Media noise low-fly height test for a disc drive

Details Media noise low-fly height test for a disc drive Media noise low-fly height test for a disc drive

2006-09-26

2006-09-26

Young, Wayne (Department: 2627)

Dynamic magnetic information storage or retrieval

Checking record characteristics or modifying recording...

C360S031000, C360S073030, C360S075000

Reexamination Certificate

active

07113354

ABSTRACT:
Method and apparatus for characterizing the flight characteristics of a read/write head. A disc is accelerated to a selected rotational velocity sufficient to aerodynamically support the head. The head is positioned over a portion of the disc non-accessible to customer data and a magnetoresistive element of the read/write is biased using a suitable voltage or current. A media noise landing signature obtained as the element transduces white noise from the surface identifies the head as a low-flying head.

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