H - Electricity – 03 – H
Patent
H - Electricity
03
H
328/0.2
H03H 17/02 (2006.01) H04L 25/03 (2006.01) H04N 5/21 (2006.01)
Patent
CA 1171469
- 10 - Abstract of the Disclosure An automatic equalizer comprises a transversal filter connected to receive an input signal such as a television signal in which a predetermined periodic reference signal is present and having variable tap gains, and a correlator for forming the correlation bet- ween the input and output signals of the transversal filter and correcting the tap gains of the transversal filter to cancel out distortion components such as ghost component contained in the input signal. For the pur- pose of preventing the slow convergence and fluctuation of tap gains of the transversal filter due to non- periodic noise components contained in the input signal, a circuit is further provided to integrate a predeter- mined portion of the waveform of the reference signal contained in the input signal. An output signal of the waveform integrator circuit is correlated with the out- put signal of the transversal filter by the correlator.
378449
Makino Shinichi
Murakami Junzo
Obara Masaharu
Onishi Shunichi
Sakurai Masaru
Nippon Hoso Kyokai
Ridout & Maybee Llp
Tokyo Shibaura Denki Kabushiki Kaisha
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