Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2005-08-02
2005-08-02
Tran, Sinh (Department: 2651)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S069000
Reexamination Certificate
active
06924956
ABSTRACT:
A method for controlling head loading/unloading operations in a magnetic disk drive apparatus that can perform a head retracting operation by using a reserve power source in order to retract head elements to a predetermined rest position even when a primary power source has shut down during the operation of the apparatus has been developed. In order to guarantee proper power off unloading of head elements at a shutdown time of the primary power source, a system within the magnetic disk apparatus judges, prior to start the head loading control, whether a sufficient electric power is secured in a reserve system in order to retract the head elements to a predetermined rest position if a shutdown of the power source occurs.
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Kabushiki Kaisha Toshiba
Pillsbury Winthrop Shaw & Pittman LLP
Tran Sinh
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