Automatic equalization method and apparatus

Pulse or digital communications – Repeaters – Testing

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333 18, 3647242, H03H 730

Patent

active

051519240

ABSTRACT:
An automatic equalization apparatus useful for supplying an output signal of a transversal filter simultaneously to two juxtaposed comparators, one of the two comparators performing signal identification, the other of the two comparators detecting an equalization error with the reference level changed, and extracting data from resultant two kinds of data trains by taking at least (N-1)/2+1 bits as the unit, N being the number of taps of the transversal filter, performing correlation computation, and setting tap coefficients of the transversal filter on the basis of the resultant accumulated value.

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patent: 3781720 (1973-12-01), Mueller
patent: 3820042 (1974-06-01), Mueller
patent: 4298983 (1981-11-01), Kawai et al.
patent: 4453256 (1984-06-01), Ryu

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