Patents by Inventor Le Zheng
Le Zheng 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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Publication number: 20250054231Abstract: Computer-implemented peer-engagement through graphical definition of contact-generating events in a virtualized metaverse includes visually presenting to a user, on an interactive interface, a multi-dimensional scene of a virtual environment. The user provides input to graphically define one or more contact-generating events within the multi-dimensional scene, which events are detected as being triggered by one or more virtualized avatars in the multi-dimensional scene. According to the triggering of the events and other predefined contact-engaging criteria, a contact-initiating prompt may be transmitted to a peer user associated with the one or more virtualized avatars in the multi-dimensional scene.Type: ApplicationFiled: August 11, 2023Publication date: February 13, 2025Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Ya Qing CHEN, Liang Ying XU, Jian WANG, Chuan Le ZHENG, Xiao Feng JI
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Patent number: 12216199Abstract: This document describes techniques for enabling de-aliased imaging for a synthetic aperture radar. Radar signals processed by a synthetic aperture radar (SAR) system may include false detections in the form of aliasing induced by grating lobes. The techniques described herein can reduce the adverse effects of grating lobes by obtaining an initial SAR image using a back-projection algorithm. Aliasing effects (e.g., false detections) in this initial image may be common due to the limitations of an SAR system moving at non-uniform speeds. A refined image is produced from the initial image by applying a de-aliasing filter to the initial image. The refined image may have reduced or eliminated false detections that attribute to aliasing effects, resulting in a better representation of the environment of the vehicle.Type: GrantFiled: October 15, 2021Date of Patent: February 4, 2025Assignee: Aptiv Technologies AGInventors: Le Zheng, Yu Zhang, Edgar Ortiz, Clinton Colby
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Publication number: 20240378817Abstract: According to one embodiment, a method, computer system, and computer program product for head-driven, self-captured photography is provided. The embodiment may include detecting a trigger event performed by a user while the user is interacting with a virtual environment. The embodiment may also include displaying a virtual camera within the virtual environment. The embodiment may further include modifying a location, a distance, and an orientation of the virtual camera in relation to the user based on a plurality of facial movement trigger events by the user. The embodiment may also include capturing one or more images using the virtual camera at the location, the distance, and the orientation based on a facial movement trigger event within the plurality of facial movement trigger events.Type: ApplicationFiled: May 9, 2023Publication date: November 14, 2024Inventors: Xiao Feng Ji, Ya Qing Chen, Chuan Le Zheng, Liang Ying Xu, RUN HUA CHI, Jian Wang
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Publication number: 20240320414Abstract: Summary generation based on comparison objects can include receiving text descriptions of a target object and at least one comparison object. Semantic vectors from the text descriptions can be obtained, using a deep learning based semantic extraction model. The semantic vectors can be input to a generator model trained using an adversarial machine learning technique, the generator model outputting a text summary of the target object describing only unique characteristics of the target object different from characteristics of the at least one comparison object and excluding the characteristics of the at least one comparison object.Type: ApplicationFiled: March 20, 2023Publication date: September 26, 2024Inventors: Li Wang, Wen Juan Nie, Yi Chen Zhang, Chuan Le Zheng, Danlei Zhang, Xiao Feng Ji
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Publication number: 20240085540Abstract: This document describes techniques and systems to resolve return signals among pixels in lidar systems. The described lidar system transmits signals with different waveforms for consecutive pixels to associate return signals with their corresponding pixels. During a detection window, the lidar system receives a return signal and compares it in the frequency domain to at least two template signals. The template signals include the waveform of an initial pixel and a subsequent pixel of two consecutive pixels, respectively. The lidar system then determines, based on the comparison to the template signals, the pixel to which the return signal corresponds and determines a characteristic of an object that reflected the return signal. In this way, the lidar system can confidently resolve detections to reduce the time between pixels. This improvement allows the described lidar system to operate at faster scanning speeds and realize a faster reaction time for automotive applications.Type: ApplicationFiled: July 11, 2023Publication date: March 14, 2024Inventors: Michael DeLAUS, Chenghui HAO, Le ZHENG, Roman DIETZ
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Patent number: 11921228Abstract: This document describes techniques and systems of a radar system with modified orthogonal linear antenna subarrays and an angle-finding module. The described radar system includes a first one-dimensional (1D) (e.g., linear) subarray; a second 1D subarray positioned orthogonal to the first 1D subarray; and a two-dimensional (2D) subarray. Using electromagnetic energy received by the first 1D subarray and the second 2D subarray, azimuth angles and elevation angles associated with one or more objects can be determined. The radar system associates, using electromagnetic energy received by the 2D subarray, pairs of an azimuth angle and an elevation angle to the respective objects. In this way, the described systems and techniques can reduce the number of antenna elements while maintaining the angular resolution of a rectangular 2D array with similar aperture sizing.Type: GrantFiled: February 23, 2023Date of Patent: March 5, 2024Assignee: Aptiv Technologies LimitedInventors: Yu Zhang, Le Zheng, Zhengzheng Li, Xin Zhang
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Publication number: 20230324531Abstract: This document describes techniques and systems for asymmetrical frequency-division multiplexing (FDM) for radar systems. In some examples, a radar system includes multiple transmitters, multiple receivers, multiple polyphase shifters, and a processor. The transmitters can transmit electromagnetic (EM) signals in an FDM scheme. The receivers can receive EM signals reflected by one or more objects that include multiple channels. The polyphase shifters can introduce at least four potential phase shifts. The processor can control the polyphase shifters to introduce phase shifts asymmetrically spaced in a frequency spectrum. The processor can determine, using residue estimation and subtraction, potential detections of the objects. In this way, the described asymmetrical FDM for radar systems can support many simultaneous MIMO channels, increase the dynamic range of the radar system, resolve Doppler ambiguities, and provide an efficient processing scheme.Type: ApplicationFiled: September 15, 2022Publication date: October 12, 2023Inventors: Zhengzheng Li, Stuart Rogers, Le Zheng
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Patent number: 11740338Abstract: This document describes techniques and systems to resolve return signals among pixels in lidar systems. The described lidar system transmits signals with different waveforms for consecutive pixels to associate return signals with their corresponding pixels. During a detection window, the lidar system receives a return signal and compares it in the frequency domain to at least two template signals. The template signals include the waveform of an initial pixel and a subsequent pixel of two consecutive pixels, respectively. The lidar system then determines, based on the comparison to the template signals, the pixel to which the return signal corresponds and determines a characteristic of an object that reflected the return signal. In this way, the lidar system can confidently resolve detections to reduce the time between pixels. This improvement allows the described lidar system to operate at faster scanning speeds and realize a faster reaction time for automotive applications.Type: GrantFiled: July 2, 2020Date of Patent: August 29, 2023Assignee: Aptiv Technologies LimitedInventors: Michael DeLaus, Chenghui Hao, Le Zheng, Roman Dietz
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Publication number: 20230204713Abstract: This document describes techniques and systems of a radar system with modified orthogonal linear antenna subarrays and an angle-finding module. The described radar system includes a first one-dimensional (1D) (e.g., linear) subarray; a second 1D subarray positioned orthogonal to the first 1D subarray; and a two-dimensional (2D) subarray. Using electromagnetic energy received by the first 1D subarray and the second 2D subarray, azimuth angles and elevation angles associated with one or more objects can be determined. The radar system associates, using electromagnetic energy received by the 2D subarray, pairs of an azimuth angle and an elevation angle to the respective objects. In this way, the described systems and techniques can reduce the number of antenna elements while maintaining the angular resolution of a rectangular 2D array with similar aperture sizing.Type: ApplicationFiled: February 23, 2023Publication date: June 29, 2023Inventors: Yu Zhang, Le Zheng, Zhengzheng Li, Xin Zhang
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Patent number: 11619705Abstract: This document describes techniques and systems of a radar system with modified orthogonal linear antenna subarrays and an angle-finding module. The described radar system includes a first one-dimensional (1D) (e.g., linear) subarray; a second 1D subarray positioned orthogonal to the first 1D subarray; and a two-dimensional (2D) subarray. Using electromagnetic energy received by the first 1D subarray and the second 2D subarray, azimuth angles and elevation angles associated with one or more objects can be determined. The radar system associates, using electromagnetic energy received by the 2D subarray, pairs of an azimuth angle and an elevation angle to the respective objects. In this way, the described systems and techniques can reduce the number of antenna elements while maintaining the angular resolution of a rectangular 2D array with similar aperture sizing.Type: GrantFiled: October 20, 2020Date of Patent: April 4, 2023Assignee: Aptiv Technologies LimitedInventors: Yu Zhang, Le Zheng, Zhengzheng Li, Xin Zhang
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Publication number: 20230018183Abstract: This document describes techniques for enabling de-aliased imaging for a synthetic aperture radar. Radar signals processed by a synthetic aperture radar (SAR) system may include false detections in the form of aliasing induced by grating lobes. The techniques described herein can reduce the adverse effects of grating lobes by obtaining an initial SAR image using a back-projection algorithm. Aliasing effects (e.g., false detections) in this initial image may be common due to the limitations of an SAR system moving at non-uniform speeds. A refined image is produced from the initial image by applying a de-aliasing filter to the initial image. The refined image may have reduced or eliminated false detections that attribute to aliasing effects, resulting in a better representation of the environment of the vehicle.Type: ApplicationFiled: October 15, 2021Publication date: January 19, 2023Inventors: Le Zheng, Yu Zhang, Edgar Ortiz, Clinton Colby
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Patent number: 11507761Abstract: In one example in accordance with the present disclosure a device is described. The device includes at least two memristive cells. Each memristive cell includes a memristive element to store one component of a complex weight value. The device also includes a real input multiplier coupled to the memristive element to multiply an output signal of the memristive element with a real component of an input signal. An imaginary input multiplier of the device is coupled to the memristive element to multiply the output signal of the memristive element with an imaginary component of the input signal.Type: GrantFiled: February 25, 2016Date of Patent: November 22, 2022Assignee: Hewlett Packard Enterprise Development LPInventors: Brent Buchanan, Le Zheng
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Publication number: 20220252542Abstract: The disclosed embodiments relate to nanotechnology and to nano-electronics and molecular electronic sensors. In an exemplary embodiment, a nano-sensor having a nanoparticle complex attached at each end to a respective nano-electrode. An exemplary nanoparticle complex includes a biomolecule coupled at each end to a metallic nanoparticle to form a dumbbell-shaped molecular bridge.Type: ApplicationFiled: January 13, 2022Publication date: August 11, 2022Applicant: Roswell Biotechnologies, Inc.Inventors: Barry Merriman, Sonal Jain, Drew Kennedy, Venkatesh Alagarswamy Govindaraj, Calvin Gardner, Chulmin Choi, Namseok Park, Richard Dubielzig, Le Zheng, David Porras, Paul Pan
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Patent number: 11366212Abstract: A two-step optimization method for scheduling transmissions in an MIMO (multi-input multi-output) includes determining a first phase code for each transmission according to a first equation, placing each first phase code in a set of first phase codes, and determining a cost function of the set of first phase codes, determining a second phase code for each transmission according to a second equation, determining an updated cost function corresponding to replacing each of the first phase codes with a corresponding one of the second phase codes, and determining which set of phase codes has a smaller cost function.Type: GrantFiled: February 12, 2020Date of Patent: June 21, 2022Assignee: Aptiv Technologies LimitedInventors: Le Zheng, Yu Zhang, Xin Zhang
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Patent number: 11329939Abstract: A method, computer program product and computer system to generate a spatial visualization of topics contained in messages data is provided. A processor retrieves message data associated with a user. A processor determines one or more topics represented by the message data. A processor generates a spatial visualization of one or more user interface elements, where the spatial visualization includes a size and a location for the one or more user interface elements. A processor displays one or more user interface elements corresponding to the one or more topics.Type: GrantFiled: June 26, 2017Date of Patent: May 10, 2022Assignee: International Business Machines CorporationInventors: Xiao Xia Mao, Xin Feng, Ya Qing Chen, Wei Jun Zheng, Zhen Hong Ding, Chuan Le Zheng, Su Liu
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Patent number: 11323402Abstract: A method, computer program product and computer system to generate a spatial visualization of topics contained in messages data is provided. A processor retrieves message data associated with a user. A processor determines one or more topics represented by the message data. A processor generates a spatial visualization of one or more user interface elements, where the spatial visualization includes a size and a location for the one or more user interface elements. A processor displays one or more user interface elements corresponding to the one or more topics.Type: GrantFiled: October 27, 2017Date of Patent: May 3, 2022Assignee: International Business Machines CorporationInventors: Xiao Xia Mao, Xin Feng, Ya Qing Chen, Wei Jun Zheng, Zhen Hong Ding, Chuan Le Zheng, Su Liu
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Publication number: 20220120847Abstract: This document describes techniques and systems of a radar system with modified orthogonal linear antenna subarrays and an angle-finding module. The described radar system includes a first one-dimensional (1D) (e.g., linear) subarray; a second 1D subarray positioned orthogonal to the first 1D subarray; and a two-dimensional (2D) subarray. Using electromagnetic energy received by the first 1D subarray and the second 2D subarray, azimuth angles and elevation angles associated with one or more objects can be determined. The radar system associates, using electromagnetic energy received by the 2D subarray, pairs of an azimuth angle and an elevation angle to the respective objects. In this way, the described systems and techniques can reduce the number of antenna elements while maintaining the angular resolution of a rectangular 2D array with similar aperture sizing.Type: ApplicationFiled: October 20, 2020Publication date: April 21, 2022Inventors: Yu Zhang, Le Zheng, Zhengzheng Li, Xin Zhang
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Patent number: 11232352Abstract: A circuit for a neuron of a multi-stage compute process is disclosed. The circuit comprises a weighted charge packet (WCP) generator. The circuit may also include a voltage divider controlled by a programmable resistance component (e.g., a memristor). The WCP generator may also include a current mirror controlled via the voltage divider and arrival of an input spike signal to the neuron. WCPs may be created to represent the multiply function of a multiply accumulate processor. The WCPs may be supplied to a capacitor to accumulate and represent the accumulate function. The value of the WCP may be controlled by the length of the spike in signal times the current supplied through the current mirror. Spikes may be asynchronous. Memristive components may be electrically isolated from input spike signals so their programmed conductance is not affected. Positive and negative spikes and WCPs for accumulation may be supported.Type: GrantFiled: July 17, 2018Date of Patent: January 25, 2022Assignee: Hewlett Packard Enterprise Development LPInventors: Brent Buchanan, John Paul Strachan, Le Zheng
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Publication number: 20220003854Abstract: This document describes techniques and systems to resolve return signals among pixels in lidar systems. The described lidar system transmits signals with different waveforms for consecutive pixels to associate return signals with their corresponding pixels. During a detection window, the lidar system receives a return signal and compares it in the frequency domain to at least two template signals. The template signals include the waveform of an initial pixel and a subsequent pixel of two consecutive pixels, respectively. The lidar system then determines, based on the comparison to the template signals, the pixel to which the return signal corresponds and determines a characteristic of an object that reflected the return signal. In this way, the lidar system can confidently resolve detections to reduce the time between pixels. This improvement allows the described lidar system to operate at faster scanning speeds and realize a faster reaction time for automotive applications.Type: ApplicationFiled: July 2, 2020Publication date: January 6, 2022Inventors: Michael DeLaus, Chenghui Hao, Le Zheng, Roman Dietz
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Patent number: 11158370Abstract: In one example in accordance with the present disclosure a memristive bit cell is described. The memristive bit cell includes a memristive device switchable between states. The memristive device is to store information. The memristive bit cell also includes a first switch regulating component coupled to the memristive device. The first switch regulating component enforces compliance of the memristive device with a first property threshold when switching between states in a first direction. The first property threshold corresponds to a state of the memristive device. The memristive bit cell also includes a second switch regulating component coupled to the memristive device. The second switch regulating component enforces compliance of the memristive device with a second property threshold when switching between states in a second direction. The second property threshold corresponds to a state of the memristive device.Type: GrantFiled: January 26, 2016Date of Patent: October 26, 2021Assignee: Hewlett Packard Enterprise Development LPInventors: Emmanuelle J. Merced Grafals, Brent Buchanan, Le Zheng