(19)

(11)

EP 0 807 365 A1

(12)

(43) Date of publication: 19.11.1997 Bulletin 1997/47 (21) Application number: 96935198.0 (22) Date of filing: 29.10.1996

(51) International Patent Classification (IPC):  H04W 48/ 20( . ) (86) International application number: PCT/IB1996/001160 (87) International publication number: WO 1997/016940 (09.05.1997 Gazette 1997/20)

(84) Designated Contracting States: CH DE FR GB IT LI (30) Priority: 03.11.1995 GB 19950022581 (71) Applicant: PHILIPS ELECTRONICS N.V. 5621 BA Eindhoven (NL)	(72) Inventor: MABEY, Peter John Cambridge CB3 7EJ (GB) (74) Representative: Moody, Colin James, et al  Philips Electronics UK Limited Patents and Trade Marks Department Cross Oak Lane Redhill, Surrey RH1 5HA Redhill, Surrey RH1 5HA (GB)