(19)

(11)

EP 0 611 498 A1

(12)

(43) Date of publication: 24.08.1994 Bulletin 1994/34 (21) Application number: 93919518.0 (22) Date of filing: 06.09.1993

(51) International Patent Classification (IPC):  H04B 7/ 005( . ) H04W 52/ 00( . ) H04W 52/ 08( . ) (86) International application number: PCT/GB1993/001882 (87) International publication number: WO 1994/006217 (17.03.1994 Gazette 1994/07)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 07.09.1992 GB 19920018876 (71) Applicant: LIBERTY COMMUNICATIONS LIMITED London SW8 5BL (GB)	(72) Inventor: ORMONDROYD, Richard Frank Bath, Avon BA2 7AY (GB) (74) Representative: Wells, David, et al  Gill Jennings & Every, Broadgate House, 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)