公开(公告)号：US10728462B2

公开(公告)日：2020-07-28

申请号：US16153842

申请日：2018-10-08

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang

IPC: H04N5/235 ,  H04N5/225 ,  G01N23/04 ,  H01L27/146

Abstract: An image sensor, comprising: a first sensing region having a first size, configured to sense first kind of light having a first range of wavelengths; and a second sensing region having a second size, configured to sense second kind of light having a second range of wavelengths, wherein the first size and the second size are different, wherein at least portion of the first range of wavelengths and at least portion of the second range of wavelengths are different. The image sensor has a first light sensitivity level for sensing the first kind of light and has a second light sensitivity level for sensing the second kind of light, and a relation between the first size and the second size corresponds to a relation between the first light sensitivity level and the second light sensitivity level.

公开(公告)号：US20180341316A1

公开(公告)日：2018-11-29

申请号：US16055250

申请日：2018-08-06

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang

IPC: G06F1/32 ,  G06F3/0354 ,  G06F3/03 ,  G06F3/038

Abstract: A sensor device includes an image sensing array, a frame buffer, a first read line, a second read line and an energy accumulator. The image sensing array is configured to sense reflected light from a working surface and includes a plurality of sensing pixels and a plurality of self-powered pixels. The sensing pixels respectively output image data according to the sensed reflected light. The self-powered pixels respectively output photocurrent according to the sensed reflected light. The first read line is coupled between the sensing pixels and the frame buffer. The second read line is coupled between the self-powered pixels and the frame buffer. The energy accumulator stores electrical energy of the photocurrent via a charge path between the self-powered pixels and the energy accumulator.

公开(公告)号：US10108248B2

公开(公告)日：2018-10-23

申请号：US15283842

申请日：2016-10-03

Applicant: PIXART IMAGING INC.

Inventor： Guo-Zhen Wang

IPC: G06F1/32 ,  G06F3/0354 ,  G06F3/038 ,  G06F3/03

Abstract: An optical mouse device includes a light source, an image sensor array, an energy storage element, a frame buffer and a processor, wherein the image sensor array includes a plurality of sensing pixels and a plurality of self-powered pixels. In a first mode, the sensing pixels output image data to the frame buffer, and the self-powered pixels output photocurrent to the energy storage element. In a second mode, the self-powered pixels output intensity data associated with the photocurrent to the frame buffer, and the processor determines whether to leave the second mode or not according to the intensity data. The energy storage element is configured to provide energy required in illumination.

公开(公告)号：US10088568B2

公开(公告)日：2018-10-02

申请号：US14864809

申请日：2015-09-24

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang

IPC: G01S17/48 ,  G01S7/491

Abstract: An optical distance measurement method includes: acquiring a plurality of sensed values based on detecting light; performing a filtering operation to select a plurality of selected sensed values from the plurality of sensed values; determining a location of a center of gravity according to the plurality of selected sensed values; and calculating a plurality of depth values with respect to a plurality of detection points according to the location of the center of gravity and a plurality of depth information transformation functions respectively corresponding to the detection points.

公开(公告)号：US09876966B2

公开(公告)日：2018-01-23

申请号：US15011676

申请日：2016-02-01

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang ,  Yu-Hao Huang

IPC: G06F3/01 ,  H04N5/265 ,  H04N5/232 ,  G06F3/03 ,  G06K9/00

CPC classification number: H04N5/265 ,  G06F3/017 ,  G06F3/0304 ,  G06K9/00355 ,  H04N5/23232

Abstract: An image processing method applied to an image processing system comprising an image sensor. The image processing method comprises: (a) capturing a plurality of first images via the image sensor applying a first resolution; (b) computing an image variation tendency for the first images; and (c) controlling the image sensor to apply a second resolution higher than the first resolution if the image variation tendency matches a predetermined tendency. An image processing system applying the image processing method is also disclosed.

公开(公告)号：US09854159B2

公开(公告)日：2017-12-26

申请号：US15253453

申请日：2016-08-31

Applicant: PIXART IMAGING INC.

Inventor： Han-Chang Lin ,  Guo-Zhen Wang ,  Nien-Tse Chen

IPC: H04N5/232 ,  G06K9/00 ,  G06F3/01 ,  G02B27/00

CPC classification number: H04N5/23219 ,  G02B27/0093 ,  G06F3/013 ,  G06K9/00228 ,  G06K9/00597 ,  H04N5/23293

Abstract: An image 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.

公开(公告)号：US09805239B2

公开(公告)日：2017-10-31

申请号：US15262633

申请日：2016-09-12

Applicant: PIXART IMAGING INC.

Inventor： Guo-Zhen Wang ,  En-Feng Hsu

IPC: G06K7/14 ,  G06K7/10

CPC classification number: G06K7/1417 ,  G06K7/10722 ,  G06K7/1452

Abstract: Disclosed are a QR code detection device and an operation method thereof. The QR code detection device comprises a body, a barcode detector and a barcode decoder. The barcode detector captures and processes a code image outside the body, and accumulates a number of times when a predetermined pattern feature is recognized in the code image. The predetermined pattern feature is a predetermined distance ratio. The barcode detector chooses a near-distance detection rule or a far-distance detection rule according to the processed code image to determine whether the predetermined pattern feature is recognized in the QR code image. When the barcode decoder determines that the code image is a QR code image because the number of times equals to a threshold number, the barcode decoder is automatically turned on to capture and decode the QR code image outside the body.

公开(公告)号：US12253606B2

公开(公告)日：2025-03-18

申请号：US18369866

申请日：2023-09-19

Applicant: PIXART IMAGING INC.

Inventor： Guo-Zhen Wang ,  Ming-Tsan Kao

IPC: G01C3/08 ,  G01S17/46 ,  G01S17/89

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.

公开(公告)号：US12207786B2

公开(公告)日：2025-01-28

申请号：US17947167

申请日：2022-09-18

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang

IPC: A47L9/28 ,  G06T7/49

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.

公开(公告)号：US12189029B2

公开(公告)日：2025-01-07

申请号：US18613142

申请日：2024-03-22

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang ,  Tse-En Peng

IPC: G01S17/04 ,  G01S7/48 ,  G01S17/08

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.