Patent · US Active

Data storage device converting disk surface to read-only

US10665263B1 · kind B1 · utility

3Cited by

10References

11Claims

0Family size

Assignee

Western Digital Technologies, Inc. · US

Inventors

Shaomin Xiong · Newark, US
Toshiki Hirano · San Jose, US
Na Wang · San Jose, US
William B. Boyle · Lake Forest, US

Key dates

Filing date	Feb 10, 2019
Grant date	May 26, 2020
Priority date	—
Expiry date	Feb 10, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG11B2005/0024
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A data storage device is disclosed comprising a first head actuated over a first disk surface, wherein the first head comprises a write coil and a write-assist component. First data is written to the first disk surface using the write coil and the write-assist component of the first head. An electrical bias is applied to the write-assist component of the first head to physically damage the write-assist component, thereby rendering the first disk surface read-only.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.