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Title:
METHOD AND DEVICE FOR ECHO CANCELATION
Document Type and Number:
Japanese Patent JP2001211105
Kind Code:
A
Abstract:

To provide a method and a device for echo cancelation of a communication line system.

The echo cancelation of the communication line system, specially, an ISDN or XDSL system is carried out by an adjustable hybrid circuit 5 which is united to an analog part of a front end 3 and has an adjustable passive element and the value of the adjustable passive element is controlled by a digital control means 4 such as a microprocessor.


Inventors:
VANDERBAUWHEDE WIM
BOXHO JEAN
MACQ DAMIEN LUC FRANCOIS
Application Number:
JP2000357073A
Publication Date:
August 03, 2001
Filing Date:
November 24, 2000
Export Citation:
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Assignee:
CIT ALCATEL
International Classes:
H03H7/00; H04B1/58; H04B3/20; H04B3/03; H04B3/18; H04B3/23; H04L27/01; H04M1/58; H04M9/08; H04Q3/42; H04B; (IPC1-7): H04B3/20; H04B3/03; H04Q3/42
Domestic Patent References:
JPS5632836A1981-04-02
JPH02296419A1990-12-07
JPS5525254A1980-02-22
JPH0837480A1996-02-06
Foreign References:
US4670870A1987-06-02
Attorney, Agent or Firm:
Yoshio Kawaguchi (2 outside)



 
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