(19)
(11)
EP 0 265 487 A1
(12)
(43)
Date of publication:
04.05.1988
Bulletin 1988/18
(21)
Application number:
87902950.0
(22)
Date of filing:
24.03.1987
(51)
International Patent Classification (IPC):
G11B
5/
58
( . )
G11B
5/
02
( . )
G11B
5/
53
( . )
G01R
33/
00
( . )
G11B
5/
49
( . )
G11B
15/
18
( . )
(86)
International application number:
PCT/US1987/000651
(87)
International publication number:
WO 1987/006048
(
08.10.1987
Gazette 1987/22)
(84)
Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE
(30)
Priority:
24.03.1986
US 19860843453
(71)
Applicant:
AMPEX CORPORATION
Redwood City California 94063-3199 (US)
(72)
Inventor:
GOOCH, Beverley, R.
Sunnyvale, CA 94087 (US)
(74)
Representative:
Horton, Andrew Robert Grant, et al
BOWLES HORTON Felden House Dower Mews High Street
Berkhamsted Hertfordshire HP4 2BL
Berkhamsted Hertfordshire HP4 2BL (GB)
(54)
MAGNETICALLY CONTROLLED SCANNING MAGNETIC HEAD TRACKING CONTROL SYSTEM