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    • 1. 发明授权
    • Scintigram display apparatus with multilevel analysis and
two-dimensional interpolation
    • Scintigram显示设备,具有多级分析和二维插值
    • US3947684A
    • 1976-03-30
    • US510055
    • 1974-09-27
    • Jun IkebeOscar Akio Nawa
    • Jun IkebeOscar Akio Nawa
    • G01T1/166G01T1/20
    • G01T1/1663
    • In the isocount scintiscanning, the detector probe is scanned over the object plane such that it is stopped at each observation point during the time T necessary for the input pulses to reach a preset value N. The count rate R = N/T is then calculated electronically and the two-dimensional array of said count rate R.sub.i,j, output of said isocount scanner, is read in the memory of the display system, which is the subject to the present patent. These data are read out from said memory in synchronism with the television horizontal sweep signal; each value of count rate R.sub.i,j is compared to a reference slice level a.sub.k and if R.sub.i,j .gtoreq.a.sub.k, black is assigned to the corresponding picture element on the screen; if R.sub.i,j
    • 在异地闪烁扫描中,检测器探头在对象平面上扫描,使得它在输入脉冲达到预设值N所需的时间T期间在每个观察点处停止。然后计算计数率R = N / T 电子地将所述计数速率Ri,j的输出的二维阵列读入显示系统的存储器,这是本专利的主题。 这些数据与电视水平扫描信号同步地从所述存储器读出; 将计数速率Ri,j的每个值与参考限幅电平ak进行比较,并且如果Ri,j> / = ak,则将黑色分配给屏幕上的相应图像元素; 如果Ri,j