Invention Grant
- Patent Title: Direct current magnetoresistive jog offset compensation
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Application No.: US15341246Application Date: 2016-11-02
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Publication No.: US09837111B1Publication Date: 2017-12-05
- Inventor: Mingzhong Ding , Xiong Liu , Xiang Lu , Qiang Bi , Kian Keong Ooi
- Applicant: SEAGATE TECHNOLOGY LLC
- Applicant Address: US CA Cupertino
- Assignee: SEAGATE TECHNOLOGY LLC
- Current Assignee: SEAGATE TECHNOLOGY LLC
- Current Assignee Address: US CA Cupertino
- Agency: Holland & Hart LLP
- Main IPC: G11B5/596
- IPC: G11B5/596

Abstract:
Systems and methods for compensating for magnetoresistive (MR) jog offset direct current (DC) drift in a disc drive are described. In one embodiment, a method may include determining an occurrence of NOS, for example, by monitoring disc slip, to determine when the method should proceed. An MR jog offset DC drift amount is determined for each head of the disc drive. One of several approaches may be employed for determining the MR jog offset DC drift amount. By determining an MR jog offset DC drift amount for each head, a compensation profile is determined for the drive. The determined compensation profile may then be used during operation of the disc drive to compensate for the DC drift. One of several approaches may be employed for compensating based on the compensation profile.
Public/Granted literature
- US20170352371A1 DIRECT CURRENT MAGNETORESISTIVE JOG OFFSET COMPENSATION Public/Granted day:2017-12-07
Information query
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