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: 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: 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
  • 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
  • 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
  • Publication number: 20200394387
    Abstract: There is provided a recognition system adaptable to a portable device or a wearable device. The recognition system senses a body heat using a thermal sensor, and performs functions such as the living body recognition, image denoising and body temperature prompting according to detected results.
    Type: Application
    Filed: June 17, 2019
    Publication date: December 17, 2020
    Inventors: Nien-Tse CHEN, Yi-Hsien KO, Yen-Min CHANG
  • Patent number: 10863261
    Abstract: A wearable device and a portable apparatus are provided. The wearable device includes two wireless earphones each including a speaker, a sound receiver for receiving sound from a peripheral object, and a signal converting circuit that is electrically coupled to the sound receiver and 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, the two signal converting circuits, and the two speakers. 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: Grant
    Filed: February 27, 2020
    Date of Patent: December 8, 2020
    Assignee: PIXART IMAGING INC.
    Inventors: Shih-Feng Chen, Yen-Min Chang
  • Publication number: 20200372735
    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: May 20, 2019
    Publication date: November 26, 2020
    Inventors: Yen-Min Chang, Yi-Hsien Ko, Nien-Tse Chen
  • Patent number: 10847049
    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: Grant
    Filed: October 5, 2016
    Date of Patent: November 24, 2020
    Assignee: PIXART IMAGING INC.
    Inventors: Chih-Yuan Chuang, Yen-Min Chang
  • Publication number: 20200348688
    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: April 30, 2019
    Publication date: November 5, 2020
    Inventors: Yi-Hsien KO, Yen-Min CHANG, Nien-Tse CHEN
  • Patent number: 10816321
    Abstract: Provided herein are a measurement device and an operation method thereof. The measurement device senses a distance variation between the measurement device and an object using a built-in proximity sensor and accordingly determines whether to turn on or turn off a track sensing module and an optical ranging module such that the measurement device provides intelligent selection to achieve energy saving without being interfered with by other sensors being turned on.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: October 27, 2020
    Assignee: PIXART IMAGING INC.
    Inventors: Ting-Yang Chang, Shih-Wei Kuo, Yen-Min Chang
  • Publication number: 20200310551
    Abstract: The present invention provides a motion detecting system, which includes a light source module, a plurality of image sensors and a control unit. The light source module illuminates at least one object. The image sensors respectively detect the object under the light emitted by the light source module to generate a plurality of detection results. The control unit is coupled to the image sensors, and generates a control command according to the detection results.
    Type: Application
    Filed: June 17, 2020
    Publication date: October 1, 2020
    Inventors: TING-YANG CHANG, YEN-MIN CHANG, NIEN-TSE CHEN
  • Publication number: 20200285133
    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: Application
    Filed: May 26, 2020
    Publication date: September 10, 2020
    Inventor: YEN-MIN CHANG
  • Publication number: 20200279035
    Abstract: A control system including a detection device and a control host is provided. The detection device is configured to detect a biometric characteristic to accordingly identify a user ID, and output an ID signal according to the user ID. The control host is configured to receive the ID signal to accordingly perform an individualized control associated with the user ID.
    Type: Application
    Filed: May 19, 2020
    Publication date: September 3, 2020
    Inventor: YEN-MIN CHANG
  • Patent number: 10732127
    Abstract: A dirtiness level determining system of a surface cleaning machine, comprising: an optical information generating circuit, configured to generate optical information; a feature level determining circuit, configured to determine an optical feature level of the optical information; and a reminding message generating circuit, configured to generate at least one dirtiness level reminding message according to a relation between the optical feature level and a feature threshold level; wherein the dirtiness level reminding message is adapted to indicate a cleaning status of the cleaning surface, and the cleaning status includes at least one parameter of: a dirtiness level of the cleaning surface, a dirtiness location of the cleaning surface, and an air quality of a room where the cleaning surface locates in.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: August 4, 2020
    Assignee: PixArt Imaging Inc.
    Inventors: Chung-Ting Yang, Yen-Min Chang