(19)

(11)

EP 0 880 777 A1

(12)

(43) Date of publication: 02.12.1998 Bulletin 1998/49 (21) Application number: 97910604.0 (22) Date of filing: 20.11.1997

(51) International Patent Classification (IPC):  G11B 7/ 24( . ) G11B 7/ 007( . ) G11B 7/ 005( . ) G11B 7/ 00( . ) G11B 7/ 09( . ) (86) International application number: PCT/IB1997/001470 (87) International publication number: WO 1998/024089 (04.06.1998 Gazette 1998/22)

(84) Designated Contracting States: DE FR GB (30) Priority: 25.11.1996 EP 19960203318 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventors: SPRUIT, Johannes, Hendrikus, Maria NL-5656 AA Eindhoven (NL) DUCHATEAU, Johan, Philippe, William, Beatrice NL-5656 AA Eindhoven (NL) (74) Representative: Visser, Derk, et al  INTERNATIONAAL OCTROOIBUREAU B.V., Prof. Holstlaan 6 5656 AA Eindhoven 5656 AA Eindhoven (NL)