Disk drive measuring stroke difference between heads by detecting a difference between ramp contact

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United States of America Patent

PATENT NO 9355666
SERIAL NO

14733027

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A data storage device is disclosed comprising a plurality of disk surfaces including a first disk surface and a second disk surface. A first head is actuated over the first disk surface, and a second head is actuated over the second disk surface. A ramp is located proximate an outer diameter of the disk surfaces. A stroke difference between the first and second heads is measured by moving the first and second heads toward the ramp and detecting when the heads contact the ramp.

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Patent Owner(s)

  • WESTERN DIGITAL TECHNOLOGIES, INC.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Huang, Yanan Torrance, US 55 1319
Ji, Chuanwen Irvine, US 22 995
Phan, Duc T Saratoga, US 37 2349
Zhang, Zhenyu Irvine, US 154 831

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