ECHO CANCELLATION DEVICE INCLUDING A DOUBLE TALK DETECTOR - Patent 1590894

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EP 1 590 894 A1

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(43)	Date of publication:
	02.11.2005 Bulletin 2005/44

(21)	Application number: 03702929.5

(22)	Date of filing: 03.02.2003

(51)	International Patent Classification (IPC)⁷: H04B 3/23

(86)	International application number:
	PCT/IB2003/000667

(87)	International publication number:
	WO 2004/070969 (19.08.2004 Gazette 2004/34)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
	Designated Extension States:
	AL LT LV MK RO

(71)	Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
	164 83 Stockholm (SE)

(72)	Inventor:
	TOPALOVIC, Dragan Ballymahon Road,Athlone (IE)

(74)	Representative: Tonscheidt, Andreas et al
	Ericsson GmbH Ericsson Allee 1 52134 Herzogenrath 52134 Herzogenrath (DE)

(54)	ECHO CANCELLATION DEVICE INCLUDING A DOUBLE TALK DETECTOR