(19)

(11)

EP 1 151 614 A1

(12)

(43) Date of publication: 07.11.2001 Bulletin 2001/45 (21) Application number: 00902787.1 (22) Date of filing: 11.02.2000

(51) International Patent Classification (IPC)7: H04N 7/26 (86) International application number: PCT/GB0000/454 (87) International publication number: WO 0048/401 (17.08.2000 Gazette 2000/33)

(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: 11.02.1999 GB 9903126 (71) Applicant: CENTRAL RESEARCH LABORATORIES LIMITED Hayes,Middlesex, UB3 1HH (GB)	(72) Inventor: YIN, Jia Hong London SW6 2RW (GB) (74) Representative: Sharp, Alan Cooper et al QED I.P. Services Limited,Dawley Road Hayes,Middlesex UB3 1HH Hayes,Middlesex UB3 1HH (GB)