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公开(公告)号：US20230110124A1
公开(公告)日：2023-04-13
申请号：US18080144
申请日：2022-12-13
发明人： Zhisheng LI , Jia GUO
摘要： An analog-to-digital conversion method, an analog-to-digital converter and an image sensor, are provided. The analog-to-digital conversion method includes a first conversion period and a second conversion period; in the first conversion period and the second conversion period, a first counter and the second counter have different effective clock edges and work in a time-sharing way using the first count clock signal and the second count clock signal respectively; in the second conversion period, count directions of the first counter and the second counter are reversed, and the count results in the first conversion period are used as an initial value of the second conversion period; and the conversion result is output based on the first count result and the second count result.
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公开(公告)号：US12088938B2
公开(公告)日：2024-09-10
申请号：US17940487
申请日：2022-09-08
发明人： Yang Xu , Jia Guo , Zhisheng Li
IPC分类号： H04N25/75 , H04N25/53 , H04N25/71 , H04N25/771
CPC分类号： H04N25/75 , H04N25/53 , H04N25/745 , H04N25/771
摘要： Embodiments of pixel circuit, image sensor, image pickup device and methods for using the same are provided. In an example, the pixel circuit comprises a source module configured to output non-simultaneously a reference signal indicative of a reset level and an electrical signal indicative of incident light, a sampling module comprising a first sampling unit, a second sampling unit and a sampling switch, a first switch module configured to be electrically coupled between the source module and the sampling module, and a second switch module configured to be electrically coupled between the sampling module and a bus.
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公开(公告)号：US11870455B2
公开(公告)日：2024-01-09
申请号：US18080144
申请日：2022-12-13
发明人： Zhisheng Li , Jia Guo
CPC分类号： H03M1/34 , G06F1/04 , G06F7/501 , H03M1/14 , G06F1/0321 , H03M1/56 , H04N25/75 , H04N25/772
摘要： An analog-to-digital conversion method, an analog-to-digital converter and an image sensor, are provided. The analog-to-digital conversion method includes a first conversion period and a second conversion period; in the first conversion period and the second conversion period, a first counter and the second counter have different effective clock edges and work in a time-sharing way using the first count clock signal and the second count clock signal respectively; in the second conversion period, count directions of the first counter and the second counter are reversed, and the count results in the first conversion period are used as an initial value of the second conversion period; and the conversion result is output based on the first count result and the second count result.
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公开(公告)号：US20230007204A1
公开(公告)日：2023-01-05
申请号：US17940487
申请日：2022-09-08
发明人： Yang XU , Jia GUO , Zhisheng LI
IPC分类号： H04N5/378 , H04N5/3745 , H04N5/376 , H04N5/353
摘要： Embodiments of pixel circuit, image sensor, image pickup device and methods for using the same are provided. In an example, the pixel circuit comprises a source module configured to output non-simultaneously a reference signal indicative of a reset level and an electrical signal indicative of incident light, a sampling module comprising a first sampling unit, a second sampling unit and a sampling switch, a first switch module configured to be electrically coupled between the source module and the sampling module, and a second switch module configured to be electrically coupled between the sampling module and a bus.
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