Patent Number: 6,166,594

Title: Self calibrating demodulator system

Abstract: A reference signal source produces a substantially distortion free reference signal which is supplied to a demodulator that is arranged to demodulate the substantially distortion free reference signal. A calibration filter and an equalizer are included downstream of the demodulator. A controller sets the calibration filter to initially pass the reference signal to the equalizer without substantial change to the reference signal. The controller subsequently calibrates the calibration filter in accordance with the demodulator caused distortion reduced by the equalizer.

Inventors: Nielsen; Larry E. (Chicago, IL), Sgrignoli; Gary J. (Mt. Prospect, IL)

Assignee: Zenith Electronics Corporation

International Classification: H04B 17/00 (20060101); H04B 1/28 (20060101); H04B 1/00 (20060101); H03D 001/06 (); H04B 017/00 (); H04B 001/10 (); H03K 009/00 ()

Expiration Date: 12/26/2017