CALIBRATION IN MULTIPLE SLOPE COLUMN PARALLEL ANALOG-TO-DIGITAL CONVERSION FOR IMAGE SENSORS
    2.
    发明申请
    CALIBRATION IN MULTIPLE SLOPE COLUMN PARALLEL ANALOG-TO-DIGITAL CONVERSION FOR IMAGE SENSORS 有权
    用于图像传感器的多个斜坡平行校准模拟数字转换

    公开(公告)号:US20150103220A1

    公开(公告)日:2015-04-16

    申请号:US14573978

    申请日:2014-12-17

    摘要: An apparatus includes analog-to-digital (A/D) conversion circuitry coupled to a pixel array. The A/D conversion circuitry includes a voltage ramp generator and a set of column A/D conversion circuits. The voltage ramp generator generates a single slope voltage ramp in a first state and a multiple slope voltage ramp in a second state. The set of column A/D conversion circuits is coupled with the voltage ramp generator. The apparatus further includes calibration circuitry coupled with the set of column A/D conversion circuits and operable to determine digital calibration data to adjust digital image data. The calibration circuitry provides analog calibration data that spans a calibration range to the set of column A/D conversion circuits instead of the analog image data from the pixel array being provided to the set of column A/D conversion circuits.

    摘要翻译: 一种装置包括耦合到像素阵列的模数(A / D)转换电路。 A / D转换电路包括电压斜坡发生器和一组列A / D转换电路。 电压斜坡发生器产生处于第一状态的单斜坡电压斜坡和处于第二状态的多斜坡电压斜坡。 该列A / D转换电路与电压斜坡发生器耦合。 该装置还包括与一组列A / D转换电路耦合的校准电路,并且可操作以确定数字校准数据以调整数字图像数据。 校准电路提供将校准范围跨越到A / D转换电路组的模拟校准数据,而不是提供给列A / D转换电路的像素阵列的模拟图像数据。

    Calibration in multiple slope column parallel analog-to-digital conversion for image sensors
    3.
    发明授权
    Calibration in multiple slope column parallel analog-to-digital conversion for image sensors 有权
    用于图像传感器的多斜率列并行模数转换的校准

    公开(公告)号:US08994832B1

    公开(公告)日:2015-03-31

    申请号:US14573978

    申请日:2014-12-17

    摘要: An apparatus includes analog-to-digital (A/D) conversion circuitry coupled to a pixel array. The A/D conversion circuitry includes a voltage ramp generator and a set of column A/D conversion circuits. The voltage ramp generator generates a single slope voltage ramp in a first state and a multiple slope voltage ramp in a second state. The set of column A/D conversion circuits is coupled with the voltage ramp generator. The apparatus further includes calibration circuitry coupled with the set of column A/D conversion circuits and operable to determine digital calibration data to adjust digital image data. The calibration circuitry provides analog calibration data that spans a calibration range to the set of column A/D conversion circuits instead of the analog image data from the pixel array being provided to the set of column A/D conversion circuits.

    摘要翻译: 一种装置包括耦合到像素阵列的模数(A / D)转换电路。 A / D转换电路包括电压斜坡发生器和一组列A / D转换电路。 电压斜坡发生器产生处于第一状态的单斜坡电压斜坡和处于第二状态的多斜坡电压斜坡。 该列A / D转换电路与电压斜坡发生器耦合。 该装置还包括与一组列A / D转换电路耦合的校准电路,并且可操作以确定数字校准数据以调整数字图像数据。 校准电路提供将校准范围跨越到A / D转换电路组的模拟校准数据,而不是提供给列A / D转换电路的像素阵列的模拟图像数据。