Patents by Inventor Yen Min CHANG

Yen Min CHANG 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: 11206057
    Abstract: There is provided a capacitive communication system including an object and a capacitive touch panel. The object includes a plurality of induction conductors configured to have different potential distributions at different time intervals by modulating respective potentials thereof. The capacitive touch panel includes a plurality of sensing electrodes configured to form a coupling electric field with the induction conductors to detect the different potential distributions at the different time intervals. When the different potential distributions match a predetermined agreement between the object and the capacitive touch panel, a near field communication is formed between the object and the capacitive touch panel.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: December 21, 2021
    Assignee: PIXART IMAGING INC.
    Inventors: Yung-Wei Chen, Yen-Chang Wang, Yen-Min Chang, Hsin-Chia Chen
  • Publication number: 20210389778
    Abstract: There is provided a smart detection system including multiple sensors and a central server. The central server confirms a model of every sensor and a position thereof in an operation area. The central server confirms an event position and predicts a user action according to event signals sent by the multiple sensors.
    Type: Application
    Filed: August 30, 2021
    Publication date: December 16, 2021
    Inventors: YI-HSIEN KO, YEN-MIN CHANG, NIEN-TSE CHEN
  • Publication number: 20210385606
    Abstract: A method of wireless communication locator station to be disposed at specific location includes: detecting rotation angle information of client-based portable device, carried or worn by user, according to specific wireless communication standard between wireless communication locator station and client-based portable device when client-based portable device is within signal range of wireless communication locator station; generating head pose direction estimation according to calculated rotation angle information; and when head pose direction estimation indicates that a user turns face towards wireless communication locator station, sending packet signal from wireless communication locator station to server-based portable device, successfully paired with and security-connected with client-based portable device, so that server-based portable device can transfer packet signal to client-based portable device after receiving packet signal.
    Type: Application
    Filed: June 9, 2020
    Publication date: December 9, 2021
    Inventors: Shih-Feng Chen, Yen-Min Chang
  • Publication number: 20210335066
    Abstract: A portable electronic device to be used as a keyless device of a vehicle includes a controlling circuit which includes a physiological feature detection module and a processing circuit. The physiological feature detection module is used for detecting a physiological feature of a person. The processing circuit is coupled to the physiological feature detection module and used for determining whether the person is an authorized user of the vehicle according to the detected physiological feature of the person, and for opening a car door of the vehicle or starting the vehicle when the person is identified by the processing circuit as the authorized user.
    Type: Application
    Filed: July 7, 2021
    Publication date: October 28, 2021
    Applicant: PixArt Imaging Inc.
    Inventors: Yen-Min Chang, Yi-Hsien Ko, Nien-Tse Chen
  • Patent number: 11156902
    Abstract: A method capable of performing an automatic focus function upon a specific movable object in a real-time manner, the method being applicable to a photographic apparatus with the automatic focus function, includes: capturing real-time image within a field of view (FOV) of a lens; comparing images of a plurality of image areas of the real-time image with a feature image of the specific movable object to identify an image area corresponding to the feature image of the specific movable object; and, performing automatic focus on the identified image area.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: October 26, 2021
    Assignee: PIXART IMAGING INC.
    Inventor: Yen-Min Chang
  • Publication number: 20210311562
    Abstract: A method for configuring an optical input device is provided. The optical input device includes a movable unit and a sensing device. The movable unit is arranged to move within a predetermined range. The sensing device is arranged to detect a position within the predetermined range at which the movable unit is located. The method includes: adjusting an optical setting of the sensing device to obtain an optimal dynamic range of the sensing device; and configuring a valid input threshold for the optical input device based on the optimal dynamic range.
    Type: Application
    Filed: June 17, 2021
    Publication date: October 7, 2021
    Applicant: PixArt Imaging Inc.
    Inventors: Tsung-Fa Wang, Yen-Min Chang, Shih-Wei Kuo
  • Patent number: 11137770
    Abstract: There is provided a smart detection system including multiple sensors and a central server. The central server confirms a model of every sensor and a position thereof in an operation area. The central server confirms an event position and predicts a user action according to event signals sent by the multiple sensors.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: October 5, 2021
    Assignee: PIXART IMAGING INC.
    Inventors: Yi-Hsien Ko, Yen-Min Chang, Nien-Tse Chen
  • Publication number: 20210272449
    Abstract: A detection device and an indoor navigation system are provided. The detection device includes two detection modules each including a sound receiver for receiving sound from a peripheral object and a signal converting circuit that is electrically coupled to the sound receiver and that is configured to convert input signal from the sound receiver into a target spectrogram. The two spectrograms from the signal converting circuits have a time/phase difference, and at least one wireless earphone includes a storage unit and a judging circuit that is electrically coupled to the storage unit and the two signal converting circuits. The judging circuit is configured to compare any target spectrogram with basic spectrograms of the storage unit so as to determine which kind of objects the peripheral object is, and is configured to obtain an instant position of the peripheral object by the time/phase difference.
    Type: Application
    Filed: November 6, 2020
    Publication date: September 2, 2021
    Inventors: SHIH-FENG CHEN, YEN-MIN CHANG
  • Patent number: 11094481
    Abstract: A keyswitch capable of identifying keycap change includes a substrate, a keycap, a resilient component, an optical detection module and a processor. The keycap is disposed above the substrate and includes a reflective element. The optical detection module is disposed on the substrate and adapted to receive an optical signal reflected from the reflective element. The processor is disposed on the substrate and electrically connected to the optical detection module. The processor is adapted to analyze the optical signal for acquiring a type and a movement of the keycap. The keyswitch further includes a supporting component and a membrane. An end of the supporting component is connected to the keycap, and the other end of the supporting component is connected to the substrate. The membrane has light penetrating property and is disposed above the optical detection module.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: August 17, 2021
    Assignee: PixArt Imaging Inc.
    Inventors: Tsung-Fa Wang, Yen-Min Chang
  • Patent number: 11087573
    Abstract: A portable electronic device to be used as a keyless device of a vehicle includes a controlling circuit which includes a physiological feature detection module and a processing circuit. The physiological feature detection module is used for detecting a physiological feature of a person. The processing circuit is coupled to the physiological feature detection module and used for determining whether the person is an authorized user of the vehicle according to the detected physiological feature of the person, and for opening a car door of the vehicle or starting the vehicle when the person is identified by the processing circuit as the authorized user.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: August 10, 2021
    Assignee: PixArt Imaging Inc.
    Inventors: Yen-Min Chang, Yi-Hsien Ko, Nien-Tse Chen
  • Patent number: 11072394
    Abstract: A rotation calculating system, comprising: a first optical characteristic acquiring device, configured to acquire optical characteristics for at least one feature of a first target device; and a calculating unit, configured to calculate rotation for a first rotating device based on the optical characteristics of the feature of the first target device. The first rotating device is a wheel, and the first target device is the wheel.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: July 27, 2021
    Assignee: PixArt Imaging Inc.
    Inventors: Chung-Ting Yang, Yen-Min Chang, Ching-Lin Chung
  • Publication number: 20210182586
    Abstract: The present disclosure is related to an optical encoder which is configured to provide precise coding reference data by feature recognition technology. To apply the present disclosure, it is not necessary to provide particular dense patterns on a working surface. The precise coding reference data can be generated by detecting surface features of the working surface.
    Type: Application
    Filed: January 15, 2021
    Publication date: June 17, 2021
    Inventors: WAI-LIAN TEO, YEN-MIN CHANG
  • Patent number: 11029764
    Abstract: An optical detection device capable of detecting a pointer position of a turntable watch includes an optical receiver and a processor. The optical receiver is disposed inside the turntable watch and adapted to receive an optical reflecting signal. The processor is electrically connected to the optical receiver and adapted to compare a physical quantity of the optical reflecting signal with a predefined condition for determining whether a pointer of the turntable watch is located above the optical receiver. The optical detection device further includes an optical emitter electrically connected to the processor and adapted to emit an optical detecting signal. The optical detecting signal is projected onto the pointer to generate the optical reflecting signal.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: June 8, 2021
    Assignee: PixArt Imaging Inc.
    Inventors: Chung-Ting Yang, Kai-Ho Tsai, Yen-Min Chang
  • Publication number: 20210091126
    Abstract: There is provided a structure to improve BSI global shutter efficiency. In a sensor pixel circuit, at least one strong electric field is formed at the position of a floating diffusion region to accordingly have the effect of shielding the floating diffusion region. Or, the semiconductor material from the floating diffusion node toward a light incident direction is removed in the manufacturing process such that a depletion region cannot be formed in this direction. Or, a reflection layer or a photoresist layer is formed in the light incident direction to block the light. In these ways, charges generated by the undesired noises are reduced, and noise charges are difficult to reach the floating diffusion region thereby improving the shutter efficiency.
    Type: Application
    Filed: December 3, 2020
    Publication date: March 25, 2021
    Inventors: Kai-Chieh CHUANG, Yung-Chung LEE, Yen-Min CHANG
  • Patent number: 10930698
    Abstract: There is provided a structure to improve BSI global shutter efficiency. In a sensor pixel circuit, at least one strong electric field is formed at the position of a floating diffusion region to accordingly have the effect of shielding the floating diffusion region. Or, the semiconductor material from the floating diffusion node toward a light incident direction is removed in the manufacturing process such that a depletion region cannot be formed in this direction. Or, a reflection layer or a photoresist layer is formed in the light incident direction to block the light. In these ways, charges generated by the undesired noises are reduced, and noise charges are difficult to reach the floating diffusion region thereby improving the shutter efficiency.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: February 23, 2021
    Assignee: PIXART IMAGING INC.
    Inventors: Kai-Chieh Chuang, Yung-Chung Lee, Yen-Min Chang
  • Patent number: 10929699
    Abstract: The present disclosure is related to an optical encoder which is configured to provide precise coding reference data by feature recognition technology. To apply the present disclosure, it is not necessary to provide particular dense patterns on a working surface. The precise coding reference data can be generated by detecting surface features of the working surface.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: February 23, 2021
    Assignee: PIXART IMAGING INC.
    Inventors: Wai-Lian Teo, Yen-Min Chang
  • Patent number: 10929626
    Abstract: An interactive electronic device includes an image capture module, a response module and a processing module. The image capture module is for capturing images. The processing module is for generating a first or second command set according to the image and output a control signal. The response module is for driving the interactive electronic device to perform a first continuous reaction corresponding to a specific pattern contained in the image according to the first command set or drive the interactive electronic device to perform a second continuous reaction according to the second command set. The processing module is further for replacing, adding or deleting at least a command in the first command set in a random manner thereby randomly obtaining a new command set.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: February 23, 2021
    Assignee: PIXART IMAGING INC.
    Inventors: Shu-Sian Yang, Yen-Min Chang
  • Publication number: 20210043105
    Abstract: An operating method of an interactive service platform including the steps of: communicating with a plurality of user end devices via an application software; receiving physiological measurement information of user from the user end devices via the application software; analyzing the physiological measurement information to identify a physical and mental state/lifestyle of an associated subscriber; and automatically responding content information associated with at least one associated subscriber according to requests from the user end devices.
    Type: Application
    Filed: October 21, 2020
    Publication date: February 11, 2021
    Inventors: CHIH-YUAN CHUANG, YEN-MIN CHANG
  • Publication number: 20200408508
    Abstract: A wireless charging device and an operation method thereof are provided. The wireless charging device includes a charging module, at least one proximity sensor and a central controller. The wireless charging device senses a distance variation between the wireless charging device and an object using the proximity sensor and accordingly determines whether to turn on or turn off the charging module to achieve energy saving.
    Type: Application
    Filed: September 14, 2020
    Publication date: December 31, 2020
    Inventors: TING-YANG CHANG, SHIH-WEI KUO, YEN-MIN CHANG
  • Patent number: 10871385
    Abstract: The present disclosure is related to an optical encoder which is configured to provide precise coding reference data by feature recognition technology. To apply the present disclosure, it is not necessary to provide particular dense patterns on a working surface. The precise coding reference data can be generated by detecting surface features of the working surface.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: December 22, 2020
    Assignee: PIXART IMAGING INC.
    Inventors: Boon-How Kok, Keen-Hun Leong, Ching-Geak Chan, Chiang-Hee Lim, Chu-Leik Ho, Hsin-Chia Chen, Yen-Min Chang