Patents by Inventor Asaf Tzadok
Asaf Tzadok 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: 12047084Abstract: A first 1:N frequency divider has an input configured to be coupled to one of two signals and a second 1:N frequency divider has an input configured to be coupled to another of the two signals. A mixer includes two inputs, where each input is coupled to an output of one of the first and second 1:N frequency dividers. A low-pass filter has an input coupled to an output of the mixer and an analog-to-digital converter (ADC) has an input coupled to an output of the low-pass filter. A data collection and analysis block repeatedly changes a phase of an output of the first 1:N divider, collects a set of digitized data generated by the ADC, and estimates the phase difference between the two signals based on the set of digitized data.Type: GrantFiled: December 30, 2022Date of Patent: July 23, 2024Assignee: International Business Machines CorporationInventors: Asaf Tzadok, Alberto Valdes Garcia, John Francis Bulzacchelli
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Publication number: 20240223195Abstract: A first 1:N frequency divider has an input configured to be coupled to one of two signals and a second 1:N frequency divider has an input configured to be coupled to another of the two signals. A mixer includes two inputs, where each input is coupled to an output of one of the first and second 1:N frequency dividers. A low-pass filter has an input coupled to an output of the mixer and an analog-to-digital converter (ADC) has an input coupled to an output of the low-pass filter. A data collection and analysis block repeatedly changes a phase of an output of the first 1:N divider, collects a set of digitized data generated by the ADC, and estimates the phase difference between the two signals based on the set of digitized data.Type: ApplicationFiled: December 30, 2022Publication date: July 4, 2024Inventors: Asaf Tzadok, Alberto Valdes Garcia, John Francis Bulzacchelli
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Patent number: 11950585Abstract: Methods and systems for estimating a distance to an object are described. In an example, a device can receive a reflected signal of a modulated signal being used in a wireless transmission of data. The reflected signal can be a reflection of the modulated signal from at least one object. The device can estimate a distance to the at least one object based on the modulated signal and the reflected signal. Further, the device can use the estimated distance to image a scenery including the at least one object.Type: GrantFiled: February 24, 2020Date of Patent: April 9, 2024Assignee: International Business Machines CorporationInventors: Junfeng Guan, Bodhisatwa Sadhu, Arun Paidimarri, Asaf Tzadok, Alberto Valdes Garcia
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Patent number: 11796663Abstract: A method of automatic image rejection and monitoring of a frequency modulated continuous-wave (FMCW) radar system, includes generating a quadrature FMCW signal comprising an in-phase signal and a quadrature signal by a dual output FMCW signal generator. The in-phase signal and the quadrature signal are transmitted. A radar signal comprising a response in-phase and a quadrature signal is received in response to the transmitted in-phase signal and the quadrature signal. The response in-phase signal and quadrature signals are provided to an analog to digital converter (ADC). An in-phase beat signal (Beat-I) and a quadrature beat signal (Beat-Q) are extracted from the ADC, based on a received windowing signal. A relative phase and/or amplitude adjustment is generated by providing a phase calibration variable (?t) and/or an amplitude calibration variable (At) as input to the dual output FMCW signal generator, based on a correlation between the Beat-I and the Beat-Q.Type: GrantFiled: February 20, 2021Date of Patent: October 24, 2023Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventor: Asaf Tzadok
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Patent number: 11639985Abstract: Motion-related 3D feature extraction by receiving a set of sequential radar signal data frames associated with a subject, determining radar signal amplitude and phase for each data frame, determining radar signal phase changes between sequential data frames, and extracting, by a trained machine learning model, one or more three-dimensional features from the sequential radar signal data frames according to the radar signal amplitude and the radar signal phase changes between sequential data frames.Type: GrantFiled: July 2, 2020Date of Patent: May 2, 2023Assignee: International Business Machines CorporationInventor: Asaf Tzadok
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Patent number: 11555908Abstract: A method includes generating a first modulated continuous wave from a generating location; transmitting the first modulated continuous wave to an object positioned at a distance from the generating location; generating a second modulated continuous wave from the generating location, wherein the second modulated continuous wave is generated at a predetermined time that is different from a predetermined time at which the first modulated continuous wave is generated; receiving, at a mixer, the first modulated continuous wave from the object; receiving, at the mixer, the second modulated continuous wave from the generating location; mixing the received first modulated continuous wave with the second modulated continuous wave to produce a beat signal to determine a range of the object from the generating location; and outputting the determined range of the object from the generating location.Type: GrantFiled: September 6, 2019Date of Patent: January 17, 2023Assignee: International Business Machines CorporationInventor: Asaf Tzadok
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Patent number: 11474228Abstract: A radar-based security screening system for detecting objects is described. The screening system includes a radar transmitter, a radar receiver, and a processing unit. In use, the radar transmitter steers a radar beam across a screening volume. The radar receiver, in turn, receives a return signal from an object over time as the object moves in the screening volume to create a three-dimensional temporal signature for the object. The processing unit classifies the three-dimensional temporal signature utilizing a classification process based on a deep neural network model, and provides an alert when the object is classified as an object of interest. During screening, a screened person is not required to remain still in a confined volume and is not exposed to harmful radiation.Type: GrantFiled: September 3, 2019Date of Patent: October 18, 2022Assignee: International Business Machines CorporationInventors: Asaf Tzadok, Alberto Valdes Garcia
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Publication number: 20220268914Abstract: A method of automatic image rejection and monitoring of a frequency modulated continuous-wave (FMCW) radar system, includes generating a quadrature FMCW signal comprising an in-phase signal and a quadrature signal by a dual output FMCW signal generator. The in-phase signal and the quadrature signal are transmitted. A radar signal comprising a response in-phase and a quadrature signal is received in response to the transmitted in-phase signal and the quadrature signal. The response in-phase signal and quadrature signals are provided to an analog to digital converter (ADC). An in-phase beat signal (Beat-I) and a quadrature beat signal (Beat-Q) are extracted from the ADC, based on a received windowing signal. A relative phase and/or amplitude adjustment is generated by providing a phase calibration variable (?t) and/or an amplitude calibration variable (At) as input to the dual output FMCW signal generator, based on a correlation between the Beat-I and the Beat-Q.Type: ApplicationFiled: February 20, 2021Publication date: August 25, 2022Inventor: Asaf Tzadok
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Patent number: 11404797Abstract: Methods and system for shaping radiation patterns are described. Given a plurality of radiation patterns corresponding to spatial combinations of a plurality of signals, a system can perform beam switching between the given plurality of radiation patterns within a configured time. The beam switching within the configured time can create a beam having a new radiation pattern within the signal modulation bandwidth.Type: GrantFiled: January 2, 2020Date of Patent: August 2, 2022Assignee: International Business Machines CorporationInventors: Asaf Tzadok, Bodhisatwa Sadhu, Arun Paidimarri
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Patent number: 11271301Abstract: While a radar waveform generator coupled to a phased antenna array is inactive, a beam steering command is provided to the phased antenna array to cause the phased antenna array be configured for a given transmit and receive direction. While the radar waveform generator is active, received radar results are assigned to the given transmit and receive direction. the providing of the command and the assigning are repeated for a plurality of additional transmit and receive directions corresponding to a desired scan area.Type: GrantFiled: May 31, 2019Date of Patent: March 8, 2022Assignee: International Business Machines CorporationInventors: Asaf Tzadok, Alberto Valdes Garcia, Mark Yeck, Huijuan Liu
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Publication number: 20220021822Abstract: An imaging system is provided. A first imaging system captures initial sensor data in a form of visible domain data. A second imaging system captures subsequent sensor data in a form of second domain data, wherein the initial and subsequent sensor data are of different spectral domains. A controller subsystem detects at least one region of interest in real-time by applying a machine learning technique to the visible domain data, localizes at least one object of interest in the at least one region of interest to generate positional data for the at least one object of interest, and autonomously steers a point of focus of the second imaging system to a region of a scene including the object of interest to capture the second domain data responsive to the positional data.Type: ApplicationFiled: July 14, 2020Publication date: January 20, 2022Inventors: Alberto Valdes Garcia, Ahmet Serkan Ozcan, Vincent Albouy, Asaf Tzadok, Petar K. Pepeljugoski, Jean-Olivier Plouchart
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Publication number: 20220003840Abstract: Motion-related 3D feature extraction by receiving a set of sequential radar signal data frames associated with a subject, determining radar signal amplitude and phase for each data frame, determining radar signal phase changes between sequential data frames, and extracting, by a trained machine learning model, one or more three-dimensional features from the sequential radar signal data frames according to the radar signal amplitude and the radar signal phase changes between sequential data frames.Type: ApplicationFiled: July 2, 2020Publication date: January 6, 2022Inventor: Asaf Tzadok
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Publication number: 20210215814Abstract: Methods and systems for estimating a distance to an object are described. In an example, a device can receive a reflected signal of a modulated signal being used in a wireless transmission of data. The reflected signal can be a reflection of the modulated signal from at least one object. The device can estimate a distance to the at least one object based on the modulated signal and the reflected signal. Further, the device can use the estimated distance to image a scenery including the at least one object.Type: ApplicationFiled: February 24, 2020Publication date: July 15, 2021Inventors: Junfeng Guan, Bodhisatwa Sadhu, Arun Paidimarri, Asaf Tzadok, Alberto Valdes Garcia
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Publication number: 20210210870Abstract: Methods and system for shaping radiation patterns are described. Given a plurality of radiation patterns corresponding to spatial combinations of a plurality of signals, a system can perform beam switching between the given plurality of radiation patterns within a configured time. The beam switching within the configured time can create a beam having a new radiation pattern within the signal modulation bandwidth.Type: ApplicationFiled: January 2, 2020Publication date: July 8, 2021Inventors: Asaf Tzadok, Bodhisatwa Sadhu, Arun Paidimarri
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Publication number: 20210072368Abstract: A method includes generating a first modulated continuous wave from a generating location; transmitting the first modulated continuous wave to an object positioned at a distance from the generating location; generating a second modulated continuous wave from the generating location, wherein the second modulated continuous wave is generated at a predetermined time that is different from a predetermined time at which the first modulated continuous wave is generated; receiving, at a mixer, the first modulated continuous wave from the object; receiving, at the mixer, the second modulated continuous wave from the generating location; mixing the received first modulated continuous wave with the second modulated continuous wave to produce a beat signal to determine a range of the object from the generating location; and outputting the determined range of the object from the generating location.Type: ApplicationFiled: September 6, 2019Publication date: March 11, 2021Inventor: Asaf Tzadok
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Publication number: 20210063559Abstract: A radar-based security screening system for detecting objects is described. The screening system includes a radar transmitter, a radar receiver, and a processing unit. In use, the radar transmitter steers a radar beam across a screening volume. The radar receiver, in turn, receives a return signal from an object over time as the object moves in the screening volume to create a three-dimensional temporal signature for the object. The processing unit classifies the three-dimensional temporal signature utilizing a classification process based on a deep neural network model, and provides an alert when the object is classified as an object of interest. During screening, a screened person is not required to remain still in a confined volume and is not exposed to harmful radiation.Type: ApplicationFiled: September 3, 2019Publication date: March 4, 2021Inventors: Asaf Tzadok, Alberto Valdes Garcia
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Publication number: 20200381823Abstract: While a radar waveform generator coupled to a phased antenna array is inactive, a beam steering command is provided to the phased antenna array to cause the phased antenna array be configured for a given transmit and receive direction. While the radar waveform generator is active, received radar results are assigned to the given transmit and receive direction. the providing of the command and the assigning are repeated for a plurality of additional transmit and receive directions corresponding to a desired scan area.Type: ApplicationFiled: May 31, 2019Publication date: December 3, 2020Inventors: Asaf Tzadok, Alberto Valdes Garcia, Mark Yeck, Huijuan Liu
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Patent number: 10732726Abstract: A method for a Human-Computer-Interaction (HCI) processing includes receiving data derived from reflected signals of a steerable-beam antenna and processing the received data in a deep learning machine architecture.Type: GrantFiled: April 4, 2019Date of Patent: August 4, 2020Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventor: Asaf Tzadok
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Publication number: 20200097092Abstract: A method for a Human-Computer-Interaction (HCI) processing includes receiving data derived from reflected signals of a steerable-beam antenna and processing the received data in a deep learning machine architecture.Type: ApplicationFiled: April 4, 2019Publication date: March 26, 2020Inventor: Asaf TZADOK
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Patent number: 10467756Abstract: There is provided a method of computing a camera pose of a digital image, comprising: computing query-regions of a digital image, each query-region maps to training image region(s) of training image(s) by a 2D translation and/or a 2D scaling, each training image associated with a reference camera pose, each query-region associated with a center point and a computed weighted mask that weights the query-region pixels according to computed correlations with the corresponding training image region, mapping cloud points corresponding to pixels of matched training image region(s) to corresponding images pixels of the matched query-regions according to a statistically significant correlation requirement between the center point of the query-region and the matched training image region, and according to the computed weight mask, and computing the camera pose according to an aggregation of the camera poses, and the mapped cloud points and corresponding image pixels of the matched query-regions.Type: GrantFiled: July 12, 2017Date of Patent: November 5, 2019Assignee: International Business Machines CorporationInventors: Leonid Karlinsky, Uzi Shvadron, Asaf Tzadok, Yochay Tzur