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1. 发明授权

US06700723B2 Ultrahigh density longitudinal recording on magnetic media 失效
标题翻译：磁性介质上的超高密度纵向记录
公开(公告)号：US06700723B2
公开(公告)日：2004-03-02
申请号：US09822566
申请日：2001-03-30
申请人： Zhihao Li
发明人： Zhihao Li
IPC分类号： G11B509
CPC分类号： G11B27/36 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/035 , G11B5/09 , G11B2005/0002 , G11B2005/001 , G11B2220/20
摘要： Monitoring the decay of the magnetic domains and refreshing the magnetic domains when the amount of decay has passed an established threshold allows a means to compensate for the superparamagnetic effect and increase the amount of data stored on a recording media. A high frequency reference signal and a low frequency reference signal can be written onto the magnetic media. The low frequency reference signal corresponds to large magnetic bits on the storage media surface, whereas the high frequency reference signal corresponds to small magnetic bits. Because of the large difference in decay rates between the high frequency and low frequency reference signals, any change in the difference of the two signals over time actually reflects the level of signal degradation that has occurred in the high frequency reference signal. When the difference between the high frequency and low frequency reference signal degradations exceeds a threshold level, the data is refreshed and new high and low frequency reference signals can be written on the magnetic media.
摘要翻译：当衰减量已经达到建立的阈值时，监测磁畴的衰减和刷新磁畴，使得能够补偿超顺磁效应并增加存储在记录介质上的数据量。可以将高频参考信号和低频参考信号写入磁介质。低频参考信号对应于存储介质表面上的大磁位，而高频参考信号对应于小磁头。由于高频和低频参考信号之间的衰减速率差异很大，所以随着时间的推移，两个信号的差异的任何变化实际上反映了在高频参考信号中发生的信号劣化的水平。当高频和低频参考信号劣化之间的差异超过阈值电平时，刷新数据，并将新的高频和低频参考信号写入磁介质。

2. 发明授权

US5738566A Lapping guide system, method and article of manufacture 失效
标题翻译：研磨引导系统，方法和制造
公开(公告)号：US5738566A
公开(公告)日：1998-04-14
申请号：US829219
申请日：1997-03-31
申请人： Zhihao Li , Ganesan Doraisami , Beat G. Keel
发明人： Zhihao Li , Ganesan Doraisami , Beat G. Keel
IPC分类号： B24B37/00 , G11B5/187 , G11B5/23 , G11B5/31 , B24B1/00
CPC分类号： B24B37/048 , B24B37/00 , G11B5/1871 , G11B5/232 , G11B5/3163 , G11B5/3166 , Y10T29/49037
摘要： A lapping guide system, method and article of manufacture is disclosed. A method of fabricating a lapping guide for use in conjunction with the machining of a magnetic recording transducer includes the following steps. A plurality of lap switch fingers of the lapping guide and a bottom pole of the transducer are fabricated at the same time and from the same material. Each lap switch finger has the same topology as the topology of the bottom pole. An insulating layer is fabricated on the plurality of lap switch fingers of the lapping guide and on the bottom pole of the transducer. A top conductor is fabricated on the insulating layer above a plurality of lap switch fingers, while a top pole is fabricated on the insulating layer above the bottom pole. The top conductor and top pole are fabricated at the same time and from the same material.
摘要翻译：公开了研磨引导系统，方法和制品。制造与磁记录换能器的加工一起使用的研磨导轨的方法包括以下步骤。研磨引导件的多个搭接开关指状物和换能器的底极同时和相同的材料制造。每个圈开关手指具有与底极的拓扑结构相同的拓扑结构。在研磨导轨的多个搭接开关指状物和换能器的底极上制造绝缘层。在多个搭接开关指状物上方的绝缘层上制造顶部导体，而顶极制造在底极上方的绝缘层上。顶导体和顶极同时和相同的材料制造。

3. 发明授权

US08537496B2 Perpendicular magnetic write head having a trailing wrap-around magnetic shield magnetically biased in a cross track direction 有权
标题翻译：垂直磁性写头，其具有沿横向方向磁偏置的尾部缠绕磁屏蔽
公开(公告)号：US08537496B2
公开(公告)日：2013-09-17
申请号：US12844736
申请日：2010-07-27
申请人： Zhihao Li , Xiaodong Che , Zhen Jin , Yansheng Luo
发明人： Zhihao Li , Xiaodong Che , Zhen Jin , Yansheng Luo
IPC分类号： G11B5/11
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/315
摘要： A perpendicular magnetic write head having improved Bit Error Rate (BER), Adjacent Track Interference (ATI) and Far Track Interference (FTI). The write head includes a write pole and a trailing wrap-around magnetic shield. A permanent magnetic is located at either outer side of the shield. These magnets are magnetized to have magnetizations that are oriented in the same direction, in a direction that is perpendicular to the track direction and parallel with the air bearing surface.
摘要翻译：具有改进的误码率（BER），相邻轨道干扰（ATI）和远距离干扰（FTI））的垂直磁性写入头。写头包括一个写入磁极和一个后围环绕磁屏蔽。永久磁铁位于屏蔽的外侧。这些磁体被磁化以具有在垂直于轨道方向并平行于空气轴承表面的方向上沿相同方向定向的磁化。

4. 发明申请

US20120026628A1 PERPENDICULAR MAGNETIC WRITE HEAD HAVING A TRAILING WRAP-AROUND MAGNETIC SHIELD MAGNETICALLY BIASED IN A CROSS TRACK DIRECTION 有权
标题翻译：具有缠绕缠绕磁性屏蔽的磁性写字母磁头在交叉轨迹方向上偏移
公开(公告)号：US20120026628A1
公开(公告)日：2012-02-02
申请号：US12844736
申请日：2010-07-27
申请人： Zhihao Li , Xiaodong Che , Zhen Jin , Yansheng Luo
发明人： Zhihao Li , Xiaodong Che , Zhen Jin , Yansheng Luo
IPC分类号： G11B5/17 , G11B5/48
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/315
摘要： A perpendicular magnetic write head having improved Bit Error Rate (BER), Adjacent Track Interference (ATI) and Far Track Interference (FTI). The write head includes a write pole and a trailing wrap-around magnetic shield. A permanent magnetic is located at either outer side of the shield. These magnets are magnetized to have magnetizations that are oriented in the same direction, in a direction that is perpendicular to the track direction and parallel with the air bearing surface.
摘要翻译：具有改进的误码率（BER），相邻轨道干扰（ATI）和远距离干扰（FTI））的垂直磁性写入头。写头包括一个写入磁极和一个后围环绕磁屏蔽。永久磁铁位于屏蔽的外侧。这些磁体被磁化以具有在垂直于轨道方向并平行于空气轴承表面的方向上沿相同方向定向的磁化。

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