(19)
(11) EP 0 138 947 A1

(12)

(43) Date of publication:
02.05.1985 Bulletin 1985/18

(21) Application number: 84901476.0

(22) Date of filing: 05.03.1984
(51) International Patent Classification (IPC): 
G11B 7/ 085( . )
G11B 27/ 32( . )
 G11B 21/ 08( . )
(86) International application number:
PCT/US1984/000339
(87) International publication number:
WO 1984/003583 (13.09.1984 Gazette 1984/22)
(84) Designated Contracting States:
FR GB NL

(30) Priority: 07.03.1983 US 19830472436

(71) Applicant: STORAGE TECHNOLOGY PARTNERS II
Louisville Colorado 80028 (US)

(72) Inventor:
  • DEAN, Robert, E.
    Boulder, CO 80303 (US)

   


(54) SYSTEM FOR SENSING THE ROTATIONAL POSITION OF A ROTATING DISK HAVING COARSE SEEK TRACKS