(19)

(11)

EP 1 214 714 A1

(12)

(43) Date of publication: 19.06.2002 Bulletin 2002/25 (21) Application number: 00956722.3 (22) Date of filing: 04.09.2000

(51) International Patent Classification (IPC)7: G11C 13/04, G11B 7/24, G11C 25/00 (86) International application number: PCT/GB0003/380 (87) International publication number: WO 0118/817 (15.03.2001 Gazette 2001/11)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 03.09.1999 GB 9920891 03.09.1999 GB 9920893 (71) Applicant: Optidisc International Limited Grand Cayman (KY)	(72) Inventor: BURROUGHS, Trevor, Alan London SW16 5AB (GB) (74) Representative: Suèr, Steven Johannes et al Ablett & Stebbing,Caparo House,101-103 Baker Street London W1M 1FD London W1M 1FD (GB)