System and method for WORM magnetic recording

Details System and method for WORM magnetic recording System and method for WORM magnetic recording

2006-01-03

2009-06-09

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Recording-or erasing-prevention

C360S066000, C360S075000

Reexamination Certificate

active

07545596

ABSTRACT:
WORM safeguards are provided in a magnetic disk drive in which the disks are pre-magnetized or pre-recorded such that all magnetic domains on each recording surface are completely aligned pointing in the same direction. A special write head which can magnetically write only in the direction opposite to the pre-magnetization orientation is also provided.

REFERENCES:
patent: 5020040 (1991-05-01), Lee
patent: 6636371 (2003-10-01), Komatsu et al.
patent: 6879454 (2005-04-01), Winarski et al.
patent: 7221639 (2007-05-01), Onoe et al.
patent: 2004158083 (2004-06-01), None
Yongge Wang and Yuliang Zheng, “Fast and Secure Magnetic WORM Storage Systems”; Department of Software and Information Systems University of North Carolina at Charlotte, Sep. 7, 2004.

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