| 发明名称 |
CONTACT DETECTION USING LASER MODULATION |
| 摘要 |
An apparatus is arranged to detect contact between an air bearing surface of a transducer and a medium using a modulated thermal sensor signal. A laser source produces modulated laser light. A thermal sensor is disposed at or near the air bearing surface and is subject to cyclic heating by the modulated laser light. The thermal sensor is configured to produce the modulated sensor signal in response to the cyclic heating. |
| 申请公布号 |
US2014269819(A1) |
申请公布日期 |
2014.09.18 |
| 申请号 |
US201313802386 |
申请日期 |
2013.03.13 |
| 申请人 |
SEAGATE TECHNOLOGY LLC |
发明人 |
Kiely James Dillon;Scheppers Karl;Macken Declan;Johnson Michael Thomas |
| 分类号 |
G01B21/16 |
主分类号 |
G01B21/16 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An apparatus, comprising:
a laser source configured to produce laser light and to modulate the laser light; a transducer comprising an air bearing surface and configured to use the laser light as an energy source for heating a region of a magnetic medium; and a thermal sensor at or near the air bearing surface and subject to cyclic heating by the modulated laser light, the thermal sensor configured to produce a modulated sensor signal in response to the cyclic heating. |
| 地址 |
Cupertino CA US |
