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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

US06650491B2 System and method for setting a read/write offset and for recovering from data read errors 失效
标题翻译：用于设置读/写偏移量和从数据读取错误中恢复的系统和方法
公开(公告)号：US06650491B2
公开(公告)日：2003-11-18
申请号：US09791445
申请日：2001-02-23
申请人： Hiroaki Suzuki , Kaoru Umemura , Akira Shibata , Tatsuya Endoh , Takao Matsui , Masaomi Ikeda , Junji Hashimoto
发明人： Hiroaki Suzuki , Kaoru Umemura , Akira Shibata , Tatsuya Endoh , Takao Matsui , Masaomi Ikeda , Junji Hashimoto
IPC分类号： G11B2736
CPC分类号： G11B5/012 , G11B5/4886 , G11B5/59611 , G11B21/106 , G11B2005/001
摘要： An RW offset setting method which includes recording a test pattern by a write head, reading the test pattern by a read head, measuring an amplitude of a read back signal at each tracking position, finding an approximate expression of a profile of the measured amplitude, finding a tracking position, and finding a RW offset based on this tracking position, setting a RW offset for all tracks in the disk device based on the RW offsets about the plurality of tracks to be measured. A read data error recovery method that includes the steps of determining an off-track direction where the amplitude increases, searching an off-track position where the amplitude becomes a local maximum, measuring the amplitude at each off-track position reading data recorded in the data sector.
摘要翻译：一种RW偏移设置方法，包括通过写入头记录测试图案，通过读取头读取测试图案，测量每个跟踪位置处的回读信号的幅度，找到测量幅度的轮廓的近似表达，找到跟踪位置，并且基于该跟踪位置找到RW偏移，基于关于待测量的多个轨迹的RW偏移来设置盘装置中的所有轨道的RW偏移。一种读取数据错误恢复方法，包括以下步骤：确定幅度增加的偏离磁道方向，搜索幅度变为局部最大值的偏离磁道位置，测量记录在数据部门。

3. 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。

4. 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。

5. 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。

6. 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。

7. 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。

8. 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。

9. 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。

10. 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。

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