Broadcom Corporation

James Chi Thi

Thomas J Kolze

Bruce Joseph Currivan

Eric Jon Ojard

Jonathan S Min

Daniel Harvey Howard

Kevin Lee Miller

Todd Lee Brooks

David Hartman

Theodore F Rabenko

Robert J Lee

Shane Patrick Lansing

Robert M Lukas

Ramin Borazjani

Kenneth J Unger

A system is configured to facilitate bidirectional voice communication between a number of data and/or telephony devices.

Modem with voice processing capability

A network gateway is configured to facilitate on line and off line bi-directional communication between a number of near end data and telephony devices with far end data termination devices via a hybrid fiber coaxial network and a cable modem termination system. The described network gateway combines a QAM receiver, a transmitter, a DOCSIS MAC, a CPU, a voice and audio processor, a voice synchronizer, an Ethernet MAC, and a USB controller to provide high performance and robust operation.

A filter settings generation operation includes sampling a communication channel to produce a sampled signal. The sampled signal is spectrally characterized across a frequency band of interest to produce a spectral characterization of the sampled signal. This spectral characterization may not include a signal of interest. The spectral characterization is then modified to produce a modified spectral characterization. Filter settings are then generated based upon the modified spectral characterization. Finally, the communication channel is filtered using the filter settings when the signal of interest is present on the communication channel. In modifying the spectral characterization, pluralities of spectral characteristics of the spectral characterization are independently modified to produce the modified spectral characterization. Modifications to the spectral characterization may be performed in the frequency domain and/or the time domain. One particular spectral modification that is performed is raising of the noise floor of the spectral characterization to meet a budgeted signal-to-noise ratio. Other spectral modifications include modifying spectral components corresponding to an expected interfering signal. In modifying these spectral characterizations, spectral components corresponding to a plurality of expected interfering signals may be modified.

System and method for canceling interference in a communication system

Cable modem with voice processing capability

Growing community of inventors

Irvine, CA, United States of America

James Chi Thi