(19)

(11)

EP 0 842 588 A1

(12)

(43) Date of publication: 20.05.1998 Bulletin 1998/21 (21) Application number: 97908429.0 (22) Date of filing: 01.04.1997

(51) International Patent Classification (IPC):  H04J 13/ 02( . ) H04W 84/ 02( . ) H04B 1/ 04( . ) H04W 88/ 18( . ) (86) International application number: PCT/IB1997/000328 (87) International publication number: WO 1997/046032 (04.12.1997 Gazette 1997/52)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 29.05.1996 GB 19960011145 (71) Applicants: Philips Electronics N.V. 5621 BA Eindhoven (NL) PHILIPS NORDEN AB 164 85 Stockholm (SE)	(72) Inventor: MABEY, Peter, John NL-5656 AA Eindhoven (NL) (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)