Patents by Inventor Man-hon Chan

Man-hon Chan 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).

  • Publication number: 20240130935
    Abstract: An inedible and dry dormant state encapsulated probiotic core-shell particle for external, non-mucosal skin application is provided. From inside out, the core-shell particle has a structure of a carrier particle core serving as a nutrient source for probiotics, a first layer including a dormant probiotic species for affecting epidermal biome and at least one prebiotic as a food source for the probiotic, a polymer layer positioned over the first layer, and a dissolvable protective layer for protecting the probiotic core-shell particle from oxidation, heat and humidity. By co-applying with a releasing medium, the dissolvable protective layer and the polymer layer are dissolved to expose the dormant probiotic containing layer, the first layer. Further, the releasing medium also is able to activate and reconstitute the dormant probiotic to a live probiotic on the applied non-mucosal epidermal surface.
    Type: Application
    Filed: October 23, 2023
    Publication date: April 25, 2024
    Inventors: Chun Hay KO, Man Hon YUEN, Wah Kit CHEUK, Joo Ann EWE, Wing Man CHAN
  • Publication number: 20240050803
    Abstract: A computer-implemented method for video processing is disclosed. The method includes receiving an input video of one or more persons from a camera; detecting a sequence of human poses in the input video using an artificial intelligence (AI) based technique; selecting a proper pose from among multiple poses in a given frame of the input video, to generate a sequence of proper poses; detecting one or more key points in the sequence of proper poses; computing changes in coordinates of the one or more key points; computing a function of the changes in the coordinates of the one or more key points in the sequence of proper poses; counting a given user movement as a repetitive motion of an activity based on the function; and computing a plurality of statistics about the activity based on the counting.
    Type: Application
    Filed: October 21, 2023
    Publication date: February 15, 2024
    Inventors: Keng Fai Lee, Qi Zhang, Man Hon Chan, On Loy Sung, Jorge Fino
  • Patent number: 11819734
    Abstract: A system and method for implementing a virtual fitness application are disclosed. Embodiments may be built for various platforms, including web browsers and mobile phones. One embodiment uses pose estimation to count the repetitive motions of a fitness activity (e.g., running). In one embodiment, to count the repetitive motions, a repetitive motion counting process is used that is based on computing differences of Y-coordinates of key points of the user. The repetitive motion counting process includes selecting a proper pose of the user; computing one or more delta values (corresponding to Y-coordinate changes of the key points); and counting a given user movement as a repetitive motion based on a function (e.g., average) of the delta values. One embodiment uses the pose estimation and repetitive motion count results to provide a gamified experience, for example, a leaderboard, a stats report, instant visual feedback, badges, coins, and a social experience.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: November 21, 2023
    Assignee: NEX Team Inc.
    Inventors: Keng Fai Lee, Qi Zhang, Man Hon Chan, On Loy Sung, Jorge Fino
  • Patent number: 11594029
    Abstract: Methods and systems for determining a ball shot attempt location on a ball court are disclosed. The method includes receiving an input video, where the input video includes the ball shot attempt and one or more players; receiving a declared ball shot attempt; determining a potential shooter by detecting a moving object flow in the input video; determining a potential shooter image region in the image plane by analyzing an overlapping image area of the ball trajectory and the potential shooter; determining a shooter foot-on-court time; determining a most probable pair of shooter legs in the potential shooter image region; determining a shooter foot location based on the most probable pair of shooter legs; and determining a ball shot attempt location on the ball court by applying a camera projection to the shooter foot location.
    Type: Grant
    Filed: June 1, 2022
    Date of Patent: February 28, 2023
    Assignee: NEX Team Inc.
    Inventors: Keng Fai Lee, Tin Yin Lam, Wing Hung Chan, Qi Zhang, On Loy Sung, Man Hon Chan
  • Publication number: 20220301309
    Abstract: Methods and systems for determining a ball shot attempt location on a ball court are disclosed. The method includes receiving an input video, where the input video includes the ball shot attempt and one or more players; receiving a declared ball shot attempt; determining a potential shooter by detecting a moving object flow in the input video; determining a potential shooter image region in the image plane by analyzing an overlapping image area of the ball trajectory and the potential shooter; determining a shooter foot-on-court time; determining a most probable pair of shooter legs in the potential shooter image region; determining a shooter foot location based on the most probable pair of shooter legs; and determining a ball shot attempt location on the ball court by applying a camera projection to the shooter foot location.
    Type: Application
    Filed: June 1, 2022
    Publication date: September 22, 2022
    Inventors: Keng Fai Lee, Tin Yin Lam, Wing Hung Chan, Qi Zhang, On Loy Sung, Man Hon Chan
  • Patent number: 11450010
    Abstract: Methods and systems for determining and classifying a number of repetitive motions in a video are described, and include the steps of first determining a plurality of images from a video, where the images are segmented from at least one video frame of the video. Next, performing a pose detection process on a feature of the images to generate one or more landmarks. Next, determining one or more principle component axes on points associated with a given landmark. Finally, determining at least one repetitive motion based on a pattern associated with a projection of the points onto the one or more principle components. In some embodiments, the disclosed methods can classify the repetitive motions to respective types. The present invention can be implemented for convenient use on a mobile computing device, such as a smartphone, for tracking exercises and similar repetitive motions.
    Type: Grant
    Filed: October 16, 2021
    Date of Patent: September 20, 2022
    Assignee: NEX Team Inc.
    Inventors: On Loy Sung, Qi Zhang, Keng Fai Lee, Shing Fat Mak, Daniel Dejos, Man Hon Chan
  • Patent number: 11380100
    Abstract: Methods and systems for determining a ball shot attempt result, the ball shot attempt captured by a camera on a mobile computing device, are disclosed. The methods and systems perform steps comprising receiving an input video captured using the camera on the mobile computing device, wherein the input video comprises a ball shot attempt at a goal; receiving a declared ball shot attempt, the declared ball shot attempt detected by analyzing a ball trajectory in the input video; detecting an element movement associated with an element of the goal; and determining the ball shot attempt result based on the element movement and the ball trajectory. In some embodiments, the element of the goal is a net, and the declared ball shot attempt is detected by analyzing the ball trajectory in a ball shot attempt Region of Interest (ROI) within frames of the input video.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: July 5, 2022
    Assignee: NEX Team Inc.
    Inventors: Keng Fai Lee, Tin Yin Lam, Wing Hung Chan, Qi Zhang, On Loy Sung, Man Hon Chan
  • Publication number: 20220203165
    Abstract: A system and method for implementing a virtual fitness application are disclosed. Embodiments may be built for various platforms, including web browsers and mobile phones. One embodiment uses pose estimation to count the repetitive motions of a fitness activity (e.g., running). In one embodiment, to count the repetitive motions, a repetitive motion counting process is used that is based on computing differences of Y-coordinates of key points of the user. The repetitive motion counting process includes selecting a proper pose of the user; computing one or more delta values (corresponding to Y-coordinate changes of the key points); and counting a given user movement as a repetitive motion based on a function (e.g., average) of the delta values. One embodiment uses the pose estimation and repetitive motion count results to provide a gamified experience, for example, a leaderboard, a stats report, instant visual feedback, badges, coins, and a social experience.
    Type: Application
    Filed: November 4, 2021
    Publication date: June 30, 2022
    Inventors: Keng Fai Lee, Qi Zhang, Man Hon Chan, On Loy Sung, Jorge Fino
  • Publication number: 20220138966
    Abstract: Methods and systems for determining and classifying a number of repetitive motions in a video are described, and include the steps of first determining a plurality of images from a video, where the images are segmented from at least one video frame of the video. Next, performing a pose detection process on a feature of the images to generate one or more landmarks. Next, determining one or more principle component axes on points associated with a given landmark. Finally, determining at least one repetitive motion based on a pattern associated with a projection of the points onto the one or more principle components. In some embodiments, the disclosed methods can classify the repetitive motions to respective types. The present invention can be implemented for convenient use on a mobile computing device, such as a smartphone, for tracking exercises and similar repetitive motions.
    Type: Application
    Filed: October 16, 2021
    Publication date: May 5, 2022
    Inventors: On Loy Sung, Qi Zhang, Keng Fai Lee, Shing Fat Mak, Daniel Dejos, Man Hon Chan
  • Patent number: 10796448
    Abstract: Methods and systems for detecting a player in a gaming environment using a mobile device are disclosed. The methods and systems perform the steps of receiving calibration data from a camera of a user device, the calibration data comprising a first reference point associated with the gaming environment, a second reference point associated with the gaming environment, and sensor data associated with the user device; computing a camera projection based on the first reference point, the second reference point, and the sensor data obtained from the user device; receiving an input video of the gaming environment, wherein the input video is captured using the camera, and wherein frames of the input video comprise at least one player in the gaming environment; identifying an image location of the player by performing a computer vision algorithm on the input video; and determining a real-world location of the player based on the image location and the camera projection.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: October 6, 2020
    Assignee: NEX Team Inc.
    Inventors: Keng Fai Lee, Man Hon Chan, Wing Hung Chan, On Loy Sung
  • Publication number: 20200151903
    Abstract: Methods and systems for detecting a player in a gaming environment using a mobile device are disclosed. The methods and systems perform the steps of receiving calibration data from a camera of a user device, the calibration data comprising a first reference point associated with the gaming environment, a second reference point associated with the gaming environment, and sensor data associated with the user device; computing a camera projection based on the first reference point, the second reference point, and the sensor data obtained from the user device; receiving an input video of the gaming environment, wherein the input video is captured using the camera, and wherein frames of the input video comprise at least one player in the gaming environment; identifying an image location of the player by performing a computer vision algorithm on the input video; and determining a real-world location of the player based on the image location and the camera projection.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 14, 2020
    Inventors: Keng Fai Lee, Man Hon Chan, Wing Hung Chan, On Loy Sung
  • Publication number: 20200057889
    Abstract: Methods and systems for determining a ball shot attempt result, the ball shot attempt captured by a camera on a mobile computing device, are disclosed. The methods and systems perform steps comprising receiving an input video captured using the camera on the mobile computing device, wherein the input video comprises a ball shot attempt at a goal; receiving a declared ball shot attempt, the declared ball shot attempt detected by analyzing a ball trajectory in the input video; detecting an element movement associated with an element of the goal; and determining the ball shot attempt result based on the element movement and the ball trajectory. In some embodiments, the element of the goal is a net, and the declared ball shot attempt is detected by analyzing the ball trajectory in a ball shot attempt Region of Interest (ROI) within frames of the input video.
    Type: Application
    Filed: October 25, 2019
    Publication date: February 20, 2020
    Inventors: Keng Fai Lee, Tin Yin Lam, Wing Hung Chan, Qi Zhang, On Loy Sung, Man Hon Chan
  • Patent number: 10489656
    Abstract: Methods and systems for ball shot attempt detection and game analytics generation are disclosed. The methods and systems perform steps to receive an input video of a ball gameplay, wherein the input video was captured using a stationary camera, and wherein frames of the input video comprises a goal; identify a Region of Interest (ROI) surrounding the goal by performing a first computer vision algorithm on the input video; detect a ball within the ROI during a shot attempt and determining a trajectory of the ball by performing a second computer vision algorithm on the input video; and identify a player relevant to the shot attempt based on the trajectory of the ball. In some embodiments, the computer vision algorithms comprise a convolution neural network (CNN). The present invention uses computer vision techniques to enable a resource-limited mobile device such as a smartphone to efficiently execute the new process.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: November 26, 2019
    Assignee: NEX Team Inc.
    Inventors: Keng Fai Lee, Tin Yin Lam, Wing Hung Chan, Qi Zhang, On Loy Sung, Man Hon Chan
  • Publication number: 20190087661
    Abstract: Methods and systems for ball shot attempt detection and game analytics generation are disclosed. The methods and systems perform steps to receive an input video of a ball gameplay, wherein the input video was captured using a stationary camera, and wherein frames of the input video comprises a goal; identify a Region of Interest (ROI) surrounding the goal by performing a first computer vision algorithm on the input video; detect a ball within the ROI during a shot attempt and determining a trajectory of the ball by performing a second computer vision algorithm on the input video; and identify a player relevant to the shot attempt based on the trajectory of the ball. In some embodiments, the computer vision algorithms comprise a convolution neural network (CNN). The present invention uses computer vision techniques to enable a resource-limited mobile device such as a smartphone to efficiently execute the new process.
    Type: Application
    Filed: August 23, 2018
    Publication date: March 21, 2019
    Inventors: Keng Fai Lee, Tin Yin Lam, Wing Hung Chan, Qi Zhang, On Loy Sung, Man Hon Chan
  • Publication number: 20170359444
    Abstract: A change propagation command, in one embodiment, causes the creation of induced commands in order to propagate commands in a collaborative document creation process that involves at least two client systems and a server system. The change propagation command received on a client system causes the creation of induced commands to a local copy on that client system and also causes the creation of induced commands on the server system. The induced commands in one embodiment apply changes to any objects that were added after the original change propagation command was received.
    Type: Application
    Filed: September 22, 2016
    Publication date: December 14, 2017
    Inventors: Chi Ming To, David A. Underwood, Man Hon Chan, Ralph L. Melton, Tamara L. Abell, Tin Yin Lam
  • Patent number: 9489372
    Abstract: A fast client-side spell checker is provided that builds efficient structures out of dictionary and a common misspelling list and uses the structures to prune the number of searches required to identify misspelled words and provide suggestions for correcting the misspelled words. The spell checker is a browser-based application, which is provided by a server to a client device. The server sends the dictionary and a list of common misspellings to the client device in the form of efficient data structures. The spell checker utilizes a set of rules to identify the words that are not in the dictionary but are intended to be correct as typed. The spell checker is used by different browser-based applications that utilize the same spell checker regardless of the browser platform used to access the applications. The spell checker, therefore, provides a uniform spell checking user experience across different browser platforms.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 8, 2016
    Assignee: APPLE INC.
    Inventors: Iuri Prilepov, Tang-lung Cheung, Keng-fai Lee, Siu-lung Tam, Man-hon Chan
  • Publication number: 20140281943
    Abstract: A fast client-side spell checker is provided that builds efficient structures out of dictionary and a common misspelling lists and uses the structures to prune the number of searches required to identify misspelled words and provide suggestions for correcting the misspelled words. The spell checker is a browser-based application, which is provided by a server to a client device. The server also sends the dictionary and a list of common misspellings to the client device in the form of efficient data structures. The spell checker utilizes a set of rules to identify the words that are not in the dictionary but are intended to be correct as typed. The spell checker is used by different browser-based applications that utilize the same spell checker regardless of the browser platform used to access the applications. In this way, the spell checker provides a uniform spell checking user experience across different browser platforms.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: Apple Inc.
    Inventors: Iuri Prilepov, Tang-lung Cheung, Keng-fai Lee, Siu-lung Tam, Man-hon Chan