Locating network echos

Details Locating network echos Locating network echos

2005-09-20

2005-09-20

Chin, Wellington (Department: 2664)

Multiplex communications

Duplex

Transmit/receive interaction control

C370S287000, C370S288000, C370S289000, C370S290000, C370S291000, C379S406010, C379S406050, C379S406080, C379S406090

Reexamination Certificate

active

06947395

ABSTRACT:
An echo cancelling system for cancelling echoes in a communication path includes an echo locator and an echo canceller. The echo locator is coupled to the communication path and locates the positions of echo signals received from the communication path. The echo canceller is also coupled to the communication path and cancels echo signals received therefrom. During echo cancellation, the echo canceller becomes active in regions corresponding to the positions of echo signals in response to the echo locator.

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