Echo cancellation device for full duplex communication systems

Details Echo cancellation device for full duplex communication systems Echo cancellation device for full duplex communication systems

2007-12-04

2007-12-04

Singh, Ramnandan (Department: 2614)

Multiplex communications

Duplex

Transmit/receive interaction control

C379S406010

Reexamination Certificate

active

10709935

ABSTRACT:
An echo cancellation device for a full duplex communications system is provided. The full duplex communication system has a transmitter for transmitting a transmit signal and a receiver for receiving a receive signal. The echo cancellation device has a filter for outputting a filter signal according to the transmit signal, an echo cancellation circuit connected to the filter for outputting an echo cancellation signal according to the filter signal, at least one echo cancellation resistor connected to the transmitter, the receiver, and the echo cancellation circuit, and an echo cancellation detection circuit for outputting a control signal according to an echo residue at the receiver to control the filter.

REFERENCES:
patent: 5694474 (1997-12-01), Ngo et al.
patent: 5812537 (1998-09-01), Betts et al.
patent: 5960077 (1999-09-01), Ishii et al.
patent: 6373908 (2002-04-01), Chan
patent: 6775529 (2004-08-01), Roo
patent: 6947478 (2005-09-01), Hauptmann et al.
patent: 6980644 (2005-12-01), Sallaway et al.
patent: 2002/0101983 (2002-08-01), Lee
patent: 318989 (1997-11-01), None
patent: 507433 (2002-10-01), None
“15MHz, BIMOS Operational Amplifier with MOSFET Input/CMOS Output.”, HARRIS Semiconductor, Sep. 1998, pp. 1, 4, CA3130, CA3130A, No. 817.4., Harris Corporation 1998.

Affiliated with

Also associated with

Rating

Echo cancellation device for full duplex communication systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Echo cancellation device for full duplex communication systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Echo cancellation device for full duplex communication systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3840473