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公开(公告)号：EP0175888A3
公开(公告)日：1987-11-11
申请号：EP85109756
申请日：1985-08-02
发明人： Cellerino, Giuliano
CPC分类号： H04L1/22 , H03L7/087 , H04L7/0083
摘要： A phase comparator is included with each incoming channel to compare the clock phase of the incoming signal and a local oscillator. The phase comparator of an on-line active unit generates a signal to control the oscillator to maintain its output in phase with the incoming signal. The generated control signal is also connected to capacitor storage in associated channel phase comparators to provide them with an initial starting control voltage when they are switched in to be the receiving channels. Thus eliminating the uncontrolled operation of the oscillator during switching interval.
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