Transceiver circuit including an echo canceller

Details Transceiver circuit including an echo canceller Transceiver circuit including an echo canceller

2006-06-20

2006-06-20

Chin, Wellington (Department: 2664)

Multiplex communications

Duplex

Transmit/receive interaction control

C370S278000, C370S289000, C370S290000, C370S291000, C370S293000, C375S213000, C375S213000, C375S213000, C375S213000, C375S213000, C375S213000, C375S213000

Reexamination Certificate

active

07065056

ABSTRACT:
A circuit for transmitting and receiving communications. The circuit includes a transmit block, a receive block, and an echo canceller, coupled to the transmit block and to the receive block, for determining an echo signal and subtracting it from the received signal, the determination of the echo signal involving a predetermined number N of coefficients calculated at the beginning of each of the communications in an initialization phase. The circuit periodically updates during communication a restricted group of coefficients chosen from among the most significant coefficients. The present invention also relates to an echo cancellation method.

REFERENCES:
patent: 4736414 (1988-04-01), Montagna et al.
patent: 5418778 (1995-05-01), Cummiskey et al.
patent: 5721782 (1998-02-01), Piket et al.
patent: 5920548 (1999-07-01), El Malki
French Search Report from French Patent Application 00/08745, filed Jul. 5, 2000.

Affiliated with

Also associated with

Rating

Transceiver circuit including an echo canceller does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transceiver circuit including an echo canceller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transceiver circuit including an echo canceller will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3666849