(19)

(11)

EP 1 817 775 A1

(12)

(43) Date of publication: 15.08.2007 Bulletin 2007/33 (21) Application number: 05802172.6 (22) Date of filing: 08.11.2005

(51) International Patent Classification (IPC):  G11B 27/34(2006.01) G06F 17/30(2006.01) G11B 27/034(2006.01) (86) International application number: PCT/IB2005/053663 (87) International publication number: WO 2006/056901 (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: 25.11.2004 GB 0426247 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventor: HALEY, Paul Philips Intell. Property & Standards Redhill, Surrey RH1 5HA (GB) (74) Representative: Groenendaal, Antonius W. M.  Philips Intellectual Property & Standards P.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)