(19)

(11)

EP 1 068 722 A1

(12)

(43) Date of publication: 17.01.2001 Bulletin 2001/03 (21) Application number: 99914667.3 (22) Date of filing: 06.04.1999

(51) International Patent Classification (IPC)7: H04N 5/217, H04N 5/213 (86) International application number: PCT/GB9901/043 (87) International publication number: WO 9952/275 (14.10.1999 Gazette 1999/41)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IE IT LI NL SE (30) Priority: 03.04.1998 GB 9807296 (71) Applicant: SNELL & WILCOX LIMITED Twickenham, Middlesex TW1 1RQ (GB)	(72) Inventors: STEINBERG, Avigdor Petersfield,Hampshire GU32 3LS (GB) BREATHNACH, Liam EmsworthHampshire PO10 7RA (GB) (74) Representative: Garratt, Peter Douglas et al Mathys & Squire100 Grays Inn Road London WC1X 8AL London WC1X 8AL (GB)