发明名称 |
Column readout circuit with increased signal range for CMOS image sensor |
摘要 |
<p>A pre-amplifier (column region unit) of a solid-state imaging device includes a pixel-signal controller. The pixel-signal controller, for each vertical signal line, detects the level of each pixel signal independently by a pixel-signal detector on the output side of a pixel-signal amplifier, and sets a gain independently to the pixel-signal amplifier according to the level of the signal. At a subsequent stage of the solid-state imaging device, an analog-to-digital (A/D) converter and a signal extending unit are provided. The A/D converter digitizes a pixel signal, and the digitized pixel signal is corrected by a gain set to the pixel-signal amplifier with reference to a classification signal from the pixel-signal detector, so that the dynamic range of signals of one screen is extended. <IMAGE></p> |
申请公布号 |
EP2271076(A3) |
申请公布日期 |
2011.04.13 |
申请号 |
EP20100008061 |
申请日期 |
2004.11.24 |
申请人 |
SONY CORPORATION |
发明人 |
SUMI, HIROFUMI;NAKAMURA, NOBUO;KAWAHITO, SHOJI |
分类号 |
H01L27/146;H04N5/335;H04N5/217;H04N5/243;H04N5/355;H04N5/369;H04N5/374;H04N5/376;H04N5/378;H04N101/00 |
主分类号 |
H01L27/146 |
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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