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2. 发明公开

EP2037675A1 Sensor apparatus 有权
标题翻译： Sensorvorrichtung
公开(公告)号：EP2037675A1
公开(公告)日：2009-03-18
申请号：EP08021405.9
申请日：2005-05-02
申请人： HAMAMATSU PHOTONICS K. K.
发明人： Mizuno, Seiichiro Hamamatsu Photonics K.K. , Funakoshi, Haruhiro Hamamatsu Photonics K.K.
IPC分类号： H04N5/335 , G08C13/00
CPC分类号： H04N5/357 , H04N5/3742 , H04N5/378
摘要： The present invention relates to a sensor apparatus having a structure capable of obtaining digital values of signal components with a high accuracy using an A/D conversing circuit with the outputted digital value thereof having a small number of expressive bits. In the sensor apparatus, a voltage value corresponding to the amount of incident light to a photodiode is held by a holding circuit through an integrating circuit and a CDS circuit. Meanwhile, a voltage value corresponding to the amount of incident light to an adjacent photodiode is held by another holding circuit through an integrating circuit and a CDS circuit. The voltage values held by the respective different holding circuits are inputted to a subtracting circuit through different paths. The subtracting circuit outputs a voltage value corresponding to the difference between the two inputted voltage values. In an A/D converting section, the difference voltage outputted from the subtracting circuit is converted into a digital value.
摘要翻译：本发明涉及具有能够以具有少量表示位的输出数字值的A / D转换电路以高精度获得信号分量的数字值的结构的传感器装置。在传感器装置中，通过积分电路和CDS电路由保持电路保持与光电二极管的入射光量对应的电压值。同时，与通过积分电路和CDS电路的另一个保持电路保持与相邻光电二极管的入射光量相对应的电压值。由各个不同的保持电路保持的电压值通过不同的路径输入到减法电路。减法电路输出对应于两个输入电压值之差的电压值。在A / D转换部分中，将从减法电路输出的差分电压转换为数字值。

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