(19)

(11)

EP 1 407 606 A1

(12)

(43) Date of publication: 14.04.2004 Bulletin 2004/16 (21) Application number: 02731483.0 (22) Date of filing: 23.04.2002

(51) International Patent Classification (IPC)7: H04N 7/173 (86) International application number: PCT/US2002/012930 (87) International publication number: WO 2002/087246 (31.10.2002 Gazette 2002/44)

(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: 24.04.2001 US 841792 25.06.2001 US 892017 19.10.2001 US 54008 (71) Applicant: Prediwave Corp. Fremont, CA 94539 (US)	(72) Inventor: HOANG, Khoi Pleasanton, CA 94566 (US) (74) Representative: Cross, Rupert Edward Blount et al BOULT WADE TENNANT,Verulam Gardens70 Gray's Inn Road London WC1X 8BT London WC1X 8BT (GB)