Current stabilization circuit, current stabilization method, and solid-state imaging apparatus
    1.
    发明授权
    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:US07218166B2

    公开(公告)日:2007-05-15

    申请号:US10991400

    申请日:2004-11-19

    IPC分类号: G05F1/10

    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。

    Current stabilization circuit, current stabilization method, and solid-state imaging apparatus
    2.
    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。

    Imaging device
    4.
    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.

    Imaging device
    8.
    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。