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:
Nov. 24, 1998
Filed:
Dec. 11, 1996
Applicant:
Inventors:
Nobukazu Koizumi, Kawasaki, JP;
Yutaka Awata, Kawasaki, JP;
Assignee:
Fujitsu Limimited, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H / ;
U.S. Cl.
CPC ...
375233 ; 379410 ; 370286 ;
Abstract
A post-cursor tap coefficient of a decision feedback equalizer is used as a coefficient of an echo canceler during a cold-start echo canceler training period in which a communication start-up training is carried out in an initial state and during a cold-start received signal detection period, so that an echo cancellation characteristic can be improved without increasing the circuit scale of the echo canceler and a high-speed, error-free received signal detection can be attained.