(19)

(11)

EP 0 409 830 A1

(12)

(43) Date of publication: 30.01.1991 Bulletin 1991/05 (21) Application number: 88903791.0 (22) Date of filing: 14.04.1988

(51) International Patent Classification (IPC):  G06F 1/ 24( . ) (86) International application number: PCT/EP1988/000314 (87) International publication number: WO 1989/009957 (19.10.1989 Gazette 1989/25)

(84) Designated Contracting States: DE FR GB IT SE (71) Applicant: ROBERT BOSCH GmbH D-70469 Stuttgart (DE)	(72) Inventors: BONITZ, Jörg D-7130 Mühlacker (DE) FÖRSTER, Siegmar D-7110 Öhringen (DE) ROHDE, Siegfried D-7141 Oberriexingen (DE)