Patents Assigned to Pixart Imaging, Inc.
  • Optical mouse and light pipe thereof
    Patent number: 11774771
    Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light pipe does not have any protrusion extending therefrom and attached to a front surface of the light source.
    Type: Grant
    Filed: May 12, 2022
    Date of Patent: October 3, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Hun-Kwang Lee, Sai-Mun Lee, Priscilla Tze-Wei Goh, Lye-Pin Chu
  • Motion detecting system having multiple sensors
    Patent number: 11775076
    Abstract: The present invention provides a motion detecting system, which includes a light source module, a plurality of image sensors and a control unit. The light source module illuminates at least one object. The image sensors respectively detect the object under the light emitted by the light source module to generate a plurality of detection results. The control unit is coupled to the image sensors, and generates a control command according to the detection results.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: October 3, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Ting-Yang Chang, Yen-Min Chang, Nien-Tse Chen
  • ROBOT CLEANER AND ROBOT CLEANER CONTROL METHOD
    Publication number: 20230301479
    Abstract: A robot cleaner comprises a first light source, an optical sensor, a processing circuit and a second light source. The first light source emits first light. The optical sensor senses first optical data generated according to the first light. The processing circuit computes a height or an overhang height of an obstacle based on the first optical data. The second light source emits second light. The optical sensor senses second optical data generated according to the second light. The processing circuit determines whether the obstacle exists in the predetermined region or not based on the second optical data.
    Type: Application
    Filed: May 16, 2023
    Publication date: September 28, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Guo-Zhen Wang, Ting-Yang Chang
  • AUTOMATIC CLEANER
    Publication number: 20230304942
    Abstract: The present invention discloses an automatic cleaner for cleaning a surface. The automatic cleaner comprises: a light emitting device, configured to emit first light, wherein a first angle exists between a first emitting direction of the first light and the surface when the automatic cleaner is located on the surface, wherein the first angle is larger than 0° and smaller than 90°; an optical sensor, configured to detect first optical data generated based on the first light; and a processing circuit, configured to determine if the liquid or the colloid exists in a predetermined range of the automatic cleaner based on the first optical data. The processing circuit further determines a location of the automatic cleaner on the surface according to navigation optical data.
    Type: Application
    Filed: May 28, 2023
    Publication date: September 28, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Gue-Zren Wang, Hung-Ching Lai
  • METHOD AND STRUCTURE FOR ALIGNMENT OF LENS TO OPTICAL PRODUCT AT PCBA LEVEL
    Publication number: 20230309216
    Abstract: An optical package includes: a Printed Circuit Board including a plurality of cut-out sections; a lens, including a first plurality of protrusions corresponding respectively to the plurality of cut-out sections, wherein when the lens is placed under the PCB, the protrusions will pass through the cut-out sections; and a sensor for attaching on to the lens and the PCB. The first plurality of protrusions has a shape from the group including: snap features, guide posts and guide posts with tight-fit ribs.
    Type: Application
    Filed: March 22, 2022
    Publication date: September 28, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Wan Piang LIM, Sai Mun LEE
  • OPTICAL SENSOR DEVICES AND METHOD CAPABLE OF CALIBRATING CLOCK SIGNAL BY ITSELF WHEN RECEIVING ONE OR MORE TRANSMISSIONS OF SPECIFIC COMMUNICATION SIGNAL FROM MONITORING SYSTEM
    Publication number: 20230299937
    Abstract: A method of an optical sensor device includes: using an oscillator circuit to generate a clock signal; and generating monitoring frames according to the clock signal; wherein the clock signal is calibrated in response to at least one of: a first communication signal, transmitted for multiple times from a monitoring system externally coupled to the optical sensor device, is received by the optical sensor device; a data length of the first communication signal transmitted for only one time from the monitoring system externally coupled to the optical sensor device; and, a data length of an encoded data portion of the first communication signal transmitted for only one time.
    Type: Application
    Filed: March 15, 2022
    Publication date: September 21, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Chih-Huan Wu, Wen-Han Yao, Ren-Hau Gu
  • IMAGE SENSING SYSTEM, AND AUTO CLEAN MACHINE
    Publication number: 20230296774
    Abstract: An image sensing system, comprising: a distance determining device, configured to determine whether a distance between an object and an electronic device comprising the image sensing system is larger than a distance threshold or not; and an image sensor, comprising at least one image sensing unit, wherein the image sensor senses images with a first frame rate when the distance is smaller than the distance threshold and senses the images with a second frame rate when the distance is larger than the distance threshold, wherein the first frame rate is different from the second frame rate.
    Type: Application
    Filed: May 24, 2023
    Publication date: September 21, 2023
    Applicant: PixArt Imaging Inc.
    Inventor: Guo-Zhen Wang
  • OPTICAL SENSING SYSTEM
    Publication number: 20230296770
    Abstract: An optical sensing system, comprising: a first light source for emitting first light to a first part of an object; a second light source for emitting second light to a second part of the object, wherein the first part is above the second part, wherein the first light is not emitted to the second part and the second light is not emitted to the first part; a uniform light source, for emitting uniform light to the object, wherein the first light source is below the uniform light source and the second light source is above the uniform light source; and an optical sensor, wherein a detecting region of the optical sensor comprises an adjustable upper half region and a lower half region. Such optical sensing system can reduce the effect that the arm causes for hand location calculating.
    Type: Application
    Filed: May 24, 2023
    Publication date: September 21, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Guo-Zhen Wang, Tse-En Peng
  • Earphone with force sensor
    Patent number: 11761830
    Abstract: There is provided a force sensor including a substrate and a polymer material layer. The substrate has a circuit layout that includes a first electrode and a second electrode configured to form a capacitor therebetween. The polymer material layer covers at least on a space between the first electrode and the second electrode, and is used to change capacitance of the capacitor while being pressed. The force sensor is arranged inside a stem of an earphone for detecting the user input.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: September 19, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Yen-Po Chen, Hao-Che Liu, Yen-Chang Chu, Chih-Ming Sun
  • Image sensor employing avalanche diode and shared output circuit
    Patent number: 11765482
    Abstract: There is provided an image sensor employing an avalanche diode. The image sensor includes a plurality of pixel circuits arranged in a matrix, a plurality of pulling circuits, a plurality of output circuits and a global current source circuit. Each of the plurality of pixel circuits includes a single photon avalanche diode and a P-type or N-type select switch transistor. Each of the plurality of pulling circuits is arranged corresponding to one pixel circuit column. The global current source circuit is used to form a current mirror with each of the plurality of pulling circuits. Each of the plurality of output circuits is shared by at least two pixel circuits.
    Type: Grant
    Filed: November 8, 2022
    Date of Patent: September 19, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Sen-Huang Huang, Tso-Sheng Tsai
  • Auto detection system based on thermal signals
    Patent number: 11754293
    Abstract: There is provided an auto detection system including a thermal detection device and a host. The host controls an indication device to indicate a prompt message or detection results according to a slope variation of voltage values or 2D distribution of temperature values detected by the thermal detection device, wherein the voltage values include the detected voltage of a single pixel or the sum of detected voltages of multiple pixels of a thermal sensor.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: September 12, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Chih-Ming Sun, Ming-Han Tsai, Chiung-Wen Lin, Po-Wei Yu, Wei-Ming Wang, Sen-Huang Huang
  • Mobile robot performing multiple detections using image frames of same optical sensor
    Patent number: 11752635
    Abstract: There is provided a mobile robot that controls an exposure time of an optical sensor during a time interval during which images of a gap between tiles are captured. At an end of the time interval that an image of a gap between tiles is captured, the exposure time of the optical sensor is adjust to the exposure time being used right before the time interval to avoid high brightness of the captured image while the image of a gap between tiles is suddenly disappeared from a field of view of the optical sensor.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: September 12, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: Guo-Zhen Wang
  • Portable electronic device and operation method
    Patent number: 11756331
    Abstract: A portable electronic device is provided. The portable electronic device includes a body, an image sensor and a main system. The image sensor continually captures a first image outside the body, detects at least one motion of a user according to the first image, and generates a control signal related to the motion. The main system receives the control signal from the image sensor and executes a function or a service corresponding to the motion according to the control signal.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: September 12, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Guo-Zhen Wang, Han-Chang Lin
  • Opto-mechanical structure design of thin LGA package with glass cover and a thickness of an aperture ceiling is 0.20MM
    Patent number: 11754440
    Abstract: The invention provides an optical sensor package. The optical sensor package includes: a printed circuit board (PCB); a sensor disposed on the PCB; a glass cover disposed directly on the sensor; and an aperture disposed on the PCB comprised of a solid perimeter surrounding the sensor and a ceiling having a cut-out section above the glass cover. The cut-out section of the ceiling is smaller in area than the glass cover. The part of the aperture ceiling which overhangs the glass cover is thicker than the remaining part. The optical sensor package further includes an LED die disposed on the PCB, and Kapton tape placed over the ceiling of the aperture.
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: September 12, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Sai Mun Lee, Chee Pin T'ng
  • Sensing element having pixels exposed by aperture increasing along predetermined direction
    Patent number: 11747140
    Abstract: A sensing element includes a plurality of sensing pixel areas arranged in matrix, wherein each of the plurality of sensing pixel areas includes a first pixel, a second pixel, a first shielding layer, a second shielding layer and at least one micro lens. The second pixel is adjacent to the first pixel in a predetermined direction. The first shielding layer is disposed on the first pixel and has a first opening, wherein an aperture of the first opening increases along the predetermined direction from a center of the first pixel. The second shielding layer is disposed on the second pixel and has a second opening, wherein a shape of the second opening is mirror symmetrical with that of the first opening in the predetermined direction. The at least one micro lens is disposed on the first shielding layer and the second shielding layer.
    Type: Grant
    Filed: June 18, 2021
    Date of Patent: September 5, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: En-Feng Hsu, Chia-Yu Liu
  • Optical sensor for odometry tracking to determine trajectory of a wheel
    Patent number: 11748893
    Abstract: An optical sensor system mounted in a wheel arch of a car for determining trajectory of the car includes: a first optical sensor mounted in the wheel arch above a wheel and located behind a first clear casing that does not touch the wheel; and a second optical sensor mounted in the wheel arch on one side of the wheel and located behind a second clear casing that does not touch the wheel. The first optical sensor and second optical sensor perform a plurality of counts corresponding to respectively capturing a plurality of images of the wheel. The captured images are compared with a reference image to determine a 2D displacement of the wheel from its original position. The trajectory of the car is determined by calculating a turning degree of the wheel according to a trigonometric manipulation of the measured 2D displacement.
    Type: Grant
    Filed: October 24, 2021
    Date of Patent: September 5, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Keen-Hun Leong, Boon-How Kok, Dennis Dominic Donald
  • Robot and movable device capable of identifying surface type
    Patent number: 11744424
    Abstract: There is provided a robot including a first light source, a second light source, an image sensor and a processor. The processor is used to calculate an image quality of an image frame captured by the image sensor when the second light source is being turned on. The processor then determines whether to switch the second light source back to the first light source according to the image quality to accordingly identify the material of an operation surface.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: September 5, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Chung-Ting Yang, Kai-Ho Tsai
  • Virtual reality system with high security
    Patent number: 11748464
    Abstract: A virtual reality (VR) system including a VR box, a system server and a wearable accessary is provided. The VR box detects a biometric characteristic to identify a user ID according to the biometric characteristic, and outputs an ID signal associated with the identified user ID. The system server receives the ID signal from the VR box, and transmits video stream to the VR box to be shown thereon. The wearable accessary detects movement of the wearable accessary after receiving the ID signal from the VR box, and sends a control signal to the system server to change image content in the video stream according to the detected movement of the wearable accessary.
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: September 5, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: Yen-Min Chang
  • Capacitive touch control system with frequency booster
    Patent number: 11747939
    Abstract: There is provided a capacitive touch control system adapted to detect low frequency signals, including a touch panel and an analog front end. The analog front end includes a frequency booster, which boosts a low frequency signal outputted by the touch panel using a variable reference frequency corresponding different function symbols of the low frequency signal such that resistance of a resistor of an amplifier in the analog front end needs not to be increased thereby reducing the manufacturing cost and a leakage voltage drop on the resistor.
    Type: Grant
    Filed: May 9, 2022
    Date of Patent: September 5, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: Sung-Han Wu
  • Inductor circuit and wireless communication device having inductor circuit integrated on single chip die to save more circuit costs
    Patent number: 11750247
    Abstract: An inductor circuit includes a receiver inductive circuit, a transmitter inductive circuit, and an antenna inductive circuit which are implemented on a single chip die; the receiver inductive circuit is disposed on a specific ring of a specific plane to form a ring shape; the transmitter inductive circuit and the antenna inductive circuit are disposed inside the specific ring and surrounded by the specific ring of the specific plane; and, a circuit area, occupied by the transmitter inductive circuit, inside the specific ring and on the specific plane, is larger than a circuit area occupied by the receiver inductive circuit and by the antenna inductive circuit.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: September 5, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Mu-Tsung Lai, Tung-Ying Chiang, Chien-An Hou, Chia-Pei Chen