(19)

(11)

EP 0 602 228 A1

(12)

(43) Date of publication: 22.06.1994 Bulletin 1994/25 (21) Application number: 93915434.0 (22) Date of filing: 21.06.1993

(51) International Patent Classification (IPC):  H04B 10/ 10( . ) (86) International application number: PCT/US1993/005907 (87) International publication number: WO 1994/001942 (20.01.1994 Gazette 1994/03)

(84) Designated Contracting States: DE ES GB (30) Priority: 01.07.1992 US 19920904468 (71) Applicant: MOTOROLA, INC. Schaumburg, IL 60196 (US)	(72) Inventors: EASTMOND, Bruce, C. Downers Grove, IL 60516 (US) RACHID, Alameh Schaumburg, IL 60195 (US) FREEBURG, Thomas, A. Arlington Heights, IL 60004 (US) (74) Representative: Hudson, Peter David  MOTOROLA European Intellectual Property Operations Jays Close Viables Industrial Estate Basingstoke Hants RG22 4PD Basingstoke Hants RG22 4PD (GB)