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    • 34. 发明授权
    • Radiation detector
    • 辐射检测器
    • US4492869A
    • 1985-01-08
    • US313171
    • 1981-10-20
    • Atsushi SuzukiHiromichi YamadaYoko UchidaHideki KohnoMinoru Yoshida
    • Atsushi SuzukiHiromichi YamadaYoko UchidaHideki KohnoMinoru Yoshida
    • A61B6/00G01T1/164G01T1/20
    • G01T1/2002G01T1/2018
    • In a radiation detector having a radiation-stimulated light emitting scintillator and a photodetector for receiving the light emission from the scintillator, the scintillator is formed of a layer of phosphor particles and a light scattering layer is provided in an optical path between the phosphor particle layer and the photodetector. Light generated in the surface of the scintillator is scattered and absorbed by the light scattering layer in some degree so that the reduced quantity of light incident upon the photodetector lowers the output of the photodetector. This effect is balanced with the lowering of the photodetector output due to the absorption and scattering of light generated at the inner parts of the scintillator and further removes anisotropic light emission. As a result, signal-to-noise ratio is greatly improved.A shielding layer between the scintillator and photodetector prevents secondary radiation such as scattered and fluorescent radiation from reaching the photodetector. The shielding layer can also serve as the scattering layer.
    • 在具有辐射激发的发光闪烁体的辐射检测器和用于接收来自闪烁体的发光的光检测器中,闪烁体由荧光体颗粒层形成,并且光散射层设置在荧光体颗粒层 和光电检测器。 在闪烁器表面产生的光在一定程度上被光散射层散射和吸收,使得入射到光电检测器上的光的减少使得光电检测器的输出降低。 由于在闪烁器的内部部分产生的光的吸收和散射,光电检测器输出的降低会使这种效果平衡,并进一步消除各向异性发光。 结果,信噪比大大提高。 闪烁体和光电检测器之间的屏蔽层防止二次辐射如散射和荧光辐射到达光电探测器。 屏蔽层也可以用作散射层。
    • 39. 发明申请
    • MICROCONTROLLER, CONTROL SYSTEM AND DESIGN METHOD OF MICROCONTROLLER
    • 微控制器,微控制器的控制系统和设计方法
    • US20090249271A1
    • 2009-10-01
    • US12388861
    • 2009-02-19
    • Hiromichi YamadaNobuyasu KanekawaTeruaki Sakata
    • Hiromichi YamadaNobuyasu KanekawaTeruaki Sakata
    • G06F17/50G06F1/12
    • G06F11/1641G06F11/1679Y02T10/82
    • Two data processing units having the same function, one of which is used for a master and the other for comparison, are provided, control of a circuit unit is performed by the master, the master data processing unit and the circuit unit are operated in synchronization with a first clock signal, the second data processing unit is operated in synchronization with a second clock signal having the same cycle and different phase from the first clock signal, and processing results of both the data processing units are compared in a comparison circuit. Flip flops are disposed on a signal path from the circuit unit to the comparison data processing unit and on a signal path from the master data processing unit to the comparator, and both the first and second clock signals are used for latch clocks of the flip flops in accordance with input signals thereof.
    • 提供具有相同功能的两个数据处理单元,其中一个用于主机,另一个用于比较,电机单元的控制由主机执行,主数据处理单元和电路单元同步操作 利用第一时钟信号,第二数据处理单元与具有与第一时钟信号相同的周期和不同相位的第二时钟信号同步地操作,并且在比较电路中比较两个数据处理单元的处理结果。 触发器设置在从电路单元到比较数据处理单元和从主数据处理单元到比较器的信号路径的信号路径上,并且第一和第二时钟信号都用于触发器的锁存时钟 根据其输入信号。