| 发明名称 |
IN SITU SENSOR BASED CONTACT DETECTION |
| 摘要 |
A method for detecting a contact event between a transducer and a recording medium is disclosed. The method includes positioning a transducer with respect to a recording medium, where the transducer includes a writer, a reader, a heater, and a thermally responsive sensor. The method further includes applying power to the heater to establish a fly height of the transducer; supplying a bias current through the thermally responsive sensor to generate a bias signal; measuring a root mean square (RMS) voltage VRMS of the thermally responsive sensor based on the bias signal; determining a threshold voltage VT; and detecting a contact event between the transducer and the medium based on VRMS being greater than VT. |
| 申请公布号 |
US2014368946(A1) |
申请公布日期 |
2014.12.18 |
| 申请号 |
US201313919207 |
申请日期 |
2013.06.17 |
| 申请人 |
Seagate Technology LLC |
发明人 |
Chou Andy;Li Quan;Cheng Chee Wee;Ko Beng Theam;Ngwe Myint |
| 分类号 |
G11B5/60;G11B5/03 |
主分类号 |
G11B5/60 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method, comprising:
positioning a transducer with respect to a recording medium, the transducer comprising a writer, a reader, a heater, and a thermally responsive sensor; applying power to the heater to establish a fly height of the transducer; supplying a bias current through the thermally responsive sensor to generate a bias signal; measuring a root mean square (RMS) voltage VRMS of the thermally responsive sensor based on the bias signal; determining a threshold voltage VT; and detecting a contact event between the transducer and the medium based on VRMS being greater than VT. |
| 地址 |
Cupertino CA US |
