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51. 发明授权

US07804663B2 High frequency interconnect signal transmission lines 有权
标题翻译：高频互连信号传输线
公开(公告)号：US07804663B2
公开(公告)日：2010-09-28
申请号：US11643269
申请日：2006-12-20
申请人： Toshiki Hirano , Nobumasa Nishiyama , Haruhide Takahashi
发明人： Toshiki Hirano , Nobumasa Nishiyama , Haruhide Takahashi
IPC分类号： G11B5/48
CPC分类号： G11B5/4853 , G11B5/5552
摘要： A micro-electromechanical signal transmission line is made from an electrically conductive material. It has a first distal end and a second distal end. The second distal end is free to move with respect to said first distal end. There exists an unsupported region between the first distal end and the second distal end. The unsupported region is juxtaposed at a controlled distance from at least one grounded conductive surface.
摘要翻译：微机电信号传输线由导电材料制成。它具有第一远端和第二远端。第二远端相对于所述第一远端自由移动。在第一远端和第二远端之间存在无支撑区域。未受支撑的区域与至少一个接地的导电表面在可控的距离处并置。

52. 发明授权

US07417209B2 Recording disk drive with reduced noise thermal flyheight control 有权
标题翻译：记录磁盘驱动器，降低噪音热敏高度控制
公开(公告)号：US07417209B2
公开(公告)日：2008-08-26
申请号：US11361561
申请日：2006-02-24
申请人： John Contreras , Takashi Ikeda , Yumi Nagano , Nobumasa Nishiyama , Toyomi Ohsawa , Mike Suk
发明人： John Contreras , Takashi Ikeda , Yumi Nagano , Nobumasa Nishiyama , Toyomi Ohsawa , Mike Suk
IPC分类号： H05B1/02
CPC分类号： G11B5/4853 , G11B5/6005 , G11B5/6064
摘要： A system and method for preventing crosstalk noise from being superimposed on a read signal due to noise from a heater line for a slider in a recording disk drive is disclosed. A heater line pair to the slider is not grounded but is in a floating state with respect to an actuator support structure. A heater driver allows a heater current to flow between a positive power supply voltage and a negative power supply voltage. The heater line pair is not grounded, so an impedance is high as viewed from a magnetic disk. Thus, it is possible to effectively suppress a noise transmitted from the magnetic disk and read signal quality is kept from deteriorating due to the crosstalk from the heater line.
摘要翻译：公开了一种用于防止由于记录盘驱动器中的滑块的加热器线的噪声而引起的串扰噪声叠加在读信号上的系统和方法。与滑块相对的加热器线对不接地，而是相对于致动器支撑结构处于浮动状态。加热器驱动器允许加热器电流在正电源电压和负电源电压之间流动。加热线对不接地，因此从磁盘观察时阻抗较高。因此，可以有效地抑制从磁盘传递的噪声，并且由于来自加热器线的串扰，读取信号质量不会劣化。

53. 发明申请

US20080014467A1 Thin film magnetic head 有权
标题翻译：薄膜磁头
公开(公告)号：US20080014467A1
公开(公告)日：2008-01-17
申请号：US11787097
申请日：2007-04-12
申请人： Takayoshi Ohtsu , Nobumasa Nishiyama
发明人： Takayoshi Ohtsu , Nobumasa Nishiyama
IPC分类号： G11B5/39
CPC分类号： G11B5/3136 , B82Y10/00 , B82Y25/00 , G11B5/115 , G11B5/3909 , G11B5/3912 , G11B5/3967 , G11B5/6005 , G11B5/6064 , Y10T428/1136
摘要： For a Tunneling Magnetoresistive (TMR) element, an electrode is used as a magnetic shield or vice versa. This can pose a problem in that noise from a heater source or electromagnetic induction has a direct influence on the TMR element, namely, on a read signal. According to one embodiment of the present invention, however, a thin film head portion has an insulating film, a heater, an electromagnetic shield, a read element, and a write element laminated in this order from the side of a slider. Insulating films isolate the constituent elements above from each other, and a protection film covers the group mentioned above. The heater is a thin film resistive element made of NiCr or the like, and is disposed above the insulating film. The electromagnetic shield is a magnetic film made of permalloy or the like, and covers the heater. The read element comprises a lower shield and electrode, a TMR element, and an upper shield and electrode. The write element comprises a lower magnetic pole piece, an upper magnetic pole piece, and a coil formed therebetween. The thin film head portion is formed with a common terminal.
摘要翻译：对于隧道磁阻（TMR）元件，电极用作磁屏蔽，反之亦然。这可能引起来自加热器源或电磁感应的噪声对TMR元件的直接影响，即读取信号的问题。然而，根据本发明的一个实施例，薄膜头部分具有从滑块的侧面依次层叠的绝缘膜，加热器，电磁屏蔽，读取元件和写入元件。绝缘膜将上述构成元件彼此隔离，并且保护膜覆盖上述组。加热器是由NiCr等制成的薄膜电阻元件，并且设置在绝缘膜的上方。电磁屏蔽是由坡莫合金等制成的磁膜，并覆盖加热器。读取元件包括下屏蔽和电极，TMR元件，以及上屏蔽和电极。写元件包括下磁极片，上磁极片和在它们之间形成的线圈。薄膜头部形成有公共端子。

54. 发明授权

US07319573B2 Magnetic disk drive having a suspension mounted transmission line including read and write conductors and a lower conductor 失效
标题翻译：磁盘驱动器具有悬挂安装的传输线，包括读写导体和下导体
公开(公告)号：US07319573B2
公开(公告)日：2008-01-15
申请号：US10870573
申请日：2004-06-16
申请人： Nobumasa Nishiyama
发明人： Nobumasa Nishiyama
IPC分类号： G11B5/48
CPC分类号： H05K1/0253 , G11B5/4833 , G11B5/484 , G11B5/486 , G11B33/08 , H05K1/0245 , H05K1/056 , H05K2201/09236 , H05K2201/09318
摘要： Embodiments of the invention provide a magnetic disk drive which has improved electrical properties owing to a reduction in the loss of transmission line, improved vibration properties owing to a reduction in the stiffness of wiring around the head, and a flat impedance in the transmission line. In one embodiment, a magnetic disk drive comprises a suspension; a magnetic head coupled with the suspension and configured to write and read information to and from a magnetic recording medium; and a transmission line disposed on the suspension to transmit writing and reading information to and from the magnetic head. The transmission line includes a writing line and a reading line, a lower conductor disposed underneath the writing line and the reading line, and an insulating layer interposed between the lower conductor and the writing and reading lines. The lower conductor comprises copper or copper-based alloy and has a thickness of substantially less than 25 μm, desirably about 2-12 μm, and more desirably about 5 μm.
摘要翻译：本发明的实施例提供了一种磁盘驱动器，其由于传输线损耗的减少，由于头部周围的布线刚度的降低以及传输线中的平坦阻抗而导致的改善的振动特性而具有改善的电性能。在一个实施例中，磁盘驱动器包括悬架; 磁头与所述悬架耦合并被配置为向磁记录介质写入和读取信息; 以及设置在所述悬架上的传输线，用于向所述磁头发送写入信息和从所述磁头读取信息。传输线包括写入线和读取线，设置在写入线和读取线下方的下部导体以及插入在下部导体和写入和读取线之间的绝缘层。下导体包括铜或铜基合金，其厚度基本上小于25μm，理想的是约2-12μm，更理想的是约5μm。

55. 发明授权

US5572379A Magnetic recording drive having arrangements for average useful life of magnetorestive effects sensors 失效
标题翻译：磁记录驱动器具有磁悬浮效应传感器的平均使用寿命的布置
公开(公告)号：US5572379A
公开(公告)日：1996-11-05
申请号：US305193
申请日：1994-09-13
申请人： Hajime Aoi , Toshiaki Tsuyoshi , Makoto Koizumi , Nobumasa Nishiyama , Yoshibumi Matsuda , Takuji Ogawa , Kazuhisa Shiraishi
发明人： Hajime Aoi , Toshiaki Tsuyoshi , Makoto Koizumi , Nobumasa Nishiyama , Yoshibumi Matsuda , Takuji Ogawa , Kazuhisa Shiraishi
IPC分类号： G11B5/02 , G11B5/00 , G11B5/012 , G11B5/09 , G11B5/39 , G11B5/40 , G11B5/55 , G11B5/596 , G11B19/02 , G11B19/04 , G11B27/30 , G11B27/36 , G11B5/03 , G11B5/127 , G11B5/33
CPC分类号： G11B19/04 , G11B19/02 , G11B27/3027 , G11B27/36 , G11B5/00 , G11B5/012 , G11B5/40 , G11B5/5547 , G11B2005/0016 , G11B2005/0018 , G11B5/59683
摘要： In a magnetic recording drive having a plurality of magnetic heads each employing a magnetoresistive sensor for the purpose of averaging the time required for sense currents to be caused to flow through the respective magnetoresistive sensors to shorten the longest reproducing time and to suppress the degradation of the characteristics due to the electromigration, thereby improving the reliability of the magnetic recording drive, the magnetic recording drive includes circuits for averaging the useful life depending on the currents caused to flow through the respective magnetoresistive sensors among the plurality of magnetic heads, whereby the time required for the sense current to be caused to flow through one MR reproducing head is greatly shortened. Therefore, the levels of outputs of the MR reproducing heads can be increased without reduction of the reliability and thus the reliability of the magnetic recording drive can be improved.
摘要翻译：在具有多个磁头的磁记录驱动器中，每个磁头采用磁阻传感器，用于平均要使感应电流流过各磁阻传感器所需的时间，以缩短最长再现时间并抑制由于电迁移的特性，从而提高了磁记录驱动器的可靠性，磁记录驱动器包括用于根据流过多个磁头中的相应磁阻传感器的电流来平均使用寿命的电路，由此所需的时间使得通过一个MR再现头流动的感测电流大大缩短。因此，可以在不降低可靠性的情况下增加MR再现头的输出电平，从而可以提高磁记录驱动器的可靠性。

56. 发明授权

US5337198A Digital magnetic writing and reading apparatus 失效
标题翻译：数字磁读写装置
公开(公告)号：US5337198A
公开(公告)日：1994-08-09
申请号：US909997
申请日：1992-07-07
申请人： Nobumasa Nishiyama , Toshiaki Tsuyoshi , Hajime Aoi , Tetsuji Kameoka , Masaya Tanaka , Kazuhisa Shiraishi
发明人： Nobumasa Nishiyama , Toshiaki Tsuyoshi , Hajime Aoi , Tetsuji Kameoka , Masaya Tanaka , Kazuhisa Shiraishi
IPC分类号： G11B5/09 , G11B5/035
CPC分类号： G11B5/09 , G11B20/10046
摘要： A waveform equalizer for processing a signal read by a magnetic head from a magnetic written medium includes a slimming circuit which, in turn, has a first delay unit for delaying the read signal, a first attenuator connected in parallel with the first delay unit, a first differentiating circuit for receiving the output from the first delay unit and the output from the first attenuator, and a resistor connected to a first delay unit side input of the first differential circuit; and a pseudo-peak elimination circuit connected in series with the slimming circuit and including a circuit for separating the from the read signal the read signal or a signal reverse in phase to the read signal, a second delay unit for delaying the separated signal, a second attenuator for attenuating the amplitude of the separated signal, and a second differential circuit for receiving the read signal and the separated, delayed and attenuated signal.
摘要翻译：用于处理由磁性写入介质由磁头读取的信号的波形均衡器包括减弱电路，该减幅电路又具有用于延迟读取信号的第一延迟单元，与第一延迟单元并联连接的第一衰减器，用于接收来自第一延迟单元的输出和来自第一衰减器的输出的第一微分电路，以及连接到第一差分电路的第一延迟单元侧输入的电阻器; 以及与所述减肥电路串联连接的伪峰值消除电路，并且包括用于将读取信号或相反相反的信号与读取信号分离的读取信号的电路，用于延迟分离的信号的第二延迟单元，第二衰减器，用于衰减分离信号的振幅;以及第二差分电路，用于接收读取信号和分离的，延迟和衰减的信号。

57. 发明授权

US4644424A Equalizer used for magnetic storage device 失效
标题翻译：用于磁存储设备的均衡器
公开(公告)号：US4644424A
公开(公告)日：1987-02-17
申请号：US685118
申请日：1984-12-21
申请人： Nobumasa Nishiyama , Hajime Aoi , Takashi Tamura , Yasuhide Ouchi , Makoto Saitou
发明人： Nobumasa Nishiyama , Hajime Aoi , Takashi Tamura , Yasuhide Ouchi , Makoto Saitou
IPC分类号： G11B5/035 , G11B5/09 , H03H15/00 , H03H17/00 , H03H21/00 , H04B3/04 , G11B5/02 , H03H11/06 , H04B3/14
CPC分类号： G11B5/035 , G11B5/09
摘要： An equalizer equalizes a reproduced waveform reproduced by a thin film magnetic head by reproducing information recorded magnetically on a medium. In the equalizer, the reproduced waveform is delayed to a position of an undershot portion, and is attenuated to an amplitude corresponding to a magnitude of the undershot portion, and the resultant waveform is superposed on the reproduced waveform, to thereby eliminate the undershot portion. Furthermore, by superposing a waveform obtained by inverting the reproduced waveform and amplifying or attenuating the inverted waveform, on the reproduced waveform at a half power position thereof, the width is narrowed.
摘要翻译：均衡器通过再现磁介质上记录的信息来均衡由薄膜磁头再现的再现波形。在均衡器中，再生波形被延迟到下方的位置，并且被衰减到对应于低音部分的幅度的振幅，并且所得到的波形叠加在再现波形上，从而消除了低音部分。此外，通过叠加通过反转再现波形而获得的波形并放大或衰减反相波形，在其半功率位置处的再现波形上，宽度变窄。

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