(19)

(11)

EP 1 397 757 A2

(12)

(88) Date of publication A3: 24.12.2003 (43) Date of publication: 17.03.2004 Bulletin 2004/12 (21) Application number: 00993551.1 (22) Date of filing: 20.12.2000

(51) International Patent Classification (IPC)7: G06F 17/30 (86) International application number: PCT/US2000/035183 (87) International publication number: WO 2001/046866 (28.06.2001 Gazette 2001/26)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 20.12.1999 US 468263 (71) Applicant: Acta Technology, Inc. Palo Alto, CA 94303 (US)	(72) Inventors: CHAWLA, Sachinder, S. San Francisco, CA 94109 (US) GORELIK, Alexander Fremont, CA 94539 (US) GANTIMAHAPATRUNI, Sridhar Alameda, CA 94502 (US) (74) Representative: Kazi, Ilya  Mathys & Squire,100 Gray's Inn Road London WC1X 8AL London WC1X 8AL (GB)