Apparatus and method for transient suppression in synchronous data detection systems

摘要

Disclosed is a method for transient suppression in synchronous data protection systems which includes high-pass filtering of the signal produced by the sampling and shaping circuits before the signal enters the timing and gain control circuits. This high-pass filtering may be turned on when a transient is detected, in anticipation of a previously detected transient, or may be always on. Using the high-pass version of the shaped signal allows the timing loop and the gain loop to function during a transient interval, thus maintaining timing and gain lock during such an interval.