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:
Feb. 24, 2026
Filed:
Nov. 08, 2023
Mitel Networks Corporation, Kanata, CA;
Mitel Networks Corporation, Kanata, CA;
Abstract
A device, system and method for cancelling echo at electronic devices are provided. The device comprises: a send path comprising a send input and output; a receive path comprising a receive input and output; an echo estimator engine that determines an estimate of echo, on the send path; a subtractor engine subtracts the estimated echo from a send signal received at the send input; a delay buffer engine; and an adder. The delay buffer engine provides, to the adder engine, a delayed-attenuated portion of a receive signal, received at the receive input, delayed by a given delay period corresponding to at least a delay of the echo between the receive path and the send input. The adder engine adds the delayed-attenuated portion to the send signal. The echo estimator engine determines the estimated echo using at least the delayed-attenuated portion of the receive signal added to the send signal.