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公开(公告)号：US11568727B2
公开(公告)日：2023-01-31
申请号：US16660829
申请日：2019-10-23
Applicant: Wistron Corporation
Inventor： Hsiang-Min Chan , Yao-Tsung Chang , Yin-Yu Chen , Chuan-Yen Kao , Tsung-Yin Tsou
Abstract: A wearable device and a method of operating the same are provided. The wearable device includes a shoe assembly, a plurality of pressure sensors, a processing circuit and an alarm module. The plurality of pressure sensors are disposed on the shoe assembly and configured to generate a plurality of pressure sensing values. The processing circuit is configured to calculate a center of gravity coordinate according to the plurality of pressure sensing values and coordinates of the plurality of pressure sensors, and generate a determination result according to the center of gravity coordinate. The alarm module is configured to output an alarm signal to perform an alarm function.
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公开(公告)号：US11335123B2
公开(公告)日：2022-05-17
申请号：US16781722
申请日：2020-02-04
Applicant: Wistron Corporation
Inventor： Chuan-Yen Kao , Yao-Tsung Chang , Chih-Yang Hung
IPC: G06V40/16
Abstract: A live facial recognition method includes projecting a given pattern to a subject under recognition; capturing a reflected pattern of the subject under recognition; and detecting whether the subject under recognition is a flat surface according to the reflected pattern. The subject under recognition is determined to be a living subject when the subject under recognition is not a flat surface.
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公开(公告)号：US11615765B2
公开(公告)日：2023-03-28
申请号：US17301389
申请日：2021-04-01
Applicant: Wistron Corporation
Inventor： Yao-Tsung Chang , Chuan-Yen Kao , Yu-Lin Chen
IPC: G09G5/10 , G09G3/34 , G02F1/13357 , G09G3/36
Abstract: A light emission control method is adapted to a direct-lit LED backlight display. The display includes a backlight module, a driving circuit, a detection circuit, and a control circuit. The backlight module includes a first light emission group and a second light emission group. The first light emission group includes a plurality of first LEDs, and the second light emission group includes a plurality of second LEDs. The first LEDs and the second LEDs are in an interleaved arrangement. The driving circuit is activated to selectively drive the first light emission group and the second light emission group to emit light. On detection of an abnormal light-emission status of any of the plurality of LEDs, the detection circuit sends an abnormal signal. The control circuit obtains a shut-down group according to the abnormal signal and actives the driving circuit not to drive the shut-down group to emit light.
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公开(公告)号：US20220230602A1
公开(公告)日：2022-07-21
申请号：US17301389
申请日：2021-04-01
Applicant: Wistron Corporation
Inventor： Yao-Tsung Chang , Chuan-Yen Kao , Yu-Lin Chen
IPC: G09G5/10 , G02F1/13357 , G09G3/36
Abstract: A light emission control method is adapted to a direct-lit LED backlight display. The display includes a backlight module, a driving circuit, a detection circuit, and a control circuit. The backlight module includes a first light emission group and a second light emission group. The first light emission group includes a plurality of first LEDs, and the second light emission group includes a plurality of second LEDs. The first LEDs and the second LEDs are in an interleaved arrangement. The driving circuit is activated to selectively drive the first light emission group and the second light emission group to emit light. On detection of an abnormal light-emission status of any of the plurality of LEDs, the detection circuit sends an abnormal signal. The control circuit obtains a shut-down group according to the abnormal signal and actives the driving circuit not to drive the shut-down group to emit light.
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公开(公告)号：US11315360B2
公开(公告)日：2022-04-26
申请号：US16777514
申请日：2020-01-30
Applicant: Wistron Corporation
Inventor： Yao-Tsung Chang , Chuan-Yen Kao , Chih-Yang Hung
Abstract: A live facial recognition method includes capturing a zoom-out image of a face of a subject under recognition; and detecting a frame outside the face of the subject under recognition on the zoom-out image. The subject under recognition is determined to be a living subject when the zoom-out image includes no frame outside the face.
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Patent Agency Ranking
公开(公告)号：US11126829B2
公开(公告)日：2021-09-21
申请号：US16740311
申请日：2020-01-10
Applicant: Wistron Corporation
Inventor： Chih-Yang Hung , Yao-Tsung Chang , Chuan-Yen Kao
Abstract: A live facial recognition method includes capturing a plurality of images of a face of a subject under recognition; obtaining time-varying data according to the images, the time-varying data representing a periodic variation of facial color of the subject under recognition due to facial vasoconstriction and vasodilation caused by heartbeat; and comparing the time-varying data with a predetermined frequency range. The subject under recognition is determined to be a living subject when the time-varying data is within the predetermined frequency range.
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公开(公告)号：US20210174067A1
公开(公告)日：2021-06-10
申请号：US16777514
申请日：2020-01-30
Applicant: Wistron Corporation
Inventor： Yao-Tsung Chang , Chuan-Yen Kao , Chih-Yang Hung
Abstract: A live facial recognition method includes capturing a zoom-out image of a face of a subject under recognition; and detecting a frame outside the face of the subject under recognition on the zoom-out image. The subject under recognition is determined to be a living subject when the zoom-out image includes no frame outside the face.
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公开(公告)号：US11964189B2
公开(公告)日：2024-04-23
申请号：US17090962
申请日：2020-11-06
Applicant: Wistron Corporation
Inventor： Chuan-Yen Kao , Yao-Tsung Chang , Chih-Yang Hung
IPC: A63B24/00 , A63B21/005 , A63B21/012
CPC classification number: A63B24/0087 , A63B21/005 , A63B21/012 , A63B24/0003 , A63B24/0062 , A63B2024/0093 , A63B2220/13 , A63B2220/30 , A63B2220/50 , A63B2230/045
Abstract: A training device includes a force receiving component, a location detector, a resistance generator, and a controller. The force receiving component moves along a closed trajectory. The location detector is configured to detect a location of the force receiving component in the closed trajectory and to output a location signal. The resistance generator is configured to exert a resistance on the force receiving component. The controller controls the resistance generator to adjust the resistance based on the location signal.
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公开(公告)号：US11903671B2
公开(公告)日：2024-02-20
申请号：US17353797
申请日：2021-06-21
Applicant: Wistron Corporation
Inventor： Yao-Tsung Chang , Yin-Yu Chen , Chuan-Yen Kao
CPC classification number: A61B5/0015 , A61B5/0004 , A61B5/7257 , G01S7/356 , G01S7/412 , G01S13/584 , G01S13/756 , G01S13/825
Abstract: A frequency modulated continuous wave radar system includes at least one identity tag, respectively disposed next to at least one test subject; and a frequency modulated continuous wave radar identity recognition device, including an identity recognition control module, for controlling a test identity tag of the at least one identity tag to be turned on to generate a specific tag reflection signal corresponding to an identity frequency in response to a chirp signal; and a frequency modulated continuous wave radar, for transmitting the chirp signal and receiving at least one reflection signal of the at least one test subject and the specific tag reflection signal in response to the chirp signal, to calculate and determine that the specific tag reflection signal and a specific reflection signal of the at least one reflection signal are corresponding to an adjacent position information. The specific reflection signal is corresponding to test subject information.
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公开(公告)号：US20220080264A1
公开(公告)日：2022-03-17
申请号：US17090962
申请日：2020-11-06
Applicant: Wistron Corporation
Inventor： Chuan-Yen Kao , Yao-Tsung Chang , Chih-Yang Hung
IPC: A63B24/00 , A63B21/012 , A63B21/005
Abstract: A training device includes a force receiving component, a location detector, a resistance generator, and a controller. The force receiving component moves along a closed trajectory. The location detector is configured to detect a location of the force receiving component in the closed trajectory and to output a location signal. The resistance generator is configured to exert a resistance on the force receiving component. The controller controls the resistance generator to adjust the resistance based on the location signal.
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