Patents Assigned to Pixart Imaging, Inc.
  • Publication number: 20230218207
    Abstract: A substance concentration measuring device, for measuring a substance concentration for a target substance in blood of a subject, comprising: a processing circuit; and a plurality of electrodes. At least two of the electrodes touches the subject when the subject wears the substance concentration measuring device, thereby the processing circuit can acquire at least one physiological signal caused by an eye of the subject. The processing circuit computes a voltage value or a voltage difference of the physiological signal, and computes the substance concentration according to the voltage value or the voltage difference. A human condition monitoring system comprising the substance concentration measuring device is also disclosed.
    Type: Application
    Filed: January 13, 2022
    Publication date: July 13, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Chih-Hao Wang, Chien-Yi Kao, Yang-Ming Chou, Shih-Jen Lu, Hsin-Yi Lin
  • Publication number: 20230224578
    Abstract: An image sensing system control method comprising: (a) receiving a first polling from the control circuit by the image sensor at a first polling time; (b) triggering a first dummy read at a first dummy read time after the first polling time, to compute output motion delta occurs between the first polling time and the first dummy read time according to frames sensed by the image sensor between the first polling time and the first dummy read time; (c) receiving a second polling from the control circuit by the image sensor at a second polling time after the first dummy read time; and (d) outputting the output motion delta to the control circuit by the image sensor in a predetermined time range of the second polling time.
    Type: Application
    Filed: January 12, 2022
    Publication date: July 13, 2023
    Applicant: PixArt Imaging Inc.
    Inventor: Zi Hao TAN
  • Publication number: 20230221427
    Abstract: A navigation device applied to a wireless identification tag includes a movable signal transceiver and an operation processor. The movable signal transceiver is adapted to transmit a detection signal and receive an actuation signal relevant to the detection signal. The operation processor is electrically connected to the movable signal transceiver. The operation processor is adapted to analyze the actuation signal to acquire relative position between the movable signal transceiver and the wireless identification tag, and generate a motion parameter in accordance with the relative position for moving the movable signal transceiver.
    Type: Application
    Filed: January 13, 2022
    Publication date: July 13, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Shih-Feng Chen, Han-Lin Chiang, Ning Shyu
  • Publication number: 20230221174
    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: Application
    Filed: January 10, 2022
    Publication date: July 13, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Sai Mun LEE, Chee Pin T'NG
  • Publication number: 20230223945
    Abstract: An ADC device includes a DAC circuit, a comparator circuit, a SAR decision circuit, an oscillator circuit having a delay unit, and a processing circuit. The oscillator circuit is used for generating the clock signal according to a reset signal and a delay of the delay unit. The processing circuit is used for sequentially generating multiple bit conversion signals associated with multiple different bits of the decision signal, for generating at least one guard signal which follows the multiple bit conversion signals, and then for comparing the at least one guard signal with the reset signal to adjust the delay generated by the delay unit of the oscillator circuit.
    Type: Application
    Filed: January 13, 2022
    Publication date: July 13, 2023
    Applicant: PixArt Imaging Inc.
    Inventor: Shiue-Shin Liu
  • Patent number: 11698457
    Abstract: An object detecting system comprising: a first distance measuring device, configured to measure a first distance between a first part of an object and the first distance measuring device; a second distance measuring device, configured to measure a second distance between a second part of the object and the second distance measuring device; a uniform light source, configured to emit uniform light to the object; an optical sensor, configured to sense optical data of the object generated based on the uniform light; and a control circuit, configured to calculate a location of the object according to the first distance, the second distance and the optical data.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: July 11, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Guo-Zhen Wang, Tse-En Peng
  • Publication number: 20230215020
    Abstract: A speed detecting method, applied to a speed detecting apparatus comprising a distance computing apparatus and a speed computing apparatus, the speed detecting method comprising: (a) computing an object to be detected distance between the speed detecting apparatus and an objected to be detected via the distance computing apparatus; and (b) computing a moving speed of the object to be detected according to the object to be detected distance via the speed computing apparatus.
    Type: Application
    Filed: March 10, 2023
    Publication date: July 6, 2023
    Applicant: PixArt Imaging Inc.
    Inventor: Hung-Ching Lai
  • Patent number: 11690490
    Abstract: An auto clean machine comprising: a height computing device; and an obstacle determining device. The height computing device is turned on to compute a height or an overhang height of an obstacle when the obstacle determining device determines the obstacle exists in a predetermined region of the auto clean machine. The height computing device does not compute the height and the overhang height when the obstacle determining device does not determine the obstacle exists in the predetermined region.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: July 4, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Guo-Zhen Wang, Ting-Yang Chang
  • Patent number: 11691264
    Abstract: There is provided a mobile robot that performs the obstacle avoidance, positioning and object recognition according to image frames captured by the same optical sensor. The mobile robot includes an optical sensor, a light emitting diode, a laser diode and a processor. The processor identifies an obstacle and a distance thereof according to image frames captured by the optical sensor when the laser diode is emitting light. The processor further performs the positioning and object recognition according to image frames captured by the optical sensor when the light emitting diode is emitting light.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: July 4, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Guo-Zhen Wang, Hui-Hsuan Chen
  • Patent number: 11694365
    Abstract: A method of an optical sensor device used for detecting a color of a specific surface of an object includes: providing a sensor array having a plurality of pixel units each for receiving light reflected from the specific surface to generate a sensed pixel value; using the sensor array to generate a specific image formed by a plurality of sensed pixel values; determining whether the specific image is similar to a first solid color image corresponding to a first color according to the plurality of sensed pixel values of the specific image; and determining to execute a distance detection operation to calculate a specific distance from the optical sensor device to the specific surface according to a color saturation value of the first color in the specific image when it is determined that the specific image is similar to the first solid color image corresponding to the first color.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: July 4, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Tsung-Hsueh Lee, Shu-Sian Yang
  • Patent number: 11693116
    Abstract: There is provided a distance measurement device including a light source, a light detector, a time control circuit and a processor. In first measurement, the time control circuit controls the light source to illuminate at a low modulation frequency, and the processor calculates a rough flying time according to a first detection signal of the light detector to determine an operating phase zone and a delay time. In second measurement, the time control circuit controls the light source to illuminate at a high modulation frequency and causes a light driving signal of the light source and a detecting control signal of the light detector to have a difference of the delay time, and the processor calculates a fine flying time according to a second detection signal of the light detector.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: July 4, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Yueh-Lin Chung, Tso-Sheng Tsai
  • 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: 11686623
    Abstract: An electronic device includes an outer case, a circuit substrate, a thermopile sensor chip, a filter structure, and a waterproof structure. The outer case has an opening. The circuit substrate is disposed inside the outer case. The thermopile sensor chip is disposed on the circuit substrate. The filter structure is disposed above the thermopile sensor chip. The waterproof structure is surroundingly connected between the filter structure and the outer case, wherein the waterproof structure has a through hole for exposing the filter structure and communicated with the opening of the outer case.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: June 27, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Ming-Han Tsai, Chih-Ming Sun, Jian-Cheng Liao
  • Patent number: 11687187
    Abstract: A lighting touchpad is provided, which includes a substrate module, a plurality of sensing electrodes, a plurality of driving electrodes, a plurality of light emitting diode (LED) chips mounted on the substrate module, and a controller. The driving electrodes and the sensing electrodes are formed on the substrate module and are respectively located at different height positions. The driving electrodes define a distribution space that extends along a normal direction of the substrate module. The LED dies are arranged in the distribution space. The controller is electrically coupled to the sensing electrodes, the driving electrodes, and the LED dies through the substrate module. When a coupling capacity is generated between a conductor and at least one of the sensing electrodes, the controller is configured to drive at least one of the LED dies adjacent to the at least one of the sensing electrodes to emit light.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: June 27, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: Chi-Chieh Liao
  • Patent number: 11688739
    Abstract: There is provided a logic circuit capable of preventing latch-up. The conducting of a parasitic SCR is prevented by doping an additional N+ active region in the N well region of a PMOS transistor and doping an additional P+ active region in the P well region of an NMOS transistor so as to prevent the occurrence of latch-up.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: June 27, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Yung-Ju Wen, Han-Chi Liu, Hsin-You Ko
  • Publication number: 20230196717
    Abstract: A connected component analysis (CCA) method, which can use labels repeatedly, comprising: defining a label pattern comprising a label and a plurality of neighboring labels; setting a center label of a current pixel of a target binary image according to a binary value of the current pixel and the neighboring pixels; setting at least two of the neighboring labels according to whether the current pixel is in any one of a first row, a first column and a last column; and recording the center label to a label buffer. Labels for marking pixels of the target binary image are first center labels, and then are second center labels, and are the first center labels again after the labels are the second center labels.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 22, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Joon Chok LEE, Zi Hao TAN
  • Publication number: 20230196757
    Abstract: An electronic apparatus, comprising: an optical sensor, comprising a kind determining region and an element analyzing region, wherein the optical sensor acquires first optical data via the kind determining region, and acquires second optical data via the element analyzing region, wherein the kind determining region and the element analyzing region are different regions of the optical sensor; a kind determining component, configured to determine an object kind of the object according to the first optical data; and an element analyzing component, configured to analyze element of the object according to the second optical data.
    Type: Application
    Filed: January 16, 2023
    Publication date: June 22, 2023
    Applicant: PixArt Imaging Inc.
    Inventor: Guo-Zhen Wang
  • Publication number: 20230194369
    Abstract: A force sensing method, applied to a force sensing system comprising a plurality of force sensors and a touch sensing surface, comprising: (a) determining a first location of a first object on the touch sensing surface; (b) defining a first force sensing region according to the first location; and (c) computing a first system sensing force which the first object causes to the touch sensing surface according to the first location, and according to at least one sensor sensing force of a first part of the force sensors corresponding to the first force sensing region. The present invention also discloses a force sensing system which uses the above-mentioned force sensing method, and an efficient force sensor calibration method. Noises can be reduced and power consumption can be decreased, since only sensor sensing forces of force sensors near the object are used for computing the system sensing force.
    Type: Application
    Filed: December 20, 2021
    Publication date: June 22, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Ming-Hung Tsai, Chun-Yang Chen, Yen-Po Chen
  • Patent number: 11683608
    Abstract: An image sensor device includes a sensor array and a processing circuit. The sensor array includes a plurality of pixel units each including a photodiode unit and a storage capacitor. The sensor array generates an image of a specific frame, and the photodiode unit is illuminated by a light ray to generate a photodiode current which is stored in the storage capacitor when the image sensor device performs an exposure operation. The processing circuit generates a reference current according to photodiode current(s) of photodiode unit(s) of pixel unit(s) before the exposure operation arranged for the specific frame starts, and predicts a length of an exposure time interval of the exposure operation for the specific frame based on the generated reference current.
    Type: Grant
    Filed: July 1, 2021
    Date of Patent: June 20, 2023
    Assignee: PixArt Imaging Inc.
    Inventor: Wooi Kip Lim
  • Patent number: 11681887
    Abstract: A color bar code comprising a code block is disclosed. The code block comprises: a header region, comprising a specific color; and a code region, comprising at least two code color bars with different color kinds, wherein a color sequence of the code color bars indicates a code. The code color bars form concentric layers surrounding the header region. Such color bar code can comprise more information and the contained therein is more easily to be acquired. A code determining system which can determine the code in the color bar code is also disclosed.
    Type: Grant
    Filed: April 8, 2022
    Date of Patent: June 20, 2023
    Assignee: PixArt Imaging Inc.
    Inventor: Shu-Sian Yang