| 摘要 |
PROBLEM TO BE SOLVED: To provide a slice circuit capable of dynamically slicing an input analog signal over wide band even when that signal contains an intermediate (gray) level. SOLUTION: In a wide band dynamic range slice circuit, an anti-parallel connected diode couple is connected between points N0 and N1, a peak hold capacitor C1 is connected between the point N1 and the ground, a gamma correcting circuit 6E21 is parallel connected to the diode couple, and an injection component adjusting circuit 6E22 is parallel connected to the peak hold capacitor C1. The (-) input terminal of a comparator 6D is connected to the point N0 and the other input terminal of the comparator 6D is connected to the point N1. The change component at N0 is instantaneously transmitted/injected to the peak hold capacitor C1 by the gamma correcting circuit 6E21 and an injection component to this capacitor C1 is adjusted by the injection component adjusting circuit 6E22. A Y-axis (voltage) change amount and an X-axis (time base) change amount can be arbitrarily set. |
