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    • 5. 发明授权
    • Color readout system for an active pixel image sensor
    • 用于有源像素图像传感器的彩色读出系统
    • US06233013B1
    • 2001-05-15
    • US08956613
    • 1997-10-23
    • Paul A. HosierJagdish C. TandonScott L. Tewinkle
    • Paul A. HosierJagdish C. TandonScott L. Tewinkle
    • H04N5335
    • H04N5/3537H04N5/3535H04N5/3745H04N9/045
    • A full-color scanning array uses CMOS active pixel cells, or photogates, as photosensors. A set of photogates, each photogate being specifically filtered for one primary color, is associated with a common node. A clearing gate downstream of the common node applies a relatively high potential to a selected photogate, for the purpose of clearing any charge from the photogate. In this way, the integration time for the photogate can be started at a precise time, and the effective exposure time of each photogate can thereby be precisely controlled. Alternately, one of the set of photogates can be repeatedly cleared without a signal being read therefrom, allowing the array to operate in a monochrome mode.
    • 全彩扫描阵列使用CMOS有源像素单元或照相门,作为光电传感器。 一组摄影门,每一个专门针对一种原色过滤的摄影门,与公共节点相关联。 公共节点下游的清除门对选定的光栅施加相对较高的电位,目的是清除光栅的任何电荷。 以这种方式,可以在精确的时间开始光栅的积分时间,从而可以精确地控制每个光栅的有效曝光时间。 或者,可以在没有从其读取信号的情况下重复地清除该组相机中的一个,从而允许阵列以单色模式操作。