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公开(公告)号：US20230007201A1
公开(公告)日：2023-01-05
申请号：US17364903
申请日：2021-07-01
Applicant: PixArt Imaging Inc.
Inventor： Wooi Kip Lim
IPC: H04N5/378 , H04N5/235 , H04N5/3745
Abstract: An image sensor device includes a sensor array and a processing circuit. The sensor array includes a plurality of pixel units each including a photodiode unit and a storage capacitor. The sensor array generates an image of a specific frame, and the photodiode unit is illuminated by a light ray to generate a photodiode current which is stored in the storage capacitor when the image sensor device performs an exposure operation. The processing circuit generates a reference current according to photodiode current(s) of photodiode unit(s) of pixel unit(s) before the exposure operation arranged for the specific frame starts, and predicts a length of an exposure time interval of the exposure operation for the specific frame based on the generated reference current.
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公开(公告)号：US11533449B2
公开(公告)日：2022-12-20
申请号：US17515575
申请日：2021-11-01
Applicant: PixArt Imaging Inc.
Inventor： Chih-Huan Wu , Wen-Cheng Yen
Abstract: There is provided a photographing device having two output interfaces that respectively used to output a first image frame and a second image frame. The first image frame is provided to a processor of the photographing device to perform the feature extraction and tag the second image frame accordingly. The tagged second image frame is for the image recording of an external back end.
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公开(公告)号：US11526195B2
公开(公告)日：2022-12-13
申请号：US17680243
申请日：2022-02-24
Applicant: PixArt Imaging Inc.
Inventor： Ming-Hung Tsai , Tse-Chung Su , Ren-Hau Gu , Tzung-Min Su
Abstract: An electronic device with a function of detecting a touch state, comprising: at least one first electrode, configured to generate a first capacitance reflecting a distance between the first electrode and an object; at least one second electrode, configured to generate a second capacitance reflecting a distance between the second electrode and the object, and wherein a first distance between the first electrode and the object is smaller than a second distance between the second electrode and the object when the electronic is in a wearing state; a capacitance calculating circuit, configured to calculate the first capacitance and the second capacitance; and a processing circuit, configured to determine if the electronic device is in the wearing state based on a capacitance difference between the first capacitance and the second capacitance. Via such structure, the touch state of the electronic device can be precisely acquired.
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144.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：US20220390646A1
公开(公告)日：2022-12-08
申请号：US17336326
申请日：2021-06-02
Applicant: PixArt Imaging Inc.
Inventor： Ching Geak CHAN , Chung-Ting Yang , Feng-Chi Liu
Abstract: An optical tracking device is used to track a target object. An outer surface of the target object is divided into a first region and a second region adjacent to each other, and a marker is disposed on the first region. The optical tracking device includes an optical sensor and an operation processor. The optical sensor has auto exposure function and is adapted to acquire a detection image containing at least one of the first region and the second region. The operation processor is electrically connected to the optical sensor and adapted to analyze variation of an exposure parameter of the auto exposure function for determining whether the first region is appeared in the detection image, so as to acquire an operation datum of the target object.
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Patent Agency Ranking
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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公开(公告)号：US20220378376A1
公开(公告)日：2022-12-01
申请号：US17331616
申请日：2021-05-26
Applicant: PixArt Imaging Inc.
Inventor： Ren-Hau Gu
IPC: A61B5/00
Abstract: A wearable electronic device, comprising: a substrate: a first motion sensing region, comprising at least one first electrode on the substrate; a second motion sensing region, comprising at least one second electrode, wherein a shielding layer is provided on the second electrode, and the second electrode is between the shielding layer and the substrate, wherein a user causes more capacitance variation to the first electrodes and causes less capacitance variation to the second electrodes when the user wears the smart watch; a capacitance calculating circuit, coupled to the first electrode, configured to calculate a capacitance variation generated by the first electrode or the second electrode; and a motion determination circuit, configured to determine a motion of the wearable electronic device according to the capacitance variation of the first electrode or the capacitance variation of the second electrode.
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公开(公告)号：US20220365252A1
公开(公告)日：2022-11-17
申请号：US17557097
申请日：2021-12-21
Applicant: PIXART IMAGING INC.
Inventor： Hui-Hsuan CHEN , Yen-Hung WANG , Wen-Yen SU
IPC: G02B3/10 , G02B3/08 , B29D11/00 , G06F3/0354 , G06F3/03
Abstract: There is provided a lens including a first curved surface and a second curved surface. The first curved surface and the second curved surface have different focal distances and are arranged interlacedly along a radial direction of the lens.
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149.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：US11470264B2
公开(公告)日：2022-10-11
申请号：US17319101
申请日：2021-05-13
Applicant: PixArt Imaging Inc.
Inventor： Wen-Han Yao
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.
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