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1. 发明授权

US5109311A Magnetic disk device and method of recording/retrieving information 失效
标题翻译：磁盘设备和记录/检索信息的方法
公开(公告)号：US5109311A
公开(公告)日：1992-04-28
申请号：US700095
申请日：1991-05-06
申请人： Masanobu Hanazono , Shinji Narishige , Yutaka Sugita , Hiroshi Fukui , Hirotsugu Fukuoka , Hajime Aoi , Masayuki Katsumoto , Takuji Ogawa , Jun Naruse , Yokuo Saitoh
发明人： Masanobu Hanazono , Shinji Narishige , Yutaka Sugita , Hiroshi Fukui , Hirotsugu Fukuoka , Hajime Aoi , Masayuki Katsumoto , Takuji Ogawa , Jun Naruse , Yokuo Saitoh
IPC分类号： C09D5/23 , C09D7/12 , G11B5/012 , G11B5/02 , G11B5/09 , G11B5/31 , G11B5/82
CPC分类号： G11B5/09 , G11B5/012 , G11B5/3116 , G11B5/82
摘要： This invention provides a magnetic disk device having a total memory capacity of 30 giga bytes or more, or more desirably 30.about.40 giga bytes. The magnetic disk used in this magnetic disk device has a plane record density of 45.about.80 mega bits per square inch. The thin film magnetic head has a pole thickness (P.sub.T), a magnetic flux density (B.sub.s), a magnetic gap depth (G.sub.d) and a record wavelenth (.lambda.) which satisfy the formulaG.sub.d .ltoreq.0.13 P.sub.T B.sub.s (.lambda.+4.3)-2.1.The magnetic disk rotation means rotate the magnetic disk at a speed of 24 m per second or more.
摘要翻译：本发明提供了一种总存储容量为30千兆字节或更多，或更优选为30个差异40千兆字节的磁盘装置。在该磁盘装置中使用的磁盘的平面记录密度为每平方英寸80万比特的平均记录密度。薄膜磁头具有满足公式Gd

2. 发明授权

US5671107A Large capacity magnetic disc apparatus with a particular relationship between pole thickness, saturated flux density, and recording wavelength 失效
标题翻译：大容量磁盘装置，其磁极厚度，饱和磁通密度和记录波长之间具有特定关系
公开(公告)号：US5671107A
公开(公告)日：1997-09-23
申请号：US399221
申请日：1995-03-06
申请人： Katsuya Mitsuoka , Hiroshi Fukui , Makoto Aihara , Masanori Tanabe , Moriaki Fuyama , Shinji Narishige , Yutaka Sugita , Yoshihiro Shiroishi , Hajime Aoi , Yokuo Saitoh , Kanji Kawakami , Yoshikazu Tsuji , Masaaki Hayashi , Kazuo Nakagoshi
发明人： Katsuya Mitsuoka , Hiroshi Fukui , Makoto Aihara , Masanori Tanabe , Moriaki Fuyama , Shinji Narishige , Yutaka Sugita , Yoshihiro Shiroishi , Hajime Aoi , Yokuo Saitoh , Kanji Kawakami , Yoshikazu Tsuji , Masaaki Hayashi , Kazuo Nakagoshi
IPC分类号： G11B5/012 , G11B5/39 , G11B5/31 , G11B5/60
CPC分类号： G11B5/012 , G11B5/39
摘要： A magnetic disc apparatus has a large recording density of 120 megabits per square inch or more, and defines a relationship among a pole thickness (Pt) of thin-film magnetic heads disposed in the magnetic disc apparatus, and a saturation flux density (Bs) of cores of the heads and a recording wavelength (.lambda.) for the thin film magnetic discs have a coercivity of 1800 Oe or more, wherein a levitation space between the head and the disc is 0.15 .mu.m or less.
摘要翻译：磁盘装置具有120兆比特每平方英寸或更大的记录密度，并且限定了设置在磁盘装置中的薄膜磁头的极厚度（Pt）与饱和磁通密度（Bs）之间的关系，的磁头的磁芯和用于薄膜磁盘的记录波长（λ）具有1800Oe或更高的矫顽力，其中磁头和磁盘之间的悬浮空间为0.15μm或更小。

3. 发明授权

US5568331A Method of head positioning and magnetic recording disk drive using the same 失效
标题翻译：磁头定位和磁记录磁盘驱动器的使用方法
公开(公告)号：US5568331A
公开(公告)日：1996-10-22
申请号：US603320
申请日：1990-10-25
申请人： Kyo Akagi , Masaaki Futamoto , Fumio Kugiya , Yoshinori Miyamura , Hisashi Takano , Yoshibumi Matsuda , Mikio Suzuki , Takeshi Nakao , Takayuki Munemoto , Hirotsugu Fukuoka , Makoto Aihara , Tokuho Takagaki , Hajime Aoi , Yosuke Seo
发明人： Kyo Akagi , Masaaki Futamoto , Fumio Kugiya , Yoshinori Miyamura , Hisashi Takano , Yoshibumi Matsuda , Mikio Suzuki , Takeshi Nakao , Takayuki Munemoto , Hirotsugu Fukuoka , Makoto Aihara , Tokuho Takagaki , Hajime Aoi , Yosuke Seo
IPC分类号： G11B5/584 , G11B5/596
CPC分类号： G11B5/59688 , G11B5/584
摘要： A method and device of head positioning in an information recording/reading device in which a magnetic recording medium with data tracks for recording information thereon is provided and a magnetic head is positioned on the data track to record/read out the information, wherein a data signal is recorded in the data recording layer of said recording medium, a servo signal is recorded in the servo signal recording layer located below said data signal recording layer, said data signal is read out using a data magnetic head whereas said servo signal is read out using a servo magnetic head, and the frequency of said servo signal is within the range of the gap-null frequency of said data magnetic head whereas the frequency of said data signal is within the range of the gap-null frequency of said servo magnetic head, and said magnetic head is positioned on the data track on the basis of said servo signal. A method and device of head positioning in an information recording/reading device in which a magnetic recording medium with data tracks for recording information thereon is provided and a magnetic head is positioned on the data track to record/read out the information, wherein the data tracks are discrete tracks in which adjacent data tracks are separated by a groove located therebetween, a data signal is recorded on the data track of said recording medium, a servo signal is recorded on the servo tracks of grooves between said adjacent data tracks, and said magnetic head is positioned on the data track on the basis of said servo signal.
摘要翻译：一种在信息记录/读取装置中头部定位的方法和装置，其中提供具有用于记录信息的数据轨道的磁记录介质，并且磁头位于数据轨道上以记录/读出信息，其中数据信号被记录在所述记录介质的数据记录层中，伺服信号被记录在位于所述数据信号记录层下方的伺服信号记录层中，所述数据信号使用数据磁头读出，而所述伺服信号被读出使用伺服磁头，并且所述伺服信号的频率在所述数据磁头的间隙零频率的范围内，而所述数据信号的频率在所述伺服磁头的间隙空位频率的范围内并且所述磁头基于所述伺服信号位于数据轨道上。一种在信息记录/读取装置中头部定位的方法和装置，其中提供具有用于记录信息的数据轨道的磁记录介质，并且磁头位于数据轨道上以记录/读出信息，其中数据轨道是离散轨道，其中相邻数据轨道由位于其间的凹槽分开，数据信号被记录在所述记录介质的数据轨道上，伺服信号被记录在所述相邻数据轨道之间的凹槽的伺服轨道上，并且所述磁头基于所述伺服信号位于数据轨道上。

4. 发明授权

US6069762A Magnetic recording drive having arrangement for averaging useful life of magnetoresistive effect sensors 有权
标题翻译：具有用于平均磁阻效应传感器的使用寿命的装置的磁记录驱动器
公开(公告)号：US6069762A
公开(公告)日：2000-05-30
申请号：US350139
申请日：1999-07-09
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 , G11B15/12 , G11B5/127
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。

5. 发明授权

US6014275A Magnetic recording drive 失效
标题翻译：磁记录驱动
公开(公告)号：US6014275A
公开(公告)日：2000-01-11
申请号：US701705
申请日：1996-08-22
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
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。

6. 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。

7. 发明授权

US06243824B1 Array disk subsystem 失效
标题翻译：阵列磁盘子系统
公开(公告)号：US06243824B1
公开(公告)日：2001-06-05
申请号：US08355210
申请日：1994-12-09
申请人： Hitoshi Kakuta , Yoshihisa Kamo , Hajime Aoi
发明人： Hitoshi Kakuta , Yoshihisa Kamo , Hajime Aoi
IPC分类号： H02H305
CPC分类号： G06F11/1076 , G06F3/0601 , G06F11/1466 , G06F2003/0692 , G06F2211/109
摘要： An array disk subsystem including a command selector for separating a signal from a host into a data item and a command, a data dividing unit for subdividing the data item, an ECC generator for producing an ECC for each of the obtained subdata items, a group of data disks for respectively storing thereon the subdata items and the ECCs, a command interpreting unit for interpreting the command, an I/O counter for counting I/O commands in the command, a backup processor for requesting a backup command based on count information of the I/O counter, and a backup unit responsive to the backup command for sequentially reading the subdata items and the ECCs from the data disks to record therein the subdata items and the ECCs.
摘要翻译：一种阵列磁盘子系统，包括用于将信号从主机分离为数据项和命令的命令选择器，用于细分数据项的数据划分单元，用于为每个所获得的子数据项产生ECC的ECC产生器，用于分别存储子数据项和ECC的数据磁盘，用于解释命令的命令解释单元，用于对命令中的I / O命令进行计数的I / O计数器，用于根据计数信息请求备份命令的备份处理器的I / O计数器，以及响应于备份命令的备份单元，用于从数据盘顺序读取子数据项和ECC，以在其中记录子数据项和ECC。

8. 发明授权

US5287228A Peak detection method and apparatus therefor 失效
标题翻译：峰值检测方法及其装置
公开(公告)号：US5287228A
公开(公告)日：1994-02-15
申请号：US738627
申请日：1991-07-31
申请人： Hideki Sawaguchi , Yasuhide Ouchi , Hajime Aoi
发明人： Hideki Sawaguchi , Yasuhide Ouchi , Hajime Aoi
IPC分类号： G11B5/09 , G11B20/10 , G11B20/14 , G11B5/02
CPC分类号： G11B20/10212 , G11B20/1423 , G11B20/1426 , G11B5/09
摘要： The time interval/amplitude level difference between sequential peaks in waveforms of first reproducing signals from a recording medium is detected and stored in a storage. The time interval/amplitude level difference between peaks in a waveform of a second reproducing signal from the recording medium is detected and compared with the time interval/amplitude level difference stored in the storage to thereby perform peak detection in the waveforms thereof. An original bit train of the first reproducing signal corresponding to a maximum-likelihood waveform selected among the waveforms of the first reproducing signals is given as a standardized signal. Data are provided to represent the time interval/amplitude level difference between the sequential peaks in the waveforms of the reproducing signals in a range of electromagnetic signal interference on the recording medium.
摘要翻译：来自记录介质的第一再现信号的波形中的连续峰值之间的时间间隔/振幅电平差被检测并存储在存储器中。检测来自记录介质的第二再现信号的波形中的峰值之间的时间间隔/振幅电平差，并将其与存储在存储器中的时间间隔/振幅电平差进行比较，从而在其波形中进行峰值检测。将与第一再现信号的波形中选择的最大似然波形对应的第一重放信号的原始比特串作为标准化信号。提供数据以表示记录介质上的电磁信号干扰范围内的再现信号的波形中的顺序峰值之间的时间间隔/幅度电平差。

9. 发明授权

US4907100A Readout circuit in magnetic recording device 失效
标题翻译：磁记录装置中的读出电路
公开(公告)号：US4907100A
公开(公告)日：1990-03-06
申请号：US248123
申请日：1988-09-23
申请人： Nobumasa Nishiyama , Makoto Saito , Yasuhide Ouchi , Yasuhiro Katoh , Yoshihasa Kamo , Makoto Koizumi , Hajime Aoi , Naoki Sato , Reijiro Tsuchiya
发明人： Nobumasa Nishiyama , Makoto Saito , Yasuhide Ouchi , Yasuhiro Katoh , Yoshihasa Kamo , Makoto Koizumi , Hajime Aoi , Naoki Sato , Reijiro Tsuchiya
IPC分类号： G11B5/035 , G11B20/10 , G11B20/18
CPC分类号： G11B20/10212 , G11B20/182 , G11B5/035
摘要： A readout circuit in magnetic recording device is disclosed, in which a test data signal for detecting an error in the characteristics of an automatic equalizer is recorded in a predetermined position of each track of a magnetic recording medium. In readout mode, a test data signal for a selected track is read out first, and this signal is compared with a reference signal dependent on the system conditions to determine an error from the reference signal. The optimum equalization coefficient is determined to eliminate this error from the reference signal and is set in the equalizer. The data is readout under the optimum equalization characteristics thus set.
摘要翻译：公开了一种磁记录装置中的读出电路，其中用于检测自动均衡器的特性误差的测试数据信号被记录在磁记录介质的每个磁迹的预定位置。在读出模式下，首先读取所选轨道的测试数据信号，并根据系统条件将该信号与参考信号进行比较，以确定参考信号的误差。确定最佳均衡系数以从参考信号中消除该误差，并将其设置在均衡器中。在如此设置的最佳均衡特性下读出数据。

10. 发明授权

US4249219A Current drive circuit for an induction coil 失效
标题翻译：感应线圈的电流驱动电路
公开(公告)号：US4249219A
公开(公告)日：1981-02-03
申请号：US42590
申请日：1979-05-24
申请人： Hajime Aoi , Takashi Tamura , Makoto Koizumi , Noboru Kunimi , Minoru Enomoto , Noriaki Hatanaka
发明人： Hajime Aoi , Takashi Tamura , Makoto Koizumi , Noboru Kunimi , Minoru Enomoto , Noriaki Hatanaka
IPC分类号： G11B5/09 , G11B5/02 , H03K17/64
CPC分类号： G11B5/02 , H03K17/64
摘要： A current drive circuit for an induction coil is provided comprising a clamp circuit connected to the two terminals of the coil. This clamp circuit prevents the voltages of the two terminals from dropping below a reference voltage, thereby preventing decreases of the amplifier constants h.sub.FE of the transistors which are also coupled to the two terminals for a read-out operation.
摘要翻译：提供一种用于感应线圈的电流驱动电路，包括连接到线圈的两个端子的钳位电路。该钳位电路防止两个端子的电压下降到参考电压以下，从而防止也耦合到两个端子用于读出操作的晶体管的放大器常数hFE的降低。

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