| 摘要 |
<p>The present invention is designed to eliminate the chattering phenomenon in a control signal generated by a key switch or the like wherein the chattering components are present for a prdetermined time period subsequent to the initiation and termination of the control signal. The invention includes a monostable circuit adopted to generate an intermediate signal upon the detection of the rising leading edge of the chattering components and for a given time thereafter. The duration of the intermediate signal is preset to be at least as long as the predetermined time period. Both the intermediate signal and the control signal are fed to a bistable circuit which generates an output signal during the control signal at a time determined by the termination of the intermediate signal. The bistable circuit continues to generate the output signal for a time determined by the termination of the control signal. In this manner, the output signal is substantially a duplication of the control signal with the chattering components thereof eliminated.</p> |
