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1. 发明授权

US5113077A Radiation detection circuit having a signal integrating capacitor, and a data aquisition system for an X-ray scanner including such circuit 失效
标题翻译：具有信号积分电容器的辐射检测电路和包括这种电路的X射线扫描仪的数据采集系统
公开(公告)号：US5113077A
公开(公告)日：1992-05-12
申请号：US588718
申请日：1990-09-27
申请人： Toshihiko Shimizu , Masao Hotta , Atsushi Moritani
发明人： Toshihiko Shimizu , Masao Hotta , Atsushi Moritani
IPC分类号： A61B6/03 , G01T1/17 , G01T1/20 , G01T1/29
CPC分类号： G01T1/17 , G01T1/2985
摘要： A radiation detection circuit integrates output currents of a plurality of X-ray CT scanner radiation detectors, which are combinations of scintillators and photodiodes, during a short period to convert them to charge information in order to collect data for reproducing a tomogram. A current amplifier is connected to the output terminal of the photo-diode, and an output current of the current amplifier is charged in an integration capacitor. In this manner, the radiation detection circuit enables reduction of the measurement period.
摘要翻译：辐射检测电路在短时间内将作为闪烁体和光电二极管的组合的多个X射线CT扫描仪辐射检测器的输出电流进行积分，以将其转换为电荷信息，以便收集用于再现断层图像的数据。电流放大器连接到光电二极管的输出端，并且电流放大器的输出电流在积分电容器中充电。以这种方式，辐射检测电路能够减少测量周期。

2. 发明授权

US4578646A Integral-type small signal input circuit 失效
标题翻译：积分型小信号输入电路
公开(公告)号：US4578646A
公开(公告)日：1986-03-25
申请号：US577972
申请日：1984-02-08
申请人： Kenji Maio , Atsushi Moritani
发明人： Kenji Maio , Atsushi Moritani
IPC分类号： G06G7/186 , H05G1/08 , H03K5/01
CPC分类号： H05G1/08 , G06G7/1865
摘要： An integral-type small signal input circuit having a Miller integrator is adapted to perform cyclically an integrating operation, a resetting operation and an input offset current compensating operation. An input offset current compensation circuit which forms a feedback circuit of the amplifier in the Miller integrator is arranged to supply a compensation current to the amplifier for canceling the input offset current during the compensating operation and to supply the held compensation current to the amplifier during the integrating operation. During the compensation period, a low-pass filter which blocks sinusoidal noise components in the input signal is connected to the input of the integrator so that the held compensation current is not affected by the noise components.
摘要翻译：具有米勒积分器的积分型小信号输入电路适于循环执行积分运算，复位操作和输入偏移电流补偿操作。在Miller积分器中形成放大器的反馈电路的输入偏移电流补偿电路被布置成在补偿操作期间向放大器提供补偿电流以消除输入偏移电流，并且在该期间向保持的补偿电流提供保持的补偿电流集成操作。在补偿期间，将输入信号中的正弦噪声成分阻塞的低通滤波器连接到积分器的输入端，使保持的补偿电流不受噪声成分的影响。

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