Patents by Inventor Lam H. Nguyen
Lam H. Nguyen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10941762Abstract: A liquid delivery system is presented. The liquid delivery system comprises a source of fluid coupled to an outlet. The liquid delivery system also includes a hydraulic cylinder coupled to the source of fluid. The hydraulic cylinder has a piston movable between a first limit position and a second limit position during an operational cycle. The hydraulic cylinder is configured to pressurize fluid received from the source of fluid, and deliver the pressurized fluid to the outlet. The liquid delivery system also comprises a rod connected to the piston and extending out of the cylinder. The liquid delivery system also comprises a sensor configured to sense a position of the rod to provide a signal indication of the piston with respect to the first position or the second position. An indication of the sensed position is provided to a controller, and the controller is configured to send a control signal to initiate a normal operation loop based on the sensed position.Type: GrantFiled: March 24, 2017Date of Patent: March 9, 2021Assignee: Wagner Spray Tech CorporationInventors: Daniel R. Zientara, Lam H. Nguyen, Jonathan L. Schaumann
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Patent number: 10228449Abstract: A system for reception of electromagnetic waves in a spectrum in which interference with radio frequencies of other electronics devices occurs comprising a transmitter; at least one receiver configured to receive the received signal; each received signal organized into a digital vector; at least one memory portion configured to store a plurality of received signals in a vector form; the vectors being combined into a matrix, each vector of the matrix being a digital data record representing a received signal; at least one processor operatively connected to the at least one memory portion; the at least one processor configured to estimate that portion of the received signal attributable to noise; the at least one processor operating to jointly estimate a minimal number of distinctive noise patterns and minimize the simplicity of the data of interest; the at least processor operating to process the noise and data of interest separately.Type: GrantFiled: June 7, 2016Date of Patent: March 12, 2019Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Lam H. Nguyen, Trac D. Tran
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Publication number: 20170199513Abstract: A liquid delivery system is presented. The liquid delivery system comprises a source of fluid coupled to an outlet. The liquid delivery system also includes a hydraulic cylinder coupled to the source of fluid. The hydraulic cylinder has a piston movable between a first limit position and a second limit position during an operational cycle. The hydraulic cylinder is configured to pressurize fluid received from the source of fluid, and deliver the pressurized fluid to the outlet. The liquid delivery system also comprises a rod connected to the piston and extending out of the cylinder. The liquid delivery system also comprises a sensor configured to sense a position of the rod to provide a signal indication of the piston with respect to the first position or the second position. An indication of the sensed position is provided to a controller, and the controller is configured to send a control signal to initiate a normal operation loop based on the sensed position.Type: ApplicationFiled: March 24, 2017Publication date: July 13, 2017Inventors: Daniel R. Zientara, Lam H. Nguyen, Jonathan L. Schaumann
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Publication number: 20160341814Abstract: A system for reception of electromagnetic waves in a spectrum in which interference with radio frequencies of other electronics devices occurs comprising a transmitter; at least one receiver configured to receive the received signal; each received signal organized into a digital vector; at least one memory portion configured to store a plurality of received signals in a vector form; the vectors being combined into a matrix, each vector of the matrix being a digital data record representing a received signal; at least one processor operatively connected to the at least one memory portion; the at least one processor configured to estimate that portion of the received signal attributable to noise; the at least one processor operating to jointly estimate a minimal number of distinctive noise patterns and minimize the simplicity of the data of interest; the at least processor operating to process the noise and data of interest separately.Type: ApplicationFiled: June 7, 2016Publication date: November 24, 2016Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-IInventors: Lam H. Nguyen, Trac D. Tran
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Patent number: 9363024Abstract: A system for reception of electromagnetic waves in spectrum in which interference occurs comprising at least one transmitter; at least one receiver configured to receive the received signal; a first memory portion configured to store data relating to a point target response; a spectrum estimator configured to estimate the frequencies at which interfering signals occur; at least one processor configured to generate an estimation of the interfering signals at the frequencies estimated by the spectrum estimator; a second memory portion operatively connected to the at least one processor configured to store the estimation of the components of the interfering signals; the at least one processor configured to substantially reduce or eliminate radio frequency interfering signals from the received signal utilizing the point target response and the estimation of the interfering signals; and a method to substantially reduce or eliminate radio frequency interfering signals from for image data.Type: GrantFiled: August 6, 2014Date of Patent: June 7, 2016Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Lam H. Nguyen, Trac D. Tran
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Patent number: 9250323Abstract: A method and system for forming an image comprising at least one processor for performing the following: initializing an N by P image array IO by setting all values to a large number; inputting at least one image frame; randomly selecting and removing a subset of pixel locations from the total number of available pixel locations to form a preliminary image array IC; for each pixel location comparing the complex magnitude of each pixel in the image array IO with the magnitude of the corresponding pixel in image array IC, and if the pixel value in the image array IC is smaller than the corresponding pixel in the image array IO or if the IC value equals 0, then the current pixel value in image array IO is replaced by the pixel value in the image array IC; and repeating for a number of iterations to form an image.Type: GrantFiled: May 24, 2012Date of Patent: February 2, 2016Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Kenneth I. Ranney, Anthony F. Martone, Roberto Innocenti, Lam H. Nguyen
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Patent number: 9075129Abstract: A system and method for generating enhanced images of a target area using projection data obtained using an electromagnetic radiation source, the method comprising forming an initial aperture of data points containing positional information of the transmitter and receiver of the electromagnetic radiation; and an associated data record; randomly removing data points from the initial aperture to form subapertures with randomly missing data points; creating a subset of data points from each of the plurality of subapertures; the subsets containing data points containing image data for portions of the target area which are the same or overlapping; comparing the subsets of data points to determine variations in the data points indicative of transient data; based upon the comparison between overlapping subsets of image data, determining whether the subsets of data points comprise image data relating to physical objects or noise.Type: GrantFiled: April 18, 2012Date of Patent: July 7, 2015Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Lam H Nguyen, Thong T. Do
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Publication number: 20150061926Abstract: A method and system for forming an image comprising at least one processor for performing the following: initializing an N by P image array IO by setting all values to a large number; inputting at least one image frame; randomly selecting and removing a subset of pixel locations from the total number of available pixel locations to form a preliminary image array IC; for each pixel location comparing the complex magnitude of each pixel in the image array IO with the magnitude of the corresponding pixel in image array IC, and if the pixel value in the image array IC is smaller than the corresponding pixel in the image array IO or if the IC value equals 0, then the current pixel value in image array IO is replaced by the pixel value in the image array IC; and repeating for a number of iterations to form an image.Type: ApplicationFiled: May 24, 2012Publication date: March 5, 2015Applicant: U.S. Government as represented by the Secretary of the ArmyInventors: KENNETH I. RANNEY, ANTHONY F. MARTONE, ROBERTO INNOCENTI, LAM H. NGUYEN
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Publication number: 20140347213Abstract: A system for reception of electromagnetic waves in spectrum in which interference occurs comprising at least one transmitter; at least one receiver configured to receive the received signal; a first memory portion configured to store data relating to a point target response; a spectrum estimator configured to estimate the frequencies at which interfering signals occur; at least one processor configured to generate an estimation of the interfering signals at the frequencies estimated by the spectrum estimator; a second memory portion operatively connected to the at least one processor configured to store the estimation of the components of the interfering signals; the at least one processor configured to substantially reduce or eliminate radio frequency interfering signals from the received signal utilizing the point target response and the estimation of the interfering signals; and a method to substantially reduce or eliminate radio frequency interfering signals from for image data.Type: ApplicationFiled: August 6, 2014Publication date: November 27, 2014Inventors: Lam H. Nguyen, Trac D. Tran
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Publication number: 20130236115Abstract: A system of recovering information wide band signal comprising a receiver(s) for receiving data signal responses from a target area; the received data signal responses having information missing at a plurality of frequencies; at least one processor for recovery of data from the data signal responses operatively connected to the receiver(s); a first memory comprising time-shifted responses based upon the wide band signal response, a second memory comprising a plurality of spectrally filtered time-shifted responses; whereby the first and second memories operate to provide data to the at least one processor compensate for the information missing at the plurality of frequencies.Type: ApplicationFiled: May 22, 2012Publication date: September 12, 2013Applicant: U.S. Government as represented by the Secretary of the ArmyInventors: LAM H. NGUYEN, THONG T. DO
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Publication number: 20120250748Abstract: A method and system of reconstructing data signals from one of incomplete measurements comprising a receiver for receiving data signals, an ADC system operatively connected to the receiver that digitizes the received data signal at a slower rate than the Nyquist rate to obtain sparse measurements; first and second dictionaries comprising a plurality of time shifted responses recovered from the data signal; the first dictionary comprising time shifted versions of the previously observed data signals which are sampled at or above the Nyquist minimum sample rate; the second dictionary comprising time shifted versions are sampled below the Nyquist minimum, and at least one processor for reconstruction of the waveform signals by transforming the sub-Nyquist digitized output using the first and second dictionaries to produce the data signal.Type: ApplicationFiled: March 9, 2012Publication date: October 4, 2012Applicant: U.S. Government as represented by the Secretary of the ArmyInventors: Lam H. Nguyen, Trac Tran
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Publication number: 20120206293Abstract: A system and method for generating enhanced images of a target area using projection data obtained using an electromagnetic radiation source, the method comprising forming an initial aperture of data points containing positional information of the transmitter and receiver of the electromagnetic radiation; and an associated data record; randomly removing data points from the initial aperture to form subapertures with randomly missing data points; creating a subset of data points from each of the plurality of subapertures; the subsets containing data points containing image data for portions of the target area which are the same or overlapping; comparing the subsets of data points to determine variations in the data points indicative of transient data; based upon the comparison between overlapping subsets of image data, determining whether the subsets of data points comprise image data relating to physical objects or noise.Type: ApplicationFiled: April 18, 2012Publication date: August 16, 2012Applicant: U.S Government as represented by the Secretary of the ArmyInventors: LAM H. NGUYEN, THONG T. DO
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Publication number: 20110163912Abstract: A method and system for generating images from projection data comprising: at least one processor for processing input data, the input data comprising positional data and image data, the image data comprising frequency data for a pre-determined number k frequencies the at least one processor operating to: a) set the frequency data to zero for a predetermined percentage of the k frequencies to form modified frequency data; b) form a preliminary image comprising an array of retained pixel values based upon first positional data and the modified frequency data; c) set the frequency data to zero for a predetermined percentage of the k frequencies to form modified frequency data; d) form a modified image comprising an array of pixels based upon the positional data and the modified frequency data; e) compare the retained array of pixel values to the pixel values of the modified image formed at step (d); f) retain the minimum pixel value at each pixel location to form an image comprising minimum pixel values; g) repType: ApplicationFiled: March 11, 2011Publication date: July 7, 2011Applicant: U.S. Government as represented by the Secretary of the ArmyInventors: Kenneth I. Ranney, Jeffrey P. Sichina, Lam H. Nguyen