The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 04, 2000

Filed:

Jan. 06, 1997
Applicant:
Inventors:

Masato Takeyabu, Sapporo, JP;

Norio Murakami, Sapporo, JP;

Yasutaka Yamagata, Kawasaki, JP;

Toshiyuki Sakai, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kanagawa, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330252 ; 330258 ; 330260 ;
Abstract

A transmission-line loss equalizing circuit includes an equalizer, a gain control circuit for controlling the gain of the equalizer based upon the peak value of an equalized output, a slicer for slicing the equalized output and outputting a data pulse, a timing extraction pulse and an equalization control pulse, a DC feedback level detector for detecting a DC component of the equalized output and feeding the DC component back to the equalizer, and an attenuating circuit provided as an initial stage of the equalizer. A plurality of .sqroot.fAGC circuits constructing the equalizer are cascade-connected and constructed by a differential non-inverting amplifier.


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