-
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.
-
公开(公告)号：US12184998B2
公开(公告)日：2024-12-31
申请号：US18076392
申请日：2022-12-07
Applicant: PIXART IMAGING INC.
Inventor： Chih-Huan Wu
IPC: H04N5/335 , H04N23/73 , H04N25/51 , H04N25/532
Abstract: There is provided a global shutter sensor including a pixel array and a processor. The pixel array acquires first pixel data corresponding to a first exposure period and second pixel data corresponding to a second exposure period of different pixel regions using time division or spatial division, wherein the first exposure period is shorter than the second exposure period. The processor calculates a difference between (the second exposure period/the first exposure period)×the first pixel data and the second pixel data to obtain parasitic light sensitivity of the different pixel regions, and determines gains and/or exposure periods corresponding to the different pixel regions to compensate the parasitic light sensitivity.
-
公开(公告)号：US20240064416A1
公开(公告)日：2024-02-22
申请号：US17889366
申请日：2022-08-16
Applicant: PixArt Imaging Inc.
Inventor： Chih-Huan Wu
CPC classification number: H04N5/2357 , H04N5/35554 , H04N5/378
Abstract: An optical sensor, for sensing a sensing frame corresponding to a flicker period of ambient light, comprising: a pixel array, configured to perform N times of exposure operations via at least one pixel of the pixel array in N exposure time intervals to generate N sub-frames, wherein a summation of the N exposure time intervals equals to a sensing interval and the sensing interval is less than or identical to a first flicker period. The optical sensor adds the N sub-frames to generate a summing sub-frame. The sensing frame comprises the summing sub-frame. The adding operation can also be performed to digital signals generated from the sub-frames. The influences caused by the fluctuation of ambient light can be neutralized, since the frame or portion of the frame is sensed at least twice at different phases of a single flicked period. By this way, the conventional flicker issue can be improved.
-
Patent Agency Ranking
公开(公告)号：US11871140B2
公开(公告)日：2024-01-09
申请号：US17847183
申请日：2022-06-23
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 ROIs.
-
公开(公告)号：US11792550B2
公开(公告)日：2023-10-17
申请号：US18071477
申请日：2022-11-29
Applicant: PixArt Imaging Inc.
Inventor： Ren-Chieh Liu , Chih-Huan Wu , Yi-Hsien Ko , Han-Chi Liu
IPC: H04N25/772 , H01L27/146
CPC classification number: H04N25/772 , H01L27/14643
Abstract: There is provided a pixel circuit for performing analog operation including a photodiode, a first temporal circuit, a second temporal circuit and an operation circuit. Within a first interval, the photodiode detects first light energy to be stored in the first temporal circuit. Within a second interval, the photodiode detects second light energy to be stored in the second temporal circuit. Within an operation interval, the first temporal circuit outputs a first detection signal having a first pulse width according to the first light energy and outputs a second detection signal having a second pulse width according to the second light energy for being calculated by the operation circuit.
-
公开(公告)号：US11622092B2
公开(公告)日：2023-04-04
申请号：US17376127
申请日：2021-07-14
Applicant: PixArt Imaging Inc.
Inventor： Chih-Huan Wu , Wen-Han Yao
IPC: H04N7/18 , G08B13/196 , G06T7/246
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.
-
公开(公告)号：US20220321828A1
公开(公告)日：2022-10-06
申请号：US17847183
申请日：2022-06-23
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 ROIs.
-
公开(公告)号：US11405581B2
公开(公告)日：2022-08-02
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.
-
-
-
-
-
-
-
Search Results
28
records
(took 0.023 seconds)
