PROCESS INPUT DEVICE

PURPOSE:To eliminate the chattering of a switch and the influence of dispersion in an input circuit by providing a state detection circuit to detect the state change of a large number of switches and a delay circuit to delay the detecting signal of the detection circuit for a prescribed time. CONSTI...

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Bibliographic Details
Main Author KAKEHI ATSUYUKI
Format Patent
LanguageEnglish
Published 21.12.1989
Subjects
CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROLLING
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
REGULATING
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Summary:PURPOSE:To eliminate the chattering of a switch and the influence of dispersion in an input circuit by providing a state detection circuit to detect the state change of a large number of switches and a delay circuit to delay the detecting signal of the detection circuit for a prescribed time. CONSTITUTION:For example, when the chattering is generated in the switch, the output signals of the input circuits (3a-3h) are turned on and off repeatedly. Meanwhile, in the beginning of the change of the on/off state, the detecting signal S1 outputted from the state detection circuit 11 is added on an input buffer 4 as an input trigger signal TG after the lapse of a delay time at the delay circuit 12. Therefore, the signal of the switch is stored in the input buffer 4 in a state where the chattering is statistically determined and the on state is established.
Bibliography:Application Number: JP19880147973