Invention Grant
- Patent Title: Disk drive and method of writing servo write tracks to a disk
- Patent Title (中): 将磁盘驱动器和将伺服写入磁道写入磁盘的方法
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Application No.: US12963580Application Date: 2010-12-08
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Publication No.: US08873183B2Publication Date: 2014-10-28
- Inventor: Kei Yasuna , Tomoo Ozaki , Makoto Takase , Takao Horiguchi
- Applicant: Kei Yasuna , Tomoo Ozaki , Makoto Takase , Takao Horiguchi
- Applicant Address: NL Amsterdam
- Assignee: HGST Netherlands B.V.
- Current Assignee: HGST Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Priority: JP2009-282322 20091212
- Main IPC: G11B5/596
- IPC: G11B5/596

Abstract:
A system and method of writing servo write tracks to a rotating disk using a head having a read/write offset is disclosed. One embodiment utilizes a write element on the head to write the servo write tracks. A read element on the head is then positioned over the servo write tracks. The phase of a specific frequency component of the track shape error in the servo write track is measured during the positioning of the read element over the servo write track. A sine wave having a specific frequency and a phase is selected based on the measurement results. The sine wave is then applied to a servo system as a correction signal. A new servo write track is then written with the write element.
Public/Granted literature
- US20110141599A1 Disk Drive And Method Of Writing Servo Write Tracks To A Disk Public/Granted day:2011-06-16
Information query
IPC分类: