Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Reexamination Certificate
2011-08-02
2011-08-02
Wong, K. (Department: 2627)
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
Reexamination Certificate
active
07990640
ABSTRACT:
A method for determining motor spin direction of a hard disk drive is provided. The method includes forming an air inlet on a first sidewall of a disk drive base. The method further includes forming an air outlet on a second sidewall of the disk drive base wherein the air outlet comprises an airflow indicator coupled to the air outlet for indicating whether air is moving in or out of the air outlet. The method further includes rotating a disk drive motor inside the disk drive and determining the motor spin direction of the disk drive motor based on whether the air is moving in or out of the air outlet.
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Hitachi Global Storage Technologies - Netherlands B.V.
Wong K.
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