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:
Aug. 29, 2000
Filed:
Jun. 19, 1997
Thomas M Kaplan, Allen, TX (US);
Alcatel USA Sourcing, L.P., Plano, TX (US);
Abstract
An echo canceler (10) includes an idle code density detector (12) that measures an idle code density over a period of time. The idle code density detector (12) includes an idle code detector (30) that identifies idle codes and non-idle codes. An idle code integrator (32) increments an idle code count (36) by a first weight factor (38) for each idle code identified by the idle code detector (30). The idle code integrator (32) decrements the idle code count (36) by a second weight factor (40) for each non-idle code identified by the idle code detector (30). A threshold detector (34) continuously compares the idle code count (36) to a threshold value (42). When the idle code count (36) exceeds the threshold value (42), the threshold detector (34) generates a control signal (22) to disable an adaptive filter (14) and a processor (18) of the echo canceler (10).