CLINT ALFRED DAVIS
Pilots at Birch St, Bellaire, TX

6664788, Dec 16, 2003

Apr 22, 2002

10/127277

Scott C. Hornbostel - Houston TX
Arthur H. Thompson - Houston TX
Thomas C. Halsey - Annandale NJ
Robert A. Raschke - Houston TX
Clint A. Davis - Bellaire TX

ExxonMobil Upstream Research Company - Houston TX

G01V 100

324323, 324354, 324359, 367 14, 702 14, 181106, 181122

A method for seismic exploration using nonlinear conversions between electromagnetic and seismic energy, with particular attention to the electromagnetic source waveform used. According to the invention, seismic returns from a source waveform are correlated with a reference waveform, with both waveforms custom designed to minimize both correlation side lobes and interference from linear electroseismic effects. A waveform element is selected which may be sequenced by a binary or similar digital code embodying the desired custom design to generate an input sweep with the needed depth penetration and noise suppression. Correlation of the seismic response with the reference waveform in a data processing step mathematically aggregates the seismic response from the input sweep into a single wavelet. Preferred binary digital codes include prescribed variations of maximal length shift-register sequences. Also, an apparatus for generating the desired waveforms.

2002006, May 23, 2002

Apr 30, 2001

09/845524

Clint Davis - Bellaire TX, US
Gary Mee - Houston TX, US

American Traffic Systems, Inc.

G01S013/58

342/104000, 342/052000, 342/055000, 342/115000, 340/936000, 340/937000

A Doppler radar transceiver in a traffic monitoring system includes a pyramidal horn antenna having a rectangular aperture and a dielectric lens mounted at the rectangular aperture. Preferably the pyramidal horn antenna is corrugated and the rectangular aperture has a breadth at least twice its width in order to provide a fan-shaped radar beam most effective for detecting moving vehicles in a stream of traffic. To reduce standing waves in the horn antenna that would otherwise cause nulls that would intermittently interfere with detection of a Doppler signal, the dielectric lens has impedance matching means for matching impedance of the dielectric lens to impedance of free space to reduce standing waves in said horn antenna. Suitable impedance matching means include a quarter-wave transformer or a tapered transformer structure at the interfaces between the dielectric body of the lens and the free-space region inside the horn and outside of the horn. In a preferred embodiment, the front surface of said dielectric lens is flat and the back surface of said dielectric lens is parabolic, and the impedance matching means defines a series of quarter-wavelength deep grooves on both the front and back surfaces of the lens, and the grooves are concentric in a circular pattern about an axis of the lens. This construction facilitates the fabrication of the grooves when the lens faces are formed by turning operations performed by a lathe.

5935190, Aug 10, 1999

Nov 5, 1997

8/967245

Clint A. Davis - Bellaire TX
Gary L. Mee - Houston TX

American Traffic Systems, Inc. - Scottsdale AZ

G06F 1900

701119

A traffic monitoring system has a common housing for a Doppler radar transceiver, a video camera, and a digital computer for processing the Doppler signal. The system also includes a video cassette recorder, a high-speed photographic camera, and a laptop computer for downloading control settings and a program from a diskette or memory card to the digital computer. The digital computer performs an initial self-test by injecting a calibration signal in lieu of a Doppler signal into an electronic interface between the radar transceiver and the digital computer. The radar transceiver generates a Doppler signal having two channels, and the phase between the channels indicates whether a vehicle is approaching or receding from the radar transceiver. The two channels are recorded on the left and right audio channels of the video cassette. Recorded with the video signal is a push-down stack of speeds of vehicles detected on the system, in order to present a record of prevailing traffic conditions when prosecuting a speed violator.

5912822, Jun 15, 1999

Oct 15, 1996

8/730736

Clint A. Davis - Bellaire TX
Gary L. Mee - Houston TX

American Traffic Systems, Inc. - Scottsdale AZ

G01S 1300, G01P 350, G06F 1900

364565

Frequency domain processing is used to determine rapidly whether false signals are present, and to improve the accuracy of speed measurements by rejecting speed measurements that could be inaccurate due to the presence of false signals. A Doppler signal responsive to speed of a moving vehicle is generated by a Doppler radar transceiver. A digital computer transforms the Doppler signal into a frequency domain signal such as an energy spectrum, and the speed of the moving vehicle is computed from the weighted arithmetic mean of the energy spectrum. The mean value, however, is rejected as an indication of speed if the variance of the energy spectrum from the mean exceeds a threshold, or if a differential of the spectrum with respect to frequency exceeds a threshold. The frequency domain processing of the present invention can also be used to reject certain bands of frequencies in the Doppler signal, such as bands of frequencies that differ from the mean value by more than a threshold, and the mean value can then be recomputed to provide an even better indication of the speed of the moving vehicle. Moreover, speed samples computed from successive frames of spectrum can be averaged, and the average value can be rejected as an indication of speed if the variance of the speed samples about the average value exceeds a threshold, or if the difference between successive speed samples exceeds a threshold.

RE41829, Oct 19, 2010

Aug 5, 2004

10/912769

Scott C. Hornbostel - Houston TX, US
Arthur H. Thompson - Houston TX, US
Thomas C. Halsey - Houston TX, US
Robert A. Raschke - Houston TX, US
Clint A. Davis - Bellaire TX, US

ExxonMobil Upstream Research Co. - Houston TX

G01V 1/00, G01V 11/00

324323, 324354, 324359, 702 14, 367 14, 181106, 181122

A method for seismic exploration using nonlinear conversions between electromagnetic and seismic energy, with particular attention to the electromagnetic source waveform used. According to the invention, seismic returns from a source waveform are correlated with a reference waveform, with both waveforms custom designed to minimize both correlation side lobes and interference from linear electroseismic effects. A waveform element is selected which may be sequenced by a binary or similar digital code embodying the desired custom design to generate an input sweep with the needed depth penetration and noise suppression. Correlation of the seismic response with the reference waveform in a data processing step mathematically aggregates the seismic response from the input sweep into a single wavelet. Preferred binary digital codes include prescribed variations of maximal length shift-register sequences. Also, an apparatus for generating the desired waveforms.

5948038, Sep 7, 1999

Jul 31, 1996

8/688832

James P. Daly - Victoria, CA
Clint A. Davis - Bellaire TX
James D. Tuton - Scottsdale AZ

American Traffic Systems, Inc. - Scottsdale AZ

G06F 1900, G06G 770, G06G 776

701117

A traffic violation processing method is disclosed, which includes the steps of monitoring a vehicle; determining whether the vehicle is in violation of a traffic violation and recording the image of the vehicle on a camera when the vehicle is determined to have violated a traffic violation; providing a digital image of the vehicle; recording and storing deployment data corresponding to the violation, wherein the deployment data includes an identifier associated with the traffic violation; assigning the identifier to the digital traffic image; storing the digital image of the vehicle, together with the identifier, on a storage medium; matching the deployment data with the stored digital image by correlating or matching the identifier associated with the deployment data with the identifier associated with the stored digital image; and generating a traffic document that includes the stored digital image and the deployment data.

7599469, Oct 6, 2009

Apr 28, 2006

11/414037

Clint A. Davis - Bellaire TX, US
David H. Theiss - Houston TX, US
William M. Taylor - Houston TX, US
Gerald S. Baker - Houston TX, US
Larry E. McDonald - Hempstead TX, US

Cameron International Corporation - Houston TX

G01N 23/083, G01V 5/08

378 58, 378 59, 378 60, 2502691

In accordance with one exemplary embodiment, the present invention provides a sensor system for detecting a change in condition. The system includes a radioactive source. This system also includes at least one radiation detector configured to detect radiation from the radioactive source. Furthermore, the system includes a displacement assembly configured to physically displace in response to the change in condition and configured to change the radiation levels detected by the radiation detector in response to such displacement. Advantageously, this system facilitates non-intrusive communication of information across a physical barrier, via the measurement of changing radiation levels that change in response to a change in condition, for example.

5929787, Jul 27, 1999

Nov 27, 1996

8/758031

Gary L. Mee - Houston TX
Clint A. Davis - Bellaire TX

G08G 1095

340907

A device for controlling a traffic light, where the controlling of the traffic light is dependent upon receipt and recognition of vibrations. The device includes a vibration receiver for detecting vibrations transmitted through the ground, a processor for converting one or more of the vibrations into a control signal and a controller to trigger a traffic light in response to the control signal. The device may also include a vibration generator, e. g. , at least one channel or groove in a traffic-bearing surface. The vibration generator preferably facilitates the production of a pattern of vibrations when the tire of a vehicle passes over the vibration generator. Further, the device may include a vibration receiver, capable of detecting a pattern of vibrations and producing a pattern of signals corresponding to said pattern of vibrations.

6333701, Dec 25, 2001

Jul 23, 1999

9/360231

Gary L. Mee - Houston TX
Clint A. Davis - Bellaire TX

G08G 1095

340907

A device for controlling a traffic light, where the controlling of the traffic light is dependent upon receipt and recognition of vibrations. The device includes a vibration receiver for detecting vibrations transmitted through the ground, a processor for converting one or more of the vibrations into a control signal and a controller to trigger a traffic light in response to the control signal. The device may also include a vibration generator, e. g. , at least one channel or groove in a traffic-bearing surface. The vibration generator preferably facilitates the production of a pattern of vibrations when the tire of a vehicle passes over the vibration generator. Further, the device may include a vibration receiver, capable of detecting a pattern of vibrations and producing a pattern of signals corresponding to said pattern of vibrations.