(19)

(11)

EP 1 815 381 A1

(12)

(43) Date of publication: 08.08.2007 Bulletin 2007/32 (21) Application number: 05817859.1 (22) Date of filing: 24.11.2005

(51) International Patent Classification (IPC):  G06F 21/00(2006.01) (86) International application number: PCT/FI2005/000504 (87) International publication number: WO 2006/056646 (01.06.2006 Gazette 2006/22)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 24.11.2004 US 996801 25.11.2004 FI 20041517 (71) Applicant: Nokia Corporation 02150 Espoo (FI)	(72) Inventor: TARKKALA, Lauri FI-02660 Espoo (FI) (74) Representative: Simmelvuo, Markku Kalevi et al Papula Oy P.O. Box 981 00101 Helsinki 00101 Helsinki (FI)