公开(公告)号：USRE48624E1

公开(公告)日：2021-07-06

申请号：US15586759

申请日：2017-05-04

Applicant: PixArt Imaging Inc.

Inventor： En-Feng Hsu ,  Ming-Tsan Kao

IPC: G07C5/08 ,  H04N5/225 ,  H04N5/232 ,  H04N5/77

Abstract: An event data recorder (EDR) is configured to operate in a driving mode and a parking mode. In the driving mode, the EDR is configured to perform high quality video recording using an image-capturing circuit. In the parking mode, the EDR is configured to periodically activate the image-capturing circuit for event detection and start to perform low quality video recording after detecting a specific event.

公开(公告)号：US11054313B2

公开(公告)日：2021-07-06

申请号：US15394844

申请日：2016-12-30

Applicant: PixArt Imaging Inc.

Inventor： Chih-Ming Sun ,  Sen-Huang Huang

IPC: G01J5/10 ,  G01J5/12 ,  G01J1/02 ,  G01J5/04 ,  G01J1/42 ,  G01J5/08 ,  G01J5/14 ,  G01J5/00

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.

公开(公告)号：US11051758B2

公开(公告)日：2021-07-06

申请号：US16591651

申请日：2019-10-03

Applicant: PixArt Imaging Inc.

Inventor： Che-Chia Hsu ,  Jian-Cheng Liao ,  Yu-Han Chen ,  Chi-Chieh Liao

IPC: A61B5/00 ,  G04G21/02 ,  H03K17/955 ,  G06F1/16

Abstract: A wearable electronic device with a function of detecting a wearing state, comprising: at least one electrode; a capacitance calculating circuit, coupled to the electrode, configured to calculate a capacitance variation generated by at least one of the electrode; and a wearing state determining circuit, coupled to the capacitance calculating circuit, configured to determine the wearing state according to the capacitance variation. By this way, the wearing state can be auto detected and the wearable electronic device can be correspondingly control according to the wearing state.

公开(公告)号：US11048342B2

公开(公告)日：2021-06-29

申请号：US16730046

申请日：2019-12-30

Applicant: PixArt Imaging Inc.

Inventor： Sai-Mun Lee

IPC: G06F3/0354 ,  G06F3/0338 ,  G06F3/0362 ,  G06F3/0346 ,  G06F3/01 ,  G06F3/03

Abstract: There is provided a dual mode optical navigation device. The dual mode optical navigation device is configured to operate in a first mode or a second mode on a working surface. The dual mode optical navigation device includes an image sensor and a processor. The image sensor captures an image frame of the working surface. The processor calculates a ratio of a bright area and a dark area in one image frame capture by the image sensor, enters the first mode in response to the calculated ratio being larger than a ratio threshold, and enters the second mode in response to the calculated ratio being within a ratio threshold range. The ratio threshold range is smaller than the ratio threshold.

公开(公告)号：US20210185260A1

公开(公告)日：2021-06-17

申请号：US17172147

申请日：2021-02-10

Applicant: PIXART IMAGING INC.

Inventor： Sen-Huang HUANG ,  Tso-Sheng TSAI

IPC: H04N5/378 ,  H04N5/374 ,  H01L27/146

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.

公开(公告)号：US11039081B2

公开(公告)日：2021-06-15

申请号：US16513712

申请日：2019-07-17

Applicant: PIXART IMAGING INC.

Inventor： Wen-Han Yao

IPC: H04N5/235 ,  H04N5/353 ,  H04N5/374

Abstract: There is provided an image sensor for exposing a plurality of pixel rows within a frame period using a rolling shutter. The image sensor includes a processor for calculating bright-dark distribution patterns of image frames. The processor further adjusts the frame period to be substantially identical to a predetermined period by changing a total number of exposed line times within the frame period when a difference between the bright-dark distribution patterns of two image frames is larger than a predetermined threshold.

公开(公告)号：US11029765B1

公开(公告)日：2021-06-08

申请号：US16892226

申请日：2020-06-03

Applicant: PixArt Imaging Inc.

Inventor： Chun Heap Leow

IPC: G06F3/03

Abstract: An optical mouse includes a pixel array and a light source. A method for determining when the optical mouse is in a lifted condition above a surface includes: accumulating pixel values of a first column of the pixel array, the first column being closest to the light source; accumulating pixel values of a second column of the pixel array, the second column being different from the first column; comparing the accumulated pixel values of the first column with the accumulated pixel values of the second column; and when a difference between the accumulated pixel values of the first column and the accumulated pixel values of the second column is greater than a threshold value, determining the optical mouse to be in a lifted condition.

公开(公告)号：US20210165496A1

公开(公告)日：2021-06-03

申请号：US17152106

申请日：2021-01-19

Applicant: PIXART IMAGING INC.

Inventor： CHUNG-YUO WU ,  YI-HSIEN KO ,  NIENTSE CHEN

IPC: G06F3/01 ,  A63B24/00 ,  A63B71/06 ,  G06F3/0484

Abstract: An apparatus having a gesture sensor is provided. The gesture sensor includes an image sensing unit and a processing unit. The image sensing unit can capture at least a gesture image of user. The processing unit is electrically connected to the image sensing unit. The processing unit can send at least a control command according to the gesture image to operate the apparatus.

公开(公告)号：US20210142088A1

公开(公告)日：2021-05-13

申请号：US17151305

申请日：2021-01-18

Applicant: PixArt Imaging Inc.

Inventor： ZI-HAO TAN ,  KEVIN LEN-LI LIM

IPC: G06K9/20 ,  G06K9/60 ,  H03H17/02

Abstract: There is provided a 2-stage moving average filter for a navigation device including a delta regulator and an N-taps average circuit. The delta regulator is used as a first stage to receive motion delta at a varied frequency, and combine or split the received motion delta to output a regulated motion delta at a fixed frequency. The N-taps average circuit receives and averages N regulated motion delta and outputs the averaged motion delta at a fixed frequency.

公开(公告)号：US20210127049A1

公开(公告)日：2021-04-29

申请号：US17141339

申请日：2021-01-05

Applicant: PixArt Imaging Inc.

Inventor： GUO-ZHEN WANG ,  SHIAW-YU JOU

IPC: H04N5/235 ,  G01C3/08 ,  H04N5/225 ,  H04N5/232

Abstract: An imaging system includes a light source, an image sensor and a processing unit. The image sensor alternatively captures a first bright image, a first dark image, a second bright image and a second dark image, wherein the first bright image is captured with a first exposure time corresponding to activation of the light source within a first time interval, the first dark image is captured with the first exposure time corresponding to deactivation of the light source within the first time interval, the second bright image is captured with a second exposure time corresponding to activation of the light source within a second time interval, and the second dark image is captured with the second exposure time corresponding to deactivation of the light source within the second time interval, wherein the second exposure time is longer than the first exposure time. The processing unit adjusts the second exposure time according to an object image size in the second dark image, and controls the image sensor to stop capturing the first bright and dark images with the first exposure time when no object image is contained in the second dark image.