(19)

(11)

EP 1 576 753 A2

(12)

(43) Date of publication: 21.09.2005 Bulletin 2005/38 (21) Application number: 03773121.3 (22) Date of filing: 06.10.2003

(51) International Patent Classification (IPC)7: H04L 1/00 (86) International application number: PCT/US2003/031416 (87) International publication number: WO 2004/034624 (22.04.2004 Gazette 2004/17)

(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 RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 07.10.2002 US 416705 P 02.10.2003 US 677621 (71) Applicant: LECROY CORPORATION New York 10977-6499 (US)	(72) Inventors: PUPALAIKIS, Peter, J. Ramsey, NJ 07446 (US) LAMARCHE, François  (US) (74) Representative: Turner, James Arthur  D Young & Co 120 Holborn London EC1N 2DY London EC1N 2DY (GB)