Patents by Inventor Guo ZHEN

Guo ZHEN 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: 12379499
    Abstract: There is provided an optical distance measurement device including a processor embedded with a first algorithm and a second algorithm. The first algorithm is used to calculate an object depth when an obstacle is distanced from the distance measurement device smaller than a predetermined distance. The second algorithm is used to calculate an object depth when the obstacle is distanced from the distance measurement device larger than the predetermined distance.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: August 5, 2025
    Assignee: PIXART IMAGING INC.
    Inventor: Guo-Zhen Wang
  • Publication number: 20250244222
    Abstract: There is provided a smoke detector including a light source, a diffractive optical element, a light sensor, a reflective tilted surface, and a light trap region. The light source projects a shaped light beam on the reflective tilted surface via the diffractive optical element. The reflective tilted surface is arranged right above the light trap region, and used to reflect the shaped light beam to the light trap region. A first light blocking wall is arranged between the light source and the light sensor. A second light blocking wall, higher than the first light blocking wall, is arranged between the light sensor and the light trap region.
    Type: Application
    Filed: January 29, 2024
    Publication date: July 31, 2025
    Inventors: Guo-Zhen WANG, Ching-Kun CHEN
  • Patent number: 12360537
    Abstract: There is provided a moving robot including a first light source module and a second light source module respectively project a first light section and a second light section, which are vertical light sections, in front of a moving direction, wherein the first light section and the second light section cross with each other at a predetermined distance in front of the moving robot so as to eliminate a detection dead zone between the first light source module and the second light source module in front of the moving robot to avoid collision with an object during operation.
    Type: Grant
    Filed: April 17, 2024
    Date of Patent: July 15, 2025
    Assignee: PIXART IMAGING INC.
    Inventors: Shih-Chin Lin, Wei-Chung Wang, Guo-Zhen Wang
  • Publication number: 20250222593
    Abstract: There is provided a cleaning robot including a light source module and an image sensor. The light source module projects a horizontal line pattern toward a moving direction. The image sensor captures, toward the moving direction, an image of the horizontal line pattern. The light source module is arranged below the image sensor so as to eliminate the interference from second reflection.
    Type: Application
    Filed: March 27, 2025
    Publication date: July 10, 2025
    Inventors: CHI-CHIEH LIAO, Guo-Zhen Wang
  • Publication number: 20250200709
    Abstract: An image generation device, for generating an output image with first absolute depth information, comprising: at least one image sensor, configured to generate at least one first image with a first resolution and at least one second image with a second resolution, wherein the first image does not have depth information and the second image has second absolute depth information, wherein the first resolution is higher than the second resolution; and a processing circuit, configured to use a depth estimation engine to generate at least one third image with a third resolution according to the first image, wherein the third image has relative depth information; wherein the processing circuit further uses a fusion engine to fuse the second image and the third image to generate the output image.
    Type: Application
    Filed: December 13, 2023
    Publication date: June 19, 2025
    Applicant: PixArt Imaging Inc.
    Inventor: Guo-Zhen Wang
  • Publication number: 20250189977
    Abstract: There is provided a moving robot including alight projector, an image sensor and a processing unit. The light projector projects a vertical light segment and a horizontal light segment toward a moving direction. The image sensor captures, toward the moving direction, an image frame containing a first light segment image associated with the vertical light segment and a second light segment image associated with the horizontal light segment. The processing unit recognizes a plush carpet in the moving direction when a vibration intensity of the second light segment image is higher than a predetermined threshold, and an obstacle height calculated according to the first light segment image is larger than a height threshold.
    Type: Application
    Filed: February 21, 2025
    Publication date: June 12, 2025
    Inventor: GUO-ZHEN WANG
  • Patent number: 12285876
    Abstract: There is provided a cleaning robot including a light source module and an image sensor. The light source module projects a horizontal line pattern toward a moving direction. The image sensor captures, toward the moving direction, an image of the horizontal line pattern. The light source module is arranged below the image sensor so as to eliminate the interference from second reflection.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: April 29, 2025
    Assignee: PIXART IMAGING INC.
    Inventors: Chi-Chieh Liao, Guo-Zhen Wang
  • Patent number: 12284448
    Abstract: There is provided an optical distance measurement system including an image sensor and a processing unit. The processing unit is configured to generate an image to be calculated according to at least one image captured by the image sensor, wherein different image regions of the image to be calculated correspond to different exposure times thereby improving the accuracy of the distance calculation.
    Type: Grant
    Filed: December 15, 2022
    Date of Patent: April 22, 2025
    Assignee: PIXART IMAGING INC.
    Inventors: Guo-Zhen Wang, Shiaw-Yu Jou
  • Publication number: 20250120555
    Abstract: A material determining device comprising a first image sensor, a second image sensor, and a light source is provided. The material determining method comprises: (a) sensing a first image by the first image sensor according to light from the light source; (b) sensing a second image by the second image sensor according to the light; and (c) determining whether material corresponding to material images in the first image and the second image is first type of material or second type of material, according to locations of the material images in the first image and the second image and according to shapes of the material images in the first image and the second image. By this way an electronic device using the material determining device can properly operate according to the type of material.
    Type: Application
    Filed: December 18, 2024
    Publication date: April 17, 2025
    Applicant: PixArt Imaging Inc.
    Inventor: Guo-Zhen Wang
  • Publication number: 20250116608
    Abstract: An optical sensing system and an optical sensing method are provided. The system includes a bright-field light source, a dark-field light source, an optical detecting circuit, and a processing circuit.
    Type: Application
    Filed: October 9, 2023
    Publication date: April 10, 2025
    Inventor: GUO-ZHEN WANG
  • Publication number: 20250106495
    Abstract: An electronic system including an image sensor, a face detection engine, an eye detection engine and an eye protection engine is provided. The image sensor captures an image. The face detection engine recognizes a user face in the image. The eye detection engine recognizes user eyes in the image. The eye protection engine turns off a display device when the user eyes are recognized in the image but the user face is not recognized in the image.
    Type: Application
    Filed: December 6, 2024
    Publication date: March 27, 2025
    Inventors: HAN-CHANG LIN, GUO-ZHEN WANG, NIEN-TSE CHEN
  • Patent number: 12259732
    Abstract: There is provided a moving robot including a light projector, an image sensor and a processing unit. The light projector projects a vertical light segment and a horizontal light segment toward a moving direction. The image sensor captures, toward the moving direction, an image frame containing a first light segment image associated with the vertical light segment and a second light segment image associated with the horizontal light segment. The processing unit recognizes a plush carpet in the moving direction when a vibration intensity of the second light segment image is higher than a predetermined threshold, and an obstacle height calculated according to the first light segment image is larger than a height threshold.
    Type: Grant
    Filed: September 28, 2023
    Date of Patent: March 25, 2025
    Assignee: PIXART IMAGING INC.
    Inventor: Guo-Zhen Wang
  • Patent number: 12253606
    Abstract: Disclosed are a distance measuring method and a distance measuring apparatus. During the distance measuring, an image is obtained. If the location of a center of gravity of the image is within a first segment, the calculating unit calculates a distance between the object and the distance measuring apparatus corresponding to the projection point, according to a first mapping relationship and the location of a center of gravity of the image. If the location of a center of gravity of the image is within a second segment, the calculating unit calculates a distance between the object and the distance measuring apparatus corresponding to the projection point according to a second mapping relationship and the location of a center of gravity of the image.
    Type: Grant
    Filed: September 19, 2023
    Date of Patent: March 18, 2025
    Assignee: PIXART IMAGING INC.
    Inventors: Guo-Zhen Wang, Ming-Tsan Kao
  • Patent number: 12216063
    Abstract: An electronic device, comprising: a first light source, configured to emit first light; a second light source, configured to emit second light; a first optical sensor, configured to sense first optical data generated based on reflected light of the first light; a light guiding device, configured to receive the second light; and a second optical sensor, configured to sense second optical data generated based on the second light emitted by the light guiding device. The first optical sensor and the second optical sensor can be integrated to a single optical sensor.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: February 4, 2025
    Assignee: PixArt Imaging Inc.
    Inventors: Tsung-Fa Wang, Hung-Ching Lai, Guo-Zhen Wang
  • Patent number: 12208527
    Abstract: An air ejection device, configured to eject air; a distance detecting circuit, configured to detect distances between an electronic device comprising the object determining system and at least one location of an object when the air ejection device ejects air to the object; and a determining circuit, configured to determine whether the object is a rigidity type object or a soft type object according to the variations.
    Type: Grant
    Filed: October 19, 2023
    Date of Patent: January 28, 2025
    Assignee: PixArt Imaging Inc.
    Inventor: Guo-Zhen Wang
  • Patent number: 12207786
    Abstract: A material determining device comprising a first image sensor, a second image sensor, and a light source is provided. The material determining method comprises: (a) sensing a first image by the first image sensor according to light from the light source; (b) sensing a second image by the second image sensor according to the light; and (c) determining whether material corresponding to material images in the first image and the second image is first type of material or second type of material, according to locations of the material images in the first image and the second image and according to shapes of the material images in the first image and the second image. By this way an electronic device using the material determining device can properly operate according to the type of material.
    Type: Grant
    Filed: September 18, 2022
    Date of Patent: January 28, 2025
    Assignee: PixArt Imaging Inc.
    Inventor: Guo-Zhen Wang
  • Patent number: 12206978
    Abstract: An electronic system including an image sensor, a face detection engine, an eye detection engine and an eye protection engine is provided. The image sensor captures an image. The face detection engine recognizes a user face in the image. The eye detection engine recognizes user eyes in the image. The eye protection engine turns off a display device when the user eyes are recognized in the image but the user face is not recognized in the image.
    Type: Grant
    Filed: November 16, 2023
    Date of Patent: January 21, 2025
    Inventors: Han-Chang Lin, Guo-Zhen Wang, Nien-Tse Chen
  • Patent number: 12204029
    Abstract: There is provided a mobile robot that performs the obstacle avoidance and visual simultaneous localization and mapping (VSLAM) according to image frames captured by the same optical sensor. The mobile robot includes a pixel array and a processor. An upper part of the pixel array is not coated with any filter and a lower part of the pixel array is coated with an IR filter. The processor performs range estimation using pixel data corresponding to the lower part of the pixel array, and perform the VSLAM using pixel data corresponding to the upper part of the pixel array.
    Type: Grant
    Filed: October 11, 2023
    Date of Patent: January 21, 2025
    Assignee: PIXART IMAGING INC.
    Inventors: Guo-Zhen Wang, Hui-Hsuan Chen
  • Publication number: 20250022357
    Abstract: A smoke detector comprises a light source, an optical sensor, a first, and a second processing circuit. The optical sensor senses optical data and comprises; a first oscillator, generating a first oscillating signal; and a second oscillator, generating a second oscillating signal. The first processing circuit generates a first command to instruct the first oscillator to oscillate for a first expected oscillating time, and acquires a first real oscillating time, wherein the first processing circuit further computes a time relation between the first expected oscillating time and the first real oscillating time. The first processing circuit generates a second command to instruct the second oscillator to oscillate for a second expected oscillating time according to the time relation. The second processing circuit controls the smoke detector to generate a first alarm according to the time relation. The optical sensor can also be applied to other electronic devices.
    Type: Application
    Filed: July 12, 2023
    Publication date: January 16, 2025
    Applicant: PixArt Imaging Inc.
    Inventors: Ching-Kun Chen, Guo-Zhen Wang
  • Patent number: 12189029
    Abstract: An optical sensing system, comprising: a first light source, configured to emit first light to a first position; a second light source, configured to emit second light to a second position, wherein the first position is above the second position, wherein the first light is not emitted to the second position and the second light is not emitted to the first position; and an optical sensor, configured to sense optical data generated based on at least one of the first light source and the second light source; wherein a detecting region of the optical sensor comprises an upper half region and a lower half region, wherein a size of the upper half region is adjustable.
    Type: Grant
    Filed: March 22, 2024
    Date of Patent: January 7, 2025
    Assignee: PixArt Imaging Inc.
    Inventors: Guo-Zhen Wang, Tse-En Peng