(19)

(11)

EP 0 466 814 A1

(12)

(43) Date of publication: 22.01.1992 Bulletin 1992/04 (21) Application number: 90906531.0 (22) Date of filing: 02.04.1990

(51) International Patent Classification (IPC):  G06F 1/ 03( . ) G06F 7/ 533( . ) G06F 7/ 52( . ) G06F 7/ 535( . ) (86) International application number: PCT/US1990/001707 (87) International publication number: WO 1990/012361 (18.10.1990 Gazette 1990/24)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 10.04.1989 US 19890335319 (71) Applicant: MOTOROLA INC. Schaumburg Illinois 60196 (US)	(72) Inventors: OOMS, William, J. Ft. Lauderdale, FL 33309 (US) LEITCH, Clifford, D. Coral Springs, FL 33071 (US) DELGADO, Rene, M. Sunrise, FL 33351 (US) (74) Representative: Dunlop, Hugh Christopher, et al  Motorola, European Intellectual Property, Midpoint, Alencon Link Basingstoke, Hampshire RG21 7PL Basingstoke, Hampshire RG21 7PL (GB)