Patents by Inventor Ren-Hau Gu

Ren-Hau Gu 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: 20250185932
    Abstract: This instant disclosure provides a heart rate detecting device which includes an image sensor. The image sensor generates a first mixed signal within a first interval and generates a second mixed signal within a second interval, wherein the first mixed signal contains light information of first multiple light wavelengths having a first intensity ratio from one another, and the second mixed signal contains light information of second multiple light wavelengths having a second intensity ratio, different from the first intensity ratio, from one another.
    Type: Application
    Filed: February 20, 2025
    Publication date: June 12, 2025
    Inventor: REN-HAU GU
  • Patent number: 12322211
    Abstract: There is provided an electronic device arranged to be unlocked using a fingerprint. The electronic device includes a touch pad, a processor and an operation system. The touch pad acquires fingerprint data within sequential multiple time intervals, respectively. The processor recognizes a fingerprint of each time interval according to the fingerprint data. Upon a sequence and an operating feature of multiple fingerprints matching a predetermined condition, the processor controls the operation system to unlock the electronic device.
    Type: Grant
    Filed: April 28, 2023
    Date of Patent: June 3, 2025
    Assignee: PIXART IMAGING INC.
    Inventors: Tzung-Min Su, Yu-Ju Lee, Ren-Hau Gu
  • Publication number: 20250098968
    Abstract: There is provided a physiological detection device for detecting physiological signals via a skin surface and including a first light source, a second light source, a first light sensor, a second light sensor and a processor. The first light source emits light via an optical element that causes the first light sensor and the second light sensor to receive different percentages of light energy of the first light source. The first light sensor and the second light sensor receive the same percentage of light energy of the second light source. The processor adjusts emission intensity of the first light source according to an intensity difference between two light energies received by the first and second light sensors as well as an intensity variation of light energy received by the first light sensor to alleviate motion artifacts in the physiological signals.
    Type: Application
    Filed: September 25, 2023
    Publication date: March 27, 2025
    Inventors: Ren-Hau GU, Hsiu-Ling YEH
  • Patent number: 12257039
    Abstract: This instant disclosure provides a heart rate detecting device which includes an image sensor. The image sensor generates a first mixed signal within a first interval and generates a second mixed signal within a second interval, wherein the first mixed signal contains light information of first multiple light wavelengths having a first intensity ratio from one another, and the second mixed signal contains light information of second multiple light wavelengths having a second intensity ratio, different from the first intensity ratio, from one another.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: March 25, 2025
    Assignee: PIXART IMAGING INC.
    Inventor: Ren-Hau Gu
  • Patent number: 12220215
    Abstract: A physiological detection system including an image sensor, a converting unit, a retrieving unit and a processing unit is provided. The image sensor includes a plurality of pixels respectively configured to output a PPG signal. The converting unit is configured to convert a plurality of PPG signals of a plurality of pixels regions to a plurality of frequency domain signals. The retrieving unit is configured to respectively retrieve a spectral energy of the frequency domain signals corresponding to each of the pixel regions. The processing unit is configured to construct a 3D energy distribution according to the spectral energies.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: February 11, 2025
    Assignee: PIXART IMAGING INC.
    Inventors: Sen-Huang Huang, Ren-Hau Gu
  • Patent number: 12213780
    Abstract: A wearable device is illustrated. The wearable device has a body, at least one light emitting unit, at least one light sensing unit and an action recognition module. The wearable device is suitable for wearing on a wrist of a user. The light emitting unit is disposed on an inner side of the body, and the light emitting unit emits a light beam illuminating at least a portion of the wrist. The light sensing unit operatively senses the light beam reflected by the at least portion of the wrist and generates a light sensing signal. The action recognition module is configured to operatively determine a function that corresponds to an action of the user.
    Type: Grant
    Filed: March 15, 2024
    Date of Patent: February 4, 2025
    Assignee: PIXART IMAGING INC.
    Inventors: Ren-Hau Gu, Chung-Wen Lo
  • Patent number: 12193785
    Abstract: There is provided a physiological detection device including a light source, a light detector, a processing unit and a display device. The light source emits light to illuminate a skin surface. The light detector receives the light from the skin surface to output detected signals. The processing unit confirms an attached state according to the detected signals and controls the display device to show an indication signal or a warning message when the attached state is confirmed not good.
    Type: Grant
    Filed: April 8, 2024
    Date of Patent: January 14, 2025
    Assignee: PIXART IMAGING INC.
    Inventors: Ming-Chang Li, Ren-Hau Gu
  • Patent number: 12171534
    Abstract: A physiological detection system including an image sensor, a converting unit, a retrieving unit and a processing unit is provided. The image sensor includes a plurality of pixels respectively configured to output a PPG signal. The converting unit is configured to convert a plurality of PPG signals of a plurality of pixels regions to a plurality of frequency domain signals. The retrieving unit is configured to respectively retrieve a spectral energy of the frequency domain signals corresponding to each of the pixel regions. The processing unit is configured to construct a 3D energy distribution according to the spectral energies.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: December 24, 2024
    Assignee: PIXART IMAGING INC.
    Inventors: Sen-Huang Huang, Ren-Hau Gu
  • Publication number: 20240382159
    Abstract: There is provided a physiological detection device including a white light source, a molding and a pixel array. The white light source is configured to emit white light having a color temperature between 2800K and 3200K. The molding is formed upon the white light source and configured to constrain an emission angle of the white light between 60 and 80 degrees. The pixel array is covered by a filter layer having a passband between 570 nm and 620 nm configured to filter the white light.
    Type: Application
    Filed: July 29, 2024
    Publication date: November 21, 2024
    Inventors: REN-HAU GU, Chih-Hsin Lin
  • Publication number: 20240362952
    Abstract: There is provided an electronic device arranged to be unlocked using a fingerprint. The electronic device includes a touch pad, a processor and an operation system. The touch pad acquires fingerprint data within sequential multiple time intervals, respectively. The processor recognizes a fingerprint of each time interval according to the fingerprint data. Upon a sequence and an operating feature of multiple fingerprints matching a predetermined condition, the processor controls the operation system to unlock the electronic device.
    Type: Application
    Filed: April 28, 2023
    Publication date: October 31, 2024
    Inventors: Tzung-Min SU, Yu-Ju LEE, Ren-Hau GU
  • Publication number: 20240350044
    Abstract: An optical data sensing device of a biological information measuring device, comprising: an optical sensor; a first light emitting device, configured to emit first light away from the optical sensor; and a first opaque isolation component, located between the optical sensor and the first light emitting device, configured to reduce the first light received by the optical sensor. The present invention also discloses an optical data sensing device comprising a plurality of light emitting devices with different emitting directions or wavelengths, to improve the accuracy of biological information measuring.
    Type: Application
    Filed: July 1, 2024
    Publication date: October 24, 2024
    Applicant: PixArt Imaging Inc.
    Inventors: Ren-Hau Gu, Hsiu-Ling Yeh
  • Patent number: 12082947
    Abstract: There is provided a physiological detection device including a white light source, a molding and a pixel array. The white light source is configured to emit white light having a color temperature between 2800K and 3200K. The molding is formed upon the white light source and configured to constrain an emission angle of the white light between 60 and 80 degrees. The pixel array is covered by a filter layer having a passband between 570 nm and 620 nm configured to filter the white light.
    Type: Grant
    Filed: May 22, 2023
    Date of Patent: September 10, 2024
    Inventors: Ren-Hau Gu, Chih-Hsin Lin
  • Patent number: 12048536
    Abstract: An optical data sensing device of a biological information measuring device, comprising: an optical sensor; a first light emitting device, configured to emit first light away from the optical sensor; and a first opaque isolation component, located between the optical sensor and the first light emitting device, configured to reduce the first light received by the optical sensor. The present invention also discloses an optical data sensing device comprising a plurality of light emitting devices with different emitting directions or wavelengths, to improve the accuracy of biological information measuring.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: July 30, 2024
    Assignee: PixArt Imaging Inc.
    Inventors: Ren-Hau Gu, Hsiu-Ling Yeh
  • Publication number: 20240245297
    Abstract: There is provided a physiological detection device including a light source, a light detector, a processing unit and a display device. The light source emits light to illuminate a skin surface. The light detector receives the light from the skin surface to output detected signals. The processing unit confirms an attached state according to the detected signals and controls the display device to show an indication signal or a warning message when the attached state is confirmed not good.
    Type: Application
    Filed: April 8, 2024
    Publication date: July 25, 2024
    Inventors: MING-CHANG LI, REN-HAU GU
  • Publication number: 20240238646
    Abstract: There is provided a treadmill capable of performing the fall detection. The treadmill includes a light sensor and a processor. The light sensor acquires an image frame toward an operation space. The processor performs the occupancy detection on the image frame using face detection and human detection. Upon not detecting the operation space being occupied by any user during a running state of the treadmill, the processor deactivates the treadmill and raises a fall alarm.
    Type: Application
    Filed: May 25, 2023
    Publication date: July 18, 2024
    Inventors: Ming Shun Manson FEI, Sen-Huang HUANG, Kai-Shun CHEN, Ting-Yang CHANG, Ren-Hau GU, Yuan-Hsin LIAO
  • Publication number: 20240215868
    Abstract: A wearable device is illustrated. The wearable device has a body, at least one light emitting unit, at least one light sensing unit and an action recognition module. The wearable device is suitable for wearing on a wrist of a user. The light emitting unit is disposed on an inner side of the body, and the light emitting unit emits a light beam illuminating at least a portion of the wrist. The light sensing unit operatively senses the light beam reflected by the at least portion of the wrist and generates a light sensing signal. The action recognition module is configured to operatively determine a function that corresponds to an action of the user.
    Type: Application
    Filed: March 15, 2024
    Publication date: July 4, 2024
    Inventors: REN-HAU GU, CHUNG-WEN LO
  • Patent number: 11980440
    Abstract: There is provided a physiological detection device including a light source, a light detector, a processing unit and a display device. The light source emits light to illuminate a skin surface. The light detector receives the light from the skin surface to output detected signals. The processing unit confirms an attached state according to the detected signals and controls the display device to show an indication signal or a warning message when the attached state is confirmed not good.
    Type: Grant
    Filed: December 7, 2022
    Date of Patent: May 14, 2024
    Assignee: PIXART IMAGING INC.
    Inventors: Ming-Chang Li, Ren-Hau Gu
  • Patent number: 11969243
    Abstract: A wearable device is illustrated. The wearable device has a body, at least one light emitting unit, at least one light sensing unit and an action recognition module. The wearable device is suitable for wearing on a movable part of a user. The light emitting unit is disposed on an inner side of the body, wherein the light emitting unit emits a light beam illuminating at least a portion of the movable part. The light sensing unit operatively senses the light beam reflected by the at least portion of the movable part and generates a light sensing signal. The action recognition module is configured to operatively determine a function that corresponds to an action of the user.
    Type: Grant
    Filed: April 18, 2023
    Date of Patent: April 30, 2024
    Assignee: PIXART IMAGING INC.
    Inventors: Ren-Hau Gu, Chung-Wen Lo
  • 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: 20230309930
    Abstract: There is provided a physiological detection device including a white light source, a molding and a pixel array. The white light source is configured to emit white light having a color temperature between 2800K and 3200K. The molding is formed upon the white light source and configured to constrain an emission angle of the white light between 60 and 80 degrees. The pixel array is covered by a filter layer having a passband between 570 nm and 620 nm configured to filter the white light.
    Type: Application
    Filed: May 22, 2023
    Publication date: October 5, 2023
    Inventors: Ren-Hau GU, Chih-Hsin LIN