Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of biasing or erasing
Patent
1999-07-09
2000-05-30
Hindi, Nabil
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of biasing or erasing
360 46, 360 61, 360113, G11B 1512, G11B 502, G11B 509, G11B 5127
Patent
active
060697628
ABSTRACT:
In a magnetic recording drive having a plurality of magnetic heads each employing a magnetoresistive sensor for the purpose of averaging the time required for sense currents to be caused to flow through the respective magnetoresistive sensors to shorten the longest reproducing time and to suppress the degradation of the characteristics due to the electromigration, thereby improving the reliability of the magnetic recording drive, the magnetic recording drive includes circuits for averaging the useful life depending on the currents caused to flow through the respective magnetoresistive sensors among the plurality of magnetic heads, whereby the time required for the sense current to be caused to flow through one MR reproducing head is greatly shortened. Therefore, the levels of outputs of the MR reproducing heads can be increased without reduction of the reliability and thus the reliability of the magnetic recording drive can be improved.
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Aoi Hajime
Koizumi Makoto
Matsuda Yoshibumi
Nishiyama Nobumasa
Ogawa Takuji
Hindi Nabil
Hitachi , Ltd.
Neal Regina Y.
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