(19)

(11)

EP 0 296 216 A1

(12)

(43) Date of publication: 28.12.1988 Bulletin 1988/52 (21) Application number: 88900774.0 (22) Date of filing: 06.01.1988

(51) International Patent Classification (IPC):  G06F 9/ 44( . ) G06N 5/ 04( . ) G06N 5/ 02( . ) (86) International application number: PCT/GB1988/000005 (87) International publication number: WO 1988/005195 (14.07.1988 Gazette 1988/15)

(84) Designated Contracting States: DE FR GB IT SE (30) Priority: 06.01.1987 GB 19870000188 (71) Applicant: Hewlett-Packard Limited Wokingham, Berkshire RG11 3LL (GB)	(72) Inventors: BLACK, Damian, Sean Hewlett-Packard Limited Bristol 12 6QZ (GB) MANLEY, John, Cyril Hewlett-Packard Limited Bristol 12 6QZ (GB) (74) Representative: Squibbs, Robert Francis  Hewlett-Packard Limited Cain Road Bracknell, Berkshire RG12 1HN Bracknell, Berkshire RG12 1HN (GB)