Title:
磁気記録装置
Document Type and Number:
Japanese Patent JP4267586
Kind Code:
B2
Abstract:
A magnetic recording device comprising a magnetic recording medium, a read-write channel for modulating write data, writing it on the magnetic recording medium, reading data from the magnetic recording medium, and demodulating the read data, and a processor for supplying the write data to the read-write channel and being supplied with the read data from the read-write channel. The processor supplies to the read-write channel a microdefect detection pattern having a first pattern for generating a consecutive magnetization inversion during writing and a second pattern for generating, during reading, a signal having a S/N ratio higher than the signal produced by the first pattern, the read-write channel modulates the microdefect detection pattern, writes it to the magnetic recording medium, reads the microdefect detection pattern, which was written, from the magnetic recording medium, and conducts abnormality detection of the microdefect detection pattern, which was read out.
Inventors:
Yuichiro Yamazaki
Application Number:
JP2005080603A
Publication Date:
May 27, 2009
Filing Date:
March 18, 2005
Export Citation:
Assignee:
富士通株式会社
International Classes:
G11B5/09; G11B20/10; G11B20/12; G11B20/18
Domestic Patent References:
| JP10134524A | ||||
| JP8161705A | ||||
| JP63317908A |
Attorney, Agent or Firm:
Hayashi Tsunetoku
Kenji Doi
Kenji Doi