(19)

(11)

EP 2 115 978 A2

(12)

(88) Date of publication A3: 09.10.2008 (43) Date of publication: 11.11.2009 Bulletin 2009/46 (21) Application number: 08728754.6 (22) Date of filing: 31.01.2008

(51) International Patent Classification (IPC):  H04L 12/66(2006.01) H04L 12/64(2006.01) (86) International application number: PCT/US2008/052701 (87) International publication number: WO 2008/095127 (07.08.2008 Gazette 2008/32)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR (30) Priority: 31.01.2007 US 898959 P (71) Applicant: Advanced Technologues Holdings, Inc. Palo Alto, CA 94303 (US)	(72) Inventors: YU, John, Z. Palo Alto, CA 94303 (US) HSU, David, Hsiongwei Great Neck, NY 11023 (US) ZHANG, Henry, Zili Cupertino, CA 95014 (US) (74) Representative: McLeish, Nicholas Alistair Maxwell  Boult Wade Tennant Verulam Gardens 70 Gray's Inn Road London WC1X 8BT London WC1X 8BT (GB)