首页 > 专利信息

磁盘驱动器以及磁盘驱动中的控制方法

申请公布号:CN1988000A

申请号:CN200610144633.5

申请日期:2006.11.09

申请公布日期:2007.06.27

申请人:
日立环球储存科技荷兰有限公司

发明人:冈田知久

分类号:G11B5/012(2006.01);G11B5/02(2006.01)

主分类号:G11B5/012(2006.01)

代理机构:
中原信达知识产权代理有限责任公司

代理人:李涛;钟强

地址:荷兰阿姆斯特丹

摘要:本发明提供磁盘驱动器以及在该磁盘驱动器中的控制方法,该磁盘驱动器通过根据记录方法和记录频率放大写入电流就能够获得良好的记录性能。一种HDD,包括写入电流供应部分和写磁头(112a)。写入电流供应部分基于写入电流产生用于记录到磁盘的写入信号以及产生写入电流I<SUB>W</SUB>。写磁头(112a)通过写入电流I<SUB>W</SUB>将数据记录到磁盘。写入电流供应部分包括:写入信道(121),产生写入信号V1;写入驱动器A(202),用于产生来自于写入信号V1的写入电流I<SUB>A</SUB>;高频模式提取电路(201),从写入信号中提取高频模式部分;以及写入驱动器B(203),产生来自于所提取的高频模式部分的写入电流I<SUB>B</SUB>。将写入电流I<SUB>A</SUB>和IB加在一起,作为只有当频率处于高频时才放大其幅度的写入电流I<SUB>W</SUB>提供给写磁头(112a)。

主权项:1.一种磁盘驱动器,包括:写入电流供应部分,用于产生将记录到磁盘的写入信号并根据该写入信号产生写入电流;以及写磁头,用于基于该写入电流将数据记录到该磁盘,其中该写入电流供应部分产生依赖于数据长度的该写入信号的频率范围中的该写入电流,并且只有在该写入信号的特定频率范围中的部分写入电流才被放大并被提供给该写磁头。

专利推荐

Virus causing respiratory tract illness in susceptible mammals

Colorimetric substrates, colorimetric sensors, and methods of use

Negative-working lithographic printing plate precursors

Electrophotographic photoreceptor, method for preparing the electrophotographic photoreceptor, and image forming method and apparatus and process cartridge using the electrophotographic photoreceptor

Porous electrode substrate, method for producing the same, membrane electrode assembly, and polymer electrolyte fuel cell

Flow field plate for reduced pressure drop in coolant

Condensed polycyclic aromatic compound, production process of same, and positive electrode active material for lithium ion secondary battery containing same

Non-aqueous electrolyte secondary battery and producing method of electrode

Lithium titanium oxide, method of preparing lithium titanium oxide, and lithium rechargeable battery including lithium titanium oxide

Cathode active material for lithium secondary batteries with core of lithium metal oxide and shell of lithium iron phosphate oxide, method of preparing the same, and lithium secondary batteries comprising the same

Battery cover insulator system for fluid communication with battery vents

Separator having porous coating layer and electrochemical device having the same

Substrate for suspension, process for producing the same, suspension for magnetic head, and hard disk drive

Light emitting element and electronic device using the same

Hard coating film

Grooved type vacuum thermal insulation material and a production method for the same

Flexible seam joint for use in robotic skin

Infrared ray cut-off material, dispersion of infrared ray cut-off material, infrared ray cut-off film-forming composition, and infrared ray cut-off film

Deposition of metal films using alane-based precursors

Methods for depositing antireflective coating compositions