摘要
介绍了手选和自动顺序切换均可任意扩展的视音频切换电路。解决了CD4017在链接中的计数脉冲定向、复位后补发脉冲等问题,使得自动顺序切换的通道数也可任意扩展。
A extendible Video-Audio Switcher circuit by hand-selecting or automatic sequential switching was in tro duced.The directionality of the counting pulse of CD4017in link and the reoutputing the com pensated pulse after a reset were solved,therefore,the pass channel number controlled by the automatic sequen tial switch-ing also can be arbitrarily extended.
出处
《电视技术》
北大核心
2002年第5期62-64,共3页
Video Engineering
