(19)

(11)

EP 0 371 034 A1

(12)

(43) Date of publication: 06.06.1990 Bulletin 1990/23 (21) Application number: 88905495.0 (22) Date of filing: 27.05.1988

(51) International Patent Classification (IPC):  G06F 3/ 06( . ) G06F 13/ 00( . ) G11B 20/ 12( . ) G06F 11/ 14( . ) G11B 20/ 10( . ) G06F 11/ 16( . ) (86) International application number: PCT/US1988/001697 (87) International publication number: WO 1989/000312 (12.01.1989 Gazette 1989/02)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 02.07.1987 US 19870069132 (71) Applicant: EXABYTE CORPORATION Boulder, CO 80301 (US)	(72) Inventors: BEAVERS, Kelly, J. Boulder, CO 80303 (US) PISCIOTTA, E., Christopher Louisville, CO 80027 (US) (74) Representative: Mittler, Enrico  c/o Marchi & Mittler s.r.l. Viale Lombardia, 20 I-20131 Milano I-20131 Milano (IT)