| 摘要 |
PURPOSE:To provide a base line regeneration circuit in which noise is reduced and the reproducibility of a peak of the pulse is enhanced. CONSTITUTION:The base line regeneration circuit extracting a signal pulse from an input signal to measure a peak of the pulse is provided with a low pass filter comprising components R1, C1 eliminating a high frequency component included in a base line from the input signal, a signal detection means 3 detecting the pulse of the input signal, a latch means comprising components SW, C1 opening a switch SW with a detection signal of the signal detection means 3 to latch an output of the low pass filter and an adder means 2 adding the signal latched by the latch means C1 and an inverted input signal through an arithmetic operation means 1. Thus, the low pass filter is used to attenuate the signal component whose pulse width is shorter than the pulse width of the input signal and a mean value of high frequency noise is latched by the latch means and the pulse is segmented with excellent reproducibility of the peak of the pulse. |
