发明授权
- 专利标题： Magnetic head driving circuit and magnetic disk device
- 专利标题（中）： 磁头驱动电路和磁盘装置
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申请号： US11068777申请日： 2005-03-02
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公开(公告)号： US07221529B2公开(公告)日： 2007-05-22
- 发明人: Mitsuo Otsuki , Hiroshi Kiyono , Nobutaka Nishio , Hiroki Matsukuma
- 申请人： Mitsuo Otsuki , Hiroshi Kiyono , Nobutaka Nishio , Hiroki Matsukuma
- 申请人地址： JP Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权： JP2004-061413 20040304
- 主分类号： G11B5/09
- IPC分类号： G11B5/09 ; G11B5/02 ; G11B21/02
摘要：
The invention is directed to a magnetic head driving circuit and a magnetic disk device which achieve a low flying-height with thermal protrusion and thus a reliable write operation on the magnetic disk. The write circuit 3 receives the write data signal Sw inputted therein, and generates and outputs the write voltages Wx, Wy based upon the inputted signal. The write voltages Wx, Wy are composed of a preamble portion T1, a sink mark T2 and a user data portion T3 in each sector for magnetic recording. In the write voltage, the frequency f2 of the signal in the preamble portion T1 is higher than half the frequency f1 of the signal in the user data portion T3.
公开/授权文献
- US20050195513A1 Magnetic head driving circuit and magnetic disk device 公开/授权日：2005-09-08
信息查询
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