Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data verification
Reexamination Certificate
2005-09-20
2005-09-20
Hudspeth, David (Department: 2651)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data verification
C360S031000, C360S039000, C360S025000
Reexamination Certificate
active
06947234
ABSTRACT:
Provided are a method, system, and program for performing error correction in a storage device having a magnetic storage medium. A plurality of zones are defined in the magnetic storage medium, wherein each zone comprises a plurality of addressable locations in the magnetic storage medium. A determination is made as to whether a change of a signal-to-noise ratio for one subject zone of the plurality of zones exceeds a threshold. An operation is performed to improve the signal-to-noise ratio with respect to the subject zone of the magnetic storage medium after determining that the change of the signal-to-noise ratio exceeds the threshold.
REFERENCES:
patent: 5265082 (1993-11-01), Gniewek et al.
patent: 5392290 (1995-02-01), Brown et al.
patent: 6266199 (2001-07-01), Gillis et al.
patent: 6266201 (2001-07-01), Dahlerud et al.
patent: 6359744 (2002-03-01), Mallary
patent: 6429984 (2002-08-01), Alex
patent: 6700723 (2004-03-01), Li
patent: 2001/0010603 (2001-08-01), Uzumaki et al.
patent: 2355106 (2001-04-01), None
patent: 6062635 (1994-02-01), None
patent: 2000099905 (2000-04-01), None
IBM, “Prevention of Hard Errors in Magnetic Files Due to Long Term Degradation”, IBM Technical Disclosure Bulletin, vol. 29, No. 10, Mar. 1987, pp. 4577-4578.
IBM, “Preventative Rewrites”, IBM Technical Disclosure Bulletin, vol. 33, No. 12, May 1991, pp. 331-332.
IBM Corp., “IBM Research News” [online], 2001, pp. 1-4, [Retrieved on Apr. 12, 2002]. Retrieved from the Internet at <URL: http://www.research.ibm.com/resources
ews/20010518_whitepaper.shtml>.
D.A. Thompson, et al., “The Future of Magnetic Data Storage Technology”, IBM J. Res. Develop., vol. 44, No. 3, May 2000, pp. 311-322.
J.R. Hoinville, “Thermal Decay of Longitudinal Recording Media with Irregular Grain Shapes”, Manuscript, [online] Oct. 2000, pp. 1-3. Retrieved from the Internet at <URL: http://www.euxime.com/FR11.pdf>.
Lamberts Bernd
McConnell William Harlow
Polcyn Adam Daniel
Wang Frank J.
Figueroa Natalia
Hudspeth David
Konrad Raynes & Victor LLP
Victor David W.
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