Patents Assigned to Pixart Imaging, Inc.
  • CURSOR CONTROL METHOD AND CURSOR CONTROL DEVICE WHICH CAN IMPROVE CURSOR MOVEMENT RANGE AND ACCURACY
    Publication number: 20230140548
    Abstract: A cursor control method, for moving a cursor on a first displayed image and a second displayed image, comprising: (a) receiving a first displacement value when the cursor is within a first region of the first displayed image and receiving a second displacement value when the cursor is within a second region of the first displayed image; (b) moving the cursor with a first moving value on the first displayed image, which is obtained from the first displacement value and a first ratio; and (d) moving the cursor with a second moving value on a second displayed image, which is obtained from the second displacement value and a second ratio; wherein the first ratio is different from the second ratio; wherein the second displayed image is a zoom out and partial image of the first displayed image. By this way, the cursor movement accuracy can be increased.
    Type: Application
    Filed: July 11, 2022
    Publication date: May 4, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Chao-Chien Huang, Yi-Chung Chen
  • FAR INFRARED SENSOR APPARATUS HAVING MULTIPLE SENSING ELEMENT ARRAYS INSIDE SINGLE PACKAGE
    Publication number: 20230133741
    Abstract: A far infrared sensor package includes a package body and a plurality of far infrared sensor array integrated circuits. The plurality of far infrared sensor array integrated circuits are disposed on a same plane and inside the package body. Each of the far infrared sensor array integrated circuits includes a far infrared sensing element array of a same size.
    Type: Application
    Filed: December 29, 2022
    Publication date: May 4, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Chih-Ming Sun, Sen-Huang Huang
  • PET BREEDING TOOL
    Publication number: 20230134736
    Abstract: A pet breeding tool includes a roller, an optical sensor and an operation processor. The roller is adapted to rotate relative to an axle direction. The optical sensor is adapted to emit a detection beam toward the roller and receive a reflection beam from the roller. The operation processor is electrically connected to the optical sensor. The operation processor is adapted to analyze the reflection beam for acquiring rotation data of the roller, and further transform random variation of the rotation data into behavior of the roller for immediately adjusting output information relevant to the foresaid behavior.
    Type: Application
    Filed: November 4, 2021
    Publication date: May 4, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Chung-Ting Yang, Kai-Ho Tsai
  • Optical sensor cancelling image flicker
    Patent number: 11632502
    Abstract: There is provided an optical sensor that acquires a first image frame corresponding to a first flicker period and acquires a second image frame corresponding to a second flicker period. The optical sensor adds the first image frame to the second image frame to generate a sum of image frames for the motion detection. Or, the optical sensor respectively adds pixel data of every two pixels in neighboring rows of the first image frame and the second image frame to generate a low-resolution image frame for the motion detection.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: April 18, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: En-Feng Hsu
  • JOYSTICK WITH PREFERRED RECOVERING FUNCTION
    Publication number: 20230103383
    Abstract: A joystick includes a stick head, an actuating component, a substrate, a bearing base, a resilient recovering component and a constraining component. The actuating component has a first end and a second end opposite to each other. The first end is connected to the stick head, and an identification feature is disposed on the second end. The substrate has a detection module used to detect the identification feature and determine motion of the stick head. The bearing base is disposed on the substrate. An opening portion of the bearing base aligns with the detection module and the actuating component. The resilient recovering component is disposed between the substrate and the bearing base. The constraining component is disposed on the resilient recovering component and movably disposed inside the opening portion, and used to abut against the actuating component in a detachable manner.
    Type: Application
    Filed: June 20, 2022
    Publication date: April 6, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Hung-Yu Lai, Yong-Nong Huang, Hui-Hsuan Chen, Jia-Hong Huang
  • OBJECT DETERMINING SYSTEM AND AUTO CLEAN MACHINE USING THE OBJECT DETERMINING SYSTEM
    Publication number: 20230109201
    Abstract: One object determining system comprising: 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 a type of the object according to variations of the distances.
    Type: Application
    Filed: December 6, 2022
    Publication date: April 6, 2023
    Applicant: PixArt Imaging Inc.
    Inventor: Guo-Zhen Wang
  • Constant current LED driver, current control circuit and programmable current source
    Patent number: 11622428
    Abstract: A constant current LED driver, for controlling a current flowing through a LED, comprising: an adjusting circuit, configured to generate a first current and a first adjusting signal; a feedback circuit, controlled by an output signal, to generate a feedback voltage according to the first current; an operation amplifier, configured to generate the output signal according to the LED voltage and the feedback voltage; and an edge adjusting circuit, configured to adjust a first type of edges or a second type of edges of the first adjusting signal to generate a second adjusting signal, wherein the LED is controlled by the second adjusting signal. The above-mentioned constant current LED driver can be used as a current control circuit for controlling a current flowing through a target device.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: April 4, 2023
    Assignee: PixArt Imaging Inc.
    Inventor: Kok Siang Tan
  • Image sensor comprising BJT pixel circuit and image sensing system applying the image sensor
    Patent number: 11622176
    Abstract: An image sensor comprising a BJT pixel circuit, a biasing circuit and a comparator. The BJT pixel circuit comprises a BJT; a charging selection circuit, configured to control a first storage capacitor to be charged in a first reset time and to control a second storage capacitor to be charged to a second reset time; a discharging selection circuit, configured to control the first storage capacitor to be discharged by the BJT in a first exposure time to generate a first output voltage, and to control the second storage capacitor to be discharged by the BJT in a second exposure time to generate a second output voltage; a biasing circuit, configured to provide voltage decreasing and voltage increasing to the second output voltage to generated adjusted images; and a comparator, configured to compare the first output voltage and the adjusted voltages.
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: April 4, 2023
    Assignee: PixArt Imaging Inc.
    Inventor: Wooi Kip Lim
  • Image sensor apparatus and corresponding method capable of automatically adjusting signal timing margins in response to different circuit routing designs
    Patent number: 11622171
    Abstract: A method of an image sensor apparatus to be externally coupled to an external circuit through a circuit routing design includes: generating and outputting the clock signal and sensor data signals; and compensating an unbalance of the circuit routing design by automatically determining resultant delay amounts for the sensor data signals, applying a preliminary delay amount into the clock signal and applying the resultant delay amounts into the sensor data signals to generate and output delayed clock signal and delayed sensor data signals to the external circuit through the circuit routing design.
    Type: Grant
    Filed: August 16, 2021
    Date of Patent: April 4, 2023
    Assignee: PixArt Imaging Inc.
    Inventor: Hsin-Chi Cheng
  • Image sensing scheme capable of saving more power as well as avoiding image lost and also simplifying complex image recursive calculation
    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
  • Joystick with light emitter and optical sensor within internal chamber
    Patent number: 11614805
    Abstract: A joystick includes a first structural component, a second structural component, a light emitter, an optical sensor and a processor. The second structural component is assembled with the first structural component to form a chamber. The light emitter is disposed inside the chamber for illuminating one surface of the second structural component. The optical sensor is disposed inside the chamber for capturing the illuminated surface of the second structural component. The processor is electrically connected to the optical sensor and adapted to analyze an intensity distribution of the illuminated surface for determining if the joystick is obliquely pressed or laterally shifted in a relative manner.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: March 28, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Yi-Chung Chen, Chu-Hung Nien
  • Camera having two exposure modes and imaging system using the same
    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
  • Electronic system with eye protection in response to user distance
    Patent number: 11616906
    Abstract: An electronic system including a display device, 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 the 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 1, 2021
    Date of Patent: March 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Han-Chang Lin, Guo-Zhen Wang, Nien-Tse Chen
  • Smoke detector
    Patent number: 11615684
    Abstract: There is provided a smoke detector including a light source, a reflective surface, a light sensor and a processor. The light sensor receives reflected light when the light source emits light toward the reflective surface, and generates a reference detection signal when there is no smoke. The processor receives the detection signal from the light sensor, and automatically selects a set of predetermined condition thresholds according to a profile of the detection signal to be compared with the detection signal thereby determining whether to generate an alarm according to the comparison result.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: March 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Cheng-Nan Tsai, Guo-Zhen Wang, Ching-Kun Chen, Yen-Chang Chu, Chih-Ming Sun
  • Electrostatic actuator
    Patent number: 11616455
    Abstract: An actuator is configured to include a first substrate that has a first conductive surface, which may be or include a first conductive electrode layer. The actuator also includes a second substrate that has a second conductive surface, which may be or include a second conductive electrode layer. The first and second conductive surfaces face toward each other across a compression space between the first and second substrates. A group of elastic support nodules span the compression space and separate the first and second conductive surfaces. The compression space is less than fully filled with solid elastic material and is configured to be compressed by relative movement of the first and second conductive surfaces toward each other in response to a voltage difference between the first and second conductive surfaces.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: March 28, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Ville Mäkinen, Roberto Tejera-Garcia, Aki Salminen
  • Optical encoder with interpolation circuit
    Patent number: 11616503
    Abstract: There is provided an optical encoder including a phase shifter circuit, two multiplexers, two digital circuits and four comparators. The phase shifter circuit receives signals from an amplifier and outputs multiple phase shifted signals. Each of the two multiplexers receives a half of the multiple phase shifted signals and outputs two pairs of phase shifted signals, each pair having 180 degrees phase difference, respectively to two comparators connected thereto. Each of the two digital circuits controls the corresponding multiplexer to select the two pairs of phase shifted signals from the half of the multiple phase shifted signals.
    Type: Grant
    Filed: May 12, 2022
    Date of Patent: March 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Swee-Lin Thor, Gim-Eng Chew
  • Gesture recognition system employing thermal sensor and image sensor
    Patent number: 11615642
    Abstract: There is provided a recognition system adaptable to a portable device or a wearable device. The recognition system senses a body heat using a thermal sensor, and performs functions such as the living body recognition, image denoising and body temperature prompting according to detected results.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: March 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Nien-Tse Chen, Yi-Hsien Ko, Yen-Min Chang
  • Sensor circuit having identical capacitors to improve sensing efficiency of pixels and operating method thereof
    Patent number: 11614359
    Abstract: There is provided a circuit to improve the sensing efficiency of pixels that uses the induction effect of a capacitor to duplicate a voltage deviation caused by additional electrons and uses a circuit to cancel out the voltage deviation during reading pixel data thereby improving the sensing efficiency.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: March 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Kuan Tang, Yi-Cheng Chiu, Chia-Chi Kuo, Jui-Te Chiu, Han-Chi Liu
  • Optical sensor apparatus and method capable of accurately determining motion/rotation of object having long shape and/or flexible form
    Patent number: 11609642
    Abstract: A method of an optical sensor apparatus which is to be used with a controlling device arranged for controlling an object having a long shape and flexible form of a material, includes: using a light emitting circuit to generate and output a light ray to a surface of a portion of the object; sensing the light ray reflected from the surface for multiple times to generate multiple images; detecting at least one motion image in the generated multiple images; and, determining a motion, an offset, or a rotation angle of the object, which is controlled by the thread controlling device, according to the detected at least one motion image.
    Type: Grant
    Filed: July 12, 2022
    Date of Patent: March 21, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Feng-Chi Liu, Ching-Lin Chung
  • Optical processing apparatus and operating method of watch
    Patent number: 11609643
    Abstract: An optical processing apparatus and a light source luminance adjustment method adapted to detect a rotational displacement and a pressing state are provided. The optical processing apparatus includes a light source unit, a processing unit, and an image sensing unit, wherein the processing unit is electrically connected to the light source unit and the image sensing unit. The light source unit provides a beam of light. The processing unit defines a frame rate, defines a plurality of time instants within a time interval, and sets the light source unit to a luminance value at each of the time instants. A length of the time interval is shorter than the reciprocal of the frame rate. The luminance values are different and are within a range. The image sensing unit captures an image by an exposure time length at each of the time instants, wherein the exposure time lengths are the same.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: March 21, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Chung-Ting Yang, Ching-Lin Chung