(19)

(11)

EP 1 210 669 A1

(12)

(43) Date of publication: 05.06.2002 Bulletin 2002/23 (21) Application number: 99946569.3 (22) Date of filing: 25.08.1999

(51) International Patent Classification (IPC)7: G06F 15/80, G06K 9/66 (86) International application number: PCT/SG9900/089 (87) International publication number: WO 0114/992 (01.03.2001 Gazette 2001/09)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: Kent Ridge Digital Labs Singapore 119613 (SG)	(72) Inventors: TAN, Ah, Hwee Singapore 521892 (SG) LAI, Fon, Lin Singapore 249058 (SG) (74) Representative: Howe, Steven  Lloyd Wise, Tregear & Co.,Commonwealth House,1-19 New Oxford Street London WC1A 1LW London WC1A 1LW (GB)