James M Stevenson

US Patent:

6546256, Apr 8, 2003

Filed:

Feb 1, 1999

Appl. No.:

09/240889

Inventors:

John E. Maloney - Springfield VA
James O. Stevenson - Fairfax VA

Assignee:

KSI Inc. - King of Prussia PA

International Classification:

H04Q 720

US Classification:

455456, 455422, 342450

Abstract:

Replica correlation processing, and associated representative signal-data reduction and reconstruction techniques, are used to detect signals of interest and obtain robust measures of received-signal parameters, such as time differences of signal arrival and directional angles of arrival, that can be used to estimate the location of a cellularized-communications signal source. The new use in the present invention of signal-correlation processing for locating communications transmitters. This enables accurate and efficient extraction of parameters for a particular signal even in a frequency band that contains multiple received transmissions, such as occurs with code-division-multiple-access (CDMA) communications. Correlation processing as disclosed herein further enables extended processing integration times to facilitate the effective detection of desired communications-signal effects and replication measurement of their location-related parameters, even for the communications signals modulated to convey voice conversations or those weakened through propagation effects. Using prior, constructed, signal replicas in the correlation processing enables elimination of the inter-site communications of the signal representations that support the correlation analyses.

US Patent:

7340259, Mar 4, 2008

Filed:

Jan 17, 2003

Appl. No.:

10/347471

Inventors:

John E. Maloney - Springfield VA, US
James O. Stevenson - Fairfax VA, US

Assignee:

KSI Inc. - Annandale VA

International Classification:

H04Q 7/20

US Classification:

4554561, 4554562, 4554565, 4554566, 455515

Abstract:

Replica correlation processing, and associated representative signal-data reduction and reconstruction techniques, are used to detect signals of interest and obtain robust measures of received-signal parameters, such as time differences of signal arrival and directional angles of arrival, that can be used to estimate the location of a cellularized-communications signal source. The new use in the present invention of signal-correlation processing for locating communications transmitters. This enables accurate and efficient extraction of parameters for a particular signal even in a frequency band that contains multiple received transmissions, such as occurs with code-division-multiple-access (CDMA) communications. Correlation processing as disclosed herein further enables extended processing integration times to facilitate the effective detection of desired communications-signal effects and replication measurement of their location-related parameters, even for the communications signals modulated to convey voice conversations or those weakened through propagation effects. Using prior, constructed, signal replicas in the correlation processing enables elimination of the inter-site communications of the signal representations that support the correlation analyses.

US Patent:

20080161015, Jul 3, 2008

Filed:

Jan 2, 2008

Appl. No.:

11/968592

Inventors:

John E. Maloney - Springfield VA, US
James O. Stevenson - Fairfax VA, US

Assignee:

TruePosition, Inc. - Berwyn PA

International Classification:

H04Q 7/20

US Classification:

4554561

Abstract:

Replica correlation processing, and associated representative signal-data reduction and reconstruction techniques, are used to detect signals of interest and obtain robust measures of received-signal parameters, such as time differences of signal arrival and directional angles of arrival, that can be used to estimate the location of a cellularized-communications signal source. The new use in the present invention of signal-correlation processing for locating communications transmitters. This enables accurate and efficient extraction of parameters for a particular signal even in a frequency band that contains multiple received transmissions, such as occurs with code-division-multiple-access (CDMA) communications. Correlation processing as disclosed herein further enables extended processing integration times to facilitate the effective detection of desired communications-signal effects and replication measurement of their location-related parameters, even for the communications signals modulated to convey voice conversations or those weakened through propagation effects. Using prior, constructed, signal replicas in the correlation processing enables elimination of the inter-site communications of the signal representations that support the correlation analyses. Reduced-data representations of the modulated signals for voiced conversation, or for the variable components of data communications, are used to significantly reduce the inter-site communications that support the correlation analyses.

US Patent:

20130308260, Nov 21, 2013

Filed:

May 17, 2012

Appl. No.:

13/473948

Inventors:

James P. STEVENSON - Montgomery Village MD, US

International Classification:

H05K 7/00
G06F 1/16

US Classification:

3616793, 36167901, 36167956

Abstract:

A smoke-free viewing apparatus that comprises an expandable enclosure that is expandable between a collapsed position and an expanded position. The expandable enclosure defines a smoke-free interior area when in the expanded position. The expandable enclosure has at least one transparent section that allows viewing in the smoke-free interior area. An electronic device is disposed in the smoke-free interior area of the expandable enclosure. The electronic device has a display, wherein the display of the electronic device is viewable through the at least one transparent section from outside of the expandable enclosure.

US Patent:

60471921, Apr 4, 2000

Filed:

May 13, 1997

Appl. No.:

8/855589

Inventors:

John E. Maloney - Springfield VA
James O. Stevenson - Fairfax VA

Assignee:

KSI Inc. - Annandale VA

International Classification:

H04Q 720

US Classification:

455456

Abstract:

Replica correlation processing, and associated representative signal-data reduction and reconstruction techniques, are used to detect signals of interest and obtain robust measures of received-signal parameters, such as time differences of signal arrival and directional angles of arrival, that can be used to estimate the location of a cellularized-communications signal source. The new use in the present invention of signal-correlation processing for locating communications transmitters. This enables accurate and efficient extraction of parameters for a particular signal even in a frequency band that contains multiple received transmissions, such as occurs with code-division-multiple-access (CDMA) communications. Correlation processing as disclosed herein further enables extended processing integration times to facilitate the effective detection of desired communications-signal effects and replication measurement of their location-related parameters, even for the communications signals modulated to convey voice conversations or those weakened through propagation effects. Using prior, constructed, signal replicas in the correlation processing enables elimination of the inter-site communications of the signal representations that support the correlation analyses.

US Patent:

61085553, Aug 22, 2000

Filed:

Dec 26, 1996

Appl. No.:

8/772871

Inventors:

John E. Maloney - Springfield VA
Charles J. Hinkle - Vienna VA
James O. Stevenson - Fairfax VA

Assignee:

KSI, Inc. - Annandale VA

International Classification:

H04B 700

US Classification:

455456

Abstract:

A method and apparatus for locating a mobile radio communications transceiver in a cellular-telephone or cellular-like communications system use a simplified system for passive monitoring of the signals emitted by the transceiver. Two receiving base stations can determine the timing of signal arrivals from the remote transceiver. This timing information is then combined with collateral, position-sensitive information to determine the likely location of the transceiver. The present invention has particular applicability to roadway transportation in that it facilitates enhanced emergency services and roadside assistance in response to calls for assistance, and it permits the passive monitoring of traffic flow.

US Patent:

61190136, Sep 12, 2000

Filed:

Feb 16, 1999

Appl. No.:

9/250391

Inventors:

John E. Maloney - Springfield VA
Charles J. Hinkle - Vienna VA
James O. Stevenson - Fairfax VA

Assignee:

KSI, Inc. - Annandale VA

International Classification:

H04B 700

US Classification:

455456

Abstract:

A system and method for locating a mobile transceiver relative to plural fixed sensor stations. The system includes plural sensor stations that receive a signal transmitted by the mobile transceiver. A probable position of the mobile transceiver is determined based on a time of arrival of the signal and an angle of arrival of the signal received at the plural sensor stations.

US Patent:

59595809, Sep 28, 1999

Filed:

Nov 3, 1994

Appl. No.:

8/335331

Inventors:

John E. Maloney - Springfield VA
Charles J. Hinkle - Vienna VA
James O. Stevenson - Fairfax VA

Assignee:

KSI Inc. - Annandale VA

International Classification:

G01S 302

US Classification:

342457

Abstract:

A method and apparatus for locating a mobile radio communications transceiver in a cellular-telephone or cell-like communications system uses a simplified system for passive monitoring of the signals emitted by the transceiver. A single base station can determine a line of bearing to the remote transceiver. This line of bearing is then combined with collateral, position-sensitive information to determine the likely location of the transceiver. The present invention has particular applicability to roadway transportation in that it facilitates enhanced emergency (9-1-1) services and roadside assistance in response to calls for assistance, and it permits the passive monitoring of traffic flow.

Address:

6911 Mumford St, Clinton, MD 20735

VIN:

1FMFK17587LA09450

Make:

FORD

Model:

EXPEDITION EL

Year:

2007