Bart John Bombay

US Patent:

6778622, Aug 17, 2004

Filed:

Dec 18, 2000

Appl. No.:

09/739488

Inventors:

Bart John Bombay - Austin TX

Assignee:

Schlumberger Technology Corporation - Austin TX

International Classification:

H04L 2500

US Classification:

375371, 370516, 375355

Abstract:

A method and apparatus for estimating sample timing error in discrete multitone modulated signals. An unprocessed measured tone. The phase of the selected measured tone is adjusted using an average phase error. A normalized phase error for the selected measured tone is estimated. The average phase error is updated with the estimated phase error.

US Patent:

6999517, Feb 14, 2006

Filed:

Jun 7, 2000

Appl. No.:

09/590657

Inventors:

Bart J. Bombay - Austin TX, US

Assignee:

Sehlumberger Technology Corporation - Sugar Land TX

International Classification:

H04B 3/32
H04L 25/08

US Classification:

375257, 375222, 375229, 375346, 3403549, 370201, 370286

Abstract:

A digital telemetry system having improved data rate and robustness. The telemetry system has a data transmission cable having a first end and a second end, and is capable of transmitting data between the first and second end on at least two propagation modes. A data source connected at the first end has data transmission circuitry to generate data signals on these propagation modes. A receiver connected to the second end of the wireline cable has a first receive circuitry to receive signals on a first of the at least two propagation modes and a second receive circuitry to receive signals on a second of the at least two propagation modes. An adaptive far-end cross-talk cancellation circuitry connected to the first receive circuitry and to the second receive circuitry cancels out far-end cross-talk between the at least two propagation modes.

US Patent:

7701408, Apr 20, 2010

Filed:

Apr 1, 2005

Appl. No.:

11/629763

Inventors:

Bart Bombay - Austin TX, US
Neville Pattinson - Austin TX, US
Ksheerabdhi Krishna - Austin TX, US
Yves Reignoux - Montrouge, FR
Severine Cheramy - Montrouge, FR
Joseph Leibenguth - Montrouge, FR
Denis Groeninck - Montrouge, FR
Jean-Pierre Lafon - Montrouge, FR

Assignee:

Axalto SA - Meudon Cedex

International Classification:

H01Q 1/52

US Classification:

343841, 343700 MS, 343895

Abstract:

A document which includes a cover, one or more internal pages, a radiofrequency microcontroller, an antenna electrically connected to the radiofrequency microcontroller, an electromagnetic shield capable of partially disrupting wireless communication with the radiofrequency microcontroller when the document is closed, and not disrupting the wireless communication when the document is opened is described. The electromagnetic shield included in the document is implemented using metal, conductive plastic, conductive ink or magnetic ink.

US Patent:

7787525, Aug 31, 2010

Filed:

Dec 24, 1999

Appl. No.:

09/471659

Inventors:

Suzanne D. Richardson - Austin TX, US
Ramon Hernandez-Marti - Austin TX, US
Terry L. Mayhugh - Round Rock TX, US
Bart J. Bombay - Austin TX, US
John A. Booker - Austin TX, US
Gilbert R. Martinez - Georgetown TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

H04B 13/02

US Classification:

375218, 702 6, 702 7, 3408554

Abstract:

A wireline telemetry system and method of transmitting data on multiple carrier frequencies. The system and method adjust power level and number of bits-per-carrier to optimally or near-optimally utilize the capacity of the wireline cable. Due to the nature of wireline telemetry the overall power level is restricted only by the output capability of the downhole telemetry cartridge and the input power restrictions of the uphole telemetry unit receiver. The optimal power level is determined during a training sequence and is a function of such factors as cable length, cable material, cable temperature and cable geometry. The uplink and downlink transmission are executed using different modulation techniques.

US Patent:

8314828, Nov 20, 2012

Filed:

Oct 18, 2009

Appl. No.:

12/581151

Inventors:

Bart Bombay - Austin TX, US
Joseph Leibenguth - Saint-Cloud, FR
Jean-Luc Lesur - Bras, FR

Assignee:

Gemalto SA - Meudon

International Classification:

B41J 2/435
B41J 2/47

US Classification:

347262, 347225

Abstract:

Personalization of identity card by producing a color image thereon by selectively exposing photon-sensitive layers on the card to change between transparent and opaque thereby selectively revealing opaque colors from the photon-sensitive layer or from a printed substrate. Other systems and methods are disclosed.

US Patent:

8479011, Jul 2, 2013

Filed:

Oct 27, 2009

Appl. No.:

12/607047

Inventors:

Asad Mahboob Ali - Austin TX, US
Bart John Bombay - Austin TX, US
Ashish Malpani - Austin TX, US

Assignee:

Gemalto SA - Meudon

International Classification:

G06F 21/00

US Classification:

713185, 713182, 713189, 713193, 726 20

Abstract:

A method and system for providing authentication of a user to a first peripheral device connected to a host computer using an authentication of the user on a second peripheral device, thereby allowing the user access to both devices through a single authentication. A security function on the second peripheral device is used to create an authorization phrase. Subsequent accesses to the first peripheral device requires the second peripheral device to re-create the same authorization phrase thereby demonstrating that the same second peripheral device is being used to access the first peripheral device and that a user was successfully authenticated to the second peripheral device. Other systems and methods are disclosed.

US Patent:

8487828, Jul 16, 2013

Filed:

Feb 10, 2010

Appl. No.:

12/703556

Inventors:

Bart Bombay - Austin TX, US
Neville Pattinson - Austin TX, US
Ksheerabdhi Krishna - Austin TX, US
Jean-Pierre Lafon - Chatillon, FR
Joseph Leibenguth - Meudon Cedex, FR
Denis Groeninck - Meudon Cedex, FR
Yves Reignoux - Meudon Cedex, FR
Severine Cheramy - Meudon Cedex, FR

Assignee:

Gemalto, SA - Meudon Cedex

International Classification:

H01Q 1/52
H01Q 1/36

US Classification:

343841, 343895, 343700 MS, 343829, 343846, 235492

Abstract:

A document with a cover having a first cover part, a second cover part, at least one internal page located between the two cover parts when the document is closed, a radiofrequency microcontroller, an antenna electrically connected to the radiofrequency microcontroller, and an electromagnetic shield capable of disrupting, at least partially, the wireless communication with the radiofrequency microcontroller when the document is closed and not disrupting the wireless communication when the document is opened. The electromagnetic shield is a wire grid. The wire mesh distance between each two adjacent wires of the wire grid is smaller than a radio-frequency wavelength used for communicating with the radiofrequency microcontroller, and is at least 0. 1 millimeters and at most 40 millimeters.

US Patent:

20060095598, May 4, 2006

Filed:

Oct 30, 2004

Appl. No.:

10/978058

Inventors:

Sylvain Prevost - Austin TX, US
Bart Bombay - Austin TX, US

Assignee:

Axalto Inc. - Austin TX

International Classification:

G06F 3/00

US Classification:

710010000

Abstract:

A smart card having the capability during execution of an initialization process to allow concurrent processing of a second process consisting of distinct computational units having deadlines associated therewith and a method for operating such a smart card. The smart card has logic to initiate the second process and to execute a unit of the second process, logic to initiate the initialization process, logic to periodically pause the initialization process to allow the second process to process a computational unit before any required deadline for completing the computational unit, and logic to executing the second process processing a computational unit during the pauses of the initialization process.