Patents by Inventor WEI-RU HAN

WEI-RU HAN 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: 12245847
    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 8, 2022
    Date of Patent: March 11, 2025
    Assignee: PIXART IMAGING INC.
    Inventors: Wei-Ru Han, Chih-Yuan Chuang
  • Patent number: 11918329
    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: Grant
    Filed: April 23, 2021
    Date of Patent: March 5, 2024
    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: 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: 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
  • 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
  • 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: 20200037897
    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: Application
    Filed: October 8, 2019
    Publication date: February 6, 2020
    Inventors: WEI-RU HAN, CHIH-YUAN CHUANG, CHENG-NAN TSAI, REN-HAU GU
  • Patent number: 10478080
    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: December 1, 2015
    Date of Patent: November 19, 2019
    Assignee: PIXART IMAGING INC.
    Inventors: Wei-Ru Han, Chih-Yuan Chuang, Cheng-Nan Tsai, Ren-Hau Gu
  • Publication number: 20190209026
    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 18, 2019
    Publication date: July 11, 2019
    Inventors: Wei-Ru HAN, Chih-Yuan CHUANG
  • Publication number: 20190082984
    Abstract: A method for establishing a personal blood pressure estimation model dedicated for a specific user includes: receiving a first reference measurement result of a reference sphygmomanometer; using a PPG sensor to measure a blood pressure of the specific user to generate a first PPG signal; calculating a first estimation result of the blood pressure of the specific user according to the first PPG signal; generating a first regulating parameter by comparing the first reference measurement result with the first estimation result; and establishing the personal blood pressure estimation model by using the first regulating parameter to adjust a set of parameter factor (s) of a basic blood pressure estimation model.
    Type: Application
    Filed: September 19, 2017
    Publication date: March 21, 2019
    Inventors: Wei-Ru Han, Chih-Yuan Chuang, Yuan-Hsin Liao
  • Publication number: 20180271391
    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: Application
    Filed: June 4, 2018
    Publication date: September 27, 2018
    Inventors: Chiung-Wen LIN, Wei-Ru HAN, Yang-Ming CHOU, Cheng-Nan TSAI, Ren-Hau GU, Chih-Yuan CHUANG
  • Publication number: 20170196469
    Abstract: A blood pressure detection method includes the steps of: acquiring a PPG signal from a skin surface using a light sensing element; calculating a blood pressure corresponding to each pulse duration according to at least one pressure estimation model and a time difference between two feature points within one pulse duration; calculating a breathing period; averaging a plurality of blood pressures within the breathing period to generate an average blood pressure; and showing the average blood pressure with a display device.
    Type: Application
    Filed: November 14, 2016
    Publication date: July 13, 2017
    Inventors: Wei-Ru HAN, Ren-Hau GU, Chih-Yuan CHUANG
  • Publication number: 20170150919
    Abstract: A breath detection method includes the steps of: receiving a PPG signal; recognizing a low frequency carrier of the PPG signal; recognizing a rising part of the low frequency carrier and a falling part of the low frequency carrier, wherein a frequency of the low frequency carrier represents a breathing cycle period of a user, the rising part represents one of a breathing out state and a breathing in state of the user, and the falling part represents the other one of the breathing out state and the breathing in state; and real-timely outputting at least one of the breathing cycle period, the breathing out state or the breathing in state.
    Type: Application
    Filed: October 28, 2016
    Publication date: June 1, 2017
    Inventors: Chih-Yuan CHUANG, Wei-Ru HAN, Ming-Chang LI
  • Publication number: 20160220130
    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: Application
    Filed: December 1, 2015
    Publication date: August 4, 2016
    Inventors: WEI-RU HAN, CHIH-YUAN CHUANG, CHENG-NAN TSAI, REN-HAU GU