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2. 发明公开

EP0785542A1 Magnetic disk drive 失效
标题翻译： Magnetische Platteneinheit
公开(公告)号：EP0785542A1
公开(公告)日：1997-07-23
申请号：EP97300191.0
申请日：1997-01-14
申请人： HITACHI, LTD.
发明人： Horisaki, Makoto , Seo, Yosuke , Hamada, Yosuke , Yamaguchi, Takashi , Shishida, Kayuhisa , Numasato, Hidehiko
IPC分类号： G11B5/596
CPC分类号： G11B5/59655
摘要： In a magnetic disk drive for reading two or more positional information signals of multi-phases, a positional signal that is always continuous even at switching points (CH) where signals of different phases (N, Q) are switched and excellent in linearity is produced in order to precisely position the head (9) at an arbitrary point on a track. N' signal and Q' signal are calculated at each sampling time from the equations N' signal = N signal/ (| N signal | 2 + | Q signal | 2 ) Q' signal = Q signal/ (| N signal | 2 + | Q signal | 2 ) so that the positional signal is normalized at the intersections between N signal and Q signal, and these positional information signals are connected so that the head can be positioned properly.
摘要翻译：在用于读取多个相位的两个或多个位置信息信号的磁盘驱动器中，产生在不同相位（N，Q）的信号被切换并且线性优异的切换点（CH）下始终连续的位置信号以便将磁头（9）精确地定位在轨道上的任意点上。在每个采样时刻从等式 $计算N'信号和Q'信号，使得位置信号在N信号和Q信号之间的相交处被归一化，并且这些位置信息信号被连接，使得头可以正确定位$

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