Invention Grant
US08891191B1 Data storage device initializing read signal gain to detect servo seed pattern
有权
数据存储设备初始化读取信号增益以检测伺服种子图案
- Patent Title: Data storage device initializing read signal gain to detect servo seed pattern
- Patent Title (中): 数据存储设备初始化读取信号增益以检测伺服种子图案
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Application No.: US14271338Application Date: 2014-05-06
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Publication No.: US08891191B1Publication Date: 2014-11-18
- Inventor: Charles A. Park
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA Irvine
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA Irvine
- Main IPC: G11B5/09
- IPC: G11B5/09 ; G11B5/596
Abstract:
A data storage device is disclosed comprising a disk comprising at least one servo seed pattern, and a head actuated over the disk. An amplitude measurement is generated based on a read signal emanating from the head while reading the disk. A number of times the amplitude measurement exceeds a first threshold is first counted during a first revolution of the disk, and a number of times the amplitude measurement exceeds the first threshold is second counted during a second revolution of the disk. The servo seed pattern is detected based on the first count and the second count.
Information query
IPC分类:
