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    • 5. 发明授权
    • Solid-state imaging apparatus and method for driving solid-state imaging apparatus
    • 用于驱动固态成像装置的固态成像装置和方法
    • US09232165B2
    • 2016-01-05
    • US13585029
    • 2012-08-14
    • Kazuhiro SaitoHiroki HiyamaTetsuya ItanoKohichi Nakamura
    • Kazuhiro SaitoHiroki HiyamaTetsuya ItanoKohichi Nakamura
    • H01L27/146H04N5/378H04N5/357H03M1/08
    • H04N5/378H03M1/08H03M1/123H03M1/56H04N5/357H04N5/3575
    • A solid-state imaging apparatus includes: a ramp signal generator for generating first and second time-changing ramp signals during first and second analog-to-digital conversion periods, respectively; comparators for comparing a reset signal of a pixel with the first ramp signal during the first analog-to-digital conversion period, and comparing a pixel signal with the second ramp signal during the second analog-to-digital conversion period; and memories for storing, as first and second digital data, count values of counting from a start of changing the first and second ramp signals until an inversion of outputs of the comparators, during the first and second analog-to-digital conversion periods, wherein the ramp signal generator supplies a current from a current generator to a first capacitor element by a sampling and holding operation of a switch, and generates the first and second ramp signals based on the same bias voltage held by the first capacitor element.
    • 固态成像装置包括:斜坡信号发生器,分别在第一和第二模数转换周期期间产生第一和第二时变斜坡信号; 比较器,用于在第一模数转换周期期间比较像素的复位信号和第一斜坡信号,以及在第二模数转换周期期间比较像素信号与第二斜坡信号; 以及存储器,用于作为第一和第二数字数据存储从开始改变第一和第二斜坡信号开始的计数值,直到在第一和第二模数转换周期期间比较器的输出反转,其中 斜坡信号发生器通过开关的采样和保持操作将电流从电流发生器提供给第一电容器元件,并且基于由第一电容器元件保持的相同偏置电压产生第一和第二斜坡信号。
    • 7. 发明申请
    • SOLID-STATE IMAGING APPARATUS AND METHOD OF DRIVING THE SAME
    • 固态成像装置及其驱动方法
    • US20130088625A1
    • 2013-04-11
    • US13611476
    • 2012-09-12
    • Koichiro IwataHiroki HiyamaTetsuya ItanoKohichi NakamuraKazuhiro Saito
    • Koichiro IwataHiroki HiyamaTetsuya ItanoKohichi NakamuraKazuhiro Saito
    • H04N5/335
    • H04N5/3658
    • A solid-state imaging apparatus includes: a plurality of pixels arranged in a matrix; a plurality of amplifier circuits each arranged correspondingly to each of columns of the pixels, for amplifying a signal from the pixel; and a current source transistor whose source is supplied with a power source voltage and which supplies the amplifier circuit with a bias current. When the current source transistor is operating in the saturation region, the gate voltage of the current source transistor that is supplied from the bias line is sampled and held. The gate voltage of the current source transistor with respect to the power source voltage is controlled to the sampled voltage, thereby suppressing variation. This suppression can, in turn, suppress occurrence of line noise and a lateral smear due to difference of drop in voltage of a power source line concerning a column circuit on each row.
    • 固态成像装置包括:以矩阵排列的多个像素; 多个放大器电路,每个放大器电路分别对应于每个像素列排列,用于放大来自像素的信号; 以及电流源晶体管,其源极被提供有电源电压并且向放大器电路提供偏置电流。 当电流源晶体管工作在饱和区域时,从偏置线提供的电流源晶体管的栅极电压被采样和保持。 电流源晶体管相对于电源电压的栅极电压被控制为采样电压,从而抑制变化。 这样抑制可以抑制线路噪声的发生和由于与每行上的列电路有关的电源线的电压下降的差异引起的横向拖尾。