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1. 发明申请

US20070247744A1 Disk drive and control method thereof 有权
标题翻译：磁盘驱动器及其控制方法
公开(公告)号：US20070247744A1
公开(公告)日：2007-10-25
申请号：US11789626
申请日：2007-04-24
申请人： Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Nobumasa Nishiyama
发明人： Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Nobumasa Nishiyama
IPC分类号： G11B21/02
CPC分类号： G11B5/6064 , G11B5/6005
摘要： Embodiments in accordance with the present invention reduce the structural stress applied to a head, and to achieve the effective control, when the clearance between the head and a disk is adjusted by using a heater. According to one embodiment, the hard disk controller/microprocessing unit (HDC/MPU) controls a slew rate of a heater at the time of TFC (Thermal Fly height Control). In response to processing conditions, a HDC/MPU changes a slew rate of the output of electric current/voltage applied to the heater. This makes it possible to reduce the head stress, and to achieve the effective TFC. To be more specific, with reference to a temperature/slew rate table, the HDC/MPU changes a slew rate in response to the temperature in the read/write processing.
摘要翻译：根据本发明的实施例，通过使用加热器调节头部和盘片之间的间隙时，降低施加在头部上的结构应力，并实现有效的控制。根据一个实施例，硬盘控制器/微处理单元（HDC / MPU）在TFC（热飞行高度控制）时控制加热器的转换速率。响应于处理条件，HDC / MPU改变加到加热器上的电流/电压输出的转换速率。这使得可以减小头部应力，并实现有效的TFC。更具体地，参考温度/转换速率表，HDC / MPU根据读/写处理中的温度改变转换速率。

2. 发明授权

US07969681B2 Disk drive and control method thereof 有权
标题翻译：磁盘驱动器及其控制方法
公开(公告)号：US07969681B2
公开(公告)日：2011-06-28
申请号：US11789626
申请日：2007-04-24
申请人： Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Nobumasa Nishiyama
发明人： Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Nobumasa Nishiyama
IPC分类号： G11B21/02
CPC分类号： G11B5/6064 , G11B5/6005
摘要： Embodiments in accordance with the present invention reduce the structural stress applied to a head, and to achieve the effective control, when the clearance between the head and a disk is adjusted by using a heater. According to one embodiment, the hard disk controller/microprocessing unit (HDC/MPU) controls a slew rate of a heater at the time of TFC (Thermal Fly height Control). In response to processing conditions, a HDC/MPU changes a slew rate of the output of electric current/voltage applied to the heater. This makes it possible to reduce the head stress, and to achieve the effective TFC. To be more specific, with reference to a temperature/slew rate table, the HDC/MPU changes a slew rate in response to the temperature in the read/write processing.
摘要翻译：根据本发明的实施例，通过使用加热器调节头部和盘片之间的间隙时，降低施加在头部上的结构应力，并实现有效的控制。根据一个实施例，硬盘控制器/微处理单元（HDC / MPU）在TFC（热飞行高度控制）时控制加热器的转换速率。响应于处理条件，HDC / MPU改变加到加热器上的电流/电压输出的转换速率。这使得可以减小头部应力，并实现有效的TFC。更具体地，参考温度/转换速率表，HDC / MPU根据读/写处理中的温度改变转换速率。

3. 发明授权

US07864474B2 Disk drive and control method thereof 有权
标题翻译：磁盘驱动器及其控制方法
公开(公告)号：US07864474B2
公开(公告)日：2011-01-04
申请号：US11789866
申请日：2007-04-25
申请人： Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Kouji Miyake , Yoshiaki Uji , Masayuki Kurita
发明人： Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Kouji Miyake , Yoshiaki Uji , Masayuki Kurita
IPC分类号： G11B5/02
CPC分类号： G11B5/3133 , G11B5/6064 , G11B5/607 , G11B19/04
摘要： Embodiments in accordance with the present invention reduce the number of errors caused by the aged deterioration of a heater for adjusting the clearance between a head and a disk. According to one embodiment, a thermal fly height control (TFC) controller executes the measurement of a resistance value of a heater in a predetermined timing. The TFC controller judges whether or not the measured resistance value falls within a predetermined reference range. If the measured resistance value falls within the reference range, the processing ends without performing any other processing. If the measured resistance value goes out of the reference range, the TFC controller executes error handling processing in response to a resistance failure. As one of the error handling processing, the TFC controller notifies the host that the abnormality (resistance failure) has been detected in the resistance value of the TFC heater.
摘要翻译：根据本发明的实施例减少了用于调节头部和盘之间的间隙的加热器的老化劣化引起的误差的数量。根据一个实施例，热飞跃高度控制（TFC）控制器在预定定时执行加热器的电阻值的测量。 TFC控制器判断所测量的电阻值是否在预定的参考范围内。如果测量的电阻值落在参考范围内，则处理结束而不执行任何其它处理。如果测量的电阻值超出参考范围，则TFC控制器响应于电阻故障执行错误处理处理。作为错误处理处理之一，TFC控制器通知主机在TFC加热器的电阻值中检测到异常（电阻故障）。

4. 发明申请

US20080247079A1 Disk drive and control method thereof 有权
标题翻译：磁盘驱动器及其控制方法
公开(公告)号：US20080247079A1
公开(公告)日：2008-10-09
申请号：US11789866
申请日：2007-04-25
申请人： Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Kouji Miyake , Yoshiaki Uji , Masayuki Kurita
发明人： Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Kouji Miyake , Yoshiaki Uji , Masayuki Kurita
IPC分类号： G11B21/02
CPC分类号： G11B5/3133 , G11B5/6064 , G11B5/607 , G11B19/04
摘要： Embodiments in accordance with the present invention reduce the number of errors caused by the aged deterioration of a heater for adjusting the clearance between a head and a disk. According to one embodiment, a thermal fly height control (TFC) controller executes the measurement of a resistance value of a heater in a predetermined timing. The TFC controller judges whether or not the measured resistance value falls within a predetermined reference range. If the measured resistance value falls within the reference range, the processing ends without performing any other processing. If the measured resistance value goes out of the reference range, the TFC controller executes error handling processing in response to a resistance failure. As one of the error handling processing, the TFC controller notifies the host that the abnormality (resistance failure) has been detected in the resistance value of the TFC heater.
摘要翻译：根据本发明的实施例减少了用于调节头部和盘之间的间隙的加热器的老化劣化引起的误差的数量。根据一个实施例，热飞跃高度控制（TFC）控制器在预定定时执行加热器的电阻值的测量。 TFC控制器判断所测量的电阻值是否在预定的参考范围内。如果测量的电阻值落在参考范围内，则处理结束而不执行任何其它处理。如果测量的电阻值超出参考范围，则TFC控制器响应于电阻故障执行错误处理处理。作为错误处理处理之一，TFC控制器通知主机在TFC加热器的电阻值中检测到异常（电阻故障）。

5. 发明授权

US07385777B2 Data storage device with heater, and control method therefor with timing control 失效
标题翻译：带加热器的数据存储装置及其具有定时控制的控制方法
公开(公告)号：US07385777B2
公开(公告)日：2008-06-10
申请号：US11514871
申请日：2006-09-01
申请人： Noriaki Satoh , Toyomi Ohsawa , Masaharu Kawamura , Hideki Ohzeki , Kazunari Tsuchimoto
发明人： Noriaki Satoh , Toyomi Ohsawa , Masaharu Kawamura , Hideki Ohzeki , Kazunari Tsuchimoto
IPC分类号： G11B21/02 , G11B5/596
CPC分类号： G11B5/3136 , G11B5/5547 , G11B5/6005 , G11B5/6064 , G11B5/607
摘要： Embodiments of the invention reduce a possibility that a head will collide with a medium when the clearance between the head and the medium is adjusted by using a medium, and sufficiently reduce the clearance even at an initial stage of accessing a data area. In one embodiment, a hard disk drive (HDD) keeps a heater in an OFF state for a period of time from the start of seek operation until the specified timing after a following mode starts. This prevents a head element from colliding with a magnetic disk, and also prevents flying properties from changing due to the deformation of the ABS. In the above specified timing, the heater is switched from OFF to ON. Specifically, for example, on completion of seek operation, in the timing in which a head arrives at a target track, or in the timing in which an HDC/MPU enters the following mode, the heater is turned ON.
摘要翻译：本发明的实施例减少了当通过使用介质来调整头部和介质之间的间隙时头部将与介质碰撞的可能性，并且即使在访问数据区域的初始阶段也足够地减小间隙。在一个实施例中，硬盘驱动器（HDD）将加热器保持在关闭状态，持续一段时间，从搜索操作开始直到在后续模式开始之后的指定定时。这样可防止头元件与磁盘碰撞，并且还防止由于ABS的变形引起的飞行性能的变化。在上述指定的时间，加热器从OFF切换到ON。具体地，例如，在寻道操作完成时，在头到达目标轨道的时刻，或者在HDC / MPU进入后续模式的定时中，加热器被接通。

6. 发明授权

US07369349B2 Data storage device with heater, and control method therefor involving different control modes 失效
标题翻译：具有加热器的数据存储装置及其控制方法涉及不同的控制模式
公开(公告)号：US07369349B2
公开(公告)日：2008-05-06
申请号：US11514813
申请日：2006-09-01
申请人： Noriaki Satoh , Masaharu Kawamura , Toyomi Ohsawa , Hideki Ohzeki , Kazunari Tsuchimoto
发明人： Noriaki Satoh , Masaharu Kawamura , Toyomi Ohsawa , Hideki Ohzeki , Kazunari Tsuchimoto
IPC分类号： G11B21/02 , G11B5/596
CPC分类号： G11B5/3136 , G11B5/6005 , G11B5/6029 , G11B5/6064
摘要： Embodiments of the invention reduce a possibility that a head will collide with a medium when the clearance between the head and the medium is adjusted by using a medium, and sufficiently reduce the clearance even at an initial stage of accessing a data area. In one embodiment, a hard disk drive (HDD) switches a heater from OFF to ON in the specified timing after a seek mode is switched to a following mode. Specifically, for example, on the completion of seek operation, in the timing in which a head arrives at a target track, or in the timing in which an HDC/MPU enters the following mode, the heater is turned ON, and this state is kept unchanged until access to the target sector is made.
摘要翻译：本发明的实施例减少了当通过使用介质来调整头部和介质之间的间隙时头部将与介质碰撞的可能性，并且即使在访问数据区域的初始阶段也足够地减小间隙。在一个实施例中，在寻找模式切换到后续模式之后，硬盘驱动器（HDD）在指定的定时将加热器从OFF切换到ON。具体地，例如，在寻道操作完成时，在头到达目标轨道的时刻，或者在HDC / MPU进入后续模式的时刻，加热器接通，该状态为保持不变，直到进入目标部门。

7. 发明申请

US20070053103A1 Data storage device with heater, and control method therefor involving different control modes 失效
标题翻译：具有加热器的数据存储装置及其控制方法涉及不同的控制模式
公开(公告)号：US20070053103A1
公开(公告)日：2007-03-08
申请号：US11514813
申请日：2006-09-01
申请人： Noriaki Satoh , Masaharu Kawamura , Toyomi Ohsawa , Hideki Ohzeki , Kazunari Tsuchimoto
发明人： Noriaki Satoh , Masaharu Kawamura , Toyomi Ohsawa , Hideki Ohzeki , Kazunari Tsuchimoto
IPC分类号： G11B5/00
CPC分类号： G11B5/3136 , G11B5/6005 , G11B5/6029 , G11B5/6064
摘要： Embodiments of the invention reduce a possibility that a head will collide with a medium when the clearance between the head and the medium is adjusted by using a medium, and sufficiently reduce the clearance even at an initial stage of accessing a data area. In one embodiment, a hard disk drive (HDD) switches a heater from OFF to ON in the specified timing after a seek mode is switched to a following mode. Specifically, for example, on the completion of seek operation, in the timing in which a head arrives at a target track, or in the timing in which an HDC/MPU enters the following mode, the heater is turned ON, and this state is kept unchanged until access to the target sector is made.
摘要翻译：本发明的实施例减少了当通过使用介质来调整头部和介质之间的间隙时头部将与介质碰撞的可能性，并且即使在访问数据区域的初始阶段也足够地减小间隙。在一个实施例中，在寻找模式切换到后续模式之后，硬盘驱动器（HDD）在指定的定时将加热器从OFF切换到ON。具体地，例如，在寻道操作完成时，在头到达目标轨道的时刻，或者在HDC / MPU进入后续模式的时刻，加热器接通，该状态为保持不变，直到进入目标部门。

8. 发明申请

US20080212226A1 Disk drive device, altitude determination method therefore and method for determining characteristic of head element portion 有权
标题翻译：因此，磁盘驱动装置，高度确定方法以及用于确定磁头元件部分特性的方法
公开(公告)号：US20080212226A1
公开(公告)日：2008-09-04
申请号：US12012340
申请日：2008-01-31
申请人： Yoshiaki Uji , Minoru Shimada , Ryoh Miura , Takahiro Watanabe , Toyomi Ohsawa , Noriaki Satoh
发明人： Yoshiaki Uji , Minoru Shimada , Ryoh Miura , Takahiro Watanabe , Toyomi Ohsawa , Noriaki Satoh
IPC分类号： G11B5/54
CPC分类号： G11B5/6029 , G11B5/3133 , G11B5/607
摘要： Embodiments of the present invention allow for a precise altitude to be calculated from read-out signals of a head slider. In one embodiment, a hard disk controller/multiprocessing unit (HDC/MPU) determines a head element portion in which the instability has occurred in accordance with the resolution change. The HDC/MPU adjusts the clearance accordingly. The head element portion reads signals of different frequencies under a condition of the signal strengths coinciding with a reference value, and the HDC/MPU calculates the resolution. The HDC/MPU determines that the instability has occurred if the difference is outside the criterion. The HDC/MPU uses the read-out signal of a head slider in which the instability has not occurred to calculate the altitude.
摘要翻译：本发明的实施例允许根据磁头滑块的读出信号计算精确的高度。在一个实施例中，硬盘控制器/多处理单元（HDC / MPU）根据分辨率变化确定其中发生不稳定性的头元件部分。 HDC / MPU相应地调整间隙。头元件部分在信号强度与参考值一致的条件下读取不同频率的信号，并且HDC / MPU计算分辨率。如果差异超出标准，则HDC / MPU确定发生不稳定。 HDC / MPU使用未出现不稳定性的磁头滑块的读出信号来计算高度。

9. 发明申请

US20070053104A1 Data storage device with heater, and control method therefor with timing control 失效
标题翻译：带加热器的数据存储装置及其具有定时控制的控制方法
公开(公告)号：US20070053104A1
公开(公告)日：2007-03-08
申请号：US11514871
申请日：2006-09-01
申请人： Noriaki Satoh , Toyomi Ohsawa , Masaharu Kawamura , Hideki Ohzeki , Kazunari Tsuchimoto
发明人： Noriaki Satoh , Toyomi Ohsawa , Masaharu Kawamura , Hideki Ohzeki , Kazunari Tsuchimoto
IPC分类号： G11B5/00
CPC分类号： G11B5/3136 , G11B5/5547 , G11B5/6005 , G11B5/6064 , G11B5/607
摘要： Embodiments of the invention reduce a possibility that a head will collide with a medium when the clearance between the head and the medium is adjusted by using a medium, and sufficiently reduce the clearance even at an initial stage of accessing a data area. In one embodiment, a hard disk drive (HDD) keeps a heater in an OFF state for a period of time from the start of seek operation until the specified timing after a following mode starts. This prevents a head element from colliding with a magnetic disk, and also prevents flying properties from changing due to the deformation of the ABS. In the above specified timing, the heater is switched from OFF to ON. Specifically, for example, on completion of seek operation, in the timing in which a head arrives at a target track, or in the timing in which an HDC/MPU enters the following mode, the heater is turned ON.
摘要翻译：本发明的实施例减少了当通过使用介质来调整头部和介质之间的间隙时头部将与介质碰撞的可能性，并且即使在访问数据区域的初始阶段也足够地减小间隙。在一个实施例中，硬盘驱动器（HDD）将加热器保持在关闭状态，持续一段时间，从搜索操作开始直到在后续模式开始之后的指定定时。这样可防止头元件与磁盘碰撞，并且还防止由于ABS的变形引起的飞行性能的变化。在上述指定的时间，加热器从OFF切换到ON。具体地，例如，在寻道操作完成时，在头到达目标轨道的时刻，或者在HDC / MPU进入后续模式的定时中，加热器被接通。

10. 发明授权

US07852583B2 Disk drive device, altitude determination method therefore and method for determining characteristic of head element portion 有权
标题翻译：因此，磁盘驱动装置，高度确定方法以及用于确定磁头元件部分特性的方法
公开(公告)号：US07852583B2
公开(公告)日：2010-12-14
申请号：US12012340
申请日：2008-01-31
申请人： Yoshiaki Uji , Minoru Shimada , Ryoh Miura , Takahiro Watanabe , Toyomi Ohsawa , Noriaki Satoh
发明人： Yoshiaki Uji , Minoru Shimada , Ryoh Miura , Takahiro Watanabe , Toyomi Ohsawa , Noriaki Satoh
IPC分类号： G11B27/36
CPC分类号： G11B5/6029 , G11B5/3133 , G11B5/607
摘要： Embodiments of the present invention allow for a precise altitude to be calculated from read-out signals of a head slider. In one embodiment, a hard disk controller/multiprocessing unit (HDC/MPU) determines a head element portion in which the instability has occurred in accordance with the resolution change. The HDC/MPU adjusts the clearance accordingly. The head element portion reads signals of different frequencies under a condition of the signal strengths coinciding with a reference value, and the HDC/MPU calculates the resolution. The HDC/MPU determines that the instability has occurred if the difference is outside the criterion. The HDC/MPU uses the read-out signal of a head slider in which the instability has not occurred to calculate the altitude.
摘要翻译：本发明的实施例允许根据磁头滑块的读出信号计算精确的高度。在一个实施例中，硬盘控制器/多处理单元（HDC / MPU）根据分辨率变化确定其中发生不稳定性的头元件部分。 HDC / MPU相应地调整间隙。头元件部分在信号强度与参考值一致的条件下读取不同频率的信号，并且HDC / MPU计算分辨率。如果差异超出标准，则HDC / MPU确定发生不稳定。 HDC / MPU使用未出现不稳定性的磁头滑块的读出信号来计算高度。

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