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1.发明专利
公开(公告)号：SG48468A1
公开(公告)日：1998-04-17
申请号：SG1996010494
申请日：1996-08-26
Applicant: IBM
Inventor： GALBRAITH RICHARD LEO , STANEK DAVID JAMES
Abstract: A method and apparatus are provided for gain adjustment of a signal. A plurality of comparators compare the signal with a plurality of threshold values. An envelope detector coupled to the comparator includes a peak capture function for detecting the amplitude of the signal and a polarity memory for detecting polarity of the signal. A gain control function for setting a gain correction value is responsive to the peak capture function and the polarity memory. Features of the signal gain adjustment method and apparatus of the invention include an intelligent hold of the gain control over both thermal asperities and null gaps in the signal.
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