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1. 发明授权

US3909715A Counting-rate meter 失效
标题翻译：计数器
公开(公告)号：US3909715A
公开(公告)日：1975-09-30
申请号：US40516173
申请日：1973-10-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： ODA MINORU
IPC分类号： G01R23/02
CPC分类号： G01R23/02
摘要： A direct current signal proportional to a measured counting rate flows through first and second diodes or transistors to be converted to corresponding logarithmic voltages. A constant current from a constant current source flows through the second diode or transistor oppositely to the flow of the dc signal. Both diodes or transistors are interconnected to produce a differential voltage between their converted voltages and the constant current from the source is substantially equal in magnitude to a saturated signal current resulting from a counting loss of measured pulses at their high frequency leading to the automatic correction of the counting loss.
摘要翻译：与测量的计数速率成比例的直流信号流经第一和第二二极管或晶体管，以转换成相应的对数电压。来自恒定电流源的恒定电流流过与第二二极管或晶体管相反的直流信号流。两个二极管或晶体管互连以产生它们转换的电压之间的差分电压，并且来自源的恒定电流的幅度基本上等于在其高频下测量的脉冲的计数损耗导致的饱和信号电流，导致自动校正计数损失。

4. 发明专利

DE4139198C2 未知
公开(公告)号：DE4139198C2
公开(公告)日：1994-07-14
申请号：DE4139198
申请日：1991-11-28
申请人： MITSUBISHI ELECTRIC CORP
发明人： ODA MINORU
IPC分类号： H03H11/04 , H03H11/12 , H03K5/02 , H03K5/01 , G01T1/172
摘要： A pulse shaping filter for use in pulse height analysis, wherein a plurality of semi-gaussian filters of different time constants are provided, which generate a plurality of signals of semi-gaussian shape with different pulse widths from one input signal, and added the plurality of signals after delaying them in a manner that the signal of the semi-gaussian filter of the smaller time constant is delayed longer, thereby to obtain a signal of approximately cusp shaping.

5. 发明专利

DE3578256D1 未知
公开(公告)号：DE3578256D1
公开(公告)日：1990-07-19
申请号：DE3578256
申请日：1985-10-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： ODA MINORU , OBA KUNIO
IPC分类号： G01T1/167 , G21C17/022 , G21C17/10 , G21C17/108 , G21C17/02
摘要： The meter measures the output of a nuclear reactor (1) from the concentration signal of a radioisotope N in a primary cooland loop (5), and has a transient response correction circuit. This correction circuit includes an approximated normal distribution response filter (11,20). This filter has a group delay time substantially corresponding to a single circulation time necessary for the primary coolant loop (5) of the nuclear reactor. The filter also has a rise time in the step response substantially corresponding to a spread time in the rise of the N concentration signal due to agitation occurring during the single circulation time.

6. 发明专利

DE3928584A1 未知
公开(公告)号：DE3928584A1
公开(公告)日：1990-04-12
申请号：DE3928584
申请日：1989-08-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： ODA MINORU
IPC分类号： G01T1/17 , G01J1/18 , G01J1/42 , G01J1/44 , G01R19/00
摘要： Described is herein a radiation measuring apparatus in which a detected pulse signal having a wave height value proportional to energy of radiation is transmitted through an optical fiber and a detected pulse signal received from the optical fiber is supplied to an external apparatus. Even if the transmission loss of the optical fiber is subjected to change with passage of time, a monitor pulse signal having a polarity reverse to that of a detected pulse signal is overlapped on the detected pulse signal lest the wave height of the detected pulse signal be not varied on the transmitting side, and a wave height value of a monitor pulse signal passed through the optical fiber is detected to compensate the wave height of the received detected pulse signal using the detected value.

7. 发明专利

GB2206761A SIGNAL DETECTION APPARATUS 未知
公开(公告)号：GB2206761A
公开(公告)日：1989-01-11
申请号：GB8808485
申请日：1988-04-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： ODA MINORU
IPC分类号： G01R19/00 , G01T1/17 , G01R23/10 , G01R29/02 , H03K5/1252 , H03K5/12
摘要： A signal detection apparatus wherein pulses of the reverse polarity to that of the signal pulse to be detected are detected from an input pulse signal, and thereafter the signal outputting path is cut off for a fixed period, so that noise pulses which have oscillating waveforms in both positive and negative polarites are segregated from the signal pulses which can be provided with a unipolarity, by making use of the difference in polarity, and thereby, the noise pulses are eliminated regardless of their pulse heights. Further, the signal input to the cut-off circuit is delayed for a fixed period of time so that the first peak of the noise pulses may be eliminated even if it is of the same polarity as that of the signal pulse.

9. 发明专利

DE3688871T2 未知
公开(公告)号：DE3688871T2
公开(公告)日：1994-01-20
申请号：DE3688871
申请日：1986-10-09
申请人： MITSUBISHI ELECTRIC CORP
发明人： ODA MINORU , NISHIZAWA YUKIO
IPC分类号： H03H11/22 , H03H7/21 , H03H11/20
摘要： A phase shifter according to this invention comprises circuit groups on a phase advance side (A) and on a phase retardation side (B) in each of which N phase shifting circuits (A 1 to An, B 1 to B n ) of constant amplitude are connected in cascade, and in which the time constants of the successive phase shifting circuits are set at a geometrical progression of a fixed ratio α, while the time constants of the phase shifting circuits on the phase retardation side (B) are made times greater than those of the corresponding phase shifting circuits on the phase advance side (A). Thus, any desired difference can be attained according to the value a, while a desired phase difference can be attained according to the value (3, and the limits of a frequency band width are eliminated by increasing the number of stages N of the cascade connection of the circuit group.

10. 发明专利

GB2219879B LOGARITHMIC AMPLIFIER 未知
公开(公告)号：GB2219879B
公开(公告)日：1992-11-18
申请号：GB8828524
申请日：1988-12-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： ODA MINORU
IPC分类号： H03G11/08 , G06G7/24
摘要： A logarithmic amplifier which obtains accurate logarithmic output voltage and expands maximum current value and which realizes accurate logarithmic conversion by eliminating logarithmic conversion error voltage resulting from internal resistance of logarithmic conversion element using a voltage appearing when a forward current of logarithmic conversion element is applied to a resistor.

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