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.
Patent No.:
Date of Patent:
Oct. 29, 2013
Filed:
Nov. 30, 2007
Applicant:
Shigeki Wada, Tokyo, JP;
Inventor:
Shigeki Wada, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 7/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
An equalization filter is provided for solving the problem in which there is a limited range in which compensated for distortion of a transmission signal can be made. Measuring instrumentmeasures a distortion quantity which characterizes distortion of the transmission signal. Comparatorgenerates a differential signal which indicates the difference between the transmission signal and a compensation signal. Delay devicedelays the differential signal based on the distortion quantity measured by measurement instrumentand generates the compensation signal.