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method for the enterprises of a beeldop taker.

机译:beeldop使用者的企业的方法。

摘要

During the integration time, the voltage applied to the electrodes of a charge coupled device (CCD) imager under which radiation induced charges are to be collected is changed as a function of time. To obtain dark current reduction, a linear ramp may be employed which starts at a relatively low voltage level. The lower average voltage employed to collect charge signals results in lower dark currents (especially at locations where defects are present) but does not appreciably change the number of radiation induced charge carriers which are collected. To obtain increased dynamic range, the voltage may be changed in non-linear fashion, for example, increased in discrete steps or increased by changing the slope of the voltage waveform. Similar techniques may be employed for gamma ( gamma ) correction.
机译:在积分时间内,施加到电荷耦合器件(CCD)成像器的电极上的电压随时间变化,在该电极下要收集辐射感应的电荷。为了获得暗电流减小,可以采用从相对较低的电压电平开始的线性斜坡。用于收集电荷信号的较低平均电压会导致较低的暗电流(特别是在存在缺陷的位置),但不会明显改变所收集的辐射感应电荷载流子的数量。为了获得增加的动态范围,可以以非线性方式改变电压,例如,以不连续的步长增加电压,或者通过改变电压波形的斜率来增加电压。可以将类似技术用于伽玛(gamma)校正。

著录项

  • 公开/公告号NL7605367A

    专利类型

  • 公开/公告日1976-11-23

    原文格式PDF

  • 申请/专利权人 RCA CORPORATION TE NEW YORK.;

    申请/专利号NL19760005367

  • 发明设计人

    申请日1976-05-20

  • 分类号H04N3/14;

  • 国家 NL

  • 入库时间 2022-08-23 00:49:07

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