Solid state image pickup apparatus removing noise from the photoelectric
converted signal
    2.
    发明授权
    Solid state image pickup apparatus removing noise from the photoelectric converted signal 失效
    固态摄像装置从光电变换信号中去除噪声

    公开(公告)号:US5771070A

    公开(公告)日:1998-06-23

    申请号:US705002

    申请日:1996-08-29

    摘要: A solid state image pickup apparatus for removing noise includes a plurality of photoelectric transducer cells, and first and second switch circuitry. Signal readout lines are provided for reading out signals from the plurality of transducer cells. A plurality of first capacitors, each connected to one of the signal readout lines through the first switch circuitry, are provided for selectively storing first signals read out through the signal lines and the first switch circuitry after a predetermined accumulation period. A plurality of second capacitors, each connected to one of the signal read out lines through the second switch circuitry, are provided for selectively storing second signals corresponding to dark current signals read out through the signal read out lines and the second switch circuitry. Output circuitry is provided for cancelling dark current signals included in all of the first signals by subtracting each second signal from a corresponding first signal, and for outputting all of the first signals from which the dark current signals are cancelled.

    摘要翻译: 用于去除噪声的固态图像拾取装置包括多个光电换能器单元以及第一和第二开关电路。 信号读出线被提供用于从多个换能器单元读出信号。 通过第一开关电路连接到信号读出线之一的多个第一电容器被提供用于在预定的累积周期之后选择性地存储通过信号线和第一开关电路读出的第一信号。 提供了多个第二电容器,每个第二电容器通过第二开关电路连接到一个信号读出线路,用于选择性地存储对应于通过读出的信号线和第二开关电路读出的暗电流信号的第二信号。 提供输出电路,用于通过从对应的第一信号中减去每个第二信号,以及输出暗电流信号被消除的所有第一信号来消除包括在所有第一信号中的暗电流信号。

    Solid state image pickup apparatus
    3.
    发明授权
    Solid state image pickup apparatus 失效
    固态摄像装置

    公开(公告)号:US06747699B2

    公开(公告)日:2004-06-08

    申请号:US09040275

    申请日:1998-03-18

    IPC分类号: H04N314

    摘要: A solid state image pickup device includes light-receiving circuitry having a plurality of light-receiving cells arranged in a matrix. Apparatus is provided for reading and storing electrical signals output by the light-receiving circuitry, and includes (1) a first memory for reading bright signals out of the light-receiving cells arranged in a row for storing the bright signals for a horizontal scanning period, (2) a second memory for reading dark signals out of the light-receiving cells arranged in the row for storing the dark signal for the horizontal scanning period, and (3) a readout circuit for reading the bright and dark signals stored in the first and second memories simultaneously. A removing circuit is provided for removing fixed pattern noise by simultaneously processing the bright and dark current signals read out from the first and second memories. Preferably, this removing circuit comprises a differential amplifier. Also, the light receiving cells and the reading and storing apparatus are preferably provided on a single semiconductor substrate.

    摘要翻译: 固态图像拾取装置包括具有以矩阵形式布置的多个光接收单元的光接收电路。 提供了用于读取和存储由光接收电路输出的电信号的装置,并且包括:(1)第一存储器,用于从布置在一行中的光接收单元读出亮信号,用于存储水平扫描周期中的亮信号 ,(2)第二存储器,用于从布置在该行中的用于存储用于水平扫描周期的暗信号的行中的光接收单元读出暗信号,以及(3)读出电路,用于读取存储在水平扫描周期中的明暗信号 第一和第二存储器同时。 提供去除电路,用于通过同时处理从第一和第二存储器读出的亮和暗电流信号来消除固定图案噪声。 优选地,该去除电路包括差分放大器。 此外,光接收单元和读取存储装置优选地设置在单个半导体基板上。

    Solid state image pickup apparatus for reducing noise
    4.
    发明授权
    Solid state image pickup apparatus for reducing noise 失效
    用于降低噪声的固态图像拾取装置

    公开(公告)号:US5737016A

    公开(公告)日:1998-04-07

    申请号:US512017

    申请日:1995-08-07

    摘要: Solid state image pickup apparatus for removing noise includes a plurality of photoelectric transducer elements for converting incident light into electrical signals, each of the transducer elements having a signal fluctuation. Control circuitry is provided having a first mode for reading out from each transducer element a first signal corresponding to a signal component and a noise component caused by the fluctuation. The control circuitry has a second mode for reading out from each transducer element a second signal corresponding to the noise component caused by the fluctuation, the first and second signals being read out in the same manner from each transducer element. Amplification circuitry is provided for amplifying the first and second signals, the amplification circuitry including a plurality of amplifiers each amplifier being coupled to a respective one of the plurality of transducer elements. Processing circuitry is provided for processing the first and second signals from the plurality of transducer elements, said processing circuitry including a common capacitor having an input side selectably connected to receive the first signal and the second signal, the capacitor having an output side selectably connected to a fixed level and a floating level.

    摘要翻译: 用于去除噪声的固态图像拾取装置包括用于将入射光转换成电信号的多个光电换能器元件,每个换能器元件具有信号波动。 提供控制电路,其具有用于从每个换能器元件读出对应于由波动引起的信号分量和噪声分量的第一信号的第一模式。 控制电路具有从每个换能器元件读出对应于由波动引起的噪声分量的第二信号的第二模式,第一和第二信号以与每个换能器元件相同的方式读出。 提供放大电路用于放大第一和第二信号,放大电路包括多个放大器,每个放大器耦合到多个换能器元件中的相应一个。 提供处理电路用于处理来自多个换能器元件的第一和第二信号,所述处理电路包括公共电容器,该公共电容器具有可选择地连接以接收第一信号和第二信号的输入端,该电容器具有可选地连接到 固定水平和浮动水平。

    Apparatus for eliminating noise in a solid-state image pickup device
    6.
    发明授权
    Apparatus for eliminating noise in a solid-state image pickup device 失效
    用于消除固态图像拾取装置中的噪声的装置

    公开(公告)号:US4914519A

    公开(公告)日:1990-04-03

    申请号:US96534

    申请日:1987-09-14

    摘要: A solid state image pickup apparatus having a selector for selecting a plurality of sensor outputs through predetermined circuits includes a difference processing circuit for calculating a difference between a selected sensor signal and a reference signal selected through the same predetermined circuit as that of the selected sensor signal. The difference processing circuit includes a first holding circuit for holding the sensor signal, a second holding circuit for holding the selected reference signal, and a circuit for receiving the output signals from the first and second holding circuits and outputting a signal corresponding to a difference therebetween.

    摘要翻译: 具有通过预定电路选择多个传感器输出的选择器的固态图像拾取装置包括差分处理电路,用于计算所选择的传感器信号与通过与所选择的传感器信号相同的预定电路选择的参考信号之间的差值 。 差分处理电路包括用于保持传感器信号的第一保持电路,用于保持所选择的参考信号的第二保持电路,以及用于接收来自第一和第二保持电路的输出信号的电路,并输出与其之间的差异的信号 。

    Scanning circuit outputting scanning pulse signals of two or more phases
    7.
    发明授权
    Scanning circuit outputting scanning pulse signals of two or more phases 失效
    扫描电路输出两相以上的扫描脉冲信号

    公开(公告)号:US4958085A

    公开(公告)日:1990-09-18

    申请号:US261264

    申请日:1988-10-24

    IPC分类号: G11C19/18 G11C19/28 H03K5/15

    摘要: There is disclosed a scanning circuit composed of plural stages of unit circuit for outputting scanning pulses of two or more phases in succession from the unit circuits according to multiphase driving pulses. The scanning circuit is provided with set circuits for setting the unit circuits at a predetermined state and a switch circuit for activating the set circuit of a preceding unit circuit in response to the scanning pulse. The switch circuits are activated by driving pulses different from the multiphase driving pulses.