公开(公告)号：JPH10336034A

公开(公告)日：1998-12-18

申请号：JP26751097

申请日：1997-09-30

Applicant: KOREA TELECOMMUN

Inventor： HAN IL SONG ,  CHOI YOUNG JAE ,  KIM DAE HWAN

IPC: G06F3/05 ,  H03K21/00 ,  H03M1/54 ,  H03M1/60

Abstract: PROBLEM TO BE SOLVED: To execute fast analog arithmetic through the use of an analog voltage value by providing a pulse extracting means and an electric discharging means, etc., for discharging the current of an electric storing means while being fed back with the output of the pulse extracting means as a control means. SOLUTION: The pulse output of a pulse extracting part 13 is fed back as the control signal to turn on the third analog switch 140 of an electric charge discharging part 14. Thereby, the current of a capacitor 111 is discharged through an electric discharge adjusting part 141. This process continues until the voltage of the capacitor 111 becomes smaller than the reference voltage of a voltage comparator 121, and a pulse extraction part 13 outputs a pulse in the cycle of a master clock. Consequently, a voltage/pulse converter which is capable of fast analog arithmetic through the use of an analog voltage value in analog signal processing and analog/digital mix signal processing is obtained by changing a pulse by the voltage change of the capacitor 111.