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131.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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132.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：US11582555B2
公开(公告)日：2023-02-14
申请号：US17490532
申请日：2021-09-30
Applicant: PixArt Imaging Inc.
Inventor： Ming Shun Manson Fei , Yi-Hsien Ko
Abstract: There is provided a smart audio system including multiple audio devices and a central server. The central server confirms a model of every audio device and a position thereof in an operation area in a scan mode. The central server confirms a user position or a user state to accordingly control output power of a speaker of each of the multiple audio devices in an operation mode.
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公开(公告)号：US11582413B2
公开(公告)日：2023-02-14
申请号：US17408733
申请日：2021-08-23
Applicant: PixArt Imaging Inc.
Inventor： Joon-Chok Lee , Kevin Len-Li Lim
IPC: H04N5/365 , G06F3/0354 , G06T5/20
Abstract: There is provided an optical navigation device including an image sensor and a processing unit. The image sensor outputs successive image frames. The processing unit calculates a contamination level and a motion signal based on filtered image frames, and determines whether to update a fixed pattern noise (FPN) stored in a frame buffer according to a level of FPN subtraction, the calculated contamination level and the calculated motion signal to optimize the update of the fixed pattern noise.
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公开(公告)号：US11575854B2
公开(公告)日：2023-02-07
申请号：US17378843
申请日：2021-07-19
Applicant: PIXART IMAGING INC.
Inventor： Tso-Sheng Tsai
IPC: H01L27/146 , H04N5/378 , H04N5/374 , H01L31/107
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 and a global current source circuit. Each of the plurality of pixel circuits includes a single photon avalanche diode and four P-type or N-type transistors. 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.
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Patent Agency Ranking
136.发明授权公开(公告)号：US11573127B2
公开(公告)日：2023-02-07
申请号：US16294873
申请日：2019-03-06
Applicant: PixArt Imaging Inc.
Inventor： Chih-Ming Sun , Sen-Huang Huang
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.
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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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公开(公告)号：US11561638B2
公开(公告)日：2023-01-24
申请号：US17316345
申请日：2021-05-10
Applicant: PIXART IMAGING INC.
Inventor： Chi-Chieh Liao
Abstract: There is provided a touch force sensor including a first drive electrode, a second drive electrode and a receiving electrode. The first drive electrode is used to form a first capacitance with the receiving electrode. The second drive electrode is used to form a second capacitance with the receiving electrode. The receiving electrode shields the first drive electrode such that when a conductor approaches the receiving electrode, only the second capacitance is changed but the first capacitance is not changed. The first capacitance is changed only when the conductor gives a force upon the receiving electrode.
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139.发明申请公开(公告)号：US20230009213A1
公开(公告)日：2023-01-12
申请号：US17372567
申请日：2021-07-12
Applicant: PixArt Imaging Inc.
Inventor： Ren-Hau Gu , Hsiu-Ling Yeh
IPC: A61B5/1455 , A61B5/00 , A61B5/024 , A61B5/0205
Abstract: An optical data sensing device of a biological information measuring device, comprising: an optical sensor; a first light emitting device, configured to emit first light away from the optical sensor; and a first opaque isolation component, located between the optical sensor and the first light emitting device, configured to reduce the first light received by the optical sensor. The present invention also discloses an optical data sensing device comprising a plurality of light emitting devices with different emitting directions or wavelengths, to improve the accuracy of biological information measuring.
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公开(公告)号：US11550161B2
公开(公告)日：2023-01-10
申请号：US17197336
申请日：2021-03-10
Applicant: PixArt Imaging Inc.
Inventor： Sai-Mun Lee
IPC: G02B27/09 , G06F3/03 , G06F3/0354
Abstract: There is provided an illumination system of a navigation device including a light beam shaping optics, and a first light source and a second light source having different characteristics. The light beam shaping optics is used to shape light beams emitted by the first light source and the second light source to illuminate a work surface with substantially identical incident angles and/or beam sizes.
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