James C 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:

39774295, Aug 31, 1976

Filed:

Oct 10, 1974

Appl. No.:

5/513867

Inventors:

James S. Stevenson - Oakland CA

International Classification:

B65H 7534

US Classification:

13735527

Abstract:

Spray equipment of lightweight primarily adapted for mobile installation and including means for mixing spray solution during spraying and in response to flow of water into a spray tank. The equipment features a lightweight spray tank, mixing device, and novel hose reel features.

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:

39711960, Jul 27, 1976

Filed:

Dec 16, 1974

Appl. No.:

5/533008

Inventors:

James S. Stevenson - Oakland CA

International Classification:

A01D 35262

US Classification:

56 171

Abstract:

A power mower in which the mower is adjustably suspended as to elevation between a pair of large diameter wheels of the bicycle type, whereby the power mower is not only of light weight but is easily maneuverable, capable of a wide range of height adjustments, and capable of not only trimming ground cover but also cutting weeds which may be growing through ground cover.

US Patent:

42457602, Jan 20, 1981

Filed:

May 8, 1978

Appl. No.:

5/903864

Inventors:

James S. Stevenson - Oakland CA
John J. Rodrigues - Orinda CA

Assignee:

Terminator Products, Inc. - Oakland CA

International Classification:

B67D 108

US Classification:

222148

Abstract:

A container for holding and from which chemicals are capable of being selectively dispensed either by hand pouring or by means of a closed system, such container having a built-in probe assembly involving a recessed area in one wall, the recessed area having a central opening to receive a probe, and openings about said central opening, for discharge of the container contents when hand pouring, and a closure for sealing the recessed area for shipping of the container and its contents.