DETECTION CIRCUIT FOR BURST-HEAD

摘要

PROBLEM TO BE SOLVED: To eliminate noise for a non-signal period between burst signals by detecting the head of the burst signal.

SOLUTION: A detection circuit for burst-head includes: a high pass filter 3 for receiving burst signals AOP, AON, a hysteresis comparator 4 that receives filter output signals HOP, HON passing through the high pass filter 3 to detect a change in the filter output signals whose level exceeds a prescribed threshold value; and a switch 6 that shuts-off the output of the burst signals to post-stage circuits until the hysteresis comparator 4 detects the head of the burst signal and outputs the burst signals to the post-stage circuits when the hysteresis comparator 4 detects the head of the burst signal.

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