(19)

(11)

EP 1 042 893 A1

(12)

(43) Date of publication: 11.10.2000 Bulletin 2000/41 (21) Application number: 98959359.5 (22) Date of filing: 08.12.1998

(51) International Patent Classification (IPC)7: H04L 29/06, H04L 29/08, H04M 11/06, G06F 9/445, G06F 13/38 (86) International application number: PCT/SG9800/099 (87) International publication number: WO 9933/243 (01.07.1999 Gazette 1999/26)

(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: 19.12.1997 US 994279 (71) Applicant: Vivid Technology Pte. Ltd. Singapore 159835 (SG)	(72) Inventors: LEONG, Khai, Weng, Peter Singapore 600024 (SG) BHASKARAN, Sreedharan Singapore 680764 (SG) SURESH, Pillappa Singapore 760760 (SG) SHENG, Wang, Qing Singapore 680236 (SG) (74) Representative: Viering, Hans-Martin, Dipl.-Ing.  PatentanwälteViering, Jentschura & Partner,Postfach 22 14 43 80504 München 80504 München (DE)