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1. 发明授权

US5307299A Circuit arrangement for the digital processing of semiconductor detector signals 失效
标题翻译：用于数字处理半导体检测器信号的电路布置
公开(公告)号：US5307299A
公开(公告)日：1994-04-26
申请号：US988095
申请日：1992-12-09
申请人： Jurgen Stein , Andrey Georgiev , Andree Buchner , Werner Gast
发明人： Jurgen Stein , Andrey Georgiev , Andree Buchner , Werner Gast
IPC分类号： G01T1/24 , G06F15/336
CPC分类号： G01T1/24 , G01T1/171
摘要： A system for processing the signals from a gamma or other radiation detector through a charge-sensitive preamplifier, makes use of a fast analog to digital converter at the input, preferably downstream of an anti-aliasing filter, and circuitry for the deconvolution of the signal in which the preamplifier transfer function is convoluted with the charge distribution function The deconvolution results which are free from any charge related to any radiation event are averaged and subtracted from the averaged value of the deconvolution results, which results contain completely the charge of the event under processing, and the subtracted signal through a register provides the output. The system represents a significant improvement with respect to the ballistic deficit suppression and with respect to the noise index-counting rate factor allowing a significant improvement in the counting rate for a given noise level or a higher resolution for a given counting rate.
摘要翻译：用于通过电荷敏感性前置放大器处理来自伽马或其他辐射检测器的信号的系统利用在反混叠滤波器的输入端，优选地在反混叠滤波器的下游的快速模数转换器，以及用于信号去卷积的电路其中前置放大器传递函数与电荷分布函数进行卷积。对于与任何辐射事件相关的任何电荷没有的反卷积结果进行平均，并从去卷积结果的平均值中减去，结果完全包含事件的电荷处理，并且通过寄存器的减法信号提供输出。该系统对于防弹性的抑制和相对于噪声指数计数速率因子的显着改进，允许给定噪声水平的计数率显着提高或给定计数率的较高分辨率。

2. 发明授权

US5442575A Scanning analog-to-digital converter operating under the subranging principle 失效
标题翻译：扫描模拟到数字转换器的工作原理
公开(公告)号：US5442575A
公开(公告)日：1995-08-15
申请号：US240985
申请日：1994-05-11
申请人： Werner Gast , Andrey Georgiev , Rainer M. Lieder
发明人： Werner Gast , Andrey Georgiev , Rainer M. Lieder
IPC分类号： H03M1/12 , H03M1/14 , G06J1/00
CPC分类号： H03M1/145
摘要： A sampling analog-to-digital converter operating in accordance with the subranging principle and with interpolation residue coding has a coarse value of the input signal applied to an integrator through a differential analog-to-digital converter (ADC) and a summer. The residue is also supplied to this integrator by conversion of the output of the integrator to an analog signal by a DAC and subtracting that signal from the input signal, advantageously supplied to the subtractor through a time-delay unit. The output of the subtractor is fed through an analog-to-digital converter which provides the second input to the above-mentioned summer. By comparison with the internal ADCs, the sampling circuit has a greater dynamic range and higher resolution and precision. It is particularly suited for input signals with rapid rise and slow decay as obtained from semiconductor detectors of a nuclear spectrometer.
摘要翻译：根据子原理和内插残差编码操作的采样模数转换器通过差分模数转换器（ADC）和加法器具有施加到积分器的输入信号的粗略值。通过DAC将积分器的输出转换为模拟信号，并将该信号从输入信号中减去，有利地通过时间延迟单元提供给减法器，该残差也被提供给该积分器。减法器的输出通过模拟数字转换器馈送，该转换器为上述夏季提供第二输入。与内部ADC相比，采样电路具有更大的动态范围和更高的分辨率和精度。特别适用于从核子光谱仪的半导体检测器获得的具有快速上升和慢衰减的输入信号。

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