(19)

(11)

EP 0 408 620 A1

(12)

(43) Date of publication: 23.01.1991 Bulletin 1991/04 (21) Application number: 89903785.0 (22) Date of filing: 03.03.1989

(51) International Patent Classification (IPC):  H04N 5/ 253( . ) H04N 3/ 36( . ) H04N 1/ 407( . ) H04N 5/ 257( . ) (86) International application number: PCT/GB1989/000240 (87) International publication number: WO 1989/008365 (08.09.1989 Gazette 1989/21)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 04.03.1988 GB 19880005219 (71) Applicant: RANK CINTEL LIMITED Ware Hertfordshire SG12 OAE (GB)	(72) Inventor: TERENCE, William, Mead Hertfordshire (GB) (74) Representative: Harland, Linda Jane, et al  c/o Reddie & Grose 16 Theobalds Road London WC1X 8PL London WC1X 8PL (GB)