(19)

(11)

EP 1 257 943 A1

(12)

(43) Date of publication: 20.11.2002 Bulletin 2002/47 (21) Application number: 00928097.5 (22) Date of filing: 13.04.2000

(51) International Patent Classification (IPC)7: G06F 17/60, G06F 12/08, G06F 9/44 (86) International application number: PCT/SG0000/073 (87) International publication number: WO 0107/1599 (27.09.2001 Gazette 2001/39)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 18.03.2000 SG 1262 (71) Applicant: Kent Ridge Digital Labs Singapore 119613 (SG)	(72) Inventors: PANG, Hwee, Hwa Singapore 436917 (SG) LEONG, Mun, Kew Singapore 588137 (SG) (74) Representative: Finnie, Peter John  Gill Jennings & Every,Broadgate House,7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)