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1. 发明申请

WO2009133481A3 COUNTING DETECTOR 审中-公开
标题翻译：计数器
公开(公告)号：WO2009133481A3
公开(公告)日：2010-06-10
申请号：PCT/IB2009051192
申请日：2009-03-20
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , MARKS AVIV , HERRMANN CHRISTOPH , ROESSL EWALD
发明人： MARKS AVIV , HERRMANN CHRISTOPH , ROESSL EWALD
IPC分类号： G01T1/17
CPC分类号： G01T1/17
摘要： A pulse shaper (124) includes an integrator (202) with a feedback capacitor (208) that stores integrated charge of a charge pulse indicative of a detected photon. An output pulse of the integrator includes a peak amplitude indicative of the detected photon. An end pulse identifier (214) identifies the end of the charge pulse. A controller (216) generates a control signal that invokes a reset of the integrator (202) when the end of the 5 pulse is identified. An energy discriminator (128) includes a chain of comparators (132) connected in series. An output of each of the comparators (702, 704) is influenced by an output of a previous one of the comparators (702, 704). A decision component (706) determines an output of the comparators (702, 704), and a controller component (708) triggers the decision component (706) to store the output of the comparators (702, 704) 10 after lapse of a charge collection time.
摘要翻译：脉冲整形器（124）包括具有反馈电容器（208）的积分器（202），该反馈电容器存储指示检测到的光子的电荷脉冲的积分电荷。积分器的输出脉冲包括指示检测到的光子的峰值振幅。结束脉冲识别器（214）识别充电脉冲的结束。当识别出5脉冲的结束时，控制器（216）产生调用积分器（202）的复位的控制信号。能量鉴别器（128）包括串联连接的比较器链（132）。每个比较器（702,704）的输出受到前一个比较器（702,704）的输出的影响。判定部件（706）确定比较器（702,704）的输出，并且控制器部件（708）触发判定部件（706），以在经过充电之后存储比较器（702,704）10的输出收集时间。

2. 发明申请

WO2008155679A3 DIGITAL PULSE PROCESSING FOR MULTI-SPECTRAL PHOTON COUNTING READOUT CIRCUITS 审中-公开
标题翻译：用于多光子计数读数电路的数字脉冲处理
公开(公告)号：WO2008155679A3
公开(公告)日：2009-07-09
申请号：PCT/IB2008052042
申请日：2008-05-23
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , PROKSA ROLAND , SCHLOMKA JENS-PETER , ROESSL EWALD , LIRAN TUVIA , MARKS AVIV
发明人： PROKSA ROLAND , SCHLOMKA JENS-PETER , ROESSL EWALD , LIRAN TUVIA , MARKS AVIV
IPC分类号： G01T1/17
CPC分类号： G01T1/171
摘要： An apparatus includes a local minimum identifier (408) that identifies a local minimum between overlapping pulses in a signal, wherein the pulses have amplitudes that are indicative of the energy of successively detected photons from a multi-energetic radiation beam by a radiation sensitive detector, and a pulse pile-up error corrector (232) that corrects, based on the local minimum, for a pulse pile-up energy-discrimination error when energy-discriminating the pulses using at least two thresholds corresponding to different energy levels. This technique may reduce spectral error when counting photons at a high count rate.
摘要翻译：一种装置包括识别信号中重叠脉冲之间的局部最小值的局部最小标识符（408），其中脉冲具有指示由辐射敏感检测器从多能辐射束连续检测到的光子的能量的幅度，以及脉冲堆积误差校正器（232），其基于局部最小值来校正针对对应于不同能级的至少两个阈值对脉冲进行能量鉴别的脉冲堆积能量鉴别误差。当以高计数率计数光子时，该技术可能降低光谱误差。

3. 发明申请

WO2009050619A2 PARTICLE-COUNTING APPARATUS WITH PULSE SHORTENING 审中-公开
标题翻译：颗粒计数装置与脉冲缩小
公开(公告)号：WO2009050619A2
公开(公告)日：2009-04-23
申请号：PCT/IB2008054139
申请日：2008-10-09
申请人： KONINKL PHILIPS ELECTRONICS NV , MARKS AVIV , LIRAN TUVIA
发明人： MARKS AVIV , LIRAN TUVIA
CPC分类号： G01T1/171
摘要： PH008966WO1 ABSTRACT A particle-counting apparatus is described, which reduces a resulting width of pulses when a charge pulse is received from a particle detector, thereby reducing pile-up problems with pulses. Pulse shortening is obtained by resetting the pulse shortly after it exceeds its peak level at the apparatus output. The apparatus includes a charge-sensitive amplifier and a shaper which generates an output for subsequent discrimination circuits. A reset generator monitors the shaper output and generates a reset signal to the shaper when a peak has been detected.
摘要翻译： PH008966WO1摘要描述了一种粒子计数装置，当从粒子检测器接收到充电脉冲时，其减小了脉冲的产生宽度，从而减少了脉冲堆积问题。脉冲缩短是通过在器件输出超过其峰值电平后不久复位脉冲而获得的。该装置包括一个电荷敏感放大器和整形器，其产生用于后续鉴别电路的输出。当检测到峰值时，复位发生器监视整形器输出并产生到整形器的复位信号。

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