Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Reexamination Certificate
2006-03-14
2006-03-14
Hudspeth, David (Department: 2651)
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
C360S048000
Reexamination Certificate
active
07012771
ABSTRACT:
A method of defining such a storage format in multiple data storage devices, each data storage device having a plurality of storage media and a plurality of corresponding data transducer heads, each transducer head for recording on and playback of information from a corresponding storage medium in at least one zone, wherein each zone includes a plurality of concentric tracks for recording on and playback of information. The method includes the steps of: selecting a plurality of said data storage devices; for each selected data storage device, measuring a record/playback performance capability of each head at one or more read/write frequencies per zone; based on said performance capability measurements, generating storage density distributions corresponding to at least a number of the heads in said selected data storage devices; selecting a group of read/write frequencies for said multiple data storage devices, two or more frequencies for each zone, based on said storage density distributions; and assigning one of said read/write frequencies to each head based on performance capability of that head.
REFERENCES:
patent: 4799112 (1989-01-01), Bremmer et al.
patent: 5216655 (1993-06-01), Hearn et al.
patent: 5521945 (1996-05-01), Knudson
patent: 5537264 (1996-07-01), Pinteric
patent: 5587850 (1996-12-01), Ton-that
patent: 5596458 (1997-01-01), Emo et al.
patent: 6091559 (2000-07-01), Emo et al.
patent: 6137644 (2000-10-01), Hetzler et al.
patent: 6182250 (2001-01-01), Ng et al.
U.S. Appl. No. 10/053,220, filed Jan. 17, 2002, Chiao et al.
Jensen, Roy A. et al.; “Demonstration of 500 Megabits per Square Inch with Digital Magnetic Recording;” IEEE Transactions on Magnetics; vol. 26; No. 5; Sep. 1990; pp. 2169-2171.
Asgari Saeed
Iszlai George
Vea Mathew
Davidson Dan I
Hansra Tejpal S.
Hudspeth David
Maxtor Corporation
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