发明授权
- 专利标题： Method and apparatus for run-time temperature compensation of giant magnetoresistive head bias current
- 专利标题（中）： 巨磁阻头偏置电流的运行时温度补偿方法和装置
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申请号： US09610202申请日： 2000-07-03
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公开(公告)号： US06574061B1公开(公告)日： 2003-06-03
- 发明人: Khong Mau Ling , Lian Chong Kwek , Kwee Teck Say , Myint Ngwe , Kah Liang Gan , Beng Wee Quak
- 申请人： Khong Mau Ling , Lian Chong Kwek , Kwee Teck Say , Myint Ngwe , Kah Liang Gan , Beng Wee Quak
- 主分类号： G11B503
- IPC分类号： G11B503
摘要：
A process of run-time temperature compensating bias current to a magnetoresistive read head in which a plurality of temperature ranges are defined with associated bias current values. A hysteresis range of temperatures is defined for each boundary between temperature ranges. A bias current value is selected based on the temperature range of the sensed temperature. The process is repeated. If the sensed temperature is in a different temperature range from that previously identified and the measured temperature is not in a hysteresis range at the boundary with the temperature range previously identified, the selected bias current value is based on the presently identified temperature range. If the sensed temperature is in a hysteresis range at the boundary with the temperature range previously.