(19)

(11)

EP 1 012 998 A2

(12)

(88) Date of publication A3: 23.07.1998 (43) Date of publication: 28.06.2000 Bulletin 2000/26 (21) Application number: 97947159.6 (22) Date of filing: 02.12.1997

(51) International Patent Classification (IPC)7: H04B 5/00 (86) International application number: PCT/GB9703/318 (87) International publication number: WO 9824/527 (11.06.1998 Gazette 1998/23)

(84) Designated Contracting States: AT BE CH DE ES FR GB IT LI LU NL PT (30) Priority: 02.12.1996 WO PCT/GB96/02975 (71) Applicant: Innovision Research & Technology Limited Wokingham,Berkshire RG40 2SJ (GB)	(72) Inventors: WHITE, Andrew David Spencers Wood,Berkshire RG7 1DY (GB) BORRETT, Marc Adrian Datchet,Berkshire SL3 9BN (GB) (74) Representative: Skone James, Robert Edmund  GILL JENNINGS & EVERYBroadgate House7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)