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Patent Agency Ranking
公开(公告)号：BR9405114A
公开(公告)日：1995-08-08
申请号：BR9405114
申请日：1994-12-15
Applicant: IBM
Inventor： CHRISTNER JODIE ANN , CUNNINGHAM EARL A , KERWIN GREGORY JOHN , POSS JOE MARTIN
Abstract: In a magnetic data storage device having data recorded in tracks on a media surface and including at least one magnetoresistive (MR) transducer read heads, the adaptive control method for the read head bias current involves determining an optimised bias current value for each MR head. The optimised values are stored, and the active MR head is supplied with a bias current in accordance with the stored value. The optimised bias current value is periodically re-determined for each MR head, and the stored bias current values are revised to correspond with the new optimised bias current values. The bias current values are stored on a disk media surface and are transferred from disk storage to random access memory during the power up sequence of the device.
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公开(公告)号：DE69428864T2
公开(公告)日：2002-05-02
申请号：DE69428864
申请日：1994-11-15
Applicant: IBM
Inventor： CHRISTNER JODIE ANN , CUNNINGHAM EARL A , KERWIN GREGORY JOHN , POSS JOE MARTIN
Abstract: In a magnetic data storage device having data recorded in tracks on a media surface and including at least one magnetoresistive (MR) transducer read heads, the adaptive control method for the read head bias current involves determining an optimised bias current value for each MR head. The optimised values are stored, and the active MR head is supplied with a bias current in accordance with the stored value. The optimised bias current value is periodically re-determined for each MR head, and the stored bias current values are revised to correspond with the new optimised bias current values. The bias current values are stored on a disk media surface and are transferred from disk storage to random access memory during the power up sequence of the device.
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公开(公告)号：DE69428864D1
公开(公告)日：2001-12-06
申请号：DE69428864
申请日：1994-11-15
Applicant: IBM
Inventor： CHRISTNER JODIE ANN , CUNNINGHAM EARL A , KERWIN GREGORY JOHN , POSS JOE MARTIN
Abstract: In a magnetic data storage device having data recorded in tracks on a media surface and including at least one magnetoresistive (MR) transducer read heads, the adaptive control method for the read head bias current involves determining an optimised bias current value for each MR head. The optimised values are stored, and the active MR head is supplied with a bias current in accordance with the stored value. The optimised bias current value is periodically re-determined for each MR head, and the stored bias current values are revised to correspond with the new optimised bias current values. The bias current values are stored on a disk media surface and are transferred from disk storage to random access memory during the power up sequence of the device.
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公开(公告)号：IN189869B
公开(公告)日：2003-05-03
申请号：IN1344DE1994
申请日：1994-10-25
Applicant: IBM
Inventor： CHRISTNER JODIE ANN , CUNNINGHAM EARL ALBERT , KERWIN GREGORY JOHN , POSS JOE MARTIN
IPC: G11B5/09
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公开(公告)号：SG42837A1
公开(公告)日：1997-10-17
申请号：SG1996000011
申请日：1994-11-15
Applicant: IBM
Inventor： CHRISTNER JODIE ANN , CUNNINGHAM EARL A , KERWIN GREGORY JOHN , POSS JOE MARTIN
Abstract: In a magnetic data storage device having data recorded in tracks on a media surface and including at least one magnetoresistive (MR) transducer read heads, the adaptive control method for the read head bias current involves determining an optimised bias current value for each MR head. The optimised values are stored, and the active MR head is supplied with a bias current in accordance with the stored value. The optimised bias current value is periodically re-determined for each MR head, and the stored bias current values are revised to correspond with the new optimised bias current values. The bias current values are stored on a disk media surface and are transferred from disk storage to random access memory during the power up sequence of the device.
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