Patents Examined by A. Ahmed
  • Patent number: 12381480
    Abstract: The present invention relates to an AC-DC power converter which includes a resonant DC-DC converter and a charge pump circuit. The charge pump circuit is configured to perform power factor correction of the AC-DC power converter by drawing current pulses at a switching frequency of the converter from an AC line voltage such that electrical charges of the current pulses vary substantially proportionally with instantaneous amplitude of the AC line voltage.
    Type: Grant
    Filed: December 23, 2023
    Date of Patent: August 5, 2025
    Assignee: Danmarks Tekniske Universitet
    Inventors: Ahmed Morsi Ammar, Yasser A. A. Nour, Arnold Knott
  • Patent number: 12354255
    Abstract: A generation method of an image defect detecting system is provided. Said method includes: obtaining a plurality of validation difference scores respectively associated with a plurality of validation images based on a semi-supervised learning model; calculating a threshold value based on the plurality of validation difference scores; creating a standby inference model based on the plurality of validation difference scores; obtaining a testing difference score associated with a testing image based on the semi-supervised learning model; adjusting the threshold value by the standby inference model in response to the testing difference score and the threshold value; and outputting data comprising the testing difference score.
    Type: Grant
    Filed: October 19, 2022
    Date of Patent: July 8, 2025
    Assignee: WISTRON CORP.
    Inventors: Ya-Cheng Tsai, Che-Wei Mei
  • Patent number: 12347098
    Abstract: Disclosed is a method for determining a number of product quality incidents based on a convolutional neural network, the method includes the following steps: building an appearance quality dataset, building a quality evaluation model, and analyzing a number of product quality incidents; a preset model and a preset optimized model are trained and validated according to the built appearance quality dataset to obtain initial quality evaluation models, which are filtered to obtain a quality evaluation model according to model performance coefficient and comprehensive model coefficient, product appearance defect data are obtained according to appearance defect data detected and obtained by the quality evaluation model, appearance defect ratio and significant appearance defect ratio of the products under quality inspection are obtained according to the product appearance defect data, and a number of product quality incidents of the products under quality inspection is finally obtained according to an incident occur
    Type: Grant
    Filed: March 31, 2025
    Date of Patent: July 1, 2025
    Assignee: China National Institute of Standardization
    Inventors: Yuwei Lu, Yunjie Zhi, Jingna Yang
  • Patent number: 12338686
    Abstract: A method of quantifying wear data on a well tool includes scanning a used well tool with a scanner and thereby generating a scanned file of the used well tool, the scanner being in communication with a computer system, aligning the scanned file with an original solid model file of the used well tool and thereby obtaining and displaying an overlay output, wherein the solid model file is stored on the computer system and identifies individual wear parts of the used well tool, creating and placing a digital feature on one or more of the individual wear parts displayed on the overlay output, and calculating deviation between the solid model file and the scanned file at each digital feature of the one or more individual wear parts and thereby determining material removed from the individual wear parts of the used well tool.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: June 24, 2025
    Assignee: Taurex Drill Bits, LLC
    Inventors: Dustin Lyles, Jerry Rhoades, Warren Dyer, Matthew Mumma
  • Patent number: 12327428
    Abstract: An authentication device includes a feature amount generation unit for generating a feature amount of an object in an image, a registered data acquisition unit for acquiring registered data where a feature amount of a predetermined object in an image is registered in advance as a registered feature amount, and NG information associated with the registered feature amount unsuitable for authentication is recorded, a similarity acquisition unit for acquiring a similarity between the predetermined feature amount and the registered feature amount acquired from the registered data acquisition unit, and a determination unit for performing authentication if the degree of similarity acquired by the degree of similarity acquisition unit satisfies a predetermined authentication condition, and even if the degree of similarity satisfies the predetermined authentication condition, if the NG information associated with the registered feature amount is acquired, the predetermined feature amount is not authenticated.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: June 10, 2025
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Shogo Kinugawa
  • Patent number: 12323062
    Abstract: A multi-phase switching regulator and a switching regulating method using the multi-phase switching regulator employ an interleaving circuit. The multi-phase switching regulator includes: a first regulating circuit configured to receive an input voltage and generate a first sub-output voltage with a first phase by transforming the input voltage in response to a first set signal; a second regulating circuit configured to receive the input voltage and generate a second sub-output voltage with a second phase by transforming the input voltage in response to a second set signal; and the interleaving circuit configured to repeatedly and sequentially generate the first set signal and the second set signal by comparing a reference voltage with an output voltage generated based on the first sub-output voltage and the second sub-output voltage.
    Type: Grant
    Filed: April 6, 2023
    Date of Patent: June 3, 2025
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sun-Kyu Lee, Nguyen Huyhieu, Dong-Jin Keum, Je-Hyung Yoon, Hee-Seok Han
  • Patent number: 12323073
    Abstract: Described herein is a method of operating a power electronic converter device for an electrical power conversion system. The power electronic converter device includes a converter circuit including an input side, an output side, a first converter, and at least one second converter. The second converter includes at least one floating cell with a DC intermediate circuit and semiconductor devices. The method includes: switching the semiconductor devices of the floating cell at switching instants determined with optimized pulse patterns or carrier-based pulse width modulation; determining a fundamental voltage component for the floating cell; and generating the fundamental voltage component in the actual voltage of the floating cell by modifying the switching instants, such that a voltage VC AF of the DC intermediate circuit is lying in a given reference voltage range for balancing the DC intermediate circuit of the floating cell.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: June 3, 2025
    Assignee: ABB Schweiz AG
    Inventors: Ioannis Tsoumas, Tobias Geyer, Mario Schweizer, Eduardo Rohr, Frederick Kieferndorf, Wim Van-der-Merwe, Manuel Vetterli, Christian Meier
  • Patent number: 12315124
    Abstract: A circuit device includes an image processing circuit that receives target image data by adding effective image data to known image data, executes image processing on the target image data, and outputs processed effective image data corresponding to a processed effective image and processed known image data corresponding to a processed known image. The processed known image data has a CRC expected value calculated in advance. A CRC calculation circuit obtains a CRC value based on the processed known image data. A determination circuit determines correctness of the image processing by comparing the CRC value with the CRC expected value of the processed known image data. The processed effective image is located in an effective image region that is displayed on a screen. The processed known image is located in a non-display region that is not displayed on the screen.
    Type: Grant
    Filed: February 9, 2022
    Date of Patent: May 27, 2025
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Sebdani Mahmood Mazrouei, Kumar Anandabairavasamy Anand, Hideki Matsuda
  • Patent number: 12316244
    Abstract: Example three-level inverters, control methods, and systems are provided. One example three-level inverter includes a first bus capacitor, a second bus capacitor, a power conversion circuit, and a controller. The first bus capacitor is connected in the middle of the current bus and the power conversion circuit. The power conversion circuit is configured to convert a direct current into a three-phase alternating current for output. The controller is configured to determine a balance reference by using a difference between absolute values of voltages of the positive and negative direct current buses and an even harmonic current in a grid-connected current, where the balance reference is used to enable the three-level inverter to generate a current signal for balancing the voltages of the positive and negative direct current buses.
    Type: Grant
    Filed: March 6, 2023
    Date of Patent: May 27, 2025
    Assignee: Huawei Digital Power Technologies Co., Ltd.
    Inventors: Xinyu Yu, Fei Xu, Kai Xin, Zhiwu Xu, Lin Li, Haibin Guo
  • Patent number: 12299974
    Abstract: The present disclosure provides a transmission line defect identification method based on a saliency map and a semantic-embedded feature pyramid, including the following steps: step 1: cleaning and classifying a dataset; step 2: generating a super-resolution image for a small target of a transmission line by using an Electric Line-Enhanced Super-Resolution Generative Adversarial Network (EL-ESRGAN) model; step 3: performing image saliency detection on the dataset by constructing a U2-Net; step 4: performing data augmentation on the dataset by using GridMask and random cutout algorithms based on a saliency map, and generating a classified dataset; and step 5: performing image classification on a normal set and a defect set by using a ResNet34 classification algorithm and a deep semantic embedding (DSE)-based feature pyramid classification network.
    Type: Grant
    Filed: December 14, 2022
    Date of Patent: May 13, 2025
    Assignee: Zhejiang University
    Inventors: Qiang Yang, Chao Su, Yuan Cao, Di Jiang, Hao Xu, Kaidi Qiu
  • Patent number: 12299843
    Abstract: A computer-implemented method, according to various embodiments, includes receiving images such as photographs and videos from one or more portable computing devices associated with one or more individuals (e.g., construction workers or landscapers) while the portable computing devices are in a particular position within a particular location at a particular time. The method further includes determining a virtual position within a representation of the particular location that generally corresponds to the particular position and combining the images with the representation to generate an enhanced representation of the particular location. This may allow, for example, owners of a particular property to track and quickly understand construction and landscaping work that has been done on their property and to easily contact those individuals regarding that work.
    Type: Grant
    Filed: October 20, 2023
    Date of Patent: May 13, 2025
    Assignee: EchoSense, LLC
    Inventor: Mark Thomas
  • Patent number: 12299776
    Abstract: A computer implemented method (82) for colour video processing, the method comprising: receiving a CFA image from a CFA imaging device, wherein the CFA image comprises CFA image pixels defining a plurality of image regions, each image region having at least one pixel of a first colour and at least one pixel of a second colour, at least one image region representing a portion of an object; receiving a full colour image from a colour imaging device, wherein the full colour image represents the portion of the object; storing the full colour image in a memory; isolating pixels of the first colour of the CFA image to generate a first colour channel comprising pixels of the first colour channel; isolating pixels of the first colour of the full colour image to generate a second colour channel comprising pixels of the second colour channel; processing the pixels of the first colour channel using a first computer vision algorithm to generate first image metadata; processing the pixels of the second colour channel usin
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: May 13, 2025
    Assignee: Rovco Limited
    Inventors: Lyndon Hill, Iain Andrew Wallace
  • Patent number: 12294295
    Abstract: Provided are electrical circuits and methods for power factor correction. An example method includes receiving, by converter, an input voltage at a fundamental frequency and generating an output voltage; generating, based on the output voltage, a first measurement signal; subtracting a first reference signal from the first measurement signal to obtain a first error signal; generating an adaptive current sense signal, generating a reference voltage based on the input voltage, subtracting the reference voltage from the current sense signal thus generating a second measurement signal to control the current measurement; subtracting the second measurement signal from the input voltage to obtain a difference signal, wherein the difference signal is largely minimized by removing overtones of the fundamental frequency; generating, based on the difference signal, a second error signal; using a sum of the second error signal as a first order correction to the first error signal to regulate the converter.
    Type: Grant
    Filed: February 28, 2023
    Date of Patent: May 6, 2025
    Inventor: Robert S. Wrathall
  • Patent number: 12293528
    Abstract: This application discloses a video data processing method and apparatus, a computer device, and a storage medium, and belongs to the field of video processing technologies. According to this application, when a second video is embedded into a target sub-image of a first video, a position movement of the target sub-image in the first video is obtained based on an artificial intelligence technology. According to the position movement, motion blur processing is performed on the picture of the second video correspondingly, so that the second video, after being embedded into the first video, will have the same motion blur effect as the target sub-image in the first video. Therefore, the first video and the second video can be better fused, and a better video transition effect can be obtained.
    Type: Grant
    Filed: August 5, 2022
    Date of Patent: May 6, 2025
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventor: Ziqiang Yu
  • Patent number: 12294316
    Abstract: A controller for a power converter includes a generator module which generates a sequence of pulses each having a width defined by a rise moment and fall moment stored in respective RM and FM registers. The sequence of pulses have a repetition rate that is modulated by a repetition period value stored in a RP register. A memory of the controller has tables of rise moment values, fall moment values and repetition period values configured to be written into the RM, FM and RP registers respectively. A direct memory access (DMA) module of the controller is configured to write rise moment, fall moment, and repetition period values from the respective memory table into the RM, FM, and RP registers respectively, in response to a DMA trigger. A core coupled to the DMA module is configured to write the rise moment, fall moment, and repetition period values into the memory tables.
    Type: Grant
    Filed: March 31, 2023
    Date of Patent: May 6, 2025
    Assignee: NXP USA, Inc.
    Inventors: Lukas Vaculik, Radek Holis, Ivan Sieklik
  • Patent number: 12294315
    Abstract: It is an object to provide an inverter device capable of appropriately protecting power semiconductor elements and further realizing an optimal operation considering a withstand voltage. The inverter device includes a junction temperature estimate calculating unit which adds a temperature rise value ?T obtained from a loss P of power semiconductor elements to a temperature Tth detected by a temperature sensor to estimate a junction temperature Tj. When the junction temperature Tj is estimated, the junction temperature estimate calculating unit performs a correction in the direction of excluding an influence of heat generation of other electronic components other than the power semiconductor elements, and a wiring pattern of a control board on a temperature sensor.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: May 6, 2025
    Assignee: SANDEN CORPORATION
    Inventor: Atsushi Saito
  • Patent number: 12282331
    Abstract: A mobile cleaning robot includes a cleaning head configured to clean a floor surface in an environment, and at least one camera having a field of view that extends above the floor surface. The at least one camera is configured to capture images that include portions of the environment above the floor surface. The robot includes a recognition module is configured to recognize objects in the environment based on the images captured by the at least one camera, in which the recognition module is trained at least in part using the images captured by the at least one camera. The robot includes a storage device is configured to store a map of the environment. The robot includes a control module configured to control the mobile cleaning robot to navigate in the environment using the map and operate the cleaning head to perform cleaning tasks taking into account of the objects recognized by the recognition module.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: April 22, 2025
    Assignee: iRobot Corporation
    Inventors: Christopher V. Jones, Gary Ellis Hall, Steven J. Baron, Brent Hild, Stefan Zickler, John Sinnigen
  • Patent number: 12275379
    Abstract: An automatic vehicle window cleaning method and apparatus includes obtaining a vehicle window image; determining a dark channel image corresponding to a single frame of vehicle window image; further determining, based on a quantity of pixels whose gray values exceed a preset gray threshold in the dark channel image and/or definition of the dark channel image, that a first-type foreign object exists on a vehicle window, and/or determining, based on RGB values of pixels in i consecutive frames of vehicle window images, that a second-type foreign object exists on the vehicle window, and controlling a cleaning tool to remove a foreign object. The foreign object includes the first-type foreign object and/or the second-type foreign object.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: April 15, 2025
    Assignee: SHENZHEN YINWANG INTELLIGENT TECHNOLOGIES CO., LTD.
    Inventors: Junhao Zhang, Gailiang Wang, Wei Huang, Wenkang Xu, Xiaolin Huang
  • Patent number: 12277682
    Abstract: A system for intelligent image dehazing based on haze type classification. The system receives a hazy image and classifies the haze type using either a Single Selective Classifier (SSC) or a Hybrid Conditional Classifier (HCC), based on user preference. If SSC is selected, a specific single model is used for classification. If HCC is selected, all pre-trained and pre-defined models are used. The system then selects a suitable specialized dehazer based on the predicted haze type and applies it to the input image to mitigate the effects of the haze. The system is flexible, allowing for adjustments to various parameters as per the users' requirements and target application domains.
    Type: Grant
    Filed: December 19, 2024
    Date of Patent: April 15, 2025
    Assignee: IMAM MOHAMMAD IBN SAUD ISLAMIC UNIVERSITY
    Inventors: Md Tanvir Islam, Ik Hyun Lee, Abdul Khader Jilani Saudagar, Abdullah Altameem, Mohammed Abaoud, Khan Muhammad
  • Patent number: 12272125
    Abstract: A learning device performs learning a facial recognition model so as to further reduce a triplet loss that uses a first facial image, a second facial image that is a candidate for an adversarial example of a same person as the first facial image, and a third facial image that is a candidate for an adversarial example of a different person than the first facial image.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: April 8, 2025
    Assignee: NEC CORPORATION
    Inventor: Kosuke Yoshida