Invention Grant
- Patent Title: Asperity and head-media contact detection using multi-stage temperature coefficient of resistance sensor
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Application No.: US14827584Application Date: 2015-08-17
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Publication No.: US09373361B2Publication Date: 2016-06-21
- Inventor: Gary Joseph Kunkel , John L. Brand
- 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: Hollingsworth Davis, LLC
- Main IPC: G11B27/36
- IPC: G11B27/36 ; G11B5/31 ; G11B5/60 ; G11B7/09 ; G11B7/121

Abstract:
A multi-stage sensor is situated on the head transducer and configured to interact with a magnetic recording medium. A first sensor stage of the multi-stage sensor has a temperature coefficient of resistance. A second sensor stage of the multi-stage sensor is coupled to the first sensor and has a temperature coefficient of resistance. The first sensor stage is configured to preferentially sense asperities of the media relative to the second sensor stage, and the second sensor stage configured to preferentially sense proximity to, and contact with, a surface of the media relative to the first sensor stage. The first and second sensor stages may be connected in series or in parallel.
Public/Granted literature
- US20150380021A1 ASPERITY AND HEAD-MEDIA CONTACT DETECTION USING MULTI-STAGE TEMPERATURE COEFFICIENT OF RESISTANCE SENSOR Public/Granted day:2015-12-31
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