The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 2006
Filed:
Mar. 12, 2002
Ayman Ghobrial, Huntsville, AL (US);
Jerry Lynn Greer, Huntsville, AL (US);
Bruce Edward Mitchell, Madison, AL (US);
Paul Graves Mcelroy, Huntsville, AL (US);
Ayman Ghobrial, Huntsville, AL (US);
Jerry Lynn Greer, Huntsville, AL (US);
Bruce Edward Mitchell, Madison, AL (US);
Paul Graves McElroy, Huntsville, AL (US);
Adtran, Inc., Huntsville, AL (US);
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.