Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1996-06-27
1999-03-30
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 69, G11B 555
Patent
active
058896295
ABSTRACT:
A system for powering a disk drive microprocessor using the back electromotive force (BEMF) generated by the still-spinning spindle motor after host DC power fails, and for parking the heads under microprocessor control in a manner similar to that of a conventional seek. The system detects failing host computer DC power, converts the BEMF to DC, applies the DC power to the microprocessor, and moves the heads toward the parking zone under microprocessor control in accordance with a seek profile or other suitable control method of a type conventionally used for seeking. Thus, the heads travel to the parking zone at controlled velocities that minimize the travel or seek time.
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Psitos Aristotelis M.
Shara, Esq. Milad G.
Western Digital Corporation
Wong K.
Young, Esq. Leo J.
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