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Magnetic disk device and recording method of magnetic disk device

A technology of a magnetic disk device and a magnetic disk, which is applied in the directions of magnetic recording, alignment of tracks on a magnetic disk, data recording, etc., and can solve problems such as data reliability problems.

Active Publication Date: 2021-08-17
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the technique of changing the recording density described above, it is also considered that if the recording density is made too narrow, there may be a problem with the reliability of the data.

Method used

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  • Magnetic disk device and recording method of magnetic disk device
  • Magnetic disk device and recording method of magnetic disk device
  • Magnetic disk device and recording method of magnetic disk device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0024] figure 1 It is a block diagram of the magnetic disk device according to the first embodiment.

[0025] Such as figure 1 As shown, the magnetic disk device 1 is configured as, for example, a hard disk drive (HDD), and includes a magnetic disk (hereinafter referred to as disk) 2, a spindle motor (SPM) 3, an actuator 4, a voice coil motor (VCM) 5, and a magnetic head (hereinafter referred to as head) 10 , head amplifier IC 11 , R / W channel 12 , hard disk controller (HDC) 13 , microprocessor (MPU) 14 , driver IC 15 and memory 16 . In addition, the magnetic disk device 1 can be connected to a host computer (host) 17 . The head 10 includes a writing head (recording head: writer) 10W, a reading head (reproducing head: reader) 10R, and a spin-torque oscillator (Spin-Torque-Oscillator: STO) 100 as a high-frequency oscillation element. In addition, the R / W channel 12, HDC 13 and MPU 14 can also be assembled in a single-chip integrated circuit.

[0026] The disc 2 has, for exa...

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PUM

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Abstract

Embodiments provide a magnetic disk device capable of improving the quality of magnetic recording and a recording method of the magnetic disk device. According to an embodiment, a magnetic disk device includes a magnetic head, a magnetic disk, and a control unit. The magnetic disk is recorded with a servo pattern for positioning the magnetic head when recording data by the magnetic head. The control unit sets recording conditions for each predetermined unit of the magnetic disk based on the servo pattern, and records data on the magnetic disk according to the set recording conditions.

Description

[0001] This application enjoys the priority of the basic application based on Japanese Patent Application No. 2019-28328 (filing date: February 20, 2019). This application includes the entire content of the basic application by referring to this basic application. technical field [0002] Embodiments relate to a magnetic disk device and a recording method of the magnetic disk device. Background technique [0003] A magnetic disk device has a recording medium on which data is recorded magnetically. The recording medium is, for example, in the shape of a disk, and is configured such that data is recorded on the surface layer of the disk and in the circumferential direction by a magnetic head. Due to the manufacturing principle of this type of recording medium, variations (fluctuations) in magnetic properties occur in the recording area within the same cycle. In general, in a magnetic disk device, data is recorded under the same recording conditions in the same week, and ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B5/596
CPCG11B5/59688G11B20/10305G11B2220/2516G11B5/59638G11B20/1217G11B2005/001G11B2005/0021G11B2005/0024G11B2020/1238
Inventor 友田悠介原武生前东信宏
Owner KK TOSHIBA