Implementing enhanced track following during read back using head asymmetry metrics in hard disk drives

Implementing enhanced track following during read back using head asymmetry metrics in hard disk drives

A method, apparatus, and system are provided for implementing track following using signal asymmetry metrics monitored during read back in hard disk drives (HDDs). Signal asymmetry metrics monitored during read back are used together with a position error signal (PES) to correct and guide the positi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Galbraith, Richard Leo, Wood, Roger William, Taratorin, Alexander, Hanson, Weldon Mark, Nichols, Mark A
Format: Patent
Sprache:eng
Schlagworte:
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Beschreibung
Zusammenfassung:A method, apparatus, and system are provided for implementing track following using signal asymmetry metrics monitored during read back in hard disk drives (HDDs). Signal asymmetry metrics monitored during read back are used together with a position error signal (PES) to correct and guide the position of a read sensor with respect to a written track in the HDD.