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公开(公告)号：US20210218913A1
公开(公告)日：2021-07-15
申请号：US17215729
申请日：2021-03-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhaolei Xiao , Jiantong Zhou , Yuntan Fang , Shan Gao , Zhenhua Wu , Jing Xiao
Abstract: This application provides a dynamic vision sensor. The sensor converts an optical signal into an electrical signal by using a photoelectric conversion unit, to generate a photovoltage; performs second-order difference on the photovoltage by using a second-order differential circuit; and generates a second-order event signal based on a result of second-order difference. A camera including the sensor can generate an image based on the second-order event signal, where the image represents a change of a light change speed.
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公开(公告)号：US11310445B2
公开(公告)日：2022-04-19
申请号：US17215729
申请日：2021-03-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhaolei Xiao , Jiantong Zhou , Yuntan Fang , Shan Gao , Zhenhua Wu , Jing Xiao
Abstract: This application provides a dynamic vision sensor. The sensor converts an optical signal into an electrical signal by using a photoelectric conversion unit, to generate a photovoltage; performs second-order difference on the photovoltage by using a second-order differential circuit; and generates a second-order event signal based on a result of second-order difference. A camera including the sensor can generate an image based on the second-order event signal, where the image represents a change of a light change speed.
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