1 January 2005 Second-harmonic magnetoresistive imaging to authenticate and recover data from magnetic storage media
Author Affiliations +
J. of Electronic Imaging, 14(1), 013015 (2005). doi:10.1117/1.1866150
Abstract
A scanning magnetoresistive (MR) microscope is developed for high-resolution imaging of magnetic tapes and digital media. Second-harmonic detection is used to remove thermal anomalies. We are able to image sufficient lengths of tape for authentication purposes and for data recovery from damaged samples. The second-harmonic technique provides high-contrast magnetic images of the magnetic storage media using high-resolution MR sensors from commercial hard disk drives. These images can be directly converted into the originally recorded analog audio waveforms or digital data.
David P. Pappas, A. V. Nazarov, D. Stevenson, Stephen D. Voran, Michael E. Read, E. M. Gormley, Jim Cash, Ken Marr, James J. Ryan, "Second-harmonic magnetoresistive imaging to authenticate and recover data from magnetic storage media," Journal of Electronic Imaging 14(1), 013015 (1 January 2005). https://doi.org/10.1117/1.1866150
JOURNAL ARTICLE
6 PAGES


SHARE
RELATED CONTENT

High-bandwidth recording in a hostile environment
Proceedings of SPIE (December 01 1991)
Optical And Magnetic Storage Products - 1990
Proceedings of SPIE (November 10 1983)
Read heads for magnetic tapes
Proceedings of SPIE (January 15 1996)
Design methodology for high-density read equalization
Proceedings of SPIE (January 15 1996)

Back to Top