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

2007-12-11

2007-12-11

Singh, Ramnandan (Department: 2614)

Multiplex communications

Duplex

Transmit/receive interaction control

C379S406010

Reexamination Certificate

active

10711294

ABSTRACT:
The invention relates to an echo cancellation device for a full duplex communication system. The echo cancellation device utilizes a pull-up current source to increase the DC level, so as to improve the echo cancellation performance with avoiding signal distortion. And the pull-up current source used in the echo cancellation device can be implemented to a fixed current source or an adjustable current source.

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“15MHz, BiMOS Operational Amplifier with MOSFET Input/CMOS Output.”, HARRIS Semiconductor, Sep. 1998, pp. 1, 4, CA3130, CA3130A, No. 817.4

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