(19)

(11)

EP 1 224 766 A2

(12)

(88) Date of publication A3: 10.01.2002 (43) Date of publication: 24.07.2002 Bulletin 2002/30 (21) Application number: 00973385.8 (22) Date of filing: 24.10.2000

(51) International Patent Classification (IPC)7: H04L 9/30, H04L 9/00 (86) International application number: PCT/US0026/275 (87) International publication number: WO 0133/768 (10.05.2001 Gazette 2001/19)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 29.10.1999 US 162209 P 29.10.1999 US 162157 P 21.03.2000 US 193378 P (71) Applicant: Broadcom Corporation Irvine,California 92619-7013 (US)	(72) Inventor: JOHNSON, Anders San Jose, CA 94124 (US) (74) Representative: Robinson, John Stuart et al Marks & Clerk,4220 Nash Court,Oxford Business Park South Oxford OX4 2RU Oxford OX4 2RU (GB)