(19)

(11)

EP 1 530 842 A2

(12)

(88) Date of publication A3: 04.03.2004 (43) Date of publication: 18.05.2005 Bulletin 2005/20 (21) Application number: 03763464.9 (22) Date of filing: 10.07.2003

(51) International Patent Classification (IPC)7: H04J 14/08, H04L 12/423, H04L 12/437 (86) International application number: PCT/US2003/021630 (87) International publication number: WO 2004/006481 (15.01.2004 Gazette 2004/03)

(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: 10.07.2002 US 193714 10.07.2002 US 193717 10.07.2002 US 193731 (71) Applicant: I/O controls Corporation Azusa, CA 91702 (US)	(72) Inventors: WANG, Yongchang Diamond Bar, CA 91765 (US) YING, Jeffrey Glendora, CA 91740 (US) (74) Representative: Dunlop, Hugh Christopher et al R G C Jenkins & Co.26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)