Dynamic magnetic information storage or retrieval – General processing of a digital signal – Pulse crowding correction
Reexamination Certificate
2011-07-05
2011-07-05
Negrón, Daniell L (Department: 2627)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Pulse crowding correction
Reexamination Certificate
active
07974032
ABSTRACT:
A system for identifying and compensating for non-linear transition shift in a magnetic medium data storage device is disclosed. The non-linear transition shift compensation system includes a non-linear transition shift estimation module adapted to generate non-linear transition shift estimates for specific bit patterns. The system further includes a pre-compensation module adapted to adjust the temporal spacing of binary transitions written to the magnetic medium based on the non-linear transition shift estimates generated by the non-linear transition shift estimation module for specific bit patterns corresponding to bit patterns appearing in the data being written to the magnetic medium.
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patent: 6212024 (2001-04-01), Igarashi et al.
patent: 7158324 (2007-01-01), Stein et al.
Han Ke
Madden Michael
Song Hongwei
Wu Zining
Marvell International Ltd.
Negrón Daniell L
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