Apparatus and method for transient suppression in synchronous da

Details Apparatus and method for transient suppression in synchronous da Apparatus and method for transient suppression in synchronous da

1997-04-28

1998-11-03

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

327155, 327559, 375345, 375376, H03K 1700

Patent

active

058314563

ABSTRACT:
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.

REFERENCES:
patent: 5559836 (1996-09-01), Nishijima
patent: 5638409 (1997-06-01), Awata et al.
Cideciyan, Roy D., Dolivo, Francois, Hermann, Reto, Hirt, Walter and Schott, Wolfgang, A PRML System for Digital Magnetic Recording, IEEE Journal on Selected Areas in Communications, vol. 10, No. 1, Jan. 1992, pp. 38-56.

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