Patents by Inventor Han Yao

Han Yao 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: 20230217101
    Abstract: The embodiments of the disclosure provide a data processing system, a data processing method, and a computer readable storage medium. The method includes: receiving a positioning data from a positioning device, wherein the positioning data corresponds to a camera device; receiving a lens parameter of the camera device from a lens encoder; encapsulating the positioning data and the lens parameter in at least one data packet; and sending the at least one data packet to a data processing device by a network interface.
    Type: Application
    Filed: August 14, 2022
    Publication date: July 6, 2023
    Applicant: HTC Corporation
    Inventors: Tun-Han Yao, Bo-Xun Wang
  • Publication number: 20230215111
    Abstract: The embodiments of the disclosure provide a data processing system, a method for determining coordinates, and a computer readable storage medium. The method includes: receiving a plurality of positioning data, wherein the plurality of positioning data correspond to device positions of a plurality of positioning devices in a real world, and the positioning devices comprise a first positioning device and a second positioning device; in response to determining that the first positioning device is selected as a reference point of a coordinate system of a virtual world, determining a coordinate of the second positioning device in the coordinate system of the virtual world based on a relative position between the device positions of the first positioning device and the second positioning device.
    Type: Application
    Filed: August 11, 2022
    Publication date: July 6, 2023
    Applicant: HTC Corporation
    Inventors: Tun-Han Yao, Bo-Xun Wang
  • Publication number: 20230209021
    Abstract: A method of an image sensor circuit includes: providing an event camera comprising at least one pixel unit; using the event camera to sense at least one current pixel value of the at least one pixel unit to detect whether at least one pixel value changes; when the at least one pixel value changes, using the event camera to trigger the digital processing circuit when the digital processing circuit is in a power saving mode and transmit information of the at least one pixel value to the digital processing circuit.
    Type: Application
    Filed: February 20, 2023
    Publication date: June 29, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Chih-Huan Wu, Wen-Han Yao
  • Patent number: 11622092
    Abstract: A method of an image sensor circuit includes: providing an event camera comprising at least one pixel unit; using the event camera to sense at least one current pixel value of the at least one pixel unit to detect whether at least one pixel value changes; when the at least one pixel value changes, using the event camera to trigger the digital processing circuit when the digital processing circuit is in a power saving mode and transmit information of the at least one pixel value to the digital processing circuit.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: April 4, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Chih-Huan Wu, Wen-Han Yao
  • Patent number: 11614322
    Abstract: There is provided an imaging system including a camera and a control host. The camera identifies ambient light intensity and performs trigger event detection in a low power mode. When the camera detects a trigger event in the low power mode, the control host is woken up. The camera also determines an exposure mode according the ambient light intensity and informs the exposure mode to the control host such that an operating mode of the control host after being woken up matches the exposure mode of the camera.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: March 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Wen-Han Yao, Wen-Cheng Yen, Han-Chang Lin
  • Publication number: 20230093565
    Abstract: There is provided an imaging system including a camera and a control host. The camera identifies ambient light intensity and performs trigger event detection in a low power mode. When the camera detects a trigger event in the low power mode, the control host is woken up. The camera also determines an exposure mode according the ambient light intensity and informs the exposure mode to the control host such that an operating mode of the control host after being woken up matches the exposure mode of the camera.
    Type: Application
    Filed: November 29, 2022
    Publication date: March 23, 2023
    Inventors: WEN-HAN YAO, WEN-CHENG YEN, HAN-CHANG LIN
  • Patent number: 11595611
    Abstract: There is provided a pixel circuit including a first circuit and a second circuit. The first circuit is used to output a first voltage associated with exposure intensity. The second circuit is used to output a second voltage associated with exposure time interval. The processor multiples the first voltage to a ratio between a reference voltage and the second voltage to obtain an actual light intensity, wherein the reference voltage is a voltage value outputted by the second circuit of a dummy pixel.
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: February 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: Wen-Han Yao
  • Publication number: 20230011294
    Abstract: There is provided a barcode detection device including an image sensor and a processor. The image sensor captures an image frame of a barcode. The processor calculates a gradient vector of bars of the barcode in the image frame for determining a rotation angle of the image sensor. The rotation angle is used to calibrate a detected bar width.
    Type: Application
    Filed: September 23, 2022
    Publication date: January 12, 2023
    Inventor: Wen-Han YAO
  • Patent number: 11544489
    Abstract: There is provided a barcode detection device including an image sensor and a processor. The image sensor captures an image frame of a barcode. The processor calculates a gradient vector of bars of the barcode in the image frame for determining a rotation angle of the image sensor. The rotation angle is used to calibrate a detected bar width.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: January 3, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: Wen-Han Yao
  • Publication number: 20220383015
    Abstract: There is provided a barcode detection device including an image sensor and a processor. The image sensor captures an image frame of a barcode. The processor calculates a gradient vector of bars of the barcode in the image frame for determining a rotation angle of the image sensor. The rotation angle is used to calibrate a detected bar width.
    Type: Application
    Filed: May 28, 2021
    Publication date: December 1, 2022
    Inventor: Wen-Han YAO
  • Patent number: 11470264
    Abstract: There is provided an image sensor for exposing a plurality of pixel rows within a frame period using a rolling shutter. The image sensor includes a processor for calculating bright-dark distribution patterns of image frames. The processor further adjusts the frame period to be substantially identical to a predetermined period by changing a total number of exposed line times within the frame period when a difference between the bright-dark distribution patterns of two image frames is larger than a predetermined threshold.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: October 11, 2022
    Assignee: PIXART IMAGING INC.
    Inventor: Wen-Han Yao
  • Publication number: 20220321828
    Abstract: A motion detection method applied into an image sensor device includes: providing a plurality of regions of interest (ROIs) on at least one monitoring image; for each region of interest (ROI): detecting whether at least one motion event occurs within the each ROI; and determining a priority level of the each ROI according to at least one feature information of the at least one motion event; and determining an alarm schedule of the ROIs for a user according to a plurality of priority levels of the ROIs.
    Type: Application
    Filed: June 23, 2022
    Publication date: October 6, 2022
    Applicant: PixArt Imaging Inc.
    Inventors: Chih-Huan Wu, Yi-Hsien Ko, Wen-Han Yao
  • Publication number: 20220321818
    Abstract: There is provided a pixel circuit including a first circuit and a second circuit. The first circuit is used to output a first voltage associated with exposure intensity. The second circuit is used to output a second voltage associated with exposure time interval. The processor multiples the first voltage to a ratio between a reference voltage and the second voltage to obtain an actual light intensity, wherein the reference voltage is a voltage value outputted by the second circuit of a dummy pixel.
    Type: Application
    Filed: June 20, 2022
    Publication date: October 6, 2022
    Inventor: WEN-HAN YAO
  • Patent number: 11412169
    Abstract: There is provided a pixel circuit including a first circuit and a second circuit. The first circuit is used to output a first voltage associated with exposure intensity. The second circuit is used to output a second voltage associated with exposure time interval. The processor multiples the first voltage to a ratio between a reference voltage and the second voltage to obtain an actual light intensity, wherein the reference voltage is a voltage value outputted by the second circuit of a dummy pixel.
    Type: Grant
    Filed: October 13, 2020
    Date of Patent: August 9, 2022
    Assignee: PIXART IMAGING INC.
    Inventor: Wen-Han Yao
  • Patent number: 11409976
    Abstract: There is provided a barcode detection device including an image sensor and a processor. The image sensor captures an image frame of a color barcode. The processor sequentially processes every row of the image frame to find at least one color segment in each row of the image frame, categorizes color segments of a same color in one cluster according to a position relationship and a color similarity of the color segments in the image frame, and averages color parameters of pixels in one cluster to accordingly recognize a color of the pixels in said one cluster.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: August 9, 2022
    Assignee: PIXART IMAGING INC.
    Inventor: Wen-Han Yao
  • Patent number: 11405581
    Abstract: A motion detection method applied into an image sensor device includes: providing a plurality of regions of interest (ROIs) on at least one monitoring image; for each region of interest (ROI): detecting whether at least one motion event occurs within the each ROI; and determining a priority level of the each ROI according to at least one feature information of the at least one motion event; and determining an alarm schedule of the ROIs for a user according to a plurality of priority levels of the RIOs.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: August 2, 2022
    Assignee: PixArt Imaging Inc.
    Inventors: Chih-Huan Wu, Yi-Hsien Ko, Wen-Han Yao
  • Publication number: 20220239868
    Abstract: A method of an optical sensor device includes: automatically entering a calibration mode to automatically define a region of interest as a masking region; and, selectively ignoring a motion detected within the masking region when the optical sensor device is in a normal operation mode.
    Type: Application
    Filed: April 12, 2022
    Publication date: July 28, 2022
    Applicant: PixArt Imaging Inc.
    Inventors: Joon Chok LEE, Kevin Len-Li LIM, Wen-Han Yao
  • Patent number: 11336870
    Abstract: A smart motion detection device with a determining method includes a memory, a processor, and a sensor array coupled to the memory and the processor. An image captured by the sensor array is processed by the processor. The sensor array is adapted to pre-store the image into the memory when the processor is operated in the sleep mode, and the pre-stored image is transmitted to the processor when the processor is operated in the wakeup mode. The sensor array includes a comparator adapted to generate an alarm signal for switching the processor from the sleep mode to the wakeup mode in accordance with a comparison result of the pre-stored image. The determining method includes the processor analyzing images captured by the sensor array when the sensor array is activated to capture the images, and the processor analyzing images pre-stored inside the memory when the sensor array is not activated.
    Type: Grant
    Filed: January 18, 2021
    Date of Patent: May 17, 2022
    Assignee: PixArt Imaging Inc.
    Inventors: Wen-Cheng Yen, Wen-Han Yao
  • Patent number: 11336869
    Abstract: A motion detection method utilized for a motion sensor includes: capturing a monitoring image; entering a recording mode when one intensity change value between the monitoring image and a pre-stored background image is higher than a first threshold and a trigger signal is received from an auxiliary sensor; and entering the recording mode when the intensity change value is higher than a second threshold before the trigger signal is received; wherein the second threshold is higher than the first threshold.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: May 17, 2022
    Assignee: PixArt Imaging Inc.
    Inventors: Wen-Han Yao, Chih-Huan Wu
  • Publication number: 20220062160
    Abstract: A method for inhibiting skin acne formation, reducing Cutibacterium acnes secretions, and/or reducing advanced glycation end-products (AGEs) comprising administering to a subject in need thereof a composition comprising an effective amount of a Wasabia japonica leaf extract is provided. The composition is used for increasing skin water content, improving skin firmness, reducing skin wrinkles, inhibiting the production of skin wrinkles, inhibiting the production of skin spots, inhibiting the production of melanin, and inhibiting the production of acne.
    Type: Application
    Filed: October 29, 2021
    Publication date: March 3, 2022
    Inventors: YUNG-HSIANG LIN, TSAI-HAN YAO