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公开(公告)号：US06657804B1
公开(公告)日：2003-12-02
申请号：US09451912
申请日：1999-12-01
申请人： Futoshi Tomiyama , Takehiko Hamaguchi , Toru Matsushita , Hideki Zaitsu , Reijiro Tsuchiya , Hisashi Takano
发明人： Futoshi Tomiyama , Takehiko Hamaguchi , Toru Matsushita , Hideki Zaitsu , Reijiro Tsuchiya , Hisashi Takano
IPC分类号： G11B1504
CPC分类号： G11B5/5526 , G11B5/59633
摘要： A magnetic recording disk drive can prevent the deterioration of the head off-track characteristics and the reduction of the drive performance even when an erase band asymmetry resulting from a skew angle exists. A write inhibit slice value for an inner peripheral side offset is made smaller than a write inhibit slice value for an outer peripheral side offset at a position where an erase band on the inner peripheral side is greater than an erase band on the outer peripheral side, so that the adjacent track on the outer peripheral side cannot easily erase a data track. On the contrary, the inner periphery and the outer periphery are paraphrased at a position where the erase band on the outer peripheral side is greater than the erase band on the inner peripheral side.
摘要翻译： 磁记录盘驱动器即使当存在由倾斜角度导致的擦除带不对称性时，也可以防止磁头偏离磁道特性的恶化和驱动性能的降低。 使内周侧偏移的写禁止限幅值小于在内周侧的擦除频带大于外周侧的擦除频带的位置处的外周侧偏移的写禁止限幅值， 使得外周侧的相邻轨道不能容易地擦除数据轨道。 相反，内周侧和外周侧在外周侧的擦除带大于内周侧的擦除带的位置被释义。
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公开(公告)号：US06879460B2
公开(公告)日：2005-04-12
申请号：US10681211
申请日：2003-10-09
申请人： Futoshi Tomiyama , Takehiko Hamaguchi , Toru Matsushita , Hideki Zaitsu , Reijiro Tsuchiya , Hisashi Takano
发明人： Futoshi Tomiyama , Takehiko Hamaguchi , Toru Matsushita , Hideki Zaitsu , Reijiro Tsuchiya , Hisashi Takano
CPC分类号： G11B5/5526 , G11B5/59633
摘要： A magnetic recording disk drive can prevent the deterioration of the head off-track characteristics and the reduction of the drive performance even when an erase band asymmetry resulting from a skew angle exists. A write inhibit slice value for an inner peripheral side offset is made smaller than a write inhibit slice value for an outer peripheral side offset at a position where an erase band on the inner peripheral side is greater than an erase band on the outer peripheral side, so that the adjacent track on the outer peripheral side cannot easily erase a data track. On the contrary, the inner periphery and the outer periphery are paraphrased at a position where the erase band on the outer peripheral side is greater than the erase band on the inner peripheral side.
摘要翻译： 磁记录盘驱动器即使当存在由倾斜角度导致的擦除带不对称性时，也可以防止磁头偏离磁道特性的恶化和驱动性能的降低。 使内周侧偏移的写禁止限幅值小于在内周侧的擦除频带大于外周侧的擦除频带的位置处的外周侧偏移的写禁止限幅值， 使得外周侧的相邻轨道不能容易地擦除数据轨道。 相反，内周侧和外周侧在外周侧的擦除带大于内周侧的擦除带的位置被释义。
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3.发明授权公开(公告)号：US06473254B1
公开(公告)日：2002-10-29
申请号：US09506270
申请日：2000-02-17
IPC分类号： G11B509
CPC分类号： B82Y10/00 , B82Y25/00 , G11B5/012 , G11B5/3909 , G11B5/5552 , G11B5/59611 , G11B2005/001 , G11B2005/0016
摘要： A plurality of patterns are formed so that each is deviated slightly from another in each sector in the track width direction. Then, the pattern is followed up, thereby obtaining both a full-track profile and a micro-track profile. A variation of a position signal is detected from this profile, thereby creating a table for correcting the non-linearity error of the position signal. Consequently, the distribution of the write/read-back property is measured, thereby enabling the track density to be improved. Furthermore, a variation of the position signal caused by a property variation of the head read-back element is detected and corrected, thereby enabling a high reliability and a high track density to be realized for the object magnetic recording disk apparatus.
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4.发明授权公开(公告)号：US06404576B1
公开(公告)日：2002-06-11
申请号：US09481399
申请日：2000-01-12
IPC分类号： G11B509
CPC分类号： B82Y10/00 , B82Y25/00 , G11B5/012 , G11B5/3909 , G11B5/5552 , G11B5/59611 , G11B2005/001 , G11B2005/0016
摘要： A plurality of patterns are formed so that each is deviated slightly from another in each sector in the track width direction. Then, the pattern is followed up, thereby obtaining both a full-track profile and a micro-track profile. A variation of a position signal is detected from this profile, thereby creating a table for correcting the non-linearity error of the position signal. Consequently, the distribution of the write/read-back property is measured, thereby enabling the track density to be improved. Furthermore, a variation of the position signal caused by a property variation of the head read-back element is detected and corrected, thereby enabling a high reliability and a high track density to be realized for the object magnetic recording disk apparatus.
摘要翻译： 形成多个图案，使得每个图案在轨道宽度方向上的每个扇区中与另一个略微偏离。 然后，跟踪图案，从而获得全轨道轮廓和微轨道轮廓。 从该轮廓检测位置信号的变化，由此创建用于校正位置信号的非线性误差的表格。 因此，测量写入/读回属性的分布，从而能够提高轨道密度。 此外，检测和校正由头读回元件的特性变化引起的位置信号的变化，从而能够实现对象磁记录盘装置的高可靠性和高轨道密度。
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公开(公告)号：US06717760B2
公开(公告)日：2004-04-06
申请号：US10102651
申请日：2002-03-22
IPC分类号： G11B2736
CPC分类号： B82Y10/00 , B82Y25/00 , G11B5/012 , G11B5/3909 , G11B5/5552 , G11B5/59611 , G11B2005/001 , G11B2005/0016
摘要： A plurality of patterns are formed beforehand so that each of those patterns is deviated slightly from another in each sector in the track width direction, then the pattern is followed up, thereby obtaining both full-track profile and micro-track profile. A variation of a position signal is detected from this profile, thereby creating a table for correcting the non-linearity error of the position signal. Consequently, the distribution of the write/read-back property is measured, thereby enabling the track density to be improved. Furthermore, a variation of the position signal caused by a property variation of the head read-back element is detected and corrected, thereby enabling a high reliability and a high track density to be realized for the object magnetic recording disk apparatus.
摘要翻译： 预先形成多个图案，使得这些图案中的每一个在轨道宽度方向上在每个扇区中与另一个图案稍微偏离，然后跟踪图案，从而获得全轨道轮廓和微轨道轮廓。 从该轮廓检测位置信号的变化，从而创建用于校正位置信号的非线性误差的表格。因此，测量写入/读回属性的分布，从而使轨道密度为 改进。 此外，检测和校正由头读回元件的特性变化引起的位置信号的变化，从而能够实现对象磁记录盘装置的高可靠性和高轨道密度。
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公开(公告)号：US06906889B2
公开(公告)日：2005-06-14
申请号：US10217452
申请日：2002-08-14
CPC分类号： G11B33/121 , G11B5/5521 , G11B25/043
摘要： A magnetic disk drive has a low power consumption state in which the spindle motor is stopped for reducing the average power consumption when no read or write commands have been received. When a read or write command is received, the spindle motor is started. The time it takes to complete a read command is shorter than that for a write command as measured from the receipt of the read command or write command with the spindle motor stopped in the low power consumption state.
摘要翻译： 磁盘驱动器具有低功耗状态，其中主轴电机停止以在没有接收到读或写命令时降低平均功耗。 当接收到读或写命令时，主轴电机起动。 完成读取命令所需的时间短于从主命令电机停止在低功耗状态时从读取命令或写入命令的接收测量的写命令的时间。
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公开(公告)号：US06515817B1
公开(公告)日：2003-02-04
申请号：US09376354
申请日：1999-08-18
IPC分类号： G11B1546
CPC分类号： G11B33/121 , G11B5/5521 , G11B25/043
摘要： A magnetic disk drive has a low power consumption state in which the spindle motor is stopped for reducing the average power consumption when no read or write commands have been received. When a read or write command is received, the spindle motor is started. The time it takes to complete a read command is shorter than that for a write command as measured from the receipt of the read command or write command with the spindle motor stopped in the low power consumption state.
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公开(公告)号：US06909566B1
公开(公告)日：2005-06-21
申请号：US10130953
申请日：2000-02-10
CPC分类号： G11B5/596 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/09 , G11B20/1403 , G11B21/106 , G11B2005/001
摘要： The invention relates to a magnetic recording/reproducing device in which a reproduce head is positioned where the crosstalk between adjacent tracks in a magnetic disk is minimized to maintain an adequate transfer rate in a system involving great crosstalk. The removal of crosstalk ensures the reproduction of the recorded data and thus increases the reliability of the magnetic recording/reproducing device. The magnetic recording/reproducing device according to this invention includes a magnetic disk on which a plurality of tracks are concentrically formed, and data are recorded at different frequencies on adjacent tracks.
摘要翻译： 本发明涉及一种磁记录/再现装置，其中再现头被定位在磁盘中相邻轨道之间的串扰被最小化以在涉及大串扰的系统中保持适当的传送速率。 串扰的去除确保了记录数据的再现，从而提高了磁记录/再现装置的可靠性。 根据本发明的磁记录/再现装置包括其上同心地形成多个轨道的磁盘，并且在相邻轨道上以不同的频率记录数据。
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公开(公告)号：US06760172B1
公开(公告)日：2004-07-06
申请号：US09616073
申请日：2000-07-13
IPC分类号： G11B509
CPC分类号： G11B5/59633
摘要： To improve the track density by reducing the discontinuity of servo patterns to be generated by a servo track writer, some servo areas existing in one circuit of a magnetic disk are formed at the consecutive first and second circuits of a servo track writer by averaging a plurality of position signals detected from servo patterns at the first and second circuits of the magnetic disk.
摘要翻译： 为了通过减少由伺服轨迹写入器产生的伺服模式的不连续性来提高轨道密度，存在于磁盘的一个电路中的一些伺服区域通过对伺服轨迹写入器的连续的第一和第二电路进行平均而形成， 在磁盘的第一和第二电路处从伺服模式检测的位置信号。
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10.发明授权Magnetic disk device having a write head to write by shifting in a radial direction 有权磁盘装置具有通过沿径向移位来写入的写入头公开(公告)号：US07057838B2
公开(公告)日：2006-06-06
申请号：US10407209
申请日：2003-04-07
申请人： Takehiko Hamaguchi , Atsushi Nakamura , Yasutaka Nishida , Hisashi Takano , Yohji Maruyama , Hiroshi Ide , Hideki Sawaguchi , Futoshi Tomiyama
发明人： Takehiko Hamaguchi , Atsushi Nakamura , Yasutaka Nishida , Hisashi Takano , Yohji Maruyama , Hiroshi Ide , Hideki Sawaguchi , Futoshi Tomiyama
IPC分类号： G11B5/02
CPC分类号： G11B5/012 , G11B5/4886 , G11B27/02
摘要： In the present invention, by making the width of the write element larger than the track pitch and securing a write magnetic field strong enough to reverse the magnetization of the magnetic layer, and further by writing while shifting a write head comprising the write element, a magnetic disk drive, of which the track width is narrower than the write element width, and the storage capacity is large, is realized.
摘要翻译： 在本发明中，通过使写入元件的宽度大于轨道间距，并且确保写入磁场足够强以反转磁性层的磁化，并且进一步通过在包括写入元件的写入头的移位的同时进行写入， 磁盘驱动器，其轨道宽度比写入元件宽度窄，并且存储容量大。
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