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公开(公告)号：US11829832B2
公开(公告)日：2023-11-28
申请号：US17844285
申请日：2022-06-20
Applicant: PixArt Imaging Inc.
Inventor： Wen-Han Yao
CPC classification number: G06K7/10722 , G06K7/1413 , G06T7/90 , G06T2207/10024
Abstract: There is provided a barcode detection device including an image sensor and a processor. The image sensor captures an image frame of a color barcode. The processor sequentially processes every row of the image frame to find at least one color segment in each row of the image frame, categorizes color segments of a same color in one cluster according to a position relationship and a color similarity of the color segments in the image frame, and recognize a color of the pixels in one cluster according to color parameters of pixels in said one cluster.
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公开(公告)号：US20210329193A1
公开(公告)日：2021-10-21
申请号：US17326298
申请日：2021-05-20
Applicant: PixArt Imaging Inc.
Inventor： Chih-Huan Wu , Yi-Hsien Ko , Wen-Han Yao
Abstract: A motion detection method applied into an image sensor device includes: providing a plurality of regions of interest (ROIs) on at least one monitoring image; for each region of interest (ROI): detecting whether at least one motion event occurs within the each ROI; and determining a priority level of the each ROI according to at least one feature information of the at least one motion event; and determining an alarm schedule of the ROIs for a user according to a plurality of priority levels of the RIOs.
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公开(公告)号：US12207024B2
公开(公告)日：2025-01-21
申请号：US18111610
申请日：2023-02-20
Applicant: PixArt Imaging Inc.
Inventor： Chih-Huan Wu , Wen-Han Yao
IPC: H04N7/18 , G06T7/246 , G08B13/196
Abstract: A method of an image sensor circuit includes: providing an event camera comprising at least one pixel unit; using the event camera to sense at least one current pixel value of the at least one pixel unit to detect whether at least one pixel value changes; when the at least one pixel value changes, using the event camera to trigger the digital processing circuit when the digital processing circuit is in a power saving mode and transmit information of the at least one pixel value to the digital processing circuit.
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公开(公告)号：US11743025B1
公开(公告)日：2023-08-29
申请号：US17695803
申请日：2022-03-15
Applicant: PixArt Imaging Inc.
Inventor： Chih-Huan Wu , Wen-Han Yao , Ren-Hau Gu
IPC: H04L7/00 , H04L67/12 , H04L67/141
CPC classification number: H04L7/0075 , H04L67/12 , H04L67/141
Abstract: A method of an optical sensor device includes: using an oscillator circuit to generate a clock signal; and generating monitoring frames according to the clock signal; wherein the clock signal is calibrated in response to at least one of: a first communication signal, transmitted for multiple times from a monitoring system externally coupled to the optical sensor device, is received by the optical sensor device; a data length of the first communication signal transmitted for only one time from the monitoring system externally coupled to the optical sensor device; and, a data length of an encoded data portion of the first communication signal transmitted for only one time.
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公开(公告)号：US20230209021A1
公开(公告)日：2023-06-29
申请号：US18111610
申请日：2023-02-20
Applicant: PixArt Imaging Inc.
Inventor： Chih-Huan Wu , Wen-Han Yao
IPC: H04N7/18 , G08B13/196 , G06T7/246
CPC classification number: H04N7/188 , G08B13/19604 , G06T7/248 , H04N7/183 , G06T2207/30232
Abstract: A method of an image sensor circuit includes: providing an event camera comprising at least one pixel unit; using the event camera to sense at least one current pixel value of the at least one pixel unit to detect whether at least one pixel value changes; when the at least one pixel value changes, using the event camera to trigger the digital processing circuit when the digital processing circuit is in a power saving mode and transmit information of the at least one pixel value to the digital processing circuit.
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Patent Agency Ranking
公开(公告)号：US11614322B2
公开(公告)日：2023-03-28
申请号：US16881437
申请日：2020-05-22
Applicant: PixArt Imaging Inc.
Inventor： Wen-Han Yao , Wen-Cheng Yen , Han-Chang Lin
Abstract: There is provided an imaging system including a camera and a control host. The camera identifies ambient light intensity and performs trigger event detection in a low power mode. When the camera detects a trigger event in the low power mode, the control host is woken up. The camera also determines an exposure mode according the ambient light intensity and informs the exposure mode to the control host such that an operating mode of the control host after being woken up matches the exposure mode of the camera.
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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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公开(公告)号：US11412169B2
公开(公告)日：2022-08-09
申请号：US17069013
申请日：2020-10-13
Applicant: PixArt Imaging Inc.
Inventor： Wen-Han Yao
IPC: H04N5/378 , H04N5/376 , H04N5/235 , H01L27/148 , H01L27/146
Abstract: There is provided a pixel circuit including a first circuit and a second circuit. The first circuit is used to output a first voltage associated with exposure intensity. The second circuit is used to output a second voltage associated with exposure time interval. The processor multiples the first voltage to a ratio between a reference voltage and the second voltage to obtain an actual light intensity, wherein the reference voltage is a voltage value outputted by the second circuit of a dummy pixel.
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公开(公告)号：US11336870B2
公开(公告)日：2022-05-17
申请号：US17151625
申请日：2021-01-18
Applicant: PixArt Imaging Inc.
Inventor： Wen-Cheng Yen , Wen-Han Yao
IPC: H04N7/18 , G08B13/196 , G06T7/246
Abstract: A smart motion detection device with a determining method includes a memory, a processor, and a sensor array coupled to the memory and the processor. An image captured by the sensor array is processed by the processor. The sensor array is adapted to pre-store the image into the memory when the processor is operated in the sleep mode, and the pre-stored image is transmitted to the processor when the processor is operated in the wakeup mode. The sensor array includes a comparator adapted to generate an alarm signal for switching the processor from the sleep mode to the wakeup mode in accordance with a comparison result of the pre-stored image. The determining method includes the processor analyzing images captured by the sensor array when the sensor array is activated to capture the images, and the processor analyzing images pre-stored inside the memory when the sensor array is not activated.
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公开(公告)号：US11039081B2
公开(公告)日：2021-06-15
申请号：US16513712
申请日：2019-07-17
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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