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1. 发明授权

US06798598B2 Method for controlling write current to a write head during data write on a hard disk 有权
标题翻译：在硬盘数据写入期间控制对写入头的写入电流的方法
公开(公告)号：US06798598B2
公开(公告)日：2004-09-28
申请号：US10091411
申请日：2002-03-05
申请人： Hiroaki Suzuki , Hideo Asano , Yumi Nagano , Michio Nakajima , Masaomi Ikeda , Masashi Murai
发明人： Hiroaki Suzuki , Hideo Asano , Yumi Nagano , Michio Nakajima , Masaomi Ikeda , Masashi Murai
IPC分类号： G11B502
CPC分类号： G11B5/012 , G11B5/035 , G11B2005/0013
摘要： A method for controlling write current to a write head during data write on a hard disk drive is disclosed. A direct access storage device includes a rotating storage medium in which data are magnetically written, a write head for writing data in the rotating storage medium, and a write current control circuit for changing write current-value settings to be supplied to the write head according to a predetermined elapsed time from the beginning of a write operation.
摘要翻译：公开了一种在硬盘驱动器的数据写入期间控制对写入头的写入电流的方法。直接存取存储装置包括磁数据写入数据的旋转存储介质，用于在旋转存储介质中写入数据的写入头，以及写入电流控制电路，用于根据提供给写入头的写入电流值设定改变到从写入操作开始的预定经过时间。

2. 发明授权

US06345366B1 Method and device for error recovery 失效
标题翻译：用于错误恢复的方法和设备
公开(公告)号：US06345366B1
公开(公告)日：2002-02-05
申请号：US09555035
申请日：2000-07-17
申请人： Hideo Asano , Hiroaki Suzuki , Tatsuya Endo , Isao Yoneda , Kazuyuki Kobayashi , Haruo Andoh
发明人： Hideo Asano , Hiroaki Suzuki , Tatsuya Endo , Isao Yoneda , Kazuyuki Kobayashi , Haruo Andoh
IPC分类号： G06F1100
CPC分类号： G11B20/1816 , G11B20/1879 , G11B2020/183
摘要： An Error Recover Procedure (ERP) is disclosed which, during execution of the ERP, while self-diagnosing the cause of error, dynamically changes the error recovery steps of the ERP. An appropriate ERP is selected and executed according to the detected error status.
摘要翻译：公开了一种错误恢复过程（ERP），在ERP的执行过程中，在自我诊断错误原因的同时，动态地更改ERP的错误恢复步骤。根据检测到的错误状态选择并执行适当的ERP。

3. 发明授权

US07038870B2 Data storage device, data write method, and program 失效
标题翻译：数据存储设备，数据写入方式和程序
公开(公告)号：US07038870B2
公开(公告)日：2006-05-02
申请号：US10691757
申请日：2003-10-22
申请人： Hiroaki Suzuki , Noriaki Sato , Michiya Kazusawa , Hideo Asano
发明人： Hiroaki Suzuki , Noriaki Sato , Michiya Kazusawa , Hideo Asano
IPC分类号： G11B5/02 , G11B5/09
CPC分类号： G11B5/012 , G11B2005/001 , G11B2005/0013
摘要： A data storage device, data write method, and program to avoid extra power consumption and suppress a write error that may result from voltage variations. To write data onto a magnetic disk, a write circuit generates a write current that is to be supplied to a write head. The write circuit operates on a positive power supply voltage provided by a host computer, and on a negative power supply voltage generated by a programmable DC—DC converter mounted on a hard disk drive's card. The magnitude of the negative power supply voltage generated by the programmable DC—DC converter is varied in accordance with the temperature surrounding the magnetic disk. Further, the magnitude of the negative power supply voltage generated by the programmable DC—DC converter is varied in accordance with the magnitude of the positive power supply voltage supplied from the host computer.
摘要翻译：数据存储设备，数据写入方法和程序，以避免额外的功耗并抑制可能由电压变化引起的写入错误。为了将数据写入磁盘，写入电路产生要写入写入头的写入电流。写入电路由主机提供的正电源电压和由安装在硬盘驱动器卡上的可编程DC-DC转换器产生的负电源电压进行操作。由可编程DC-DC转换器产生的负电源电压的大小根据磁盘周围的温度而变化。此外，由可编程DC-DC转换器产生的负电源电压的大小根据从主计算机提供的正电源电压的大小而变化。

4. 发明申请

US20050141143A1 Magnetic head of magnetoresistance effect type and process for production thereof 失效
标题翻译：磁阻效应磁头及其制造方法
公开(公告)号：US20050141143A1
公开(公告)日：2005-06-30
申请号：US11009773
申请日：2004-12-10
申请人： Hiroyuki Ono , Hiroaki Suzuki , Toshio Sunaga , Hisatada Miyatake , Hideo Asano
发明人： Hiroyuki Ono , Hiroaki Suzuki , Toshio Sunaga , Hisatada Miyatake , Hideo Asano
IPC分类号： G11B5/39 , G11B5/127 , G11B5/33 , G11B5/40 , H01L43/08
CPC分类号： G11B5/39
摘要： In the case of magnetic head of magnetoresistance effect type whose breakdown voltage is as low as 0.3 V, it is impractical to ignore even a very small amount of static electricity that occurs during fabrication or use. In one embodiment, the desired magnetic head is produced by forming an SiO2 layer on a silicon slider, thereby forming an SOI substrate; forming on the SOI substrate circuits to protect a TMR element from overvoltage and a read-write circuit; forming field effect transistors from an Si semiconductor layer (formed by reduction of the SiO2 layer or epitaxial growth on the SiO2 layer); forming three electrodes (source, gate, drain) on the Si semiconductor layer; forming a Schottky diode by Schottky contact (metal) with the Si semiconductor layer; forming overvoltage protective circuits of aluminum wiring on the SOI substrate; and forming a TMR element.
摘要翻译：在其击穿电压低至0.3V的磁阻效应型磁头的情况下，即使在制造或使用期间发生的非常少量静电也是不切实际的。在一个实施例中，通过在硅滑块上形成SiO 2层来形成所需的磁头，由此形成SOI衬底; 在SOI衬底电路上形成以保护TMR元件免受过电压和读写电路; 从Si半导体层（通过SiO 2层的还原或SiO 2层上的外延生长形成）形成场效应晶体管; 在Si半导体层上形成三个电极（源极，栅极，漏极）; 通过与Si半导体层的肖特基接触（金属）形成肖特基二极管; 在SOI衬底上形成铝布线的过电压保护电路; 并形成TMR元件。

5. 发明授权

US5872671A Disk drive apparatus and read error recovery procedure therein 失效
标题翻译：磁盘驱动装置及其读取错误恢复程序
公开(公告)号：US5872671A
公开(公告)日：1999-02-16
申请号：US683679
申请日：1996-07-08
申请人： Hiroaki Suzuki , Akira Kibashi , Yoshio Yamamoto , Hideo Asano
发明人： Hiroaki Suzuki , Akira Kibashi , Yoshio Yamamoto , Hideo Asano
IPC分类号： G11B23/50 , G11B5/00 , G11B5/012 , G11B5/54 , G11B5/55 , G11B5/58 , G11B19/04 , G11B21/08 , G11B21/21
CPC分类号： G11B5/54 , G11B5/012 , G11B5/5526 , G11B5/58 , G11B19/04 , G11B2005/0016
摘要： When a sharp change in signal judged due to thermal asperities has appeared, a disk drive apparatus according to the present invention repeats the unidirectional seek operation in a region centered on the belonging cylinder position of the track in which the read error has occurred as one data recovery operation, then scrubs and removes the thermal asperities by putting the component surface around the MR head into positive contact with the asperities, thereby eliminating the fundamental cause of a read error caused by thermal asperities.
摘要翻译：当出现由于热凹凸而判断出的信号的急剧变化时，根据本发明的磁盘驱动装置在以已发生读出错误的轨道的所属汽缸位置为中心的区域中重复单向寻道操作，作为一个数据恢复操作，然后通过将MR头周围的部件表面与凹凸不平的正面接触来擦除和去除热凹凸，从而消除由热凹凸引起的读取误差的根本原因。

6. 发明授权

US07489482B2 Magnetic head of magnetoresistance effect type and process for production thereof 失效
标题翻译：磁阻效应磁头及其制造方法
公开(公告)号：US07489482B2
公开(公告)日：2009-02-10
申请号：US11009773
申请日：2004-12-10
申请人： Hiroyuki Ono , Hiroaki Suzuki , Toshio Sunaga , Hisatada Miyatake , Hideo Asano
发明人： Hiroyuki Ono , Hiroaki Suzuki , Toshio Sunaga , Hisatada Miyatake , Hideo Asano
IPC分类号： G11B5/39
CPC分类号： G11B5/39
摘要： In the case of magnetic head of magnetoresistance effect type whose breakdown voltage is as low as 0.3 V, it is impractical to ignore even a very small amount of static electricity that occurs during fabrication or use. In one embodiment, the desired magnetic head is produced by forming an SiO2 layer on a silicon slider, thereby forming an SOI substrate; forming on the SOI substrate circuits to protect a TMR element from overvoltage and a read-write circuit; forming field effect transistors from an Si semiconductor layer (formed by reduction of the SiO2 layer or epitaxial growth on the SiO2 layer); forming three electrodes (source, gate, drain) on the Si semiconductor layer; forming a Schottky diode by Schottky contact (metal) with the Si semiconductor layer; forming overvoltage protective circuits of aluminum wiring on the SOI substrate; and forming a TMR element.
摘要翻译：在其击穿电压低至0.3V的磁阻效应型磁头的情况下，即使在制造或使用期间发生的非常少量静电也是不切实际的。在一个实施例中，通过在硅滑块上形成SiO 2层来制造所需的磁头，由此形成SOI衬底; 在SOI衬底电路上形成以保护TMR元件免受过电压和读写电路; 从Si半导体层形成场效应晶体管（通过SiO 2层的还原或SiO 2层上的外延生长形成）; 在Si半导体层上形成三个电极（源极，栅极，漏极）; 通过与Si半导体层的肖特基接触（金属）形成肖特基二极管; 在SOI衬底上形成铝布线的过电压保护电路; 并形成TMR元件。

7. 发明授权

US06490115B1 Error recovery in unit using GMR sensor 失效
标题翻译：使用GMR传感器进行单位误差恢复
公开(公告)号：US06490115B1
公开(公告)日：2002-12-03
申请号：US09218724
申请日：1998-12-22
申请人： Hiroaki Suzuki , Koji Kurachi , Katsumi Suda , Hideo Asano , Kenji Okada , Makoto Takase , Akira Kibashi , Hiromi Nishimiya , Takao Matsui , Tatsuya Endo , Kenji Kuroki
发明人： Hiroaki Suzuki , Koji Kurachi , Katsumi Suda , Hideo Asano , Kenji Okada , Makoto Takase , Akira Kibashi , Hiromi Nishimiya , Takao Matsui , Tatsuya Endo , Kenji Kuroki
IPC分类号： G11B2102
CPC分类号： G11B5/09 , G11B19/04
摘要： A method and apparatus for recovering from operation errors arising in an information recording and reproducing unit using a head with a GMR sensor is described. The read and write operations of the unit comprise executing a first error recovery procedure for recovering the operation error, executing a first GMR evaluation procedure for evaluating the performance of the GMR sensor when the operation error cannot be recovered by the first error recovery procedure, and applying a resetting pulse to the GMR sensor in accordance with the first GMR evaluation procedure.
摘要翻译：描述了使用具有GMR传感器的头的信息记录和再现单元中出现的操作错误恢复的方法和装置。该单元的读写操作包括执行用于恢复操作错误的第一错误恢复过程，当通过第一错误恢复过程无法恢复操作错误时，执行用于评估GMR传感器的性能的第一GMR评估过程，以及根据第一GMR评估程序将复位脉冲施加到GMR传感器。

8. 发明授权

US06304405B1 Method and apparatus for controlling read and/or write operations of a disk drive device during start-up 失效
标题翻译：用于在启动期间控制磁盘驱动器件的读取和/或写入操作的方法和装置
公开(公告)号：US06304405B1
公开(公告)日：2001-10-16
申请号：US09115158
申请日：1998-07-14
申请人： Hideo Asano , Hiroaki Suzuki
发明人： Hideo Asano , Hiroaki Suzuki
IPC分类号： G11B1546
CPC分类号： G11B19/20 , G11B25/043
摘要： A method and apparatus for reducing the amount of time from a power-on status to a ready status of a hard disk drive device. In response to a power-on of a disk drive device, the rotation of a data recording disk is started. The rotational speed of the data recording disk is increased. When it is detected that the rotational speed of the data recording disk reaches an intermediate rotational speed, which is lower than a final rotational speed of the data recording disk, the rotational speed of the data recording disk is fixed at the intermediate rotational speed. One or more control programs recorded on the data recording disk are read and then stored in a memory. Then a ready signal is sent to a host processor. The disk drive device may then receive a read command from the host processor to read data from the data recording disk and to transfer the data to the host processor is detected. The rotational speed of the data recording disk is increased from the intermediate rotational speed to the final rotational speed. A normal read/write operation of the disk drive device begins when it is detected that the data recording disk reaches its final rotational speed.
摘要翻译：一种用于减少从开机状态到硬盘驱动器设备的就绪状态的时间量的方法和装置。响应于磁盘驱动设备的通电，数据记录盘的旋转开始。数据记录盘的转速增加。当检测到数据记录盘的转速达到低于数据记录盘的最终转速的中间转速时，数据记录盘的转速被固定在中间转速。读取记录在数据记录盘上的一个或多个控制程序，然后将其存储在存储器中。然后就绪信号被发送到主机处理器。磁盘驱动器装置然后可以从主机处理器接收读取命令以从数据记录盘读取数据，并且检测到将数据传送到主机处理器。数据记录盘的旋转速度从中间旋转速度增加到最终旋转速度。当检测到数据记录盘达到其最终转速时，盘驱动装置的正常读/写操作开始。

9. 发明授权

US06275028B1 Methods for initializing and/or resetting GMR heads by applying oppositely directed magnetic fields 失效
标题翻译：通过施加相反方向的磁场来初始化和/或复位GMR磁头的方法
公开(公告)号：US06275028B1
公开(公告)日：2001-08-14
申请号：US09220808
申请日：1998-12-23
申请人： Takao Matsui , Tatsuya Endo , Hiroaki Suzuki , Kenji Kuroki , Katsushi Yamaguchi , Hideo Asano
发明人： Takao Matsui , Tatsuya Endo , Hiroaki Suzuki , Kenji Kuroki , Katsushi Yamaguchi , Hideo Asano
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3166 , G11B5/3189 , G11B5/455 , G11B5/465 , G11B5/4806 , G11B2005/0008 , G11B2005/0016 , G11B2005/3996 , Y10T29/49034
摘要： In accordance with the present invention, the initialization for orienting the magnetized directions of the free layers of GMR heads (mounted on the diagonally shaded surface of sliders 14) by an external magnetic field is again executed also for the opposite direction, thereby to increase the yield of the GMR heads. Further, it is determined whether the magnetized direction of the pinned layer of GMR heads can be once reversed to the opposite direction, thereby to select damaged GMR heads at an early stage. Then, by performing a reset while performing a quasi-static test for seeing the read back response of the GMR head after restoring the magnetized direction of the pinned layer to a positive rotation, a safe and efficient reset is executed. The reset can be executed not only by applying only a pulse, but also while providing an external magnetic field in the pinning direction, or only by giving a high magnetic field. A tool 500 can be commonly used for the initialization, reset, or read back response through each process level. For the quasi-static test, coils 531, 532, and 533 are selectively used as Helmholz coils.
摘要翻译：根据本发明，用于通过外部磁场定向GMR磁头自由层（安装在滑块14的斜面阴影表面上）的磁化方向的初始化也对于相反方向也被执行，从而增加产量的GMR头。此外，确定GMR磁头的被钉扎层的磁化方向是否可以反向一个相反的方向，从而在早期阶段选择损坏的GMR磁头。然后，通过在将被钉扎层的磁化方向恢复到正旋转之后执行用于观察GMR头的回读响应的准静态测试执行复位，执行安全且有效的复位。该复位不仅可以通过仅施加脉冲而且可以在钉扎方向上提供外部磁场，或者仅通过施加高磁场来执行。工具500可以通常用于通过每个处理级别的初始化，复位或回读响应。对于准静态测试，线圈531,532和533被选择性地用作Helmholz线圈。

10. 发明授权

US6061805A Method for executing an error recovery procedure 失效
标题翻译：执行错误恢复过程的方法
公开(公告)号：US6061805A
公开(公告)日：2000-05-09
申请号：US969204
申请日：1997-11-12
申请人： Hiroaki Suzuki , Hideo Asano , Atsushi Tobari , Satoshi Nishino , Shuji Yamada , Haruo Andoh , Tsuguaki Kowa
发明人： Hiroaki Suzuki , Hideo Asano , Atsushi Tobari , Satoshi Nishino , Shuji Yamada , Haruo Andoh , Tsuguaki Kowa
IPC分类号： G06F3/06 , G06F11/00 , G11B19/00 , G11B19/04 , G11B20/00 , G11B20/10 , G11B20/18
CPC分类号： G11B19/041
摘要： An error recovery procedure (ERP) in a storage device such as a rotating magnetic hard disk drive is executed to the last step regardless of the established time-out period for an instruction, thereby more reliably recovering from errors. In accordance with one embodiment of the invention, when a disk drive receives a reset instruction from a host during the execution of an ERP, it executes the ERP until the error is recovered, or to the last step without interrupting the ERP. Further, in accordance with another embodiment of the invention, when a disk drive receives a reset instruction during the execution of an ERP, it stops execution of the ERP and holds the number K of the step which was completed immediately before stopping, and when receiving a retry instruction after that, sequentially executes the ERP from the K+1-th error recovery step.
摘要翻译：执行诸如旋转磁盘驱动器的存储装置中的错误恢复过程（ERP）到最后步骤，而不管建立的指令的超时周期，从而更可靠地从错误中恢复。根据本发明的一个实施例，当磁盘驱动器在执行ERP期间从主机接收到重置指令时，它执行ERP直到错误被恢复，或者直到最后一步而不中断ERP。此外，根据本发明的另一实施例，当磁盘驱动器在执行ERP期间接收到重置指令时，它停止执行ERP并保持在停止之前立即完成的步骤的数量K，并且当接收到之后的重试指令，从第K + 1错误恢复步骤顺序地执行ERP。

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