Patents by Inventor Cheng-Nan Tsai

Cheng-Nan Tsai 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: 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: 20200240846
    Abstract: A wearable device includes a case and a far infrared temperature sensing device. The case has a first opening. The far infrared temperature sensing device is disposed inside the case of the wearable device. The far infrared temperature sensing device includes an assembly structure, a sensor chip, a filter structure, and a metal shielding structure. The assembly structure has an accommodating space and a top opening. The sensor chip is disposed in the accommodating space of the assembly structure. The filter structure is disposed above the sensor chip. The metal shielding structure is disposed above the sensor chip, and has a second opening to expose the filter structure. The first and second openings are communicated to cooperatively define a through hole.
    Type: Application
    Filed: April 16, 2020
    Publication date: July 30, 2020
    Inventors: CHIH-MING SUN, MING-HAN TSAI, CHENG-NAN TSAI
  • Patent number: 10670465
    Abstract: A wearable device includes a case and a far infrared temperature sensing device. The case has a first opening. The far infrared temperature sensing device is disposed inside the case of the wearable device. The far infrared temperature sensing device includes an assembly structure, a sensor chip, a filter structure, and a metal shielding structure. The assembly structure has an accommodating space and a top opening. The sensor chip is disposed in the accommodating space of the assembly structure. The filter structure is disposed above the sensor chip. The metal shielding structure is disposed above the sensor chip, and has a second opening to expose the filter structure. The first and second openings are communicated to cooperatively define a through hole.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: June 2, 2020
    Assignee: PIXART IMAGING INC.
    Inventors: Chih-Ming Sun, Ming-Han Tsai, Cheng-Nan Tsai
  • Publication number: 20200163551
    Abstract: An optical detection device for physiological characteristic identification includes a substrate, a light source and an optical receiver. The light source includes a plurality of first lighting units and a plurality of second lighting units symmetrically arranged on the substrate. The optical receiver is disposed on the substrate and adapted to analyze optical signals emitted by the light source for acquiring a result of the physiological characteristic identification.
    Type: Application
    Filed: November 27, 2018
    Publication date: May 28, 2020
    Inventor: Cheng-Nan Tsai
  • Patent number: 10631789
    Abstract: A biometric detection module including a light source module, a detection region and a control module is provided. The light source module is configured to emit green light, red light and IR light in a time division manner to illuminate a skin surface. The detection region is configured to detect penetration light emitted from the light source module for illuminating the skin surface and passing through body tissues to correspondingly generate a green light signal, a red light signal and an IR light signal. The control module is configured to determine a filtering parameter according to the green light signal to accordingly filter the red light signal and the IR light signal, and calculate a biometric characteristic according to at least one of the green light signal, a filtered red light signal and a filtered IR light signal.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: April 28, 2020
    Assignee: PIXART IMAGING INC.
    Inventors: Chih-Yuan Chuang, Cheng-Nan Tsai, Ming-Tsan Kao, Ren-Hau Gu, Yen-Min Chang
  • 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
  • Patent number: 10282036
    Abstract: An image processing method includes obtaining a background picture including a first and second pixel, wherein the first pixel has a first intensity value in response to that a first sensing element is operated by a fixed exposure time, and the second pixel has a second intensity value in response to that a second image sensing element is operated by the fixed exposure time; extracting the first and second intensity value from the first and second pixel, respectively; performing a computing operation including computing a first exposure time and a second exposure time; and operating the first image sensing element by the first exposure time and the second image sensing element by the second exposure time after the computing operation.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: May 7, 2019
    Assignee: PIXART IMAGING INC.
    Inventors: Tzung Min Su, Ren Hau Gu, Chih Hsin Lin, Cheng Nan Tsai
  • Publication number: 20190086267
    Abstract: A wearable device includes a case and a far infrared temperature sensing device. The case has a first opening. The far infrared temperature sensing device is disposed inside the case of the wearable device. The far infrared temperature sensing device includes an assembly structure, a sensor chip, a filter structure, and a metal shielding structure. The assembly structure has an accommodating space and a top opening. The sensor chip is disposed in the accommodating space of the assembly structure. The filter structure is disposed above the sensor chip. The metal shielding structure is disposed above the sensor chip, and has a second opening to expose the filter structure. The first and second openings are communicated to cooperatively define a through hole.
    Type: Application
    Filed: November 16, 2018
    Publication date: March 21, 2019
    Inventors: CHIH-MING SUN, MING-HAN TSAI, CHENG-NAN TSAI
  • Publication number: 20190015049
    Abstract: A biometric detection module including a light source module, a detection region and a control module is provided. The light source module is configured to emit green light, red light and IR light in a time division manner to illuminate a skin surface. The detection region is configured to detect penetration light emitted from the light source module for illuminating the skin surface and passing through body tissues to correspondingly generate a green light signal, a red light signal and an IR light signal. The control module is configured to determine a filtering parameter according to the green light signal to accordingly filter the red light signal and the IR light signal, and calculate a biometric characteristic according to at least one of the green light signal, a filtered red light signal and a filtered IR light signal.
    Type: Application
    Filed: September 4, 2018
    Publication date: January 17, 2019
    Inventors: Chih-Yuan Chuang, Cheng-Nan Tsai, Ming-Tsan Kao, Ren-Hau Gu, Yen-Min Chang
  • Patent number: 10168220
    Abstract: A wearable device includes a case and a far infrared temperature sensing device. The case has a first opening. The far infrared temperature sensing device is disposed inside the case of the wearable device. The far infrared temperature sensing device includes an assembly structure, a sensor chip, a filter structure, and a metal shielding structure. The assembly structure has an accommodating space and a top opening. The sensor chip is disposed in the accommodating space of the assembly structure. The filter structure is disposed above the sensor chip. The metal shielding structure is disposed above the sensor chip, and has a second opening to expose the filter structure. The first and second openings are communicated to cooperatively define a through hole.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: January 1, 2019
    Assignee: PIXART IMAGING INC.
    Inventors: Chih-Ming Sun, Ming-Han Tsai, Cheng-Nan Tsai
  • Publication number: 20180360382
    Abstract: An optical measurement device with pressure feedback function includes an optical detecting module and a stretchable connective belt. The optical detecting module is adapted to output at least one optical detecting signal to detect pressure applied on an object. The stretchable connective belt is assembled with the optical detecting module and utilized to tie the optical detecting module on the object, and the stretchable connective belt is deformed to vary the pressure generated by the optical detecting module.
    Type: Application
    Filed: June 18, 2017
    Publication date: December 20, 2018
    Inventor: Cheng-Nan Tsai
  • Patent number: 10092244
    Abstract: A biometric detection module including a light source module, a detection region and a control module is provided. The light source module is configured to emit green light, red light and IR light in a time division manner to illuminate a skin surface. The detection region is configured to detect penetration light emitted from the light source module for illuminating the skin surface and passing through body tissues to correspondingly generate a green light signal, a red light signal and an IR light signal. The control module is configured to determine a filtering parameter according to the green light signal to accordingly filter the red light signal and the IR light signal, and calculate a biometric characteristic according to at least one of the green light signal, a filtered red light signal and a filtered IR light signal.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: October 9, 2018
    Assignee: PIXART IMAGING INC.
    Inventors: Chih-Yuan Chuang, Cheng-Nan Tsai, Ming-Tsan Kao, Ren-Hau Gu, Yen-Min Chang
  • 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
  • Patent number: 10039453
    Abstract: An optical detecting module with waterproofing function can be installed on a housing of a wearable device and includes an optical detecting component, a light source and a packaging structure. The light source is disposed by the optical detecting component, and the packaging structure provides the waterproofing function to the optical detecting component and the light source. The packaging structure includes a main body, a light emitting unit, alight incoming unit and a waterproofing component. The main body covers the optical detecting component and the light source. The light emitting unit and the light incoming unit are disposed on the main body and respectively face the light source and the optical detecting component. The waterproofing component is filled into a gap formed between the main body and the housing, to prevent moisture from leaking into the gap to rust terminals of the optical detecting component and the light source.
    Type: Grant
    Filed: May 25, 2015
    Date of Patent: August 7, 2018
    Assignee: PixArt Imaging Inc.
    Inventors: Cheng-Nan Tsai, Hung-Ching Lai, Chih-Yuan Chuang, Hung-Yu Lai, Yung-Chang Lin, Yi-Min Liu, Ren-Hau Gu
  • Patent number: 9984222
    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: Grant
    Filed: October 2, 2017
    Date of Patent: May 29, 2018
    Assignee: PIXART IMAGING INC
    Inventors: Chih-Yuan Chuang, Cheng-Nan Tsai, Yen-Min Chang
  • Publication number: 20180049702
    Abstract: An optical detection method for detecting physiological characteristic(s), includes: providing at least one light emitting unit; disposing the light emitting unit on a first plane to emit light to a skin surface position of a human body part to be detected of a user; providing at least one optical sensing circuit; disposing the optical sensing circuit on a second plane to receive a sensing result of Photoplethysmography (PPG) signal from another skin surface position of the human body part to be detected; and generating a physiological characteristic(s) detection result according to the sensing result; the first plane is different and distinct from the second plane, and a substantial angle is formed between the two plans.
    Type: Application
    Filed: December 27, 2016
    Publication date: February 22, 2018
    Inventor: Cheng-Nan Tsai
  • Publication number: 20180025143
    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: October 2, 2017
    Publication date: January 25, 2018
    Inventors: Chih-Yuan CHUANG, Cheng-Nan TSAI, Yen-Min CHANG