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(11)

EP 0 642 723 A1

(12)

(43) Date of publication: 15.03.1995 Bulletin 1995/11 (21) Application number: 93911891.0 (22) Date of filing: 29.04.1993

(51) International Patent Classification (IPC):  H04N 5/ 367( . ) H04N 5/ 349( . ) (86) International application number: PCT/GB1993/000896 (87) International publication number: WO 1993/025043 (09.12.1993 Gazette 1993/29)

(84) Designated Contracting States: DE FR GB IT NL (30) Priority: 29.05.1992 GB 19920011566 (71) Applicant: THE SECRETARY of STATE for DEFENCE in HER BRITANNIC MAJESTY'S GOVERNMENT Farnborough, Hants GU14 6TD (GB)	(72) Inventor: MANNING, Paul Anthony Droitwich, Worcester. WR9 8AS (GB) (74) Representative: Beckham, Robert William, et al  Defence Research Agency Intellectual Property Department DRA Farnborough R69 Building Farnborough, Hants. GU14 6TD Farnborough, Hants. GU14 6TD (GB)