Invention Grant
US08879194B2 Calibration of ramp location in a disk drive employing spiral-based self servo writing
有权
在使用螺旋式自伺服写入的磁盘驱动器中校准斜坡位置
- Patent Title: Calibration of ramp location in a disk drive employing spiral-based self servo writing
- Patent Title (中): 在使用螺旋式自伺服写入的磁盘驱动器中校准斜坡位置
-
Application No.: US13766716Application Date: 2013-02-13
-
Publication No.: US08879194B2Publication Date: 2014-11-04
- Inventor: Gabor Szita
- Applicant: Kabushiki Kaisha Toshiba
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Patterson & Sheridan, LLP
- Main IPC: G11B21/02
- IPC: G11B21/02
Abstract:
The location of a load/unload ramp in a disk drive is calibrated by monitoring servo spirals that are crossed by a magnetic read/write head during an unload process. Monitoring the number servo spirals crossed allows an accurate velocity of the read/write head to be determined. Based on this unload velocity and the time elapsed during the unload operation, a distance between an ID crash stop position and the load/unload ramp can be calculated quickly and accurately.
Public/Granted literature
- US20140226227A1 CALIBRATION OF RAMP LOCATION IN A DISK DRIVE EMPLOYING SPIRAL-BASED SELF SERVO WRITING Public/Granted day:2014-08-14
Information query
