MAGNETIC RECORDING/REPRODUCING APPARATUS

PURPOSE:To prolong the life of an MR element by setting a value of a sense current supplied to a magnetoresistance effect element (MR element) when servo data are read out from a magnetic recording medium to be smaller than a value of the sense current when data are read out. CONSTITUTION:Respective...

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Bibliographische Detailangaben
Hauptverfasser:	SHIMIZU KOICHI, MIYATAKE MASAMITSU, TANABE HIDEO, SAITO SHIGEYOSHI, HATA YUJI
Format:	Patent
Sprache:	eng
Schlagworte:	INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS
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Beschreibung
Zusammenfassung:	PURPOSE:To prolong the life of an MR element by setting a value of a sense current supplied to a magnetoresistance effect element (MR element) when servo data are read out from a magnetic recording medium to be smaller than a value of the sense current when data are read out. CONSTITUTION:Respective currents to be supplied to a magnetoresistance effect element of a magnetic head 1 when a servo segment as a first data-recording part of a sector on a magnetic recording medium 2 is read and when a data segment as a second data-recording part is read out, are switched to Isv and Ist by a sense current-switching function 25 (optimum value: to minimize asymmetry of a reproduced waveform), so that Isv