Title:
磁気ディスク装置及びその制御方法
Document Type and Number:
Japanese Patent JP5313576
Kind Code:
B2
Abstract:
A hard-disk drive. The hard-disk drive includes a magnetic-recording disk including tracks on which a plurality of patterned bit-cells that are isolated magnetically are aligned at predetermined alignment pitches. The hard-disk drive includes a magnetic-recording head which is configured to follow tracks, and to write and to read data. The hard-disk drive includes a signal-processing unit which is configured to generate a recording signal based on a write-clock signal with cycles corresponding to alignment pitches of patterned bit-cells, and to output a recording signal. The hard-disk drive includes a phase-detecting unit which is configured to detect a phase of the write-clock signal when the magnetic-recording head reaches an end point of a predetermined range. The hard disk drive includes a determination-processing unit which is configured to determine success of data writing based on a difference between an expected value and a detected value of the phase of the write-clock signal.
Inventors:
Shuji Nishida
Yasutaka Nishida
Mochizuki Masafumi
Hideaki Maeda
Yasutaka Nishida
Mochizuki Masafumi
Hideaki Maeda
Application Number:
JP2008186714A
Publication Date:
October 09, 2013
Filing Date:
July 18, 2008
Export Citation:
Assignee:
H.G. Esteneetherland Bee Buoy
International Classes:
G11B5/00; G11B5/02
Domestic Patent References:
| JP2003157507A | ||||
| JP10144009A |
Attorney, Agent or Firm:
Haruka International Patent Office