(19)

(11)

EP 0 270 524 A1

(12)

(43) Date of publication: 15.06.1988 Bulletin 1988/24 (21) Application number: 85904399.0 (22) Date of filing: 29.08.1985

(51) International Patent Classification (IPC):  G09F 9/ 30( . ) G09G 3/ 22( . ) G09G 3/ 00( . ) (86) International application number: PCT/AU1985/000205 (87) International publication number: WO 1987/001493 (12.03.1987 Gazette 1987/06)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (71) Applicant: RAN DATA PTY. LTD. Perth, W.A. 6000 (AU)	(72) Inventors: ROSS, John Dalkeith, W.A. 6009 (AU) SALA-SPINI, Amedeo, Filiberto Dianella, W.A. 6062 (AU) (74) Representative: Enskat, Michael Antony Frank  Saunders & Dolleymore 9, Rickmansworth Road Watford Hertfordshire WD1 7HE Watford Hertfordshire WD1 7HE (GB)