security measure and/or managing memory, and performing a tamper protocol in response to detecting a security breach, all of which is performed while waiting to receive the next command or character.

Enhancing data integrity and security in a processor-based system

A method for distributed processing in a subsurface environment includes running a local program on a local computation unit, wherein the local program is configured to call a remote procedure to be executed by a remote computation unit, wherein the local computation unit and the remote computation unit are disposed in a subsurface environment; initiating a remote procedure call; executing the remote procedure on the remote computation unit, while the local computation unit performs another operation; and returning a result from the executing the remote procedure to the local computation unit.

Distributed processing system for subsurface operations

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Boca Raton, FL, United States of America

Anshuman Sinha