Imaging device
    1.
    发明申请

    公开(公告)号:US20060170794A1

    公开(公告)日:2006-08-03

    申请号:US11133386

    申请日:2005-05-20

    IPC分类号: H04N5/217

    摘要: A second source follower circuit of a reference voltage generator includes a transistor having the same characteristics as a first source follower circuit of a pixel. Accordingly, the second source follower circuit can generate a second reference voltage according to the change in characteristics of the first source follower circuit. A noise voltage switching circuit outputs a first voltage as a noise voltage to a pixel signal generator when the noise voltage is equal to or lower than the second reference voltage. In a reset state, the noise voltage and the second reference voltage always have a predetermined voltage difference. Therefore, deterioration in image quality can be prevented even when capturing a subject having high brightness. Since a trimming circuit or the like selecting any one of a plurality of reference voltages according to characteristics of a formed transistor becomes unnecessary, the cost of an imaging device can be reduced.

    Data read circuit of solid-state imaging device, imaging apparatus, and data read method for solid-state imaging device
    3.
    发明授权
    Data read circuit of solid-state imaging device, imaging apparatus, and data read method for solid-state imaging device 失效
    固态成像装置的数据读取电路,成像装置和固态成像装置的数据读取方法

    公开(公告)号:US07639290B2

    公开(公告)日:2009-12-29

    申请号:US11138483

    申请日:2005-05-27

    IPC分类号: H04N9/64

    CPC分类号: H04N5/3575 H04N5/378

    摘要: A differential amplifier has a first input terminal to which a voltage of a noise signal of the solid-state imaging device is supplied and a second input terminal to which a voltage of a temporary data signal having the noise signal of the solid-state imaging device superposed thereon is supplied. The differential amplifier inverts an output signal when a magnitude relationship in voltage between the first and second input terminals becomes reverse. A measurement circuit measures a variation amount of a voltage of the second input terminal from when the voltage of the second input terminal begins to vary in a direction to reverse the magnitude relationship to when the output signal of the differential amplifier is inverted, and outputs a measurement result as a digital value indicating a voltage of a real data signal obtained by removing the noise signal from the temporary data signal.

    摘要翻译: 差分放大器具有第一输入端,固态成像器件的噪声信号的电压被提供给该第一输入端;第二输入端,具有固态成像器件的噪声信号的临时数据信号的电压 叠加在其上。 当第一和第二输入端之间的电压的大小关系变为反相时,差分放大器反转输出信号。 测量电路测量第二输入端子的电压从第二输入端子的电压开始变化的方向的变化量,以使得与差分放大器的输出信号反相时的幅度关系相反, 测量结果作为数字值,指示通过从临时数据信号中去除噪声信号而获得的实际数据信号的电压。

    Imaging device
    5.
    发明授权
    Imaging device 失效
    成像设备

    公开(公告)号:US07477299B2

    公开(公告)日:2009-01-13

    申请号:US11133386

    申请日:2005-05-20

    IPC分类号: H04N5/217 H04N3/14

    摘要: A second source follower circuit of a reference voltage generator includes a transistor having the same characteristics as a first source follower circuit of a pixel. Accordingly, the second source follower circuit can generate a second reference voltage according to the change in characteristics of the first source follower circuit. A noise voltage switching circuit outputs a first voltage as a noise voltage to a pixel signal generator when the noise voltage is equal to or lower than the second reference voltage. In a reset state, the noise voltage and the second reference voltage always have a predetermined voltage difference. Therefore, deterioration in image quality can be prevented even when capturing a subject having high brightness. Since a trimming circuit or the like selecting any one of a plurality of reference voltages according to characteristics of a formed transistor becomes unnecessary, the cost of an imaging device can be reduced.

    摘要翻译: 参考电压发生器的第二源极跟随器电路包括具有与像素的第一源极跟随器电路相同的特性的晶体管。 因此,第二源极跟随器电路可以根据第一源极跟随器电路的特性的变化产生第二参考电压。 当噪声电压等于或低于第二参考电压时,噪声电压切换电路将作为噪声电压的第一电压输出到像素信号发生器。 在复位状态下,噪声电压和第二参考电压总是具有预定的电压差。 因此,即使在拍摄具有高亮度的被摄体的情况下也能够防止图像质量的劣化。 由于不需要根据形成的晶体管的特性选择多个参考电压中的任何一个的微调电路等,因此可以降低成像装置的成本。

    Differential comparator, analog/digital conversion apparatus and imaging apparatus
    8.
    发明申请
    Differential comparator, analog/digital conversion apparatus and imaging apparatus 有权
    差分比较器,模拟/数字转换装置和成像装置

    公开(公告)号:US20060001750A1

    公开(公告)日:2006-01-05

    申请号:US11008292

    申请日:2004-12-10

    CPC分类号: H04N5/335 H03M1/0607

    摘要: A differential comparator which outputs positive and/or negative logic signals to an output terminal according to the coincidence/non-coincidence of first and second input signal levels inputted to first and second input terminals, respectively, comprises an offset cancel function composed of an offset capacitor device provided on the differential comparator side of the first and second terminals, a first switch for short-circuiting the first and second input terminals in such a way as to form a closed loop including the offset capacitor device, and a second switch for short-circuiting both the connection point between the offset capacitor device and the differential comparator, and the output terminal.

    摘要翻译: 根据输入到第一和第二输入端的第一和第二输入信号电平的一致/非重合分别将正和/或负逻辑信号输出到输出端的差分比较器包括偏移消除函数, 设置在所述第一和第二端子的差分比较器侧的电容器装置,用于使所述第一和第二输入端子短路以形成包括所述偏移电容器装置的闭环的第一开关,以及用于短路的第二开关 - 电容偏置电容器件和差分比较器之间的连接点以及输出端子。

    Current stabilization circuit, current stabilization method, and solid-state imaging apparatus
    10.
    发明申请
    Current stabilization circuit, current stabilization method, and solid-state imaging apparatus 有权
    电流稳定电路,电流稳定方法和固态成像装置

    公开(公告)号:US20060001476A1

    公开(公告)日:2006-01-05

    申请号:US10991400

    申请日:2004-11-19

    IPC分类号: H03B1/00

    CPC分类号: G05F3/262

    摘要: A circuit for stabilizing an electric current includes a constant voltage supplying circuit configured to supply a constant voltage, and a current generating circuit coupled to the constant voltage supplying circuit to generate an electric current based on a predetermined voltage responsive to the constant voltage and to adjust a current amount of the electric current to a predetermined amount by feedback control based on comparison of the predetermined voltage with a voltage appearing across a predetermined resistance responsive to the electric current.

    摘要翻译: 用于稳定电流的电路包括被配置为提供恒定电压的恒压供应电路和耦合到恒压供应电路的电流产生电路,以响应于恒定电压产生基于预定电压的电流并且调整 通过基于预定电压与响应于电流的预定电阻上出现的电压的反馈控制,将电流的电流量设定为预定量。