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1. 发明授权

US07295396B2 Magnetic disk drive 失效
标题翻译：磁盘驱动器
公开(公告)号：US07295396B2
公开(公告)日：2007-11-13
申请号：US10877157
申请日：2004-06-24
申请人： Akio Shioya , Akira Kojima
发明人： Akio Shioya , Akira Kojima
IPC分类号： G11B5/596
CPC分类号： G11B5/5547
摘要： Embodiments of the present invention reduce noise and residual vibration during random access operation of a magnetic disk drive. The magnetic disk drive which executes each instruction from an upper device to move a magnetic head from a start track to an end track on a magnetic disk. In one embodiment, the magnetic disk comprises a processor configured, if a seek span from the start track to the end track, according to a seeking instruction from the upper device, is equal to a preset specific length, to store the seeking instruction for the specific length in memory, and to seek an alternative position from the start track for moving the magnetic head and then seek the end track specified in the stored seeking instruction from the alternative position for moving the magnetic head.
摘要翻译：本发明的实施例在磁盘驱动器的随机存取操作期间降低噪声和残余振动。磁盘驱动器，其从上部装置执行每个指令，以将磁头从起始轨道移动到磁盘上的末端轨道。在一个实施例中，磁盘包括处理器，如果从起始轨道到结束轨道的搜索跨度根据来自上部设备的寻求指令等于预设的特定长度，则将处理器配置为存储用于并且从用于移动磁头的起始轨迹寻求替代位置，然后从用于移动磁头的替代位置寻找存储的寻道指令中指定的结束轨迹。

2. 发明授权

US06153997A Disk apparatus and method of controlling disk apparatus 有权
标题翻译：盘装置及其控制方法
公开(公告)号：US06153997A
公开(公告)日：2000-11-28
申请号：US229833
申请日：1999-01-13
申请人： Masahito Kobayashi , Iwao Oshimi , Yoshio Soyama , Akio Shioya , Yuji Hata
发明人： Masahito Kobayashi , Iwao Oshimi , Yoshio Soyama , Akio Shioya , Yuji Hata
IPC分类号： G11B5/55 , G11B5/596 , G11B21/08 , G11B21/10 , G11B21/02 , G11B5/56
CPC分类号： G11B5/59644 , G11B21/085 , G11B21/106 , G11B5/5521
摘要： A disk apparatus has a position signal detector for detecting the position of a head with a specified sampling period, a controller operating a manipulated variable to control positioning of the head using a microprocessor and a digital/analogue converter with which the manipulated variable is converted. At least one or more timing registers set the timing of the conversion carried out by the D/A converter and at least one or more manipulated variable registers set a manipulated variable that is converted into digital/analogue form at the set timing. In addition, the controller has advancing means to make a target position trajectory advance towards a specified time, a feedforward controller to receive the output of the advancing means and to calculate a feedforward control variable on the basis of a target trajectory, and a feedback controller to produce a feedback output variable on the basis of a target trajectory that is delayed relative to a target position trajectory by a specified time.
摘要翻译：磁盘装置具有用于以指定的采样周期检测磁头的位置的位置信号检测器，控制器操作操纵变量以使用微处理器来控制磁头的位置，以及数字/模拟转换器与被操纵的变量进行转换。至少一个或多个定时寄存器设置由D / A转换器进行的转换的定时，并且至少一个或多个操纵变量寄存器设置在设定的定时被转换成数字/模拟形式的操纵变量。此外，控制器具有使目标位置轨迹朝向指定时间前进的前进装置，用于接收前进装置的输出并基于目标轨迹计算前馈控制变量的前馈控制器，以及反馈控制器以基于相对于目标位置轨迹延迟指定时间的目标轨迹产生反馈输出变量。

3. 发明授权

US5606470A Method and apparatus for controlling magnetoresistive effect element head 失效
标题翻译：用于控制磁阻效应元件头的方法和装置
公开(公告)号：US5606470A
公开(公告)日：1997-02-25
申请号：US397522
申请日：1995-03-02
申请人： Akio Shioya , Yuji Hata
发明人： Akio Shioya , Yuji Hata
IPC分类号： G11B5/00 , G11B5/02 , G11B5/40 , G11B5/55 , G11B5/584 , G11B5/596 , G11B19/04 , G11B5/03 , G11B5/127 , G11B5/58
CPC分类号： G11B5/553 , G11B19/04 , G11B5/40 , G11B5/5508 , G11B5/5547 , G11B5/584 , G11B5/59683 , G11B2005/0018
摘要： When a magnetic recording and reproducing apparatus is in a waiting state, feedback control for positioning the carriage is released, and a supply of a sense current to the magnetoresistive effect element of the MR magnetic head is adjusted so as to prolong the life of the MR magnetic head. When the interface and control circuit recognizes that there is no order from the host computer and that the magnetic recording and reproducing apparatus is in a wait state, the servo control circuit releases the feedback control for positioning the head. A mode, etc. selection control circuit controls the recording/reproduction amplifier so as not to supply a sense current to the magnetoresistive effect element of the MR magnetic head. Accordingly, the time for supplying a sense current to the magnetoresistive effect element of the MR magnetic head is reduced in a great measure and, therefore, it is possible to prevent the deterioration of the element characteristics by electro-migration or the like. The result is that the life of the element can be prolonged. Hence, the output of the MR magnetic head can be increased without sacrificing the reliability. Accordingly, it has become possible to improve the performance of a high-output magnetic recording and reproducing apparatus using an MR magnetic head.
摘要翻译：当磁记录和再现装置处于等待状态时，释放用于定位滑架的反馈控制，并且调整向MR磁头的磁阻效应元件提供感测电流以延长MR的寿命磁头。当接口和控制电路识别出没有来自主机的命令并且磁记录和再现装置处于等待状态时，伺服控制电路释放用于定位磁头的反馈控制。模式等选择控制电路控制记录/再现放大器，以便不向MR磁头的磁阻效应元件提供感测电流。因此，为MR磁头的磁阻效应元件提供感应电流的时间大大降低，因此可以通过电迁移等来防止元件特性的劣化。结果是元素的寿命可以延长。因此，可以增加MR磁头的输出而不牺牲可靠性。因此，可以提高使用MR磁头的高输出磁记录和再现装置的性能。

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