发明名称 |
A/D CONVERTER USING RAMPED TRANSFER GATE CLOCKS |
摘要 |
<p>An image sensor includes a photosensitive region that accumulates charge corresponding to received incident light; a transfer gate for transferring charge from the photosensitive region; a voltage supply having an increasing voltage over time; a floating diffusion for receiving the charge from the photosensitive region and converting the charge to a voltage; an amplifier for receiving and amplifying a signal from the floating diffusion; a comparator for comparing a voltage from the amplifier to a reference voltage; and a counter for counting clock cycles between initiation of the increasing voltage until a signal is received from the comparator indicating charge transfer from the photosensitive region to the floating diffusion; wherein a digital signal is generated that represents an unfilled capacity of the photosensitive region.</p> |
申请公布号 |
EP2005731(B1) |
申请公布日期 |
2014.04.09 |
申请号 |
EP20070717224 |
申请日期 |
2007.02.07 |
申请人 |
OMNIVISION TECHNOLOGIES, INC. |
发明人 |
XU, WEIZE |
分类号 |
H04N5/365;H04N5/357;H04N5/374;H04N5/3745;H04N5/378 |
主分类号 |
H04N5/365 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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