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1. 发明申请

US20080204930A1 Perpendicular recording head with a grooved yoke 失效
标题翻译：垂直记录头带有槽形轭
公开(公告)号：US20080204930A1
公开(公告)日：2008-08-28
申请号：US11710079
申请日：2007-02-23
申请人： Peng Luo , Shuyu Sun , Chaoyuan Chen
发明人： Peng Luo , Shuyu Sun , Chaoyuan Chen
IPC分类号： G11B5/187
CPC分类号： G11B5/1278 , G11B5/3113 , G11B5/3116
摘要： Disclosed is a perpendicular recording head for a hard disk drive. The perpendicular recording head includes a yoke that has a plurality of grooves essentially perpendicular to a magnetic flux that flows in a vertical direction relative to the yoke. The perpendicular grooves inhibit residual magnetism in the vertical direction and enhance yoke domain stability
摘要翻译：公开了用于硬盘驱动器的垂直记录头。垂直记录头包括具有基本上垂直于相对于磁轭在垂直方向上流动的磁通的多个凹槽的磁轭。垂直槽在垂直方向上抑制剩余磁性，并增强轭结构域的稳定性

2. 发明授权

US08023227B2 Perpendicular recording head with a grooved yoke 失效
标题翻译：垂直记录头带有槽形轭
公开(公告)号：US08023227B2
公开(公告)日：2011-09-20
申请号：US11710079
申请日：2007-02-23
申请人： Peng Luo , Shuyu Sun , Chaoyuan Chen
发明人： Peng Luo , Shuyu Sun , Chaoyuan Chen
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/3113 , G11B5/3116
摘要： Disclosed is a perpendicular recording head for a hard disk drive. The perpendicular recording head includes a yoke that has a plurality of grooves essentially perpendicular to a magnetic flux that flows in a vertical direction relative to the yoke. The perpendicular grooves inhibit residual magnetism in the vertical direction and enhance yoke domain stability.
摘要翻译：公开了用于硬盘驱动器的垂直记录头。垂直记录头包括具有基本上垂直于相对于磁轭在垂直方向上流动的磁通的多个凹槽的磁轭。垂直槽在垂直方向上抑制剩余磁性，并增强轭结构域的稳定性。

3. 发明授权

US07869161B2 Dual write gap perpendicular recording head with a non-magnetic backside shield 失效
标题翻译：双写间隙垂直记录头带非磁性背面屏蔽
公开(公告)号：US07869161B2
公开(公告)日：2011-01-11
申请号：US11810339
申请日：2007-06-04
申请人： Peng Luo , Keung Youn Cho , Shuyu Sun
发明人： Peng Luo , Keung Youn Cho , Shuyu Sun
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3163
摘要： A perpendicular recording head for a hard disk drive. The head includes a non-magnetic backside shield that minimizes or eliminates the flow of backside flux through the head. The head can be fabricated by forming a non-magnetic backside shield layer on a main pole. Portions of the backside shield and main pole can be removed to form a tapered pole portion. A non-magnetic write-gap layer and write shield are then formed onto the backside shield and main pole.
摘要翻译：用于硬盘驱动器的垂直记录头。头部包括非磁性后挡板，其最小化或消除通过头部的背侧通量的流动。可以通过在主极上形成非磁性背面屏蔽层来制造头部。可以去除背面屏蔽和主极的部分以形成锥形极部。然后在背面屏蔽和主极上形成非磁性写间隙层和写入屏蔽。

4. 发明申请

US20080297946A1 Dual write gap perpendicular recording head 失效
标题翻译：双写间隙垂直记录头
公开(公告)号：US20080297946A1
公开(公告)日：2008-12-04
申请号：US11810339
申请日：2007-06-04
申请人： Peng Luo , Keung Youn Cho , Shuyu Sun
发明人： Peng Luo , Keung Youn Cho , Shuyu Sun
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3163
摘要： A perpendicular recording head for a hard disk drive. The head includes a non-magnetic backside shield that minimizes or eliminates the flow of backside flux through the head. The head can be fabricated by forming a non-magnetic backside shield layer on a main pole. Portions of the backside shield and main pole can be removed to form a tapered pole portion. A non-magnetic write-gap layer and write shield are then formed onto the backside shield and main pole.
摘要翻译：用于硬盘驱动器的垂直记录头。头部包括非磁性后挡板，其最小化或消除通过头部的背侧通量的流动。可以通过在主极上形成非磁性背面屏蔽层来制造头部。可以去除背面屏蔽和主极的部分以形成锥形极部。然后在背面屏蔽和主极上形成非磁性写间隙层和写入屏蔽。

5. 发明授权

US07535667B2 Erase band compensated offset servo trimming 失效
标题翻译：擦除波段补偿偏移伺服微调
公开(公告)号：US07535667B2
公开(公告)日：2009-05-19
申请号：US11810188
申请日：2007-06-04
申请人： Peng Luo , Keung Youn Cho , Hao Ping Wen , Shuyu Sun
发明人： Peng Luo , Keung Youn Cho , Hao Ping Wen , Shuyu Sun
IPC分类号： G11B21/02
CPC分类号： G11B5/59655
摘要： A hard disk drive with a disk that has a servo field with an A servo burst and a B servo burst. The A servo burst has a trimmed erase band. The trimmed erase band can be created by offsetting the write head relative to a burst centerline to reduce the width of the erase band. For example, the write head can be moved toward a centerline of the A servo burst. The offset can be a function of write current and cylinder location of the disk. The offsets are selected so that the resultant burst profiles do not contain a flat minimum portion.
摘要翻译：具有磁盘的硬盘驱动器具有A伺服突发和B伺服突发的伺服字段。 A伺服脉冲串具有修整的擦除带。可以通过相对于突发中心线偏移写入头来减少擦除频带的宽度来创建修整的擦除带。例如，写入头可以朝向A伺服突发的中心线移动。偏移量可以是磁盘写入电流和气缸位置的函数。选择偏移量使得合成的脉冲串分布不包含平坦的最小部分。

6. 发明申请

US20080297938A1 Erase band compensated offset servo trimming 失效
标题翻译：擦除波段补偿偏移伺服微调
公开(公告)号：US20080297938A1
公开(公告)日：2008-12-04
申请号：US11810188
申请日：2007-06-04
申请人： Peng Luo , Keung Youn Cho , Hao Ping Wen , Shuyu Sun
发明人： Peng Luo , Keung Youn Cho , Hao Ping Wen , Shuyu Sun
IPC分类号： G11B21/02
CPC分类号： G11B5/59655
摘要： A hard disk drive with a disk that has a servo field with an A servo burst and a B servo burst. The A servo burst has a trimmed erase band. The trimmed erase band can be created by offsetting the write head relative to a burst centerline to reduce the width of the erase band. For example, the write head can be moved toward a centerline of the A servo burst. The offset can be a function of write current and cylinder location of the disk. The offsets are selected so that the resultant burst profiles do not contain a flat minimum portion.
摘要翻译：具有磁盘的硬盘驱动器具有A伺服突发和B伺服突发的伺服字段。 A伺服脉冲串具有修整的擦除带。可以通过相对于突发中心线偏移写入头来减少擦除频带的宽度来创建修整的擦除带。例如，写入头可以朝向A伺服突发的中心线移动。偏移量可以是磁盘写入电流和气缸位置的函数。选择偏移量使得合成的脉冲串分布不包含平坦的最小部分。

7. 发明授权

US07301719B1 Clearance sweep test 失效
标题翻译：清扫扫查
公开(公告)号：US07301719B1
公开(公告)日：2007-11-27
申请号：US11525292
申请日：2006-09-21
申请人： Chao Yuan Chen , Shuyu Sun , Hoa Pham , Sang Lee
发明人： Chao Yuan Chen , Shuyu Sun , Hoa Pham , Sang Lee
IPC分类号： G11B15/18
CPC分类号： G11B5/3169 , G11B5/40 , G11B5/455 , G11B5/6005
摘要： A calibration method for a fly on demand head of a hard disk drive. The method includes the steps of flying a head over a test track of a disk that is covered with a lubricant. A voltage is applied to a heating element of the head to move the head closer to the disk. The fly height of the head is then determined. The voltage can be incrementally varied until the head makes contact with the disk. This sequence can cause a modulated wear pattern in the lubricant of the disk. The voltage is terminated and the head is allowed to fly over the test track. The head is also moved to adjacent tracks on either side of the test track. A pressure gradient of the flying head moves the lubricant about the disk to mitigate the modulated wear pattern.
摘要翻译：用于硬盘驱动器的点播头的校准方法。该方法包括以下步骤：将头部悬挂在被润滑剂覆盖的盘的测试轨道上。将电压施加到头部的加热元件，以使头靠近盘。然后确定头部的飞行高度。电压可以逐渐变化，直到磁头与磁盘接触。该顺序可能导致盘的润滑剂中的调制磨损图案。电压终止，头部允许飞过测试轨道。头部也移动到测试轨道两侧的相邻轨道。飞行头的压力梯度将润滑剂移动到盘周围，以减轻调制的磨损模式。

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