Waveform equalizer and shift register

Details Waveform equalizer and shift register Waveform equalizer and shift register

2007-01-02

2007-01-02

Bayard, Emmanuel (Department: 2611)

Pulse or digital communications

Equalizers

C375S230000

Reexamination Certificate

active

10409090

ABSTRACT:
In a tap1in a shift register of a waveform equalizer, data of an input signal is stored in a data storing FF111. A tap coefficient computing unit114calculates a tap coefficient, which is stored in a tap coefficient storing FF112and output to an absolute value computing unit115. The unit115obtains the absolute value of the tap coefficient. A comparator116compares the absolute value to a threshold value. A masking unit117masks and outputs the data from the data storing FF111to a multiplier113if the absolute value is smaller than the threshold value, while outputting the data from the data storing FF111without change if the absolute value is no less than the threshold value. The multiplier113multiplies the data of the input signal by the tap coefficient and outputs a signal to an adder108.

REFERENCES:
patent: 5414732 (1995-05-01), Kaufmann
patent: 6233107 (2001-05-01), Minuhin
patent: 6621862 (2003-09-01), Dabell
patent: 7035330 (2006-04-01), Shanbhag et al.
patent: 2002/0118741 (2002-08-01), Tokunaga et al.
patent: 06-181424 (1994-06-01), None
patent: 06-350878 (1994-12-01), None

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