Patents Assigned to Pixart Imaging, Inc.
  • Publication number: 20230408299
    Abstract: A flexible capacitive touch sensing device comprising a first, a second sensing region and a capacitance detection circuit. Each of the first, second sensing region comprises: flexible material; and electrodes, in or on the flexible material. Capacitance sensed by the capacitance detection circuit is used for detecting if an object causes capacitance variation to the first sensing region and the second sensing region. The first sensing region comprises a first side region with a first side which is adjacent to a second side of the second sensing region Shapes of the electrodes are changeable after provided on the flexible material. The electrodes are overlapped in normal directions of the first side region and the second side region. An angle which is not 0 degree exists between the electrodes which are overlapped. Such flexible capacitive touch sensing device can be applied to generate a HOD device with different sizes.
    Type: Application
    Filed: June 21, 2022
    Publication date: December 21, 2023
    Applicant: PixArt Imaging Inc.
    Inventor: Ching-Shun Chen
  • Patent number: 11847857
    Abstract: A vehicle device setting method including: capturing, by an image sensing unit, a first image frame; recognizing a user ID according to the first image frame; showing ID information of the recognized user ID on a screen or by a speaker; capturing a second image frame; generating a confirm signal when a first user expression is recognized by calculating an expression feature in the second image frame and comparing the recognized expression feature with stored expression data associated with a predetermined user expression to confirm whether the recognized user ID is correct or not according to the second image frame captured after the ID information is shown; controlling an electronic device according to the confirm signal; and entering a data update mode instructed by the user and updating setting information of the electronic device by current electronic device setting according to a saving signal generated by confirming a second user expression in a third image frame captured after the user ID is confirmed
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: December 19, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Liang-Chi Chiu, Yu-Han Chen, Ming-Tsan Kao
  • Patent number: 11849236
    Abstract: The present disclosure provides a time delay integration (TDI) sensor using a rolling shutter. The TDI sensor includes multiple pixel columns. Each pixel column includes multiple pixels arranged in an along-track direction, wherein two adjacent pixels or two adjacent pixel groups in every pixel column have a separation space therebetween. The separation space is equal to a pixel height multiplied by a time ratio of a line time difference of the rolling shutter and a frame period, or equal to a summation of at least one pixel height and a multiplication of the pixel height by the time ratio of the line time difference and the frame period. The TDI sensor further records defect pixels of a pixel array such that in integrating pixel data to integrators, the pixel data associated with the defect pixels is not integrated into corresponding integrators.
    Type: Grant
    Filed: June 27, 2022
    Date of Patent: December 19, 2023
    Assignees: PIXART IMAGING INC., TAIWAN SPACE AGENCY
    Inventors: Ren-Chieh Liu, Chao-Chi Lee, Yi-Yuan Chen, En-Feng Hsu
  • Patent number: 11849237
    Abstract: There is provided a pixel circuit including an optically sensitive material (OSM) layer and a readout circuit. The OSM layer is arranged upon the readout circuit, and used to sense light energy to generate signal charges to be integrated in a floating diffusion. The readout circuit includes a source follower for amplifying a voltage on the floating diffusion within a readout interval, and the voltage on the floating diffusion is not changed by an external voltage pulse within the readout interval.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: December 19, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: Kazuya Yonemoto
  • Patent number: 11841994
    Abstract: An optical navigation system comprising: a control circuit; and an optical sensor, comprising a plurality of pins, wherein the optical sensor is configured to sense optical data and configured to compute motions according to the optical data. The optical sensor outputs the motions to the control circuit via a complex pin among the pins in a first mode. The optical sensor outputs data other than the motions to the control circuit via the complex pin in a second mode. The present invention also discloses an optical navigation system which shares a pin for receiving different types of data.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: December 12, 2023
    Assignee: PixArt Imaging Inc.
    Inventor: Tong Sen Liew
  • Patent number: 11842536
    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: Grant
    Filed: January 16, 2023
    Date of Patent: December 12, 2023
    Assignee: PixArt Imaging Inc.
    Inventor: Guo-Zhen Wang
  • Publication number: 20230393669
    Abstract: An optical navigation system comprising: a control circuit; and an optical sensor, comprising a plurality of pins, wherein the optical sensor is configured to sense optical data and configured to compute motions according to the optical data. The optical sensor outputs the motions to the control circuit via a complex pin among the pins in a first mode. The optical sensor outputs data other than the motions to the control circuit via the complex pin in a second mode. The present invention also discloses an optical navigation system which shares a pin for receiving different types of data.
    Type: Application
    Filed: June 2, 2022
    Publication date: December 7, 2023
    Applicant: PixArt Imaging Inc.
    Inventor: Tong Sen Liew
  • Patent number: 11838659
    Abstract: An image sensing system comprising: a storage device, comprising at least two first registers, wherein a number of the first registers following a first direction of the storage device is larger than a number of the first registers following a second direction of the storage device; a filter, comprising at least two second registers; and an SIPO (serial in parallel out) circuit, coupled between the storage device and the filter.
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: December 5, 2023
    Assignee: PixArt Imaging Inc.
    Inventor: Wai Lian Teo
  • Publication number: 20230386050
    Abstract: An optical sensor system for determining trajectory of a wheel includes: a wheel mounted in a wheel arch having an outer surface covered with evenly-spaced wheel treads; an optical sensor mounted in the wheel arch but not touching the wheel, for performing a plurality of counts corresponding to respectively capturing a plurality of images of the wheel according to the wheel treads, and comparing the captured images with a reference image to determine a 2D displacement. The optical sensor further performs a calculation to convert the measured 2D displacement of the wheel from its original position into a distance the wheel travels along a path in order to determine the wheel trajectory.
    Type: Application
    Filed: July 17, 2023
    Publication date: November 30, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: KEEN-HUN LEONG, BOON-HOW KOK, DENNIS DOMINIC DONALD
  • Patent number: 11829180
    Abstract: A pressure detection device of detecting a forced state of a deformable object includes a body, an image sensor and a processor. The body is a deformable hollow structure. The body has an inner surface and an outer surface, and an identifiable vision feature is disposed on the inner surface. The image sensor is disposed inside the body and faces the inner surface of the body, and is adapted to capture a frame containing the identifiable vision feature on the inner surface. The processor is electrically connected with the image sensor, and adapted to analyze position variation of the identifiable vision feature within the captured frame for identifying a motion type of a gesture applied to the outer surface of the body.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: November 28, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Wei-Chung Wang, Hsin-Chia Chen, Hui-Hsuan Chen, Chao-Chien Huang, Chu-Hung Nien
  • Patent number: 11826917
    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: Grant
    Filed: December 6, 2022
    Date of Patent: November 28, 2023
    Assignee: PixArt Imaging Inc.
    Inventor: Guo-Zhen Wang
  • Patent number: 11829832
    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 recognize a color of the pixels in one cluster according to color parameters of pixels in said one cluster.
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: November 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: Wen-Han Yao
  • Patent number: 11826906
    Abstract: A method for eliminating misjudgment of a reflective light applied to an autonomous robot is provided. The autonomous robot includes a driving system and an optical sensing system that includes a light source and a light sensor. The light source emits a transverse linear light as detection light and the light sensor senses reflective light signals from an object that reflects the detection light. In the method, a frame image including the reflective light signals is captured by the light sensor, characteristics of the reflective light signals are analyzed, and the characteristics of the reflective light signals can be corrected based on the characteristics of previous reflective light signals stored in a memory of the autonomous robot in order to exclude abnormal information. The object can be confirmed based on the corrected characteristics of reflective light signals. The misjudgment caused by the abnormal information can therefore be eliminated.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: November 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: Guo-Zhen Wang
  • Patent number: 11831328
    Abstract: A method of an electronic device includes: providing a capacitive digital-to-analog converter having a reference voltage input; providing a reference voltage providing circuit to generate a reference voltage to the reference voltage input of the capacitive digital-to-analog converter; and, generating a compensation signal into the reference voltage input of the capacitive digital-to-analog converter in response to at least one switching of at least one capacitor in a switchable capacitor network of the capacitive digital-to-analog converter.
    Type: Grant
    Filed: February 7, 2022
    Date of Patent: November 28, 2023
    Assignee: PixArt Imaging Inc.
    Inventor: Shiue-Shin Liu
  • Patent number: 11829836
    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: September 23, 2022
    Date of Patent: November 28, 2023
    Assignee: PIXART IMAGING INC.
    Inventor: Wen-Han Yao
  • Patent number: 11819184
    Abstract: An auto clean machine, comprising: a chassis; a first light source, configured to emit first light; a second light source, configured to emit second light; an optical sensor, configured to sense optical data generated according to reflected light of the second light or according to reflected light of the first light; and a control circuit, configured to analyze optical information of the optical data; wherein if the first light source is activated, the second light source is de-activated and the control circuit determines variation of the optical information is larger than a variation threshold, the control circuit changes the first light source to be non-activated and the second light source to be activated.
    Type: Grant
    Filed: October 21, 2022
    Date of Patent: November 21, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Muan Sian Ng, Wan Piang Lim, Hui-Hsuan Chen
  • Patent number: 11821985
    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: June 8, 2021
    Date of Patent: November 21, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Guo-Zhen Wang, Hui-Hsuan Chen
  • Patent number: 11821785
    Abstract: An optical sensor assembly is provided. The optical sensor assembly includes a circuit board, an optical sensor positioned on the circuit board, and a front cover attached to the circuit board and covering the optical sensor. The front cover includes an optical element configured to guide or condense an incident light of a predetermined wavelength onto the optical sensor. The front cover is made of polypropylene or polyethylene. The predetermined wavelength is in a range from 8 micrometers to 12 micrometers.
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: November 21, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Chih-Ming Sun, Po-Wei Yu
  • Patent number: 11822143
    Abstract: An optical lens comprising: a first part, comprising a first surface; a second part, comprising a second surface and at least one concave portion, wherein at least portion of the first surface and at least portion of the second surface are cylindrical. The second part further comprises a third surface, wherein the first surface and the second surface are not parallel with the third surface. The first part protrudes from the third surface. The optical lens can be attached to a barrel or an optical sensor without connection components or adhesive material. Therefore, the process of manufacturing the optical data capturing device can be simplified and related cost can be reduced.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: November 21, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Wan Piang Lim, Sai Mun Lee
  • Publication number: 20230366730
    Abstract: The invention provides an optical sensor package. The optical sensor package includes: a substrate; a sensor disposed on the substrate; a glass cover disposed directly on the sensor; and a cap disposed on the substrate comprised of a solid perimeter surrounding the sensor and a ceiling having a cut-out section above the glass cover. The thickness of the cap is 0.20 mm.
    Type: Application
    Filed: July 19, 2023
    Publication date: November 16, 2023
    Applicant: PIXART IMAGING INC.
    Inventors: SAI MUN LEE, CHEE PIN T'NG