Echo canceller and compression operators cascaded in time...

Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching

Reexamination Certificate

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Details

C370S286000, C370S401000, C379S406010

Reexamination Certificate

active

07142533

ABSTRACT:
A cascaded signal processing arrangement processes digitally encoded voice samples transported over a time division multiplex (TDM) communication path for application to a processor-controlled digital communication device, in particular an integrated access device. Processed voice samples are packetized in accordance with an encapsulating protocol and transmitted as a packetized voice output stream to a destination receiver device. The arrangement includes an echo canceller coupled to the TDM communication path and performing echo cancellation processing on the digitally encoded voice samples. The echo cancellation-processed voice sample signals are compressed by a data compression operator and applied to a packet encapsulating host processor via the TDM communication path. This obviates the necessity of the host processor having to use data bus cycles to download processed digitized voice samples.

REFERENCES:
patent: 6449269 (2002-09-01), Edholm
patent: 6526046 (2003-02-01), Carew
patent: 6580696 (2003-06-01), Chen et al.
patent: 6754221 (2004-06-01), Whitcher et al.
patent: 6868116 (2005-03-01), Ahmad
patent: 6879667 (2005-04-01), Carew et al.
patent: 2002/0071424 (2002-06-01), Chiu et al.
patent: 2003/0174694 (2003-09-01), Mitchell et al.
patent: 2003/0206625 (2003-11-01), Ahmad
patent: 2003/0235198 (2003-12-01), McElroy et al.
patent: 2003/0235199 (2003-12-01), Herron
patent: 2003/0235221 (2003-12-01), Gieger et al.
patent: 2004/0233902 (2004-11-01), Medhat

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