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    • 2. 发明授权
    • Method of reducing column fixed pattern noise
    • 减少列固定图案噪声的方法
    • US08830361B2
    • 2014-09-09
    • US13445350
    • 2012-04-12
    • Po-Sheng ChouCalvin Yi-Ping ChaoKuo-Yu ChouHonyih TuYi-Che Chen
    • Po-Sheng ChouCalvin Yi-Ping ChaoKuo-Yu ChouHonyih TuYi-Che Chen
    • H04N5/217H04N3/14H04N5/335H03M1/00
    • H04N5/378G01J1/46H04N5/3658H04N5/37457H04N17/002
    • A method of reducing column fixed pattern noise including calibrating a readout circuit, wherein the readout circuit is electrically connected to at least one programmable gain amplifier and an analog-to-digital converter. Calibrating the readout circuit includes electrically disconnecting the readout circuit from a pixel output and electrically connecting a pixel reset input of the readout circuit to a pixel output signal input of the readout circuit. Calibrating the readout circuit further includes comparing a measured output of the readout circuit to a predetermined value and storing the comparison result in a non-transitory computer readable medium. The method further includes operating the readout circuit, the operating the readout circuit includes receiving a pixel sample signal and outputting a calibrated output based on an operating output and the stored comparison result.
    • 一种降低列固定模式噪声的方法,包括校准读出电路,其中读出电路电连接至至少一个可编程增益放大器和模 - 数转换器。 校准读出电路包括将读出电路与像素输出电断开并将读出电路的像素复位输入电连接到读出电路的像素输出信号输入端。 校准读出电路还包括将读出电路的测量输出与预定值进行比较,并将比较结果存储在非暂时的计算机可读介质中。 所述方法还包括操作所述读出电路,所述读出电路的操作包括接收像素采样信号并基于操作输出和所存储的比较结果输出校准输出。