Fixed equalizer and equalizing method

Details Fixed equalizer and equalizing method Fixed equalizer and equalizing method

1996-07-29

1997-12-02

Chin, Wellington

Pulse or digital communications

Equalizers

3647242, 333 28R, H04B 314

Patent

active

056944225

ABSTRACT:
A fixed equalizer and a fixed equalization method compensates for amplitude distortion, delay distortion, etc., of a signal transmitted over a transmission line. A processor unit carries out filtering process, such as amplitude equalization, delay equalization, line equalization, etc., in accordance with parameters read from a memory. In view of the fact that amplitude equalization process can be achieved by a combination of a highpass filter and a lowpass filter and line equalization process can be achieved by a filter having an attenuating characteristic which is negative at low frequencies and positive at high frequencies, the present invention stores parameters providing a characteristic corresponding to the synthesis of the characteristics of such filters in the memory and performs filtering computation on the basis of the parameters.

REFERENCES:
patent: 3522546 (1970-08-01), Jackson et al.
patent: 3980873 (1976-09-01), Mattei
patent: 4247940 (1981-01-01), Mueller et al.
patent: 4483009 (1984-11-01), Honda et al.
patent: 4491808 (1985-01-01), Saito
patent: 4872184 (1989-10-01), Yamaguchi et al.

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