Patent ID: 6335948
Filing Date: 2002-01-01
Classification: G01R,H03K,H04N

Abstract:
An amplitude detector comprising:a first peak holding means for generating a first peak voltage signal for holding a peak voltage of a detected signal; a first differential signal generating means for generating a first differential signal between said first peak voltage signal and said detected signal; a second peak holding means for generating a first amplitude detect signal holding a peak voltage of said first differential signal; a third peak holding means for generating a third peak voltage signal for holding a peak voltage of a reference signal; a second differential signal generating means for generating a second differential signal between said third peak voltage signal and said reference signal; a fourth peak holding means for generating a second amplitude detect signal holding a peak voltage of said second differential signal; and a third differential signal generating means for generating a third amplitude detect signal corresponding to a difference between said first amplitude detect signal and said second amplitude detect signal.