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公开(公告)号：US07808739B2
公开(公告)日：2010-10-05
申请号：US12290267
申请日：2008-10-28
申请人： Kohji Takasaki , Isao Yoneda , Nobuhiko Wasa , Yasuhiro Iihara
发明人： Kohji Takasaki , Isao Yoneda , Nobuhiko Wasa , Yasuhiro Iihara
IPC分类号： G11B21/02
CPC分类号： G11B19/042 , G11B5/5582 , G11B5/596
摘要： Embodiments of the present invention help to perform appropriate servo control in response to detected vibration in a disk drive device having a vibration sensor. In an embodiment of the present invention, an HDD switches a correction servo mode to perform vibration correction in head positioning and a normal servo mode not to perform the vibration correction. The HDD performs servo positioning in either one of the serve modes and determines servo positioning accuracy in the servo mode from the measured positional error signal. The HDD obtains data indicating the servo positioning accuracy in the other servo mode from a table. The HDD compares the accuracy in the two servo modes and selects the servo mode with higher accuracy. The table contains previous measurements on servo positioning accuracy in the servo modes.
摘要翻译： 本发明的实施例有助于响应于具有振动传感器的盘驱动装置中的检测到的振动来执行适当的伺服控制。 在本发明的实施例中，HDD切换校正伺服模式以执行磁头定位中的振动校正和不进行振动校正的正常伺服模式。 HDD以任一种服务模式执行伺服定位，并根据测量的位置误差信号确定伺服模式下的伺服定位精度。 HDD从表中获取表示其他伺服模式中的伺服定位精度的数据。 HDD比较两种伺服模式的精度，并以更高的精度选择伺服模式。 该表包含以前对伺服模式下伺服定位精度的测量。
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公开(公告)号：US20090135516A1
公开(公告)日：2009-05-28
申请号：US12290267
申请日：2008-10-28
申请人： Kohji Takasaki , Isao Yoneda , Nobuhiko Wasa , Yasuhiro Iihara
发明人： Kohji Takasaki , Isao Yoneda , Nobuhiko Wasa , Yasuhiro Iihara
IPC分类号： G11B21/02
CPC分类号： G11B19/042 , G11B5/5582 , G11B5/596
摘要： Embodiments of the present invention help to perform appropriate servo control in response to detected vibration in a disk drive device having a vibration sensor. In an embodiment of the present invention, an HDD switches a correction servo mode to perform vibration correction in head positioning and a normal servo mode not to perform the vibration correction. The HDD performs servo positioning in either one of the serve modes and determines servo positioning accuracy in the servo mode from the measured positional error signal. The HDD obtains data indicating the servo positioning accuracy in the other servo mode from a table. The HDD compares the accuracy in the two servo modes and selects the servo mode with higher accuracy. The table contains previous measurements on servo positioning accuracy in the servo modes.
摘要翻译： 本发明的实施例有助于响应于具有振动传感器的盘驱动装置中的检测到的振动来执行适当的伺服控制。 在本发明的实施例中，HDD切换校正伺服模式以执行磁头定位中的振动校正和不进行振动校正的正常伺服模式。 HDD以任一种服务模式执行伺服定位，并根据测量的位置误差信号确定伺服模式下的伺服定位精度。 HDD从表中获取表示其他伺服模式中的伺服定位精度的数据。 HDD比较两种伺服模式的精度，并以更高的精度选择伺服模式。 该表包含以前对伺服模式下伺服定位精度的测量。
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公开(公告)号：US20060012906A1
公开(公告)日：2006-01-19
申请号：US11179205
申请日：2005-07-11
IPC分类号： G11B5/09
CPC分类号： G11B20/1833 , G11B20/18 , G11B20/1816
摘要： Embodiments of the present invention provide an inspection method for detecting a physical defect of a magnetic disk with high sensitivity without increasing the length of inspection time. In a magnetic disk drive according to one embodiment, the assembling of which has been completed, by reading inspection data written to a magnetic disk, a defect of the magnetic disk is detected in a state in which a read error occurs. Redundant bits of an ECC are added to the inspection data. If a head corresponding to a recording surface to be inspected has superior read performance, an ECC 2 is applied. If the head in question has inferior read performance, an ECC 4 is applied. Accordingly, as compared with a case where a single ECC is applied, the defect detectivity is further improved without increasing the length of inspection time.
摘要翻译： 本发明的实施例提供一种用于在不增加检查时间的情况下高灵敏度地检测磁盘的物理缺陷的检查方法。 在根据一个实施例的磁盘驱动器中，通过读取写入磁盘的检查数据，组装已经完成，在发生读取错误的状态下检测到磁盘的缺陷。 将ECC的冗余位添加到检查数据。 如果与要检查的记录表面相对应的磁头具有优异的读取性能，则应用ECC 2。 如果所涉及的头部具有较差的读取性能，则应用ECC 4。 因此，与应用单个ECC的情况相比，在不增加检查时间的长度的情况下，进一步提高缺陷检测性。
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公开(公告)号：US08593752B2
公开(公告)日：2013-11-26
申请号：US12901227
申请日：2010-10-08
IPC分类号： G11B19/04
CPC分类号： G11B19/047 , G11B19/2081 , G11B21/12
摘要： A HDD including write components configured to operate within an operating voltage range, charging circuitry comprising a charging capacitor. The charging capacitor includes a higher voltage when charged than the operating voltage range. The HDD also includes pulse circuitry configured to pulse power from the charging circuitry to the write components within the operating voltage range during a controlled shut down of the write components such that remaining data-sector bits are written during the controlled shut down.
摘要翻译： 包括构造成在工作电压范围内操作的写入组件的HDD，包括充电电容器的充电电路。 充电电容器在充电时包括比工作电压范围更高的电压。 HDD还包括脉冲电路，其被配置为在写入组件的受控关闭期间将来自充电电路的功率脉冲到工作电压范围内的写入组件，使得在受控关闭期间写入剩余的数据扇区位。
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公开(公告)号：US20060139790A1
公开(公告)日：2006-06-29
申请号：US11317193
申请日：2005-12-22
申请人： Kaoru Iseri , Atsushi Tobari , Yasuhiro Iihara , Masanori Aratani
发明人： Kaoru Iseri , Atsushi Tobari , Yasuhiro Iihara , Masanori Aratani
CPC分类号： G11B19/04 , G11B5/5582 , G11B33/08
摘要： Embodiments of the invention avoid an off-track write when an impact is applied. A hard disk drive according to one embodiment of the present invention comprises a magnetic disk; an actuator for moving a head element section over the magnetic disk; and an HDC/MPU for prohibiting the head element section from writing onto the magnetic disk for a short period when a detected impact is found to be greater than a low reference level and not greater than a high reference level, and prohibiting the head element section from writing onto the magnetic disk for a period longer than the short period when the detected impact is found to be greater than the high reference level.
摘要翻译： 当施加冲击时，本发明的实施例避免了偏离写入。 根据本发明的一个实施例的硬盘驱动器包括磁盘; 用于使磁头元件部分移动到磁盘上的致动器; 以及HDC / MPU，用于当发现检测到的冲击大于低基准电平并且不高于高基准电平时，禁止头元件部在短时间内写入磁盘，并且禁止头元件部分 当检测到的冲击被发现大于高参考水平时，从写入磁盘的时间长于短时间段。
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公开(公告)号：US07417816B2
公开(公告)日：2008-08-26
申请号：US11179205
申请日：2005-07-11
IPC分类号： G11B5/09
CPC分类号： G11B20/1833 , G11B20/18 , G11B20/1816
摘要： Embodiments of the present invention provide an inspection method for detecting a physical defect of a magnetic disk with high sensitivity without increasing the length of inspection time. In a magnetic disk drive according to one embodiment, the assembling of which has been completed, by reading inspection data written to a magnetic disk, a defect of the magnetic disk is detected in a state in which a read error occurs. Redundant bits of an ECC are added to the inspection data. If a head corresponding to a recording surface to be inspected has superior read performance, an ECC 2 is applied. If the head in question has inferior read performance, an ECC 4 is applied. Accordingly, as compared with a case where a single ECC is applied, the defect detectivity is further improved without increasing the length of inspection time.
摘要翻译： 本发明的实施例提供一种用于在不增加检查时间的情况下高灵敏度地检测磁盘的物理缺陷的检查方法。 在根据一个实施例的磁盘驱动器中，通过读取写入磁盘的检查数据，组装已经完成，在发生读取错误的状态下检测到磁盘的缺陷。 将ECC的冗余位添加到检查数据。 如果与要检查的记录表面相对应的磁头具有优异的读取性能，则应用ECC 2。 如果所涉及的头部具有较差的读取性能，则应用ECC 4。 因此，与应用单个ECC的情况相比，在不增加检查时间的长度的情况下，进一步提高缺陷检测性。
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公开(公告)号：US07333282B2
公开(公告)日：2008-02-19
申请号：US11317193
申请日：2005-12-22
申请人： Kaoru Iseri , Atsushi Tobari , Yasuhiro Iihara , Masanori Aratani
发明人： Kaoru Iseri , Atsushi Tobari , Yasuhiro Iihara , Masanori Aratani
CPC分类号： G11B19/04 , G11B5/5582 , G11B33/08
摘要： Embodiments of the invention avoid an off-track write when an impact is applied. A hard disk drive according to one embodiment of the present invention comprises a magnetic disk; an actuator for moving a head element section over the magnetic disk; and an HDC/MPU for prohibiting the head element section from writing onto the magnetic disk for a short period when a detected impact is found to be greater than a low reference level and not greater than a high reference level, and prohibiting the head element section from writing onto the magnetic disk for a period longer than the short period when the detected impact is found to be greater than the high reference level.
摘要翻译： 当施加冲击时，本发明的实施例避免了偏离写入。 根据本发明的一个实施例的硬盘驱动器包括磁盘; 用于使磁头元件部分移动到磁盘上的致动器; 以及HDC / MPU，用于当发现检测到的冲击大于低基准电平并且不高于高基准电平时，禁止头元件部在短时间内写入磁盘，并且禁止头元件部分 当检测到的冲击被发现大于高参考水平时，从写入磁盘的时间长于短时间段。
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公开(公告)号：US5918001A
公开(公告)日：1999-06-29
申请号：US802019
申请日：1997-02-18
申请人： Shinji Ueno , Yasuhiro Iihara , Haruo Andoh , Takashi Nakamura
发明人： Shinji Ueno , Yasuhiro Iihara , Haruo Andoh , Takashi Nakamura
CPC分类号： G11B20/1883 , G11B20/1833 , G11B2020/183 , G11B2220/20
摘要： A disk drive has an error recovery procedure with a plurality of ERP steps. An unused capacity of an alternate area on a disk for reassigning data is determined. While executing the error recovery procedure, an execution condition for reassigning data is changed based unused capacity of the alternate area. Data is reassigned to the alternate area in response to the execution condition. This prevents the early loss of the alternate area.
摘要翻译： 磁盘驱动器具有多个ERP步骤的错误恢复过程。 确定用于重新分配数据的磁盘上备用区域的未使用容量。 在执行错误恢复过程时，重新分配数据的执行条件基于备用区域的未使用容量而改变。 响应于执行条件，将数据重新分配给备用区域。 这样可以防止交替区域的早期损失。
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