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    • 10. 发明申请
    • IMAGING SYSTEM AND IMAGING DEVICE
    • 成像系统和成像装置
    • WO2011086845A1
    • 2011-07-21
    • PCT/JP2010/073641
    • 2010-12-20
    • CANON KABUSHIKI KAISHAIKEDA, YasujiHIYAMA, HirokiYAMAZAKI, Kazuo
    • IKEDA, YasujiHIYAMA, HirokiYAMAZAKI, Kazuo
    • H04N5/378H03M1/06H03M1/16H03M1/54
    • 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;比较器,将保持的电压电平与参考电平进行比较;电路,能够改变电压电平以接近基准电平; 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。