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81.发明申请公开(公告)号：US20230059880A1
公开(公告)日：2023-02-23
申请号：US17979000
申请日：2022-11-02
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
Abstract: A dirtiness level determining method, applied to a robot cleaner comprising an image sensor, comprising: capturing an image of a reference surface as a reference image: capturing a current image; calculating a fixed pattern according to a difference between the reference image and the current image; calculating a dirtiness level of the image sensor according to the fixed pattern; and generating a notifying message if the dirtiness level is higher than a dirtiness threshold. The dirtiness level of the image sensor can be automatically determined by the robot cleaner, thus the user can be notified before the auto clean machine cannot normally operate.
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82.发明授权公开(公告)号：US11587308B2
公开(公告)日：2023-02-21
申请号：US17203772
申请日：2021-03-17
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
Abstract: An object determining system, 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 circuit, configured to determine an object kind of the object according to the first optical data; and an element analyzing circuit, configured to analyze element of the object according to the second optical data.
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公开(公告)号：US11565423B2
公开(公告)日：2023-01-31
申请号：US17470401
申请日：2021-09-09
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
Abstract: There is provided a cleaning robot including a light source module, an image sensor and a processor. The light source module projects a line pattern and a speckle pattern toward a moving direction. The image sensor captures an image of the line pattern and an image of the speckle pattern. The processor calculates one-dimensional depth information according to the image of the line pattern and calculates two-dimensional depth information according to the image of the speckle pattern.
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84.发明授权公开(公告)号：US11523722B2
公开(公告)日：2022-12-13
申请号：US16423165
申请日：2019-05-28
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
Abstract: A dirtiness level determining method applied to an electronic device comprising an image sensor. The method comprises: (a) capturing a first image at a first time point according to first type of light; (b) capturing a second image at a second time point after the first time point according to the first type of light; (c) calculating a first fixed pattern according to a first difference between the first image and the second image; and (d) calculating a first dirtiness level of the image sensor according to the first fixed pattern; (e) generating a first notifying message if the first dirtiness level is higher than a dirtiness threshold.
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公开(公告)号：US20220388355A1
公开(公告)日：2022-12-08
申请号：US17888434
申请日：2022-08-15
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang , Chang-Sheng Chiu
Abstract: A tire surface managing method, comprising: emitting detecting light to a target object on a surface of a tire; receiving reflected detecting light from the target object and from the surface adjacent to the target object; determining whether the target object protrudes according to a distance calculated according to the reflected detecting light from the target object and a distance calculated according to the reflected detecting light from the surface; determining whether the target object forms a hole on the surface according to the distance calculated according to the reflected detecting light from the target object and the distance calculated according to the reflected detecting light from the surface; receiving the reflected detecting light from the surface to calculate a width of the hole on the tire; and activating a protection mechanism for a vehicle comprising the tire if the width is larger than a width threshold.
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Patent Agency Ranking
86.发明授权公开(公告)号：US11493336B2
公开(公告)日：2022-11-08
申请号：US16907329
申请日：2020-06-22
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
Abstract: An optical navigation device comprising: a processing circuit; a first light source, configured to emit first light; a cover; at least one second light source, configured to emit second light toward the cover; and an first optical sensor, configured to sense first optical data generated according to the first light and to sense second optical data generated according to the second light on the cover. The processing circuit determines a dirtiness level of the cover based on the second optical data sensed by the first optical sensor. The optical navigation device can further comprise a second optical sensor. Also, an optical navigation device which can avoid the interference of another optical navigation device is also disclosed.
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公开(公告)号：US11453259B2
公开(公告)日：2022-09-27
申请号：US15885843
申请日：2018-02-01
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang , Chang-Sheng Chiu
IPC: B60C25/00 , G01B11/22 , B60Q9/00 , G01B11/04 , G01M17/02 , G01B11/25 , B60C11/24 , G01S17/04 , B60K28/10
Abstract: An object surface managing method comprising: (a) emitting detecting light to the groove via alight source; (b) receiving first reflected detecting light from the surface and second reflected detecting light from a bottom of the groove via a light sensor; and (c) calculating a groove depth of the groove according to the first reflected detecting light and the second reflected detecting light.
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公开(公告)号：US11353884B2
公开(公告)日：2022-06-07
申请号：US16258675
申请日：2019-01-28
Applicant: PixArt Imaging Inc.
Inventor： Shih-Chin Lin , Wei-Chung Wang , Guo-Zhen Wang
Abstract: There is provided a cleaning robot including a first light source module and a second light source module respectively project a first light section and a second light section, which are vertical light sections, in front of a moving direction, wherein the first light section and the second light section cross with each other at a predetermined distance in front of the cleaning robot so as to eliminate a detection dead zone between the first light source module and the second light source module in front of the cleaning robot to avoid collision with an object during operation.
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公开(公告)号：US11303820B2
公开(公告)日：2022-04-12
申请号：US16993433
申请日：2020-08-14
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
Abstract: There is provided an image processing device including a light sensor and a processor. The light sensor is used to detect light and output an image frame. The processor identifies intensity of ambient light according to an image parameter associated with the image frame. When the ambient light is identified to be strong enough, the processor performs an object identification directly using the image frame. When the ambient light is identified to be not enough, the processor firstly converts the image frame to a converted image using a machine learning model, and then performs the object identification using the converted image.
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公开(公告)号：US11294391B2
公开(公告)日：2022-04-05
申请号：US16423571
申请日：2019-05-28
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
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.
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