(19)

(11)

EP 0 569 416 A1

(12)

(43) Date of publication: 18.11.1993 Bulletin 1993/46 (21) Application number: 92903487.0 (22) Date of filing: 28.01.1992

(51) International Patent Classification (IPC):  G09F 3/ 20( . ) G09F 9/ 35( . ) (86) International application number: PCT/GB1992/000152 (87) International publication number: WO 1992/012657 (06.08.1992 Gazette 1992/21)

(84) Designated Contracting States: BE DE ES FR GB IT LU NL (30) Priority: 28.01.1991 GB 19910001789 27.09.1991 GB 19910020668 (71) Applicant: CLARES-REGISBROOK SYSTEMS LIMITED Wells, Somerset BA5 1UT (GB)	(72) Inventor: MELLOR, Simon, c/o Clares-Regisbrook Systems Ltd. Wells, Somerset BA5 1UT (GB) (74) Representative: Perkins, Sarah, et al  Page White & Farrer, 54 Doughty Street London WC1N 2LS London WC1N 2LS (GB)