Patents by Inventor Chih-Yuan Chuang

Chih-Yuan Chuang 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: 20230035838
    Abstract: An AC-DC conversion circuit provides a three-phase power source. The AC-DC conversion circuit includes a first inductor, a second inductor, a third inductor, a switch bridge arm assembly, and a control unit. The switch bridge arm assembly includes three switch bridge arms, and each switch bridge arm includes an upper switch and a lower switch. A plurality of common-connected nodes between the upper switches and the lower switches are coupled to the three-phase power source through the first inductor, the second inductor, and the third inductor. The control unit turns on the upper switch and the lower switch to provide a current detection loop. The control unit acquires a magnitude of a first current flowing through the first inductor and a magnitude of a third current flowing through the third inductor, and determines whether a current detection mechanism of the first current and the third current is normal.
    Type: Application
    Filed: April 6, 2022
    Publication date: February 2, 2023
    Inventors: Cheng-Te LI, Nian-Ci CHEN, Chih-Yuan CHUANG, Cheng-Hao HSUEH
  • Patent number: 11569754
    Abstract: A single-phase and three-phase compatible AC-DC conversion circuit includes a first switching component, a second switching component, a third switching component, three switch bridge arms, a fourth switching component, a pre-charge resistor, a capacitor assembly, and a control unit. Each switch bridge arm has an upper switch and a lower switch connected in series. The fourth switching component is coupled between a first phase of a three-phase power source and a common-connected node of the switch bridge arm corresponding to a second phase of the three-phase power source. The control unit turns on the fourth switching component, turns on the upper switch coupled to the first switching component, and turns on the lower switch coupled to the fourth switching component to provide a discharge path so that the capacitor assembly discharges through the pre-charge resistor on the discharge path.
    Type: Grant
    Filed: January 6, 2022
    Date of Patent: January 31, 2023
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Cheng-Te Li, Chih-Yuan Chuang
  • Publication number: 20220416683
    Abstract: A single-phase and three-phase compatible AC-DC conversion circuit includes a first switching component, a second switching component, a third switching component, three switch bridge arms, a fourth switching component, a pre-charge resistor, a capacitor assembly, and a control unit. Each switch bridge arm has an upper switch and a lower switch connected in series. The fourth switching component is coupled between a first phase of a three-phase power source and a common-connected node of the switch bridge arm corresponding to a second phase of the three-phase power source. The control unit turns on the fourth switching component, turns on the upper switch coupled to the first switching component, and turns on the lower switch coupled to the fourth switching component to provide a discharge path so that the capacitor assembly discharges through the pre-charge resistor on the discharge path.
    Type: Application
    Filed: January 6, 2022
    Publication date: December 29, 2022
    Inventors: Cheng-Te LI, Chih-Yuan CHUANG
  • Patent number: 11538681
    Abstract: An epitaxy substrate and a method of manufacturing the same are provided. The epitaxy substrate includes a silicon substrate and a silicon carbide layer. The silicon substrate has a first surface and a second surface opposite to each other, and the first surface is an epitaxy surface. The silicon carbide layer is located in the silicon substrate, and a distance between the silicon carbide layer and the first surface is between 100 angstroms (?) and 500 angstroms.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: December 27, 2022
    Assignee: GlobalWafers Co., Ltd.
    Inventors: Ying-Ru Shih, Chih-Yuan Chuang, Chun-I Fan, Wen-Ching Hsu
  • Publication number: 20220390291
    Abstract: A temperature detection device includes plural thermistors, a voltage source and plural temperature detection circuits. The first terminals of the thermistors are electrically connected with a common node. The voltage source is electrically connected with the common node directly. Each temperature detection circuit includes a voltage divider and a differential amplifier circuit. The voltage divider includes a first resistor and a second resistor. A first terminal of the first resistor is connected with the common node. A second terminal of the first resistor is connected with a first terminal of the second resistor and the second terminal of the corresponding thermistor. The second terminal of the second resistor is electrically connected with a ground terminal. The differential amplifier circuit includes a first input terminal connected with the first terminal of the first resistor, a second input terminal connected with the second terminal of the first resistor, and an output terminal.
    Type: Application
    Filed: December 28, 2021
    Publication date: December 8, 2022
    Inventors: Cheng-Te Li, Chih-Yuan Chuang, Yen-Hsun Chen
  • Publication number: 20220201173
    Abstract: A portable electronic device and a customized image-capturing module thereof are provided. The customized image-capturing module includes a carrier substrate, an image-capturing chip, and a lens assembly. The carrier substrate includes a carrier body, a plurality of first conductive pads, and a plurality of second conductive pads. The image-capturing chip is disposed inside a concave space of the carrier body, and the image-capturing chip includes a plurality of conductive chip pads. The second conductive pads are exposed from a bottom side of the carrier body, the conductive chip pads are electrically connected to the second conductive pads through the first conductive pads, respectively, so that when the customized image-capturing module is partially disposed inside a receiving space and positioned between two electronic elements, the second conductive pads can be electrically connected to conductive substrate pads of a circuit substrate through soldering materials, respectively.
    Type: Application
    Filed: July 23, 2021
    Publication date: June 23, 2022
    Inventors: TSENG-CHIEH LEE, KUNG-AN LIN, Chih-Yuan Chuang, CHIEN-CHE TING
  • Publication number: 20220183577
    Abstract: A microcirculation detection system including a heating device, a photosensitive array and a processing unit is provided. The heating device is used to heat a skin area. The photosensitive array is used to detect outgoing light from the skin area, and output a plurality of brightness variation signals respectively at different time points within a heating period. The processing unit is used to calculate a change of an array energy distribution varied within the heating period according to the plurality of brightness variation signals to accordingly identify a microcirculation state.
    Type: Application
    Filed: March 8, 2022
    Publication date: June 16, 2022
    Inventors: WEI-RU HAN, CHIH-YUAN CHUANG
  • Patent number: 11354963
    Abstract: An identity verification method applied in an identity verification device is provided. The method includes controlling a first camera to capture an image of a user and performing a preliminary verification on the user based on the captured image. A first reference point and a second reference point are determined on a human face of the user in the captured image, when the user passes the preliminary verification. Once first reference information of the first reference point and second reference information of the second reference point are obtained, a re-verification on the user is performed based on the first reference information of the first reference point and the second reference information of the second reference point.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: June 7, 2022
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Chih-Yuan Chuang
  • Patent number: 11334066
    Abstract: A safety monitoring apparatus and method thereof for human-driven vehicle are provided. The safety monitoring apparatus includes a sensing unit, a processing unit, and a warning unit. The sensing unit and the warning unit are electrically connected to the processing unit, respectively. The sensing unit is arranged on a steering member of the human-driven vehicle and is used for sensing whether the steering member is in contact with a hand of a driver and generating a sensing signal accordingly. The processing unit determines whether the hand of the driver is placed on the steering member. The warning unit is used for generating a safety warning message. When the processing unit determines that the hand of the driver has not been placed on the steering member according to the sensing signal, the processing unit drives the warning unit to generate the safety warning message to warn the driver.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: May 17, 2022
    Assignee: PIXART IMAGING INC.
    Inventors: Yen-Min Chang, Chih-Yuan Chuang
  • Patent number: 11311203
    Abstract: A microcirculation detection system including a heating device, a photosensitive array and a processing unit is provided. The heating device is used to heat a skin area. The photosensitive array is used to detect outgoing light from the skin area, and output a plurality of brightness variation signals respectively at different time points within a heating period. The processing unit is used to calculate a change of an array energy distribution varied within the heating period according to the plurality of brightness variation signals to accordingly identify a microcirculation state.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: April 26, 2022
    Assignee: PIXART IMAGING INC.
    Inventors: Wei-Ru Han, Chih-Yuan Chuang
  • Publication number: 20220108924
    Abstract: A semiconductor substrate and a method of manufacturing the same are provided. The method includes epitaxially growing a buffer layer and a silicon carbide layer on a silicon surface of an N-type silicon carbide substrate, and the silicon carbide layer is high-resistivity silicon carbide or N-type silicon carbide (N—SiC). Next, a gallium nitride epitaxial layer is epitaxially grown on the silicon carbide layer to obtain a semiconductor structure composed of the buffer layer, the silicon carbide layer, and the gallium nitride epitaxial layer. After the epitaxial growth of the gallium nitride epitaxial layer, a laser is used to form a damaged layer in the semiconductor structure, and a chip carrier is bonded to the surface of the gallium nitride epitaxial layer, and then the N-type silicon carbide and the semiconductor structure are separated at the location of the damaged layer.
    Type: Application
    Filed: August 27, 2021
    Publication date: April 7, 2022
    Applicant: GlobalWafers Co., Ltd.
    Inventors: Chih-Yuan Chuang, Walter Tony Wohlmuth
  • Publication number: 20220044382
    Abstract: A method for marking defects of products implemented in an electronic device is provided. The method includes obtaining at least one detection image of a product to be marked; recognizing a position and a type of at least one defect on the product according to the at least one detection image; transmit the position and the type of the at least one apparent defect to a robot arm; controlling the robot arm to mark the at least one defect on an adhesive film according to the position and the type of the at least one defect; and controlling a film coating unit to apply the adhesive film which is marked to the product.
    Type: Application
    Filed: August 6, 2021
    Publication date: February 10, 2022
    Inventor: CHIH-YUAN CHUANG
  • Patent number: 11213217
    Abstract: A physiological detection system including an array sensor and a processing unit is provided. The array sensor is configured to output array PPG signals. The processing unit is configured to construct a 3D energy distribution according to the array PPG signals to accordingly identify different microcirculation states.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: January 4, 2022
    Assignee: PIXART IMAGING INC.
    Inventors: Wei-Ru Han, Chih-Yuan Chuang, Cheng-Nan Tsai, Ren-Hau Gu
  • Patent number: 11201080
    Abstract: An epitaxy substrate and a method of manufacturing the same are provided. The epitaxy substrate includes a device substrate and a handle substrate. The device substrate has a first surface and a second surface opposite to each other, and a bevel disposed between the first and the second surfaces. The handle substrate is bonded to the second surface of the device substrate, wherein the oxygen content of the device substrate is less than the oxygen content of the handle substrate, and a bonding angle greater than 90° is between the bevel of the device substrate and the handle substrate.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: December 14, 2021
    Assignee: GlobalWafers Co., Ltd.
    Inventors: Ying-Ru Shih, Chih-Yuan Chuang, Chi-Tse Lee, Chun-I Fan, Wen-Ching Hsu
  • Publication number: 20210343583
    Abstract: A method of manufacturing an epitaxy substrate is provided. A handle substrate is provided. A beveling treatment is performed on an edge of a device substrate such that a bevel is formed at the edge of the device substrate, wherein a thickness of the device substrate is greater than 100 ?m and less than 200 ?m. An ion implantation process is performed on a first surface of the device substrate to form an implantation region within the first surface. A second surface of the device substrate is bonded to the handle substrate for forming the epitaxy substrate, wherein a bonding angle greater than 90° is provided between the bevel of the device substrate and the handle substrate, and a projection length of the bevel toward the handle substrate is between 600 ?m and 800 ?m.
    Type: Application
    Filed: July 14, 2021
    Publication date: November 4, 2021
    Applicant: GlobalWafers Co., Ltd.
    Inventors: Ying-Ru Shih, Chih-Yuan Chuang, Chi-Tse Lee, Chun-I Fan, Wen-Ching Hsu
  • Publication number: 20210335075
    Abstract: An identity verification method applied in an identity verification device is provided. The method includes controlling a first camera to capture an image of a user and performing a preliminary verification on the user based on the captured image. A first reference point and a second reference point are determined on a human face of the user in the captured image, when the user passes the preliminary verification. Once first reference information of the first reference point and second reference information of the second reference point are obtained, a re-verification on the user is performed based on the first reference information of the first reference point and the second reference information of the second reference point.
    Type: Application
    Filed: September 3, 2020
    Publication date: October 28, 2021
    Inventor: CHIH-YUAN CHUANG
  • Publication number: 20210236016
    Abstract: A physiological detection device includes system including a first array PPG detector, a second array PPG detector, a display and a processing unit. The first array PPG detector is configured to generate a plurality of first PPG signals. The second array PPG detector is configured to generate a plurality of second PPG signals. The display is configured to show a detected result of the physiological detection system. The processing unit is configured to convert the plurality of first PPG signals and the plurality of second PPG signals to a first 3D energy distribution and a second 3D energy distribution, respectively, and control the display to show an alert message.
    Type: Application
    Filed: April 23, 2021
    Publication date: August 5, 2021
    Inventors: CHIUNG-WEN LIN, WEI-RU HAN, YANG-MING CHOU, CHENG-NAN TSAI, REN-HAU GU, CHIH-YUAN CHUANG
  • Patent number: 11020013
    Abstract: A physiological detection device includes an array sensor and a processing unit. The array sensor is configured to output array photoplethysmography (PPG) signals. The processing unit is configured to construct a 3D energy distribution, and identify an arc-like pattern in the 3D energy distribution according to the array PPG signals to accordingly identify different microcirculation states and an attaching status.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: June 1, 2021
    Assignee: PIXART IMAGING INC.
    Inventors: Chiung-Wen Lin, Wei-Ru Han, Yang-Ming Chou, Cheng-Nan Tsai, Ren-Hau Gu, Chih-Yuan Chuang
  • 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
  • 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