Patents Assigned to Detection Systems, Inc.
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Publication number: 20240128931Abstract: A switching system is connected to the power amplifier of an RF system. The switching system can switch the DC supply voltage to the power amplifier while handling the high DC current and the nanosecond switching speed requirements that are mandatory for most RF systems. The embodiments can rapidly control DC voltages but not interfere with the optimized operation of the RF transistor. The embodiments provide a desired sharp turn-on leading edge for an RF pulse while eliminating the extremely long and undesirable ramp down that typically occurs beyond the desired RF pulse period.Type: ApplicationFiled: June 20, 2023Publication date: April 18, 2024Applicant: Weather Detection Systems, Inc.Inventor: Richard S. SMELTZER
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Patent number: 11683011Abstract: A switching system is connected to the power amplifier of an RF system. The switching system can switch the DC supply voltage to the power amplifier while handling the high DC current and the nanosecond switching speed requirements that are mandatory for most RF systems. The embodiments can rapidly control DC voltages but not interfere with the optimized operation of the RF transistor. The embodiments provide a desired sharp turn-on leading edge for an RF pulse while eliminating the extremely long and undesirable ramp down that typically occurs beyond the desired RF pulse period.Type: GrantFiled: December 17, 2019Date of Patent: June 20, 2023Assignee: Weather Detection Systems, Inc.Inventor: Rick Smeltzer
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Patent number: 10832391Abstract: A computing-device implemented system and method for identifying an item in an x-ray image is described. The method includes training a machine learning algorithm with at least one training data set of x-ray images to generate at least one machine-learned model. The method further includes receiving at least one rendered x-ray image that includes an item, identifying the item using the at least one model, and generating an automated detection indication associated with the item.Type: GrantFiled: May 22, 2018Date of Patent: November 10, 2020Assignee: L-3 Security & Detection Systems, Inc.Inventors: David Perticone, Andrew D. Foland
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Publication number: 20200195198Abstract: A switching system is connected to the power amplifier of an RF system. The switching system can switch the DC supply voltage to the power amplifier while handling the high DC current and the nanosecond switching speed requirements that are mandatory for most RF systems. The embodiments can rapidly control DC voltages but not interfere with the optimized operation of the RF transistor. The embodiments provide a desired sharp turn-on leading edge for an RF pulse while eliminating the extremely long and undesirable ramp down that typically occurs beyond the desired RF pulse period.Type: ApplicationFiled: December 17, 2019Publication date: June 18, 2020Applicant: Weather Detection Systems, Inc.Inventor: Rick Smeltzer
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Patent number: 10380727Abstract: Systems, methods, and non-transitory computer-readable media taught herein process a subset of a three-dimensional array of voxels to form an image of a region of interest in an object. Images thus formed are clear, comprehensible, and contextual. The systems, methods, and non-transitory computer-readable media taught herein select the subset of voxels that represent the region of interest along a direction perpendicular to a view direction defined by the region of interest. The subset of voxels represents one or more portions of a plurality of image slices of the object.Type: GrantFiled: August 18, 2016Date of Patent: August 13, 2019Assignee: L-3 Communications Security & Detection Systems, Inc.Inventors: Andrew D. Foland, Andrew David Smith, Justin L. Wright, Brian Joel Baker
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Publication number: 20190041511Abstract: Methods, systems, and apparatus for transmitting a first set of continuous wave (CW) signals, where each CW signal of the first set of CW signals has a first signal frequency and the transmitter is turned off between transmission of each CW signal of the first set of CW signals. For each CW signal of the first set of CW signals, receiving a reflection of the CW signal, and selecting an analog to digital (A/D) sample of the reflection of the CW signal that does not contain ground reflections by selecting the A/D sample based on timing from the transmitter being turned off after transmission of the CW signal. Integrating the selected A/D samples from each of the CW signals of the first set of CW signals to obtain a single A/D sample for the first set of CW signals.Type: ApplicationFiled: August 31, 2018Publication date: February 7, 2019Applicant: L-3 Communications Security and Detection Systems, Inc.Inventors: Christopher Gary Sentelle, Jeffery Carter May
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Patent number: 10119923Abstract: Methodologies, systems, apparatus, and non-transitory computer-readable media are described herein to facilitate acquisition of volumetric data and volumetric image reconstruction. An imaging system can be configured to transport an object at a speed relative to the scan path of an X-ray source such that insufficient measurement data is collected for classically complete geometrical coverage. Iterative image reconstruction techniques may be used to generate volumetric images based on measured volumetric data of at least a portion of the object.Type: GrantFiled: October 19, 2015Date of Patent: November 6, 2018Assignee: L3 Security & Detection Systems, Inc.Inventors: Michael Schmitt, Andrew D. Foland, Boris Oreper
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Patent number: 10115211Abstract: Systems, methods, and non-transitory computer readable media are described herein to facilitate generation of high-resolution two-dimensional projection images of an object having minimal artifacts from three-dimensional computed tomography volumes. Direct or iterative image reconstruction techniques can be used in concert with binning to identify and select measurement data subject to a criterion and resampling of the initial volumetric dataset to generate the high-resolution, two-dimensional projection images of at least a portion of the object.Type: GrantFiled: March 25, 2016Date of Patent: October 30, 2018Assignee: L3 Security & Detection Systems, Inc.Inventor: Michael H. Schmitt
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Patent number: 10082572Abstract: An apparatus includes an extendable wand, and a sensor head coupled to the wand. The sensor head includes a continuous wave metal detector (CWMD) and a radar. When the wand is collapsed, the wand and the sensor head collapse to fill a volume that is smaller than a volume filled by the sensor head and the wand when the wand is extended. Frequency-domain data from a sensor configured to sense a region is accessed, the frequency-domain data is transformed to generate a time-domain representation of the region, a first model is determined based on the accessed frequency-domain data, a second model is determined based on the generated time-domain representation, the second model being associated with a particular region within the sensed region, and a background model that represents a background of the region is determined based on the first model and the second model.Type: GrantFiled: August 31, 2017Date of Patent: September 25, 2018Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Herbert Duvoisin, III, Juan Antonio Torres-Rosario, Christopher Gary Sentelle, Douglas O. Carlson, Glen A. Holman, Marquette Trishaun
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Patent number: 10067225Abstract: Methods, systems, and apparatus for transmitting a first set of continuous wave (CW) signals, where each CW signal of the first set of CW signals has a first signal frequency and the transmitter is turned off between transmission of each CW signal of the first set of CW signals. For each CW signal of the first set of CW signals, receiving a reflection of the CW signal, and selecting an analog to digital (A/D) sample of the reflection of the CW signal that does not contain ground reflections by selecting the A/D sample based on timing from the transmitter being turned off after transmission of the CW signal. Integrating the selected A/D samples from each of the CW signals of the first set of CW signals to obtain a single A/D sample for the first set of CW signals.Type: GrantFiled: August 13, 2015Date of Patent: September 4, 2018Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Christopher Gary Sentelle, Jeffery Carter May
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Patent number: 9980697Abstract: Systems and methods presented herein provide corrections for fluctuations in dose or energy of radiation sources including x-ray radiation sources. The corrections can be applied to improve the quality of transmission radiography data or other radiation imagery or to facilitate feedback control of a radiation source to improve stability.Type: GrantFiled: December 28, 2015Date of Patent: May 29, 2018Assignee: L-3 Communications Security & Detection Systems, Inc.Inventor: Denis Dujmic
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Patent number: 9915727Abstract: Methods, systems, and apparatus for transmitting a first set of stepped-frequency CW signals having first signal parameters, where the first signal parameters includes a first bandwidth and a first step size between signal frequencies. Detecting reflections of the first set of transmitted CW signals. Identifying an indication of a potential target in a frequency range of the reflections of the first set of transmitted CW signals from the detected reflections of the first set of transmitted CW signals. Determining second signal parameters for a second set of stepped-frequency CW signals in response to identifying the indication of the potential target. The second signal parameters include a second bandwidth and a second step size between signal frequencies, and where the second signal parameters focus on the frequency range in which the indication of the potential target is identified. Transmitting the second set of CW signals.Type: GrantFiled: August 7, 2015Date of Patent: March 13, 2018Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Victor V. Reznack, Herbert Duvoisin, III, Joe R. Jordan, III
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Publication number: 20180003814Abstract: An apparatus includes an extendable wand, and a sensor head coupled to the wand. The sensor head includes a continuous wave metal detector (CWMD) and a radar. When the wand is collapsed, the wand and the sensor head collapse to fill a volume that is smaller than a volume filled by the sensor head and the wand when the wand is extended. Frequency-domain data from a sensor configured to sense a region is accessed, the frequency-domain data is transformed to generate a time-domain representation of the region, a first model is determined based on the accessed frequency-domain data, a second model is determined based on the generated time-domain representation, the second model being associated with a particular region within the sensed region, and a background model that represents a background of the region is determined based on the first model and the second model.Type: ApplicationFiled: August 31, 2017Publication date: January 4, 2018Applicant: L-3 Communications Security and Detection Systems, Inc.Inventors: Herbert Duvoisin, III, Juan Antonio Torres-Rosario, Christopher Gary Sentelle, Douglas O. Carlson, Glen A. Holman, Marquette Trishaun
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Patent number: 9753122Abstract: An apparatus includes an extendable wand, and a sensor head coupled to the wand. The sensor head includes a continuous wave metal detector (CWMD) and a radar. When the wand is collapsed, the wand and the sensor head collapse to fill a volume that is smaller than a volume filled by the sensor head and the wand when the wand is extended. Frequency-domain data from a sensor configured to sense a region is accessed, the frequency-domain data is transformed to generate a time-domain representation of the region, a first model is determined based on the accessed frequency-domain data, a second model is determined based on the generated time-domain representation, the second model being associated with a particular region within the sensed region, and a background model that represents a background of the region is determined based on the first model and the second model.Type: GrantFiled: August 15, 2014Date of Patent: September 5, 2017Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Herbert Duvoisin, III, Juan Antonio Torres-Rosario, Christopher Gary Sentelle, Douglas O. Carlson, Glen A. Holman, Marquette Trishaun
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Patent number: 9733353Abstract: An apparatus for detecting objects includes a transceiver configured to generate a radar signal, a radar having a transmit antenna configured to transmit the radar signal, and a receive antenna configured to sense a return signal in response to a transmission of the radar signal. The apparatus also includes a processor configured to detect an object based on the return signal. One or more of the transmit antenna or the receive antenna include offset spiral feed antennas.Type: GrantFiled: January 16, 2015Date of Patent: August 15, 2017Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Douglas O. Carlson, Herbert Duvoisin, III, Christopher Gary Sentelle
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Patent number: 9348040Abstract: An imaging system exposes an object within a region to a beam of penetrating radiation. The beam of penetrating radiation is sensed on a side opposite the region from a source of the beam. An attenuation of the beam caused by passing the beam through the object is determined, the attenuation is compared to a threshold attenuation. If the attenuation exceeds the threshold attenuation, a parameter of the imaging system is adjusted based on the determined attenuation.Type: GrantFiled: April 14, 2015Date of Patent: May 24, 2016Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Ronald Steven McNabb, Jr., Nicholas Danvers Penrose Gillett
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Patent number: 9337006Abstract: An inlet apparatus is disclosed. The apparatus may include a first conduit for sampling, and a second and third conduit for directing flow throughout the inlet apparatus. Flow may be induced in two opposite directions through the second conduit, which affect the flow of gas through the first conduit for sampling. The various conduits of the apparatus may be connected to a device for inducing flow in different directions. The duration of the flow in a particular direction affects the amount of sample gas that enters a detection device.Type: GrantFiled: February 12, 2014Date of Patent: May 10, 2016Assignee: Chemring Detection Systems, Inc.Inventors: Eric Charles Wallis, Paul J. Rauch, Matthew Todd Griffin, John Michael Alfred Petinarides
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Patent number: 9316727Abstract: A stepped-frequency radar signal is transmitted through a barrier. A transmitter of the stepped-frequency radar is on a first side of the barrier, a first object is on a second side of the barrier, and a second object that is distinct from the first object is on the second side of the barrier. A signal including a reflection of the transmitted signal from the first object and a reflection of the transmitted signal from the second object is sensed. The sensed signal is analyzed to determine that a first detection is associated with the first object and a second detection is associated with a second object.Type: GrantFiled: July 14, 2014Date of Patent: April 19, 2016Assignee: L-3 Communications Security and Detection Systems, Inc.Inventors: Christopher Gary Sentelle, Donald Charles Wright, Felix M. Fontan, Juan Antonio Torres-Rosario
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Patent number: D794797Type: GrantFiled: September 15, 2015Date of Patent: August 15, 2017Assignee: L-3 COMMUNICATIONS SECURITY AND DETECTION SYSTEMS, INCInventors: Hiep Tran, Thomas Warnick, Sandra Hiltz, Michael Lanzaro, Gregory J. Tobin
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Patent number: D829912Type: GrantFiled: July 13, 2017Date of Patent: October 2, 2018Assignee: L-3 COMMUNICATIONS SECURITY AND DETECTION SYSTEMS, INCInventors: Hiep Tran, Thomas Warnick, Sandra Hiltz, Michael Lanzaro, Gregory Tobin