Global Patent Index - EP 1042873 A1

EP 1042873 A1 2000-10-11 - ADAPTIVE NON-LINEAR ECHO COMPENSATOR

Title (en)

ADAPTIVE NON-LINEAR ECHO COMPENSATOR

Title (de)

ADAPTIV NICHTLINEARER ECHOKOMPENSATOR

Title (fr)

COMPENSATEUR D'ECHO NON LINEAIRE ADAPTATIF

Publication

EP 1042873 A1 (DE)

Application

EP 98965612 A

Priority

  • DE 9803671 W
  • DE 19757337 A

Abstract (en)

[origin: DE19757337C1] The echo canceller includes several groups of coefficient storage units (130,132,134) each of which is assigned to any number of N consecutive symbols of a communication signal. A selection circuit (102) is connected to a transmission channel (12) and receives a communication signal. The selection circuit is able to select a group using an actual received value and N-1 previous symbols of the communication channel. A circuit (140,150) superimposes the coefficients of a group and a communication signal in turn using the symbol clock.

IPC 1-7 (main, further and additional classification)

H04B 3/23

IPC 8 full level (invention and additional information)

H04B 3/23 (2006.01)

CPC (invention and additional information)

H04B 3/23 (2013.01)

Citation (search report)

See references of WO 9933195A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

DE 19757337 C1 19990624; CN 1254928 C 20060503; CN 1283337 A 20010207; EP 1042873 A1 20001011; JP 2001527315 A 20011225; KR 100404012 B1 20031101; US 6563870 B1 20030513; WO 9933195 A1 19990701

INPADOC legal status


2004-01-07 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030703

2002-08-21 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020709

2000-10-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000417

2000-10-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT