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公开(公告)号：US11808852B2
公开(公告)日：2023-11-07
申请号：US17485518
申请日：2021-09-27
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
IPC: G01S17/48 , G01S7/4912 , G01S7/4913
CPC classification number: G01S17/48 , G01S7/4912 , G01S7/4913
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 centroid according to the plurality of selected sensed values; and calculating a plurality of depth values with respect to a plurality of detecting points according to the location of the centroid and a plurality of depth information transformation functions respectively corresponding to the detecting points.
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12.发明公开公开(公告)号：US20230341551A1
公开(公告)日：2023-10-26
申请号：US17724509
申请日：2022-04-20
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
CPC classification number: G01S17/08 , G01S7/4816 , A47L9/2805 , A47L9/009 , G06V20/58 , A47L2201/04
Abstract: A non-solid material detection device, comprising: a processing circuit; an image sensor; a first light source, configured to emit first light following a first direction; a second light source, configured to emit second light following a second direction. If the non-solid material detection device is located on the surface, the first direction is toward a surface and the second direction is leaving or parallel with the surface. The processing circuit determines an obstacle based on a second sensing image generated according to the second light and determines non-solid material based on a first sensing image generated according to the first light. The present invention also discloses a distance computing device. Via the present invention, the non-solid material detection and the distance computing can be more accurate.
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公开(公告)号：US11740684B2
公开(公告)日：2023-08-29
申请号：US17380660
申请日：2021-07-20
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
IPC: G06F1/3234 , G06F3/0354 , G06F3/038 , G06F3/03
CPC classification number: G06F1/3259 , G06F3/038 , G06F3/0317 , G06F3/0354 , G06F3/03543 , Y02D10/00
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.
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公开(公告)号：US11698457B2
公开(公告)日：2023-07-11
申请号：US16561001
申请日：2019-09-04
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang , Tse-En Peng
CPC classification number: G01S17/04 , G01S7/4808 , G01S17/08
Abstract: An object detecting system comprising: a first distance measuring device, configured to measure a first distance between a first part of an object and the first distance measuring device; a second distance measuring device, configured to measure a second distance between a second part of the object and the second distance measuring device; a uniform light source, configured to emit uniform light to the object; an optical sensor, configured to sense optical data of the object generated based on the uniform light; and a control circuit, configured to calculate a location of the object according to the first distance, the second distance and the optical data.
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公开(公告)号：US11675365B2
公开(公告)日：2023-06-13
申请号：US17732576
申请日：2022-04-29
Applicant: PixArt Imaging Inc.
Inventor： Shih-Chin Lin , Wei-Chung Wang , Guo-Zhen Wang
CPC classification number: G05D1/0248 , A47L11/4011 , B25J11/0085 , G05D1/0242 , G06T7/521 , A47L2201/06 , G05D2201/0215
Abstract: There is provided a moving 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 moving 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 moving robot to avoid collision with an object during operation.
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Patent Agency Ranking
公开(公告)号：US11548157B2
公开(公告)日：2023-01-10
申请号：US16653982
申请日：2019-10-15
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
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.
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公开(公告)号：US20220270233A1
公开(公告)日：2022-08-25
申请号：US17742413
申请日：2022-05-12
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang , Hung-Ching Lai
Abstract: An optical device, comprising: a processing circuit; a light source, configured to emit light to a surface; and an optical sensor, configured to sense optical data generated based on reflected light or scattering light of the light. The processing circuit computes a dirt level of the surface according to the optical data.
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公开(公告)号：US11163063B2
公开(公告)日：2021-11-02
申请号：US16108066
申请日：2018-08-21
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
IPC: G01S17/48 , G01S7/4912 , G01S7/4913
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 centroid according to the plurality of selected sensed values; and calculating a plurality of depth values with respect to a plurality of detecting points according to the location of the centroid and a plurality of depth information transformation functions respectively corresponding to the detecting points.
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公开(公告)号：US11141863B2
公开(公告)日：2021-10-12
申请号：US16157096
申请日：2018-10-11
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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公开(公告)号：US20210266442A1
公开(公告)日：2021-08-26
申请号：US16799842
申请日：2020-02-25
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
Abstract: An image capturing device comprising an image sensor. The image sensor comprises: a first sensing region, having a first sensing threshold; and a second sensing region, having a second sensing threshold lower than the first sensing threshold. At least one object image is determined to be invalid when the object image captured by the first sensing region has brightness formation lower the first sensing threshold. At least one the object image is determined to be invalid when the object image captured by the second sensing region has brightness formation lower the second sensing threshold. The present invention also discloses a distance measuring device using the image sensor.
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