(19)

(11)

EP 1 295 464 A1

(12)

(43) Date of publication: 26.03.2003 Bulletin 2003/13 (21) Application number: 01948697.6 (22) Date of filing: 21.06.2001

(51) International Patent Classification (IPC)7: H04N 1/21, H04N 1/00 (86) International application number: PCT/US0120/197 (87) International publication number: WO 0109/9407 (27.12.2001 Gazette 2001/52)

(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: 22.06.2000 US 602634 25.01.2001 US 771446 01.06.2001 US 871997 (71) Applicant: Radvault, Inc. Hayward, CA 94545 (US)	(72) Inventors: ROTHSCHILD, Peter Alden Hayward, CA 94545 (US) PRASAD, Vijendra Guru Raaj Hayward, CA 94545 (US) WEIR, William M. M. Hayward, CA 94545 (US) (74) Representative: Merryweather, Colin Henry  J.A. Kemp & Co.14 South SquareGray's Inn London WC1R 5JJ London WC1R 5JJ (GB)