Method and apparatus for magnetization test of write head in...

Details Method and apparatus for magnetization test of write head in... Method and apparatus for magnetization test of write head in...

2005-08-10

2008-08-12

Wellington, Andrea (Department: 2627)

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

C360S066000

Reexamination Certificate

active

07411753

ABSTRACT:
A disk drive of a perpendicular magnetic recording system has a magnetization test function, for testing the magnetized state of a write head. The disk drive is provided with a write driver and a head amplifier unit. The write driver supplies a write current to the write head, for perpendicular magnetic recording. The degaussing unit degausses the write head.

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Australian Search Report dated Apr. 28, 2006 for Singapore Appln. No. 200504937-4.

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