Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of biasing or erasing
Reexamination Certificate
2011-01-25
2011-01-25
Negrón, Daniell L (Department: 2627)
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of biasing or erasing
C361S149000, C361S267000
Reexamination Certificate
active
07876519
ABSTRACT:
A method for erasing a disk of a hard disk drive. The method includes moving the hard disk drive adjacent to an erasure head that emanates a magnetic field. The magnetic field and moving hard disk drive cause a disk of the hard disk drive to spin under a Lorentz force created by the magnetic field and moving disk. The magnetic field is applied by the erasure head for a duration that causes erasure of the entire disk. The spindle motor is not activated during the entire process. Not activating the spindle motor eliminates any Faraday coupling from the erasure head into the motor.
REFERENCES:
patent: 2005/0073766 (2005-04-01), Price et al.
patent: 2007/0014044 (2007-01-01), Kitamura et al.
patent: 2008/0013245 (2008-01-01), Schultz et al.
Fast Erase for Direct Access Storage Devices, Feb. 1, 1994, IBM Technical Disclosure Bulletin, vol. 37, Issue No. 2A, pp. 419-420.
Che Carl Xiaodong
Chen Shuo-Hao
Cho Keung Youn
Hong Soo-Youl
Holder Regina N
Irell & Manella LLP
Negrón Daniell L
Samsung Electronics Co,. Ltd.
Yorks Ben J.
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