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1. 发明授权

US06912003B1 Methods of and circuit array for compensating variations induced by temperature strain and manufacture in CMOS video sensors 失效
标题翻译：用于补偿由CMOS视频传感器中的温度应变和制造引起的变化的电路阵列的方法和电路
公开(公告)号：US06912003B1
公开(公告)日：2005-06-28
申请号：US09402109
申请日：1997-10-30
申请人： Uwe Apel , Ulrich Seger , Heinz-Gerd Graf , Udo Postel , Hans-Jörg Schönherr , Armin Armbruster
发明人： Uwe Apel , Ulrich Seger , Heinz-Gerd Graf , Udo Postel , Hans-Jörg Schönherr , Armin Armbruster
IPC分类号： H04N5/361 , H04N5/374 , H04N9/64
CPC分类号： H04N5/361 , H04N5/374
摘要： A method and circuit for compensating variations induced by temperature, strain and manufacturing technology in CMOS video sensors. Using at least two reference CMOS sensors, held at the same temperature level as the CMOS video sensors to be compensated and which are not irradiated, two reference signals are generated whereof one corresponds to a reference dark value whilst the other one, in response to the application of an electric current, corresponds to a reference illumination value. The reference signals are amplified separately of each other. At least one correction value is stored in a memory unit for each CMOS video sensor point to be compensated, such that output signals corrected by FPN (=fixed pattern noise) will be obtained. The FPN-corrected output signals as well as the reference signals obtained are supplied to the A/D converter where the output signals of the CMOS video sensor are compensated and converted into digital signals.
摘要翻译：一种用于补偿CMOS视频传感器温度，应变和制造技术引起的变化的方法和电路。使用至少两个参考CMOS传感器，其保持在与待补偿的CMOS视频传感器相同的温度水平并且不被照射的情况下，产生两个参考信号，其中一个对应于参考暗值，而另一个参考CMOS传感器响应于施加电流对应于参考照明值。参考信号彼此分开放大。对于要补偿的每个CMOS视频传感器点，存储器单元中存储至少一个校正值，使得将获得由FPN校正的输出信号（=固定模式噪声）。将FPN校正的输出信号以及所获得的参考信号提供给A / D转换器，其中CMOS视频传感器的输出信号被补偿并转换为数字信号。

2. 发明授权

US06665011B1 Circuit and method for rapid reading of an image cell 有权
标题翻译：用于快速读取图像单元的电路和方法
公开(公告)号：US06665011B1
公开(公告)日：2003-12-16
申请号：US09147945
申请日：1999-06-08
申请人： Ulrich Seger , Uwe Apel , Bernd Hofflinger , Heinz-Gerd Graf
发明人： Ulrich Seger , Uwe Apel , Bernd Hofflinger , Heinz-Gerd Graf
IPC分类号： H04N5335
CPC分类号： H04N9/045 , H04N5/374
摘要： A circuitry for high-speed reading of a video cell for a video pickup chip including a plurality of such video cells disposed in the form of a two-dimensional array, and a read-out logic designed for imaging a high input signal dynamic volume onto a reduced output signal dynamic volume, wherein the photosensitive element of the video cell is connected to the first main electrode of a first MOS transistor (M0) and to the gate of a second MOS transistor (M1) such that the gate and the other main electrode of the first MOS transistor (M0) are short-circuited and applied to an invariable potential (Vpp) so as to achieve a logarithmic characteristic line, and that an output signal amplifier is connected to the second main electrode of the second MOS transistor (M1). Moreover, a method of high speed reading of this video cell is described. The invention excels itself by the provision that a further MOS transistor (Mr1) of the same charge carrier type, which is connected in parallel with the first MOS transistor (M0), is provided and has a main electrode short-circuited to the first main electrode of the first MOS transistor (M0), and that a reset voltage pulse is applicable to the gate electrode of this further MOS transistor (Mr1).
摘要翻译：一种用于高速读取用于视频拾取芯片的视频单元的电路，包括以二维阵列的形式设置的多个这样的视频单元，以及设计用于将高输入信号动态体积成像到减小的输出信号动态音量，其中视频单元的感光元件连接到第一MOS晶体管（M0）的第一主电极并连接到第二MOS晶体管（M1）的栅极，使得栅极和另一个主体第一MOS晶体管（M0）的电极短路并施加到不变电位（Vpp），以实现对数特性线，并且输出信号放大器连接到第二MOS晶体管的第二主电极（ M1）。此外，描述了该视频单元的高速读取的方法。本发明的优点在于提供了与第一MOS晶体管（M0）并联连接的另一个同样的载流子型的MOS晶体管（Mr1），并且具有与第一主体短路的主电极第一MOS晶体管（M0）的电极，并且复位电压脉冲可应用于该另一MOS晶体管（Mr1）的栅电极。

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