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公开(公告)号：US11979738B2
公开(公告)日：2024-05-07
申请号：US18127671
申请日：2023-03-29
Applicant: PixArt Imaging Inc.
Inventor： Shih-Feng Chen , Yen-Min Chang
CPC classification number: H04S7/304 , G06F3/012 , G06F3/167 , H04W4/024 , H04W4/026 , H04W4/029 , H04W4/80 , H04W12/50
Abstract: A method of wireless communication locator station to be disposed at specific location includes: detecting rotation angle information of client-based portable device, carried or worn by user, according to specific wireless communication standard between wireless communication locator station and client-based portable device when client-based portable device is within signal range of wireless communication locator station; generating head pose direction estimation according to calculated rotation angle information; and when head pose direction estimation indicates that a user turns face towards wireless communication locator station, sending packet signal from wireless communication locator station to server-based portable device, successfully paired with and security-connected with client-based portable device, so that server-based portable device can transfer packet signal to client-based portable device after receiving packet signal.
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公开(公告)号：US11976990B2
公开(公告)日：2024-05-07
申请号：US17557002
申请日：2021-12-20
Applicant: PixArt Imaging Inc.
Inventor： Ming-Hung Tsai , Chun-Yang Chen , Yen-Po Chen
CPC classification number: G01L1/26 , G01L25/00 , G06F3/0414 , G06F3/0418
Abstract: A force sensing method, applied to a force sensing system comprising a plurality of force sensors and a touch sensing surface, comprising: (a) determining a first location of a first object on the touch sensing surface; (b) defining a first force sensing region according to the first location; and (c) computing a first system sensing force which the first object causes to the touch sensing surface according to the first location, and according to at least one sensor sensing force of a first part of the force sensors corresponding to the first force sensing region. The present invention also discloses a force sensing system which uses the above-mentioned force sensing method, and an efficient force sensor calibration method. Noises can be reduced and power consumption can be decreased, since only sensor sensing forces of force sensors near the object are used for computing the system sensing force.
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133.发明授权公开(公告)号：US11976942B2
公开(公告)日：2024-05-07
申请号：US17881586
申请日：2022-08-04
Applicant: PixArt Imaging Inc.
Inventor： Guo-Zhen Wang
CPC classification number: G01C3/02 , A47L9/009 , A47L9/2805 , A47L9/2852 , A47L11/4002 , A47L11/4011 , A47L11/4061 , A47L11/4066 , G01C21/20 , G01N21/94 , A47L2201/04
Abstract: An auto clean machine, comprising: an optical sensor; a light source, configured to generate a first light pattern; and a processing circuit, configured to determine which light pattern is the first light pattern if the optical sensor senses more than one light pattern. The present invention also discloses an optical navigation device with a first optical sensor and a second optical sensor.
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公开(公告)号：US20240126092A1
公开(公告)日：2024-04-18
申请号：US17966891
申请日：2022-10-17
Applicant: PIXART IMAGING INC.
Inventor： Sai-Mun LEE , Hun-Kwang LEE , Yee-Loong CHIN , Chee-Pin T'NG
CPC classification number: G02B27/0955 , G01S7/4815
Abstract: There is provided an optical navigation device including a substrate, a light sensor, a first light source, a second light source and a light directing member. The light sensor is arranged on the substrate and has a field of view (FOV) perpendicular to the substrate. The emission light of the first light source forms a first illumination light beam after passing the light directing member. The emission light of the second light source forms a second illumination light beam after passing the light directing member. A first crossover region of the first illumination light beam with the FOV is closer to the substrate than a second crossover region of the second illumination light beam with the FOV.
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公开(公告)号：US11953400B2
公开(公告)日：2024-04-09
申请号：US18142055
申请日：2023-05-02
Applicant: PIXART IMAGING INC.
Inventor： Che-Chia Hsu , Yu-Han Chen , Chi-Chieh Liao
CPC classification number: G01L9/12 , G01L9/0005
Abstract: A pressure sensing unit is provided. The pressure sensing unit includes a membrane and a pressure sensing pad group. The membrane has a first surface and a second surface. The pressure sensing pad group includes a first pressure sensing pad, a second pressure sensing pad, and a ground pad that are spaced apart from one another. The ground pad and one among the first pressure sensing pad and the second pressure sensing pad are located at the first surface of the membrane, another one among the first pressure sensing pad and the second pressure sensing pad is located at the second surface of the membrane, and an orthographic projection of the ground pad projected onto a reference plane is located between orthographic projections of the first pressure sensing pad and the second pressure sensing pad that are projected onto the reference plane. Therefore, a signal-to-noise ratio can be increased and an erroneous detection can be prevented.
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Patent Agency Ranking
公开(公告)号：US20240077955A1
公开(公告)日：2024-03-07
申请号：US18496933
申请日：2023-10-30
Applicant: PixArt Imaging Inc.
Inventor： Tong Sen Liew
IPC: G06F3/03 , G06F3/0354 , G06F3/038
CPC classification number: G06F3/0304 , G06F3/03543 , G06F3/038
Abstract: An optical sensor, comprising: a plurality of pins, wherein the optical sensor is configured to sense optical data and configured to compute motions according to the optical data; wherein the optical sensor outputs the motions to a control circuit via a complex pin among the pins in a first mode; wherein the optical sensor outputs data other than the motions to the control circuit via the complex pin in a second mode
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公开(公告)号：US11922666B2
公开(公告)日：2024-03-05
申请号：US17228731
申请日：2021-04-13
Applicant: PixArt Imaging Inc.
Inventor： Keen-Hun Leong , Kheng Jin Ooi , Yueh Mei Kim
IPC: G06V10/00 , G06V10/145 , G06V10/50 , G06V10/75
CPC classification number: G06V10/145 , G06V10/507 , G06V10/751
Abstract: An object detection system and method includes: an optical image sensor arranged to perform the following steps: capturing a calibration image during a calibration stage, dividing the calibration image into a plurality of quadrants, and calculating a parameter for each of the quadrants; capturing a plurality of raw images during a detection stage, dividing each image of the raw images into a plurality of quadrants, and calculating a parameter for each of the quadrants; comparing the respective parameters of each quadrant of a raw image with the respective parameters of each quadrant of the calibration image to generate a ratio value for each quadrant; and comparing the ratio value of each quadrant with a predetermined threshold. When each ratio value of specific quadrants of the quadrants is greater than the predetermined threshold, object detection is confirmed.
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公开(公告)号：US11921940B1
公开(公告)日：2024-03-05
申请号：US18121011
申请日：2023-03-14
Applicant: PixArt Imaging Inc.
Inventor： Tzu-Yu Chen
IPC: G06F3/038 , G06F3/03 , G06F3/0354
CPC classification number: G06F3/0383 , G06F3/0304 , G06F3/03543
Abstract: A method of an optical navigation device having a plurality of different tracking modes includes: using an image sensor to sense and generate a plurality of image frames; and, controlling and changing a tracking mode of the optical navigation device from a first tracking mode into a second tracking mode in response to an event that the optical navigation device changes from a first surface operation condition into a second surface operation condition.
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公开(公告)号：US20240054874A1
公开(公告)日：2024-02-15
申请号：US17883625
申请日：2022-08-09
Applicant: PixArt Imaging Inc.
Inventor： Cheng-Nan Tsai , Yen-Chang Chu , Chih-Ming Sun
IPC: G08B17/107
CPC classification number: G08B17/107
Abstract: A smoke detector includes a substrate, an optical detection module, a base and a top cover. The substrate has a ring shape region surrounding a central detection region, and a first block structure of the central detection region is protruded from the substrate and higher than an upper surface of the ring shape region. The optical detection module is disposed inside the central detection region. The base is disposed on the substrate and around the optical detection module. The base has a second block structure. The top cover is connected to the base. A lateral wall of the top cover is partly overlapped with the second block structure to form a guiding channel. The optical detection module analyzes variation of scattering parameters resulted from gaseous matter entering the top cover through the guiding channel for determining concentration of the gaseous matter.
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公开(公告)号：US20240044700A1
公开(公告)日：2024-02-08
申请号：US18486176
申请日：2023-10-13
Applicant: PixArt Imaging Inc.
Inventor： CHIH-MING SUN , PO-WEI YU
CPC classification number: G01J1/0422 , G01J1/0411 , H05K1/181 , H05K2201/10121 , H05K2201/10151
Abstract: An optical sensor assembly is provided. The optical sensor assembly includes a circuit board, an optical sensor positioned on the circuit board, and a front cover attached to the circuit board and covering the optical sensor. The front cover includes an optical element configured to guide or condense an incident light of a predetermined wavelength onto the optical sensor. The front cover is made of polypropylene or polyethylene. The predetermined wavelength is in a range from 8 micrometers to 12 micrometers.
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