ECHO CANCELER AND ITS LEARNING METHOD

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EP 0 708 536 B8

(12)	CORRECTED EUROPEAN PATENT SPECIFICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 B1)

(48)	Corrigendum issued on:
	13.09.2006 Bulletin 2006/37

(45)	Mention of the grant of the patent:
	26.07.2006 Bulletin 2006/30

(21)	Application number: 95917503.5

(22)	Date of filing: 02.05.1995

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International Patent Classification (IPC):

H04B 3/23^(2006.01)
H03H 21/00^(2006.01)

H04M 1/60^(2006.01)

(86)	International application number:
	PCT/JP1995/000865

(87)	International publication number:
	WO 1995/031051 (16.11.1995 Gazette 1995/49)

(54)	ECHO CANCELER AND ITS LEARNING METHOD ECHOKOMPENSATOR UND DESSEN LERNVERFAHREN COMPENSATEUR D'ECHO ET SON PROCEDE D'APPRENTISSAGE

(84)	Designated Contracting States:
	DE FR GB IT SE

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Priority:

07.05.1994 JP 11758894
07.05.1994 JP 11759294
07.05.1994 JP 11759394
07.05.1994 JP 11759494

(43)	Date of publication of application:
	24.04.1996 Bulletin 1996/17

(73)	Proprietor: NTT MOBILE COMMUNICATIONS NETWORK INC.
	Minato-ku, Tokyo 105-8436 (JP)

(72)	Inventors:
	KAWAHARA, Toshiro Kanagawa 238-03 (JP) MIKI, Toshio H-1005, Fureaino-machi Kanagawa 236 (JP) OHYA, Tomoyuki Kanagawa 238-03 (JP)

(74)	Representative: Winter, Brandl, Fürniss, Hübner Röss, Kaiser, Polte Partnerschaft Patent- und Rechtsanwaltskanzlei
	Alois-Steinecker-Strasse 22 85354 Freising 85354 Freising (DE)

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References cited: :

WO-A-93/09611
JP-A- 57 033 844
JP-A- 59 070 398
JP-A- 62 116 025
US-A- 4 594 479

JP-A- 57 003 441
JP-A- 59 049 027
JP-A- 61 071 727
US-A- 4 144 417
US-A- 5 164 989

PATENT ABSTRACTS OF JAPAN vol. 0183, no. 18 (E-1562), 16 June 1994 (1994-06-16) & JP 6 069834 A (MITSUBISHI ELECTRIC CORP), 11 March 1994 (1994-03-11)
MUELLER K H: "A NEW DIGITAL ECHO CANCELER FOR TWO-WIRE FULL-DUPLEX DATA TRANSMISSION" IEEE TRANSACTIONS ON COMMUNICATIONS, IEEE INC. NEW YORK, US, vol. COM-24, no. 9, September 1976 (1976-09), pages 956-962, XP000983798 ISSN: 0090-6778
COUTURIER C ET AL: "ECHO-CANCELLER PROTOCOL WITHIN A DIGITAL TELEPHONE NETWORK" IBM TECHNICAL DISCLOSURE BULLETIN, IBM CORP. NEW YORK, US, vol. 27, no. 7A, December 1984 (1984-12), pages 3848-3849, XP000843814 ISSN: 0018-8689

Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).