David E Farrell

US Patent:

6377825, Apr 23, 2002

Filed:

Feb 18, 2000

Appl. No.:

09/507175

Inventors:

Patrick J. Kennedy - Boulder CO
Ralph C. Poplawsky - Littleton CO
Charles W. Spaur - Aurora CO
Michael B. Durian - Boulder CO
David J. Farrell - Louisville CO

Assignee:

Cellport Systems, Inc. - Boulder CO

International Classification:

H04B 138

US Classification:

455569, 455563, 455557, 455 90, 455556

Abstract:

Wireless communications relative to a vehicle using a wireless communications device, a pocket for holding the wireless communication device and an interface module in communication with the pocket are provided. The pocket can include a processor for translating communications between the wireless communications device and the interface module. The interface module has processing capability and can communicate with different pockets and thereby different wireless communications devices. In at least one embodiment, the interface module manages voice recognition and text-to-speech commands to facilitate hands-free communications in the vehicle. The interface module can function as a communications hub involving a number of vehicle subsystems. In a preferred embodiment, the vehicle subsystems are separately addressable using the interface module and/or other processing hardware/software. However, in communicating over the Internet, a vehicle IP address is utilized.

US Patent:

6516063, Feb 4, 2003

Filed:

Mar 24, 2000

Appl. No.:

09/535305

Inventors:

David S. Farrell - Lisle IL
Tianfang Liu - De Kalb IL

Assignee:

Tellabs Operations, Inc. - Naperville IL

International Classification:

H04M 908

US Classification:

37940608, 37940601

Abstract:

A non-linear processor for use in an echo canceller is set forth. The non-linear processor includes a center clipping digital filter receiving an echo compensated signal. The non-linear processor provides a center clipped output signal having non-linear thresholds at values of +T and -T. The value of T is dynamically dependent, at least in part, on echo return loss measurements. To limit the processors susceptibility to corruption from double-talk conditions, the non-linear processor inhibits the dynamic setting of the T value when a double-talk condition is present. Additionally, or in the alternative, the non-linear processor locks the value of the echo return loss measurement after a predetermined number of consecutive echo return loss measurements have values falling within a predetermined range of one another. Such locking further reduces the susceptibility of the non-linear processor to corruption from double-talk conditions.

US Patent:

7020278, Mar 28, 2006

Filed:

Oct 15, 2002

Appl. No.:

10/271189

Inventors:

David S. Farrell - Lisle IL, US
Tianfang Liu - De Kalb IL, US

Assignee:

Tellabs Operations, Inc. - Naperville IL

International Classification:

H04M 1/00

US Classification:

37940605, 37940601, 37940604, 37940608

Abstract:

A non-linear processor for use in an echo canceller is set forth. The non-linear processor includes a center clipping digital filter receiving an echo compensated signal. The non-linear processor provides a center clipped output signal having non-linear thresholds at values of +Tand −T. The value of Tis dynamically dependent, at least in part, on echo return loss measurements. To limit the processor's susceptibility to corruption from double-talk conditions, the non-linear processor inhibits the dynamic setting of the Tvalue when a double-talk condition is present. Additionally, or in the alternative, the non-linear processor locks the value of the echo return loss measurement after a predetermined number of consecutive echo return loss measurements have values falling within a predetermined range of one another. Such locking further reduces the susceptibility of the non-linear processor to corruption from double-talk conditions.

US Patent:

7298671, Nov 20, 2007

Filed:

Apr 28, 2005

Appl. No.:

11/118104

Inventors:

Russell B. Brinkmann - Louisville CO, US
Scott K. Burkholder - Littleton CO, US
Christopher Bruce Crosby - Firestone CO, US
David Jon Farrell - Louisville CO, US
Paul D. Favret - Littleton CO, US
Todd J. Fockler - Golden CO, US
Aaron Stafford Oakley - Boulder CO, US
Robert Stewart - Boulder CO, US
James Muir Drummond - Houston TX, US

Assignee:

Ascend Geo, LLC - Denver CO

International Classification:

G01V 1/22

US Classification:

367 77, 367 76

Abstract:

A self-contained data acquisition unit is provided for acquiring seismic data. The unit has a microprocessor and an antenna adapted to receive an electromagnetic signal. A decoder is connected with the microprocessor and adapted to convert received electromagnetic signals to dual-tone multiple-frequency (“DTMF”) digits. A geophone interface is provided with a geophone for collecting acoustic data incident on the geophone. A memory is connected with the geophone interface for storing a representation of the collected acoustic data and for storing a representation of a reference electromagnetic signal to be used in synchronizing acoustic data collected by other data acquisition units. A battery power source is connected with the microprocessor.

US Patent:

7450714, Nov 11, 2008

Filed:

Jan 19, 2006

Appl. No.:

11/336348

Inventors:

David S. Farrell - Lisle IL, US
Tianfang Liu - De Kalb IL, US

Assignee:

Tellabs Operations, Inc. - Naperville IL

International Classification:

H04M /08

US Classification:

37940605, 37940602

Abstract:

A non-linear processor for use in an echo canceller is set forth. The non-linear processor includes a center clipping digital filter receiving an echo compensated signal. The non-linear processor provides a center clipped output signal having non-linear thresholds at values of +Tand −T. The value of Tis dynamically dependent, at least in part, on echo return loss measurements. To limit the processor's susceptibility to corruption from double-talk conditions, the non-linear processor inhibits the dynamic setting of the Tvalue when a double-talk condition is present. Additionally, or in the alternative, the non-linear processor locks the value of the echo return loss measurement after a predetermined number of consecutive echo return loss measurements have values falling within a predetermined range of one another. Such locking further reduces the susceptibility of the non-linear processor to corruption from double-talk conditions.

US Patent:

20060009911, Jan 12, 2006

Filed:

Apr 28, 2005

Appl. No.:

11/118068

Inventors:

Scott Burkholder - Littleton CO, US
David Farrell - Louisville CO, US
Paul Favret - Littleton CO, US
Todd Fockler - Golden CO, US
Aaron Oakley - Boulder CO, US
Robert Stewart - Boulder CO, US
Zachary Zuppas - Superior CO, US
James Drummond - Houston TX, US

Assignee:

Ascend Geo, LLC - Denver CO

International Classification:

G06F 19/00

US Classification:

702018000

Abstract:

Methods and systems are provided for acquiring seismic data. An ambient electromagnetic signal having a known time dependence is transmitted for propagation within a survey area. The ambient electromagnetic signal is received at distinct geographic locations with independently operating data acquisition units positioned at the distinct locations. Data representing acoustic signals received from the Earth at the distinct geographic locations are collected with the data acquisition units. The collected acoustic signals for the distinct geographic locations are synchronized by correlating the known time dependence of the propagated electromagnetic signal with time dependencies of the collected acoustic signals.

US Patent:

20060041200, Feb 23, 2006

Filed:

Jun 4, 2004

Appl. No.:

10/862093

Inventors:

James Dotter - Boulder CO, US
David Farrell - Louisville CO, US
James Gilbert - Boulder CO, US

International Classification:

A61B 5/02

US Classification:

600502000

Abstract:

A heart rate monitoring system for use in sport and fitness training that includes a sensor belt worn on the waist of the user and a display device worn on the wrist of the user. The sensor belt has a pair of sensors that can be located on opposite sides of the body in various locations, such as near the kidneys, near the ilium bones in the pelvis, or on the front abdominal area of the user. Various signal processing techniques are employed to extract the degraded signal that is available at the waist area as compared to the chest area. These signal-processing techniques include bandpass filtering, an adaptive time window, a delayed transmission to allow for correction methods such as missed beat replacement and extra beat deletion, a lead off detection and adjustment algorithm, automatically adjustable gain control, and waveform detection and characterization.

US Patent:

20100100330, Apr 22, 2010

Filed:

Sep 15, 2009

Appl. No.:

12/560323

Inventors:

Scott K. Burkholder - Littleton CO, US
David Jon Farrell - Louisville CO, US
Paul D. Favret - Littleton CO, US
Todd J. Fockler - Golden CO, US
Aaron Stafford Oakley - Boulder CO, US
Robert Stewart - Boulder CO, US
Zachary Alexander James Zuppas - Superior CO, US
James Muir Drummond - Houston TX, US

Assignee:

Ascend Geo, LLC - Golden CO

International Classification:

G01V 1/24
G01V 1/28

US Classification:

702 14

Abstract:

Methods and systems are provided for acquiring seismic data. An ambient electromagnetic signal having a known time dependence is transmitted for propagation within a survey area. The ambient electromagnetic signal is received at distinct geographic locations with independently operating data acquisition units positioned at the distinct locations. Data representing acoustic signals received from the Earth at the distinct geographic locations are collected with the data acquisition units. The collected acoustic signals for the distinct geographic locations are synchronized by correlating the known time dependence of the propagated electromagnetic signal with time dependencies of the collected acoustic signals.