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    • 3. 发明授权
    • Imaging system and imaging device
    • 成像系统和成像装置
    • US08969771B2
    • 2015-03-03
    • US13504471
    • 2010-12-20
    • Yasuji IkedaHiroki HiyamaKazuo Yamazaki
    • Yasuji IkedaHiroki HiyamaKazuo Yamazaki
    • H01L27/146H04N5/378H03M1/06H03M1/16H03M1/54
    • H04N5/378H03M1/0607H03M1/162H03M1/54
    • An imaging system includes an A/D converter including a holding unit holding a pixel signal as a voltage level, a comparator comparing the voltage level held with a reference level, a circuit capable of changing the voltage level so as to approach the reference level at first and second rates, wherein the voltage level is changed at the first rate to determine higher bits in accordance with inversion of a relationship between the reference level and the voltage level, after that, the voltage level is changed at the second rate to determine lower bits in accordance with inversion of the relationship between the reference level and the voltage level, and an adjusting unit which adjusts the voltage level during a period until the voltage level is changed at the second rate after determination of the higher bits so that the lower bits and the voltage level hold a linear relationship.
    • 一种成像系统包括:A / D转换器,其包括保持像素信号作为电压电平的保持单元,将保持的电压电平与基准电平进行比较的比较器,能够改变电压电平以便接近基准电平的电路 第一和第二速率,其中电压电平以第一速率改变以根据参考电平和电压电平之间的关系的反转来确定较高位,之后,以第二速率改变电压电平以确定较低的电平 根据参考电平和电压电平之间的关系的反转,调整单元,以及调整单元,其在确定较高位之后调整电压电平,直到电压电平以第二速率改变,使得较低位 并且电压电平保持线性关系。
    • 10. 发明授权
    • Photoelectric conversion apparatus and contact-type image sensor
    • 光电转换装置和接触式图像传感器
    • US07889254B2
    • 2011-02-15
    • US12175566
    • 2008-07-18
    • Tetsunobu KochiKazuo YamazakiHiraku Kozuka
    • Tetsunobu KochiKazuo YamazakiHiraku Kozuka
    • H04N3/14H04N5/335H04N1/46H04N1/04H04N1/40G06K7/00H01L27/00
    • H04N5/3765H04N5/3692H04N5/37452
    • To prevent such a situation that a signal from a pixel in a dark state is output at a level shifted from an originally set level to deteriorate an image quality, and to improve the image quality. A photoelectric conversion apparatus according to the present invention includes: a plurality of photoelectric conversion elements; a plurality of amplifying units for amplifying a signal in accordance with a photo-carrier generated in the photoelectric conversion elements; a plurality of signal holding units for holding output signals from the amplifying units through a plurality of switch units; and a control signal supplying unit for supplying a control signal to the switch units through a control line, in which the control line is sequentially connected to the plurality of switch units and has both ends connected to the control signal supplying units, or a change rate with time of an amplitude of a signal held by the signal holding units is set lower than a change rate with time of am amplitude of the control signal at the time of turning off the switch units.
    • 为了防止来自暗态的像素的信号以从初始设定的电平移位的电平输出,使图像质量劣化,并且提高图像质量。 根据本发明的光电转换装置包括:多个光电转换元件; 多个放大单元,用于根据在光电转换元件中产生的光载流子放大信号; 多个信号保持单元,用于通过多个开关单元保持来自放大单元的输出信号; 以及控制信号提供单元,用于通过控制线将控制信号提供给开关单元,其中控制线顺序地连接到多个开关单元并且两端连接到控制信号提供单元,或者变化率 将由信号保持单元保持的信号的幅度的时间设定为低于关闭开关单元时的控制信号的幅度随时间的变化率。