Disk surface defect detection
US9881642B2 · kind B2 · utility
6Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2015 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Apr 22, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present application provides a transducer head comprising a laser source configured to heat a target storage medium surface, and a thermal sensor configured to detect a defect on the target storage medium surface. The present application also provides a method comprising heating a target storage medium surface with an energy source configured in a transducer head to irradiate the target storage medium surface, and detecting a defect on the target storage medium surface using a thermal sensor configured in the transducer head. Other implementations are also described and recited herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.