Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2006-11-14
2006-11-14
Wong, K. (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S078090
Reexamination Certificate
active
07136257
ABSTRACT:
An apparatus and method of maintaining stability in a servo loop of a disc drive is provided. A dither signal (a single frequency sine wave or a multi-frequency signal) is injected into the servo loop. A servo loop gain error signal is obtained in response to the injected dither signal. A gain of the servo loop is adjusted as a function of the servo loop gain error signal in real-time.
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Microsoft Press Computer Dictionary 3rd Ed.
Cvancara Dustin Mark
Morris John Christopher
Sosseh Raye Abdoulie
Zhang Tao
Lucente David K.
Seagate Technology LLC
Wong K.
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