(19)

(11)

EP 1 105 793 A1

(12)

(43) Date of publication: 13.06.2001 Bulletin 2001/24 (21) Application number: 99943848.4 (22) Date of filing: 20.08.1999

(51) International Patent Classification (IPC)7: G06F 9/30 (86) International application number: PCT/US9919/197 (87) International publication number: WO 0011/547 (02.03.2000 Gazette 2000/09)

(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: 21.08.1998 US 97515 P (71) Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY PasadenaCalifornia 91125 (US)	(72) Inventors: MANOHAR, RajitCalifornia Institute of Technology Pasadena, CA 91125 (US) MARTIN, AlainCalifornia Institute of Technology Pasadena, CA 91125 (US) (74) Representative: Lloyd, Patrick Alexander Desmond et al Reddie & Grose16 Theobalds Road London WC1X 8PL London WC1X 8PL (GB)