Patents Assigned to Hong Kong Applied Science and Technology Research Institute Co. Ltd. (ASTRI)
  • Patent number: 12298469
    Abstract: Systems and methods which provide single nanostructure-integrated metalens configurations implementing projector and light shaper functionality are described. A single nanostructure-integrated metalens may comprise an optical substrate having a preconfigured mapping of integrated nanostructures providing metasurfaces for modulating the behaviors of electromagnetic waves to implement a thin, flat lens. A period distance for the nanostructures, a height of the nanostructures, and a quantization for lateral sizes of the nanostructures may be selected for a particular single nanostructure-integrated metalens configuration. A first phase map may be computed with respect to structured light generation and a second phase map may be computed with respect to light collimation, wherein fusion of these phase maps may be used to define a preconfigured mapping for the nanostructures of a single nanostructure-integrated metalens implementation.
    Type: Grant
    Filed: May 17, 2022
    Date of Patent: May 13, 2025
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Yunhe Lai, Haoyuan Bai, Qingyi Yang, Jinbo Jiang
  • Patent number: 12160923
    Abstract: Described is a method and device for detecting a DTX state at a UCI receiver in a wireless communication system. The method comprises receiving a linear block encoded signal on an uplink at said UCI receiver and processing the received signal after resource element (RE) demapping to generate a soft bit sequence {right arrow over (s)}. The method includes selecting a plurality of bits in said generated soft bit sequence {right arrow over (s)} as comparison bits and comparing said selected comparison bits to corresponding bits in a reconstructed soft bit sequence {right arrow over (r)}. The reconstructed soft bit sequence {right arrow over (r)} is generated from a plurality of bits selected as reconstruction bits in said generated soft bit sequence {right arrow over (s)}.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: December 3, 2024
    Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd
    Inventors: Yaming Luo, Man Wai Kwan, Xiangyu Liu, Yanda Mou, Kong Chau Tsang
  • Patent number: 12137488
    Abstract: Described is a method of setting up a direct connection between edge sites on a 5G communications network. The method comprises: configuring 5G network functions (NFs) in the 5G communications network; configuring 5G NFs at the edge sites, if not already configured; and based on said configured NFs, setting up a direct tunnel between the edge sites according to a pre-defined tunnel policy.
    Type: Grant
    Filed: February 17, 2022
    Date of Patent: November 5, 2024
    Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd
    Inventors: Xiao Dong Wang, Zhicheng Luo, Wai Lok Wong, Xue Feng, Liang Dong, Shijun Fan
  • Patent number: 12135824
    Abstract: Systems and methods which provide for auditable data are described. Data management systems of embodiments facilitate storage and management of various data (e.g., information regarding transactions, customers, infrastructure, geographic locations, medical records, etc.) for supporting data creation, manipulation, storing, and/or sharing by and among different parties. Users may create new and/or update data, digitally sign the data, and store the digital signature and data on immutable storage using data structures of a data management system. A data structure in which data and associated metadata is stored on immutable storage in association with a digital signature corresponding to the data and user may be used in providing data traceability and auditability. Snapshots of merged data may be implemented with respect to data having many updates to avoid delays in merging update data for queries for that data. A collaborative rating mechanism may provide trust levels with respect to the data.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: November 5, 2024
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Tak Wing Lam, Kwok Fai Ng, Tak Fuk Wong
  • Patent number: 12125240
    Abstract: Described is a method of calibrating a camera. The method comprises defining an area observed in a field of view (FOV) of the camera as a region of interest (ROI). The method includes selecting a plurality of physical reference points in said ROI and obtaining for each reference point physical position coordinates. The method also includes obtaining from said camera FOV or camera image data pixel locations for each point of reference and pairing each pixel location with the physical position coordinates of its respective reference point. Then, a relationship is derived from the paired pixel locations and physical position coordinates to enable a selected or identified pixel location in the camera FOV or camera image data to be transformed to physical position coordinates for a corresponding physical location in said ROI.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: October 22, 2024
    Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd
    Inventors: Yao Cheng Liang, Ho Man Cheng, Ka Ho Mui
  • Patent number: 12103186
    Abstract: Described is a method of controlling movement of a mobile robot in the event of a localization failure. The method comprises, on an occurrence of the localization failure, receiving an image from an image sensor of the mobile robot. The method includes splitting received image into at least two vertical portions and determining if one of said at least two vertical portions is indicative of a passable path. The method includes controlling the mobile robot to travel along the passable path indicated by a selected one of said at least two vertical portions.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: October 1, 2024
    Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd
    Inventors: Zhao Li, Wei Han, Yue Sun
  • Patent number: 12096280
    Abstract: Provided is a method and system for controlling data transmission in a 5G-V2X network. The 5G-V2X network has at least one defined geographical area including a plurality of traffic sensing devices (TSDs). Each of the TSDs is configured to provide data over one or more 5G channels to a V2X processing system via an edge gateway module (EGW) of the defined geographical area. The EGW includes a transmission controller (TC). The method comprises the TC dynamically adjusting a data transmission frequency of at least one TSD of the plurality of TSDs in accordance with a transmission control policy.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: September 17, 2024
    Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd
    Inventors: Jiashi Feng, Jianjun Zhang, Linhuan Chen, Zigan Zhou, Hang Chen, Dongzhe Su, Shijun Fan
  • Patent number: 12055601
    Abstract: Described is a method of identifying a short-circuit (SC) like event in a circuit breaker (CB). The method comprises sampling an incoming current to the CB to determine a maximum value of a slope of a curve of the incoming current. The method includes sampling the incoming current again before a level of the incoming current reaches a predetermined, preset, selected, or calculated SC threshold value THSC for the CB. The method involves determining from the sampled incoming current that a value of the slope of the incoming current has changed from its maximum slope value to a lower slope value to thereby determine that the incoming current is indicative of a SC like event and does not comprise a real SC event.
    Type: Grant
    Filed: October 5, 2022
    Date of Patent: August 6, 2024
    Assignee: Hong Kong Applied Science And Technology Research Institute Co. Ltd
    Inventors: Xin Li, Kwong Yin Tsang, Qingchun Li, Tin Ho Li
  • Patent number: 12009494
    Abstract: Systems and methods in which a thermal conductive composite comprises a non-uniform heat absorption profile of a thermal reactive material are described. Thermal conductive composites herein may be utilized in thermal regulatory modules with a gradient structure configured to transfer heat energy away from an area near a heat source to an area with a relatively large latent heat absorbing capacity. Thermal conductive material may be provided in a frame structure having lower porosity in a first region more near a heat source and higher porosity in a second region more distant from the heat source. A thermal reactive material may be deposited so as to be disposed within the pores of the thermal conductive material frame structure wherein the density of the thermal reactive material in the first region of the thermal conductive composite is lower than that at the second region of the thermal conductive composite.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: June 11, 2024
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Jing Xiang, Pau Yee Lim, Laiyong Xie
  • Patent number: 11907403
    Abstract: Embodiments of the present disclosure provide hierarchical, differential privacy enhancements to federated, machine learning. Local machine learning models may be generated and/or trained by data owners participating in the federated learning framework based on their respective data sets. Noise corresponding to and satisfying a first privacy loss requirement are introduced to the data owners' respective data sets, and noise corresponding to and satisfying a first privacy loss requirement are introduced to the local models generated and/or trained by the data owners. The data owners transmit model data corresponding to their respective local models to a coordinator, which in turn aggregates the data owners' model data. After introducing noise corresponding to and satisfying a third privacy loss requirement to the aggregated model data, the coordinator transmits the aggregated model data to the data owners to facilitate updating and/or re-training on their respective machine learning models.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: February 20, 2024
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Jitao Ou, Jiazheng Yan, Wenjun Zhuang, Kam Hong Shum
  • Patent number: 11843322
    Abstract: The invention provides a power converter apparatus for converting an alternating current (AC) power input to a direct current (DC) power output. The apparatus comprises a plurality of n single-phase power converting circuits arranged in parallel, where n is equal to or greater than 2, wherein one of said n single-phase power converting circuits comprises a single-stage AC/DC converter module having an operating AC/DC converter; and each of a remaining n?1 of said single-phase power converting circuits comprises a two-stage converter module having an AC/DC converter as an input stage and a DC/DC transformer as an output stage.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: December 12, 2023
    Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd
    Inventors: Sui Pung Cheung, Qing Chun Li, Tin Ho Li
  • Patent number: 11625860
    Abstract: Described is a method of calibrating a camera. The method comprises obtaining geographical coordinates of a selected physical point location within an image view of the camera and measuring an angle between an x-axis of a real-world coordinate system passing through said selected point location with respect to true north. The method includes using said obtained geographical coordinates, said measured angle, and projection data derived from characteristics of the camera to derive modified projection data for transforming a two-dimensional pixel coordinate system of the camera image view into a three-dimensional geographical coordinate system for point locations within the image view of the camera.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: April 11, 2023
    Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd.
    Inventors: Ho Man Cheng, Yao Cheng Liang, Ka Ho Mui
  • Patent number: 11611987
    Abstract: Described is a method and device for detecting a discontinuous transmission (DTX) state or a partial DTX state at an uplink control information (UCI) receiver in a wireless communication system. The method comprises receiving a linear block encoded signal on an uplink (UL) at said UCI receiver and processing said signal after resource element (RE) demapping to obtain a soft bit sequence. The soft bit sequence is then transformed into multiple sub-sequences. Correlation metrics are determined for two or more of the multiple sub-sequences or two or more sub-sequence groups derived from the multiple sub-sequences or sequence segments derived from the sub-sequence groups. Then, a determination is made if a DTX state has occurred by evaluating the determined correlation metrics.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: March 21, 2023
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd
    Inventors: Yaming Luo, Yunxiang Yao, Man Wai Kwan, Xiangyu Liu, Shuaimin Jiang, Kong Chau Tsang
  • Patent number: 11575189
    Abstract: Described is a bandpass filter comprising a multi-layered body, a first resonator conductor formed on a first layer of the body and a second resonator conductor formed on a second, tower layer of the body. The first resonator conductor and the second resonator conductor comprise a first coupling area formed by only a partial overlap of the first resonator conductor and the second resonator conductor. A length of each said resonator conductor is in the range of ?g/3 to ?g/5, where ?g. is a center wavelength of the bandpass filter passband.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: February 7, 2023
    Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd
    Inventors: Xiaolong Huang, Yujiang Wu, Yuxian Zhang, Eric Kong Chau Tsang
  • Patent number: 11456961
    Abstract: Described is a method of processing data packets in a communications network. The method comprises receiving a first data packet of a data packet flow from a network device and determining an instruction set for processing said first data packet. A flow key for said first data packet is determined. The first data packet is processed according to the determined instruction set. The method includes receiving a subsequent data packet and determining if a flow key of said subsequent data packet matches said flow key of said first data packet. If yes, the subsequent data packet is processed using the instruction set determined for said first data packet.
    Type: Grant
    Filed: April 12, 2021
    Date of Patent: September 27, 2022
    Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd
    Inventors: Ka Ho Mui, Wei Chen, Jianjun Zhang, Liang Xia, Jingwei Liu, Liang Dong
  • Patent number: 11457502
    Abstract: Described is a method and device for detecting a discontinuous transmission state (DTX) at an uplink control information (UCI) receiver device in a wireless communication system. The method involves receiving a linear block encoded signal on an uplink (UL) at said UCI receiver device and processing the received linear block encoded signal after resource element (RE) dernapping to obtain channel estimation data. The method includes determining from said channel estimation data a DTX metric for one or more selected resource blocks (RBs) and determining if a DTX state has occurred by comparing the determined DTX metric to a calculated, selected, or predetermined threshold.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: September 27, 2022
    Assignee: Hong Kong Applied Science And Technology Research Institute Co., Ltd
    Inventors: Yaming Luo, Yunxiang Yao, Man Wai Kwan, Xiangyu Liu, Yiu Wing Edwin Chan, Kong Chau Tsang
  • Patent number: 11435584
    Abstract: Systems and methods providing optical structures providing a large field of view (FOV) for personal portable displays are described. An optical structure of embodiments comprises a catadioptric optical configuration configured to produce a magnified curved intermediate image, wherein the magnified curved intermediate image is furthered magnified with proper reflection angle and transmitted to viewer's eye. The catadioptric optical configuration may comprise two curved mirrors and a polarization prism. Optical structures comprising such catadioptric optical configurations may utilize relatively small sized image sources to produce a large FOV. Such optical structures are well suited for use in large FOV optical see through (OST) head-mounted displays (HMDs).
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: September 6, 2022
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Dehua Liu, Chun Yip Wong, Kin Lung Chan
  • Patent number: 11420334
    Abstract: The present disclosure relates to methods, devices, and systems for selecting a candidate six dimensional pose hypothesis from among a plurality of six dimensional pose hypotheses. For example, the systems, devices, and methods described herein may be used to quickly, accurately, and precisely select a candidate six dimensional pose hypothesis from among a plurality of six dimensional pose hypotheses so that the selected candidate six dimensional pose hypothesis substantially overlaps with an image of an object to be identified from an image of a plurality of objects. In this manner, an object can be identified from among a plurality of objects based on the selected candidate six dimensional pose hypothesis.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: August 23, 2022
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Wing To Ku, Wenguan Wang
  • Patent number: 11418342
    Abstract: Systems and methods which provide data exchange using a distributed ledger, wherein data is exchanged off-chain and information for accessing the off-chain data is exchanged through the blockchain, are disclosed. Embodiments may provide a hybrid blockchain data exchange platform storing large amounts of data (e.g., IoT data) in a data server outside of the blockchain, wherein a data consumer may obtain data from the data server using a token obtained from the blockchain. Embodiments of a hybrid blockchain data exchange platform provide for accuracy and security of the data without requiring storage of the full contents of the data within the blockchain, and/or provide data exchange in which the irrefutability of the data exchanged is ensured.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: August 16, 2022
    Assignee: Hong Kong Applied Science and Technology Research Institute Co.. Ltd.
    Inventors: Tak Wing Lam, Kai Wah Yeung, Tak Fuk Wong
  • Patent number: 11402326
    Abstract: Systems and methods in which multi-dimensional metric monitoring is used with respect to multi-wavelength scattering for smoke detection are described. A multi-dimensional metric may dynamically track a slope of a relationship between scattered light of multiple wavelengths of scattered light being monitored. A multi-dimensional metric monitoring smoke detection algorithm may utilize multi-dimensional thresholds with respect to monitoring of the multi-dimensional metric for initiating a fire alarm and resetting the fire alarm. An optical measuring chamber utilized for providing multi-wavelength scattering signals utilized in deriving a multi-dimensional metric for smoke detection may be configured for wide-scattering-angle signal collection, such as using a light trapping sub-chamber having a light-guide diaphragm assembly configured for wide-scattering-angle signal collection.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: August 2, 2022
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Zhinan Yu, Chun Chung Chan, Jiangquan Mai, Fangyi Shi