Pulse or digital communications – Equalizers – Automatic
Patent
1995-02-08
1996-06-25
Chin, Stephen
Pulse or digital communications
Equalizers
Automatic
375233, 375236, H03H 730, H03H 740, H03K 5159
Patent
active
055307213
ABSTRACT:
An equalizer for use in a receiving system of a code transmission system has a plurality of series-connected delay elements, a plurality of coefficient units for weighting tap output signals extracted in parallel from the delay elements, an adder for adding output signals from the coefficient units, and a tap coefficient setting circuit for adjusting the weighting of the coefficient units. The tap coefficient setting circuit has a multiplier for multiplying a differential signal, the differential signal representing a difference between an output signal from the equalizer and a predetermined reference signal, and the tap output signals, a variation detecting circuit for being supplied with an output signal from the multiplier and detecting a variation of tap coefficients, and an accumulating circuit for outputting established tap coefficients based on an output signal from the variation detecting circuit.
REFERENCES:
patent: 5065241 (1991-11-01), Iga
patent: 5210774 (1993-05-01), Abbiate et al.
patent: 5359628 (1994-10-01), Muto
patent: 5369668 (1994-11-01), Yamamoto
patent: 5414571 (1995-05-01), Matsushige et al.
patent: 5420884 (1995-05-01), Inoue
Inoue Akira
Suzuki Mitsuhiro
Chin Stephen
Maioli Jay H.
Sony Corporation
Vo Don
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