Photoelectric conversion apparatus, driving method and x-ray image pickup apparatus using the same
    17.
    发明授权
    Photoelectric conversion apparatus, driving method and x-ray image pickup apparatus using the same 失效
    光电转换装置,驱动方法和使用其的x射线摄像装置

    公开(公告)号:US06476867B1

    公开(公告)日:2002-11-05

    申请号:US08717628

    申请日:1996-09-23

    IPC分类号: H04N5335

    CPC分类号: H04N5/32

    摘要: In order to realize a photoelectric conversion apparatus capable of easily switching a mode requiring a wide dynamic range in obtaining a motion image and a mode requiring a reduction in noise in obtaining a still image, a mode switching means is used, when a refresh operation is performed for each photoelectric conversion element, to switch between a mode of setting the potential of one electrode of the photoelectric conversion element to be higher than the potential of the other electrode, and a mode of setting the potential of one electrode of the photoelectric conversion element to be lower than the potential of the other electrode, thereby arbitrarily changing the refresh voltage. With this operation, desired photoelectric conversion signals for a motion image and a still image can be obtained.

    摘要翻译: 为了实现能够容易地切换在获得运动图像时需要宽动态范围的模式的光电转换装置以及在获得静止图像时需要降低噪声的模式,则使用模式切换装置,当刷新操作为 对于每个光电转换元件执行,以在将光电转换元件的一个电极的电位设置为高于另一个电极的电位的模式之间切换,以及设置光电转换元件的一个电极的电位的模式 低于另一个电极的电位,从而任意地改变刷新电压。 通过该操作,可以获得用于运动图像和静止图像的期望的光电转换信号。

    Photosensor and image reading device with improved correction means for
signal correction and image reading method
    18.
    发明授权
    Photosensor and image reading device with improved correction means for signal correction and image reading method 失效
    光传感器和图像读取装置,具有改进的校正装置,用于信号校正和图像读取方法

    公开(公告)号:US5272548A

    公开(公告)日:1993-12-21

    申请号:US534262

    申请日:1990-06-07

    摘要: A photosensor with improved correction of image signals has a first photosensor portion including a plurality of photoelectric converting devices for reading an object and providing image signals thereof. A second photosensor portion includes a plurality of photoelectric converting devices and provides reference signals from light reflected from a reference member, or light received directly from a light source. Correction circuitry corrects the image signals from the first photosensor portion in accordance with the reference signals output from the second photosensor portion. Preferably, the photoelectric converting devices of the first and second photosensor portions are arranged in adjacent, parallel lines on the same substrate. Preferably, reference signals from the converting devices of the second photosensor are used by the correction circuitry to correct the electrical signals from substantially adjacent converting devices of the first photosensor portion. A single converting device of the second photosensor portion may be used to correct either one or more of the converting devices of the first photosensor portion.

    摘要翻译: 具有改进的图像信号校正的光传感器具有第一光传感器部分,其包括用于读取对象并提供其图像信号的多个光电转换装置。 第二光传感器部分包括多个光电转换装置,并且提供从参考部件反射的光的参考信号,或直接从光源接收的光。 校正电路根据从第二光电传感器部分输出的参考信号来校正来自第一光电传感器部分的图像信号。 优选地,第一和第二光电传感器部分的光电转换装置布置在同一基板上的相邻的平行线上。 优选地,校正电路使用来自第二光电传感器的转换装置的参考信号来校正来自第一光电传感器部分的基本上相邻的转换装置的电信号。 可以使用第二光电传感器部分的单个转换装置来校正第一光电传感器部分的一个或多个转换装置。