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:
Jun. 30, 2009
Filed:
Jun. 27, 2000
Grégolre Le Tourneur, Saint-Quay-Perros, FR;
David Deleam, Perros Guirec, FR;
Grégolre Le Tourneur, Saint-Quay-Perros, FR;
David Deleam, Perros Guirec, FR;
France Telecom, Paris, FR;
Abstract
The invention relates to a real time processing and management method for canceling out the echo between a loudspeaker (HP) and a microphone (M) of a computer terminal. Said method consists of establishing the loudspeaker signal or the microphone signal as a reference signal and synchronizing (A) the other signal with said reference signal, and (B) synchronizing the acquisition and audio reestablishment tasks. The delay that exists (re) between the other signal and the reference signal is measured (C) and the existing delay value (re) is validated (D) in order to control the delay applied to the reference signal starting from the current delay (re). The invention can be used for computer terminals which are equipped with multi-tasks operating systems.