(19)

(11)

EP 1 728 170 A2

(12)

(88) Date of publication A3: 02.03.2006 (43) Date of publication: 06.12.2006 Bulletin 2006/49 (21) Application number: 05718562.1 (22) Date of filing: 19.03.2005

(51) International Patent Classification (IPC):  G06F 13/42(2006.01) (86) International application number: PCT/IB2005/051031 (87) International publication number: WO 2005/091156 (29.09.2005 Gazette 2005/39)

(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 MC NL PL PT RO SE SI SK TR (30) Priority: 19.03.2004 US 554504 P (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventor: EVOY, David, R. San Jose, CA 95131-1706 (US) (74) Representative: de Haan, Poul Erik et al Philips Intellectual Property & Standards Postbus 220 NL-5600 AE Eindhoven NL-5600 AE Eindhoven (NL)