| 术语 | keyed automatic gain control |
| 释义 | keyed automatic gain control 键控自动增益控制 A form of AGC used in television receivers whereby the control voltage is derive d by examining the signal level momentarily during each line-blanking interval. In this way the control voltage is unaffected by picture information or noise occurring during the active line period. 一种自动增益控制(AGC)方式,常用在电视接收机中,控制电压由直接检测每次行消隐期 间的信号电平来产生。这种方法的好处是在行周期内的画面信息或噪声不会影响控制电压 的大小。 |
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