公开(公告)号：US12184998B2

公开(公告)日：2024-12-31

申请号：US18076392

申请日：2022-12-07

Applicant: PIXART IMAGING INC.

Inventor： Chih-Huan Wu

IPC: H04N5/335 ,  H04N23/73 ,  H04N25/51 ,  H04N25/532

Abstract: There is provided a global shutter sensor including a pixel array and a processor. The pixel array acquires first pixel data corresponding to a first exposure period and second pixel data corresponding to a second exposure period of different pixel regions using time division or spatial division, wherein the first exposure period is shorter than the second exposure period. The processor calculates a difference between (the second exposure period/the first exposure period)×the first pixel data and the second pixel data to obtain parasitic light sensitivity of the different pixel regions, and determines gains and/or exposure periods corresponding to the different pixel regions to compensate the parasitic light sensitivity.

公开(公告)号：US12177579B2

公开(公告)日：2024-12-24

申请号：US18091399

申请日：2022-12-30

Applicant: PixArt Imaging Inc.

Inventor： Wooi Kip Lim

IPC: H04N23/80 ,  H04N25/46 ,  H04N25/771 ,  H04N25/78

Abstract: A method of an image sensor device includes: providing a pixel array having a plurality of pixel units; using a pixel pre-processing circuit for receiving a plurality of analog pixel signals respectively from the plurality of pixel units to perform a low-pass filter operation upon the plurality of analog pixel signals in analog domain to generate a plurality of analog processed signals, a number of the plurality of analog processed signals being smaller than a number of the plurality of analog pixel signals; using an analog-to-digital converter for converting the plurality of analog processed signals in the analog domain into a plurality of digital processed signals in digital domain; and, transmitting the plurality of digital processed signals in digital domain into a digital processing circuit coupled to the analog-to-digital converter.

公开(公告)号：US12174048B2

公开(公告)日：2024-12-24

申请号：US18206584

申请日：2023-06-06

Applicant: PixArt Imaging Inc.

Inventor： Kuan-Choong Shim ,  Gim-Eng Chew

IPC: G01D5/347

Abstract: There is provided an optical encoder including a photodiode array and a code disk opposite to each other. The photodiode array includes at least three sets of position photodiodes and two index photodiodes arranged transversally. The two index photodiodes are adjacently arranged at the same side of the at least three sets of position photodiodes. A first set of position photodiodes and a last set of position photodiodes of the at least three sets of position photodiodes are partially covered to alleviate the total harmonic distortion. The rest position photodiodes of the at least three sets of position photodiodes other than the first and last sets of position photodiodes are not covered.

公开(公告)号：US12158994B1

公开(公告)日：2024-12-03

申请号：US18212200

申请日：2023-06-21

Applicant: PixArt Imaging Inc.

Inventor： Keng Yeen Lye

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

Abstract: An optical navigation device, comprising: an image sensor, comprising a first number of pixels; and a processing circuit, configured to perform following steps: controlling the image sensor to sense a first sensing image by the first number of pixels in a first mode; and controlling the image sensor to perform a pixel binning such that the image sensor senses a second sensing image by a second number of binning pixels in a second mode; wherein the first number is larger than the second number, and each of the binning pixels corresponds to a plurality of the pixels.

公开(公告)号：US20240394832A1

公开(公告)日：2024-11-28

申请号：US18614729

申请日：2024-03-24

Applicant: PixArt Imaging Inc.

Inventor： Wen-Han Yao

IPC: G06T3/40 ,  H04N7/18 ,  H04N23/80 ,  H04N23/667

Abstract: An image down-sampling method, for down-sampling a sensing image comprising a plurality of first pixels and a plurality of second pixels which are alternatively arranged, comprising: generating a first output pixel value according to at least one pixel value of at least one of the first pixel in a first down-sampling group; wherein the first down-sampling group comprises an odd number of pixels. By this way, the saw-tooth image issue in prior art may be improved. If the image down-sampling method is applied to a surveillance camera, the accuracy of event detection of the surveillance camera may be increased.

公开(公告)号：US12154334B2

公开(公告)日：2024-11-26

申请号：US18218045

申请日：2023-07-04

Applicant: PIXART IMAGING INC.

Inventor： Guo-Zhen Wang

IPC: G06V20/00 ,  G06F18/2413 ,  G06F18/243 ,  G06N3/045 ,  G06N3/08 ,  G06N20/00 ,  G06V10/44 ,  G06V10/764 ,  G06V10/82 ,  G06V20/70

Abstract: An image recognition method and system based on deep learning are provided. The image recognition system includes a first recognizing engine, at least one second recognizing engine and a processing circuit. The second recognizing engine is activated to recognize an image when the first recognizing engine is recognizing the image. The processing circuit determines whether to interrupt the first recognizing engine recognizing the image according to a result outputted by the second recognizing engine after the second recognizing engine completes recognition of the image.

公开(公告)号：US20240385714A1

公开(公告)日：2024-11-21

申请号：US18789632

申请日：2024-07-30

Applicant: PIXART IMAGING INC.

Inventor： CHI-CHIEH LIAO

IPC: G06F3/041 ,  G06F3/044 ,  H01L25/075

Abstract: A lighting touchpad is provided, which includes a substrate module, a sensing electrode layer formed on the substrate module, a driving electrode layer including a plurality of driving electrodes formed on the substrate module, a plurality of light emitting diode (LED) dies, a protective layer, and a controller. The protective layer covers the sensing electrodes, the driving electrodes, and the LED dies. The controller is electrically coupled to the sensing electrode layer, the driving electrode layer, and the LED dies through the substrate module. The substrate module includes a first substrate having two opposite surfaces. The driving electrode layer is formed on one of the two opposite surfaces of the first substrate, and the LED dies are mounted on another one of the two opposite surfaces of the first substrate and are closer to the protective layer.

公开(公告)号：US12147241B2

公开(公告)日：2024-11-19

申请号：US18371471

申请日：2023-09-22

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang

IPC: G05D1/00 ,  G06T5/00 ,  G06T7/62 ,  G06T7/70 ,  G06T7/73

Abstract: There is provided a moving robot including a light projector, an image sensor and a processing unit. The light projector projects a vertical light segment toward a moving direction. The image sensor captures, toward the moving direction, an image frame containing a light segment image associated with the vertical light segment. The processing unit calculates a step distance and a segment feature according to the image frame, outputs a flag signal according to the segment feature to indicate whether the calculated step distance is confident or not, and perform a pixel interpolation in calculating the step distance to improve the identification accuracy.

公开(公告)号：US20240362952A1

公开(公告)日：2024-10-31

申请号：US18308678

申请日：2023-04-28

Applicant: PIXART IMAGING INC.

Inventor： Tzung-Min SU ,  Yu-Ju LEE ,  Ren-Hau GU

IPC: G06V40/20 ,  G06F21/32 ,  G06V10/70 ,  G06V40/12

CPC classification number: G06V40/28 ,  G06F21/32 ,  G06V10/768 ,  G06V40/1365 ,  G06V40/1394

Abstract: There is provided an electronic device arranged to be unlocked using a fingerprint. The electronic device includes a touch pad, a processor and an operation system. The touch pad acquires fingerprint data within sequential multiple time intervals, respectively. The processor recognizes a fingerprint of each time interval according to the fingerprint data. Upon a sequence and an operating feature of multiple fingerprints matching a predetermined condition, the processor controls the operation system to unlock the electronic device.

公开(公告)号：US12106649B2

公开(公告)日：2024-10-01

申请号：US18509350

申请日：2023-11-15

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Nan Tsai ,  Guo-Zhen Wang ,  Ching-Kun Chen ,  Yen-Chang Chu ,  Chih-Ming Sun

IPC: G08B17/10 ,  G08B17/107

CPC classification number: G08B17/107

Abstract: There is provided a smoke detector including a first light source, a second light source surface, a light sensor and a processor. The light sensor receives reflected light when the first light source and the second light source emit light, and generates a first detection signal corresponding to light emission of the first light source and a second detection signal corresponding to light emission of the second light source. The processor distinguishes smoke and floating particles according to a similarity between the first detection signal and the second detection signal.