(19)
(11)
EP 0 466 763 A1
(12)
(43)
Date of publication:
22.01.1992
Bulletin 1992/04
(21)
Application number:
90905598.0
(22)
Date of filing:
30.03.1990
(51)
International Patent Classification (IPC):
G06F
1/
00
( . )
G06F
21/
00
( . )
G06F
3/
08
( . )
G06F
21/
20
( . )
(86)
International application number:
PCT/GB1990/000478
(87)
International publication number:
WO 1990/012357
(
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:
01.04.1989
GB 19890007412
(71)
Applicant:
NIGHTHAWK ELECTRONICS LTD.
London WC2R 3AS (GB)
(72)
Inventor:
MURRAY, Douglas
Glasgow G4 0DT (GB)
(74)
Representative:
Brunner, Michael John, et al
GILL JENNINGS & EVERY Broadgate House 7 Eldon Street
London EC2M 7LH
London EC2M 7LH (GB)
(54)
COMPUTER SECURITY SYSTEM