Title:
GATE CIRCUIT FOR TOUCH SWITCH
Document Type and Number:
Japanese Patent JPS5630323
Kind Code:
A
Abstract:
PURPOSE: To prevent malfunction by accepting only a fixed number of pulses from a touch switch after holding operation is started.
CONSTITUTION: With hold switch 18 off, latch circuits 221∼223 are not in latch operation, so that touch switches 101∼103 are ineffective. As gate signal (g) is generated at the rise of clock signal (e) counted by a fixed number (one in this case) after switch 18 is turned on, AND gates 201 and 203 are closed. Therefore, touch sensor signals from the on-operation of switch 18 until the generation of gate signal (g) are latched by the latch circuits and other touch sensor signals are not latched.
Inventors:
KONDOU MAKOTO
SHIMIZU NORIO
KIMURA AKITERU
DAIGAKU MASAAKI
OSADA HAJIME
MOTOYAMA KAZUYASU
KITAJIMA TAKEAKI
TOMIZAWA YOSHIO
SHIMIZU NORIO
KIMURA AKITERU
DAIGAKU MASAAKI
OSADA HAJIME
MOTOYAMA KAZUYASU
KITAJIMA TAKEAKI
TOMIZAWA YOSHIO
Application Number:
JP10580679A
Publication Date:
March 26, 1981
Filing Date:
August 20, 1979
Export Citation:
Assignee:
OLYMPUS OPTICAL CO
International Classes:
H03K17/00; H03K17/96; (IPC1-7): H01H36/00; H03K17/00