Patents by Inventor Shun Leung

Shun Leung 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).

  • Patent number: 11932043
    Abstract: A device includes at least one transient image having optical properties which vary depending on the angle of observation, with the image(s) consisting of a set of three-dimensional microstructures arranged in a plurality of subsets. Each subset consists of microstructures having an equivalent or identical planar angle ?. A security document can include such a device and the device can be used as a security element.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: March 19, 2024
    Assignee: KARMIC SÀRL
    Inventor: Yit-Shun Leung Ki
  • Publication number: 20230342912
    Abstract: A multi-functional, computer-aided gastroscopy system optimized with integrated AI solutions is disclosed. The system makes use of multiple deep-learning neural models to achieve low latency and high-performance requirements for multiple tasks. The optimization is made at three levels: architectural, modular and functional level. At architectural level, the models are designed in such a way that it is able to accomplish HP infection classification and detection of some lesions for one inference in order to reduce computation costs. At modular level, as a sub-model of HP infection classification, the site recognition model is optimized with temporal information. It not only improves the performance of HP infection classification, but also plays important roles for lesion detection and procedure status determination. At functional level, the inference latency is minimized by configuration and resource aware optimization.
    Type: Application
    Filed: April 25, 2022
    Publication date: October 26, 2023
    Inventors: Xuejian HE, Lu WANG, Ping Shun LEUNG
  • Publication number: 20230243184
    Abstract: A telescopic electromechanical dual-control smart lock includes: a lock cylinder mechanism, a transmission mechanism and a power supply control mechanism; wherein the lock cylinder mechanism comprises a bolt, a lock core PCB (printed circuit board), a positive electrode sheet, a negative electrode sheet and a first spring; the power supply control mechanism comprises a main control PCB and a detachable battery; wherein the positive electrode sheet, the negative electrode sheet and the transmission mechanism are electrically connected with the lock core PCB respectively; wherein a first end of the transmission mechanism is pressed against an end of the first spring; a second end of the transmission mechanism is fixedly connected with the bolt; is the lock cylinder mechanism and the transmission mechanism are provided side by side, and the main control PCB is electrically connected with the lock core PCB and the detachable battery respectively.
    Type: Application
    Filed: December 28, 2017
    Publication date: August 3, 2023
    Inventors: MAN SHUN SERVER LEUNG, LOK SHUN LEUNG
  • Patent number: 11180930
    Abstract: A household electric and mechanical dual-controlled intelligent lock includes a mechanical clutching structure and an intelligent electronic control structure. The mechanical clutching structure includes a locking head, a springback lock tongue, a first round rotary table and a fixed seat, wherein: an end portion of the springback lock tongue extends outside the fixed seat, an arched guide rail which is fitted with the first round rotary table is located on the springback lock tongue. The intelligent electronic control structure includes a PCB (printed circuit board), a motor, a scalable suite and a second round rotary table, wherein: one end of the scalable suite is fixedly connected with the motor, the other end of the scalable suite is fixedly connected with the second round rotary table, an arched guide rail which is fitted with the second round rotary table is located on the other surface of the springback lock tongue.
    Type: Grant
    Filed: September 29, 2018
    Date of Patent: November 23, 2021
    Inventor: Yan Shun Leung
  • Publication number: 20210332609
    Abstract: A household electric and mechanical dual-controlled intelligent lock includes a mechanical clutching structure and an intelligent electronic control structure. The mechanical clutching structure includes a locking head, a springback lock tongue, a first round rotary table and a fixed seat, wherein: an end portion of the springback lock tongue extends outside the fixed seat, an arched guide rail which is fitted with the first round rotary table is located on the springback lock tongue. The intelligent electronic control structure includes a PCB (printed circuit board), a motor, a scalable suite and a second round rotary table, wherein: one end of the scalable suite is fixedly connected with the motor, the other end of the scalable suite is fixedly connected with the second round rotary table, an arched guide rail which is fitted with the second round rotary table is located on the other surface of the springback lock tongue.
    Type: Application
    Filed: September 29, 2018
    Publication date: October 28, 2021
    Inventor: YAN SHUN LEUNG
  • Publication number: 20210309038
    Abstract: A device includes at least one transient image having optical properties which vary depending on the angle of observation, with the image(s) consisting of a set of three-dimensional microstructures arranged in a plurality of subsets. Each subset consists of microstructures having an equivalent or identical planar angle ?. A security document can include such a device and the device can be used as a security element.
    Type: Application
    Filed: June 21, 2021
    Publication date: October 7, 2021
    Applicant: KARMIC SÀRL
    Inventor: Yit-Shun LEUNG KI
  • Patent number: 11049649
    Abstract: An isolation transformer includes a transformer core. First and second through-bores extend through the transformer core from a first surface to a second surface. Each through-bore has an elongated profile with at least a portion of the elongated profile providing a respective flat winding surface. The flat winding surfaces are spaced apart by a central portion of the transformer core. The transformer is wound with a six-wire cable having a central non-conductive core. First, second, third, fourth, fifth and sixth conductive wires are positioned around and adjacent to the central non-conductive core in a substantially equally spaced angular relationship. The second conductive wire is positioned between the first conductive wire and the third conductive wire; and the fifth conductive wire is positioned between the fourth conductive wire and the sixth conductive wire. The conductive wires are twisted about the central non-conductive core at a selected twist density.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: June 29, 2021
    Inventors: Victor H. Renteria, Chun Wing (Alan) Ng, Wai Shun Leung
  • Patent number: 10586336
    Abstract: A fully convolutional network (FCN) implemented on a specialized processor optimized for convolution computation can achieve a speed-up in cell classification. Without re-optimizing the specialized processor, a further speed-up is achieved by compacting a testing image of cells, and processing the compacted testing image with the FCN. The testing image is first segmented into a background and regions of interest (ROIs). The ROIs are packed closer together by rearranging the ROIs without resizing them under a constraint that any two adjacent rearranged ROIs are separated by a distance in pixel not less than a minimum distance determined according to stride values of FCN convolutional layers. Geometrical operations in ROI rearrangement include relocating the ROIs and, optionally, rotating the ROIs. The rearranged ROIs are enclosed by a boundary, typically a rectangular boundary, to form the compacted testing image having an area smaller than that of the testing image.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: March 10, 2020
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Yu Hu, Lu Wang, Ping Shun Leung
  • Patent number: 10504647
    Abstract: An isolation transformer includes a transformer core. First and second through-bores extend through the transformer core from a first surface to a second surface. Each through-bore has an elongated profile with at least a portion of the elongated profile providing a respective flat winding surface. The flat winding surfaces are spaced apart by a central portion of the transformer core. The transformer is wound with a six-wire cable having a central non-conductive core. First, second, third, fourth, fifth and sixth conductive wires are positioned around and adjacent to the central non-conductive core in a substantially equally spaced angular relationship. The second conductive wire is positioned between the first conductive wire and the third conductive wire; and the fifth conductive wire is positioned between the fourth conductive wire and the sixth conductive wire. The conductive wires are twisted about the central non-conductive core at a selected twist density.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: December 10, 2019
    Assignee: Bel Fuse (Macao Commercial Off
    Inventors: Victor H. Renteria, Chun Wing (Alan) Ng, Wai Shun Leung
  • Publication number: 20190362891
    Abstract: An isolation transformer includes a transformer core. First and second through-bores extend through the transformer core from a first surface to a second surface. Each through-bore has an elongated profile with at least a portion of the elongated profile providing a respective flat winding surface. The flat winding surfaces are spaced apart by a central portion of the transformer core. The transformer is wound with a six-wire cable having a central non-conductive core. First, second, third, fourth, fifth and sixth conductive wires are positioned around and adjacent to the central non-conductive core in a substantially equally spaced angular relationship. The second conductive wire is positioned between the first conductive wire and the third conductive wire; and the fifth conductive wire is positioned between the fourth conductive wire and the sixth conductive wire. The conductive wires are twisted about the central non-conductive core at a selected twist density.
    Type: Application
    Filed: August 13, 2019
    Publication date: November 28, 2019
    Inventors: Victor H. RENTERIA, Chun Wing (Alan) NG, Wai Shun LEUNG
  • Publication number: 20190355119
    Abstract: A fully convolutional network (FCN) implemented on a specialized processor optimized for convolution computation can achieve a speed-up in cell classification. Without re-optimizing the specialized processor, a further speed-up is achieved by compacting a testing image of cells, and processing the compacted testing image with the FCN. The testing image is first segmented into a background and regions of interest (ROIs). The ROIs are packed closer together by rearranging the ROIs without resizing them under a constraint that any two adjacent rearranged ROIs are separated by a distance in pixel not less than a minimum distance determined according to stride values of FCN convolutional layers. Geometrical operations in ROI rearrangement include relocating the ROIs and, optionally, rotating the ROIs. The rearranged ROIs are enclosed by a boundary, typically a rectangular boundary, to form the compacted testing image having an area smaller than that of the testing image.
    Type: Application
    Filed: May 18, 2018
    Publication date: November 21, 2019
    Inventors: Yu HU, Lu WANG, Ping Shun LEUNG
  • Patent number: 10114713
    Abstract: A computer-implemented method for preventing split-brain scenarios in high-availability clusters may include (1) detecting, at a first node of a high-availability cluster, a partitioning event that isolates the first node from a second node of the high-availability cluster, (2) broadcasting, from a health-status server and after the partitioning event has occurred, a cluster-health message to the first node that includes at least a health status of the second node that is based on whether the health-status server received a node-health message from the second node, and (3) reacting, at the first node and based at least in part on whether the first node received the cluster-health message, to the partitioning event such that the partitioning event does not result in a split-brain scenario within the high-availability cluster. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: October 30, 2018
    Assignee: Juniper Networks, Inc.
    Inventors: Jian Chen, Jianhua Gu, Anthony Shun Leung Ng, Kuen-Der Christopher Lin, Xiaochen Tang
  • Publication number: 20180286577
    Abstract: An isolation transformer includes a transformer core. First and second through-bores extend through the transformer core from a first surface to a second surface. Each through-bore has an elongated profile with at least a portion of the elongated profile providing a respective flat winding surface. The flat winding surfaces are spaced apart by a central portion of the transformer core. The transformer is wound with a six-wire cable having a central non-conductive core. First, second, third, fourth, fifth and sixth conductive wires are positioned around and adjacent to the central non-conductive core in a substantially equally spaced angular relationship. The second conductive wire is positioned between the first conductive wire and the third conductive wire; and the fifth conductive wire is positioned between the fourth conductive wire and the sixth conductive wire. The conductive wires are twisted about the central non-conductive core at a selected twist density.
    Type: Application
    Filed: October 4, 2017
    Publication date: October 4, 2018
    Inventors: Victor H. RENTERIA, Chun Wing (Alan) NG, Wai Shun LEUNG
  • Publication number: 20160353280
    Abstract: An aspect includes receiving, at a computer processor, encrypted data indicating operating characteristics of a wireless communication-enabled device. An aspect also includes decrypting the encrypted data received from the device, formatting the decrypted data into a predefined format, and displaying the formatted data in near real time via a graphical user interface of a website of an entity.
    Type: Application
    Filed: May 27, 2016
    Publication date: December 1, 2016
    Inventors: Kwok Shun Leung, Jacob Jan Szot
  • Patent number: 9450852
    Abstract: A computer-implemented method for preventing split-brain scenarios in high-availability clusters may include (1) detecting, at a first node of a high-availability cluster, a partitioning event that isolates the first node from a second node of the high-availability cluster, (2) broadcasting, from a health-status server and after the partitioning event has occurred, a cluster-health message to the first node that includes at least a health status of the second node that is based on whether the health-status server received a node-health message from the second node, and (3) reacting, at the first node and based at least in part on whether the first node received the cluster-health message, to the partitioning event such that the partitioning event does not result in a split-brain scenario within the high-availability cluster. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: September 20, 2016
    Assignee: Juniper Networks, Inc.
    Inventors: Jian Chen, Jianhua Gu, Anthony Shun Leung Ng, Kuen-Der Christopher Lin, Xiaochen Tang
  • Patent number: 9117121
    Abstract: Methods, apparatuses, and computer readable media for detecting abnormalities in a characteristic of an eye using eye-imaging methods are presented. A plurality of images of the eye are received over time. Each image includes a plurality of pixels, which can be partitioned into blocks of pixels with varying sizes, called pixel partitions. A value is determined for each pixel partition, e.g., an average of the pixel values. A pixel partition set may be identified, which includes a pixel partition from each image, corresponding to a common region of a patient's eye. A regression model is computed for each pixel partition set using the values determined for each pixel partition. The regression model computes a rate of change of the retinal nerve fiber thickness at individual pixel partitions over time. An abnormality may be identified by comparing the rates of change of the model and the expected age-related rate of change.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: August 25, 2015
    Assignee: The Chinese University of Hong Kong
    Inventors: Christopher Kai-Shun Leung, Marco Chak-Yan Yu, Dennis Shun-Chiu Lam
  • Patent number: 9088073
    Abstract: An antenna system includes an antenna element having two antenna feeds and a shared connection to a ground plane. A first antenna portion has a first resonant frequency length of at least one first wavelength formed from a first feed together with the shared ground connection. A second antenna portion has a second resonant frequency length formed from a second feed together with the shared ground connection. First and second slots are respectively positioned between the shared ground connection and the respective first and second feeds such that the slots create inductances. At least a portion of the ground plane is located directly beneath at least a portion of the first and second slots. The first and second slot inductances together with the ground plane capacitances form one or more filter components to isolate the first and second resonant frequencies in the antenna element.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: July 21, 2015
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Chun Kai Leung, Corbett Ray Rowell, Tik Shun Leung, Kuang Boon Beh
  • Patent number: 8962686
    Abstract: An effective dose of a pharmaceutically acceptable phenylbutyrate salt such as sodium phenylbutyrate applied to human ocular tissues or through injection or other means prevents ocular hypertension and treats glaucoma in humans, leading to a new medical therapy for lowering the intraocular pressure via a mechanism different from the existing glaucoma medications. This compound can be formulated in combination with topical or other forms of steroids in prevention and treatment of steroid induced ocular hypertension and glaucoma.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: February 24, 2015
    Assignee: The Chinese University of Hong Kong
    Inventors: Dennis Shun Chiu Lam, Johnson Yiu Nam Lau, Gary Hin Fai Yam, Chi Pui Pang, Christopher Kai Shun Leung, Haoyu Chen, Srinivas Kamalakara Rao, Dorothy Shu Ping Fan
  • Patent number: 8769873
    Abstract: A casement window with multi-angle window sash includes a window frame (2) and a window sash (5). The window sash (5) is connected with the window frame (2) by a window hinge mechanical structure and a locking mechanism (7), wherein the mechanical structure of the window hinge includes a quadrilateral link mechanism (4), a movable sliding block (10), a gear (9), and a hinge seat (3); the locking mechanism (7) includes a screw rod (75) with an axial plane (78) and a thread (77). The screw rod (75) realizes the locking of the window sash (5) by meshing the thread (77) with the gear (9), and realizes the opening and closing of the window sash (5) by the axial plane (78). The casement window is simple in structure, low in cost, convenient to install and use, and provides high safety.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: July 8, 2014
    Assignee: Shenzhen Qichuangmei Technology Co., Ltd
    Inventors: Lin Feng, Hoichi Leung, Lok Shun Leung
  • Patent number: 8727838
    Abstract: A sander has two abrasive-supporting base parts mounted to an oscillating drive mechanism. The base parts may support a sandpaper sheet, or the like, and are connected to one another in a manner allowing ready reconfiguration for different applications. One of the base parts is connected by a pivoting coupling to the other for movement between extended and retracted positions. Latching means releasably lock the coupling so as to hold the parts in the extended position.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: May 20, 2014
    Assignee: Techtronic Power Tools Technology Limited
    Inventors: Hei Shun Leung, Kwok Ting Mok