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1. 发明授权

US07894149B2 Disc drive device 有权
标题翻译：光盘驱动器
公开(公告)号：US07894149B2
公开(公告)日：2011-02-22
申请号：US12322026
申请日：2009-01-27
申请人： Hiroyasu Masuda , Yoshihiko Maeda , Kenichi Kuramoto , Masayuki Kurita , Kenji Kuroki
发明人： Hiroyasu Masuda , Yoshihiko Maeda , Kenichi Kuramoto , Masayuki Kurita , Kenji Kuroki
IPC分类号： G11B27/36 , G11B20/10 , G11B21/02
CPC分类号： G11B19/046 , G11B5/40 , G11B5/581 , G11B5/6029 , G11B5/6064 , G11B33/1406
摘要： Embodiments of the present invention precisely measure clearance variation by temperature change using a value in a RW channel. In an embodiment of the present invention, an HDD measures resolution by signals in a RW channel. The measured resolution shows variations depending on temperature according to two factors. One factor is the clearance variation depending on the temperature and the other is the variation in operational property of the RW channel depending on the temperature. The HDD compensates for the temperature variation of the resolution according to the two factors. The HDD uses two kinds of sensed temperature. One corresponds to the temperature inside an enclosure in which head sliders are provided and the other corresponds to the temperature of the chip in which the RW channel is implemented. Sensing the drive temperature and the channel temperature independently achieves precise compensation for the variation in the measured resolution caused by clearance variation and channel property.
摘要翻译：本发明的实施例使用RW通道中的值精确地测量通过温度变化的间隙变化。在本发明的实施例中，HDD通过RW信道中的信号来测量分辨率。测量的分辨率根据两个因素显示出根据温度的变化。一个因素是取决于温度的间隙变化，另一个因素是RW通道的操作性能随温度的变化。 HDD根据两个因素补偿分辨率的温度变化。 HDD使用两种感测温度。一个对应于其中提供磁头滑块的外壳内的温度，另一个对应于实现RW通道的芯片的温度。感测驱动温度和通道温度独立地对由间隙变化和通道特性引起的测量分辨率的变化进行精确补偿。

2. 发明申请

US20090201598A1 Disc drive device 有权
标题翻译：光盘驱动器
公开(公告)号：US20090201598A1
公开(公告)日：2009-08-13
申请号：US12322026
申请日：2009-01-27
申请人： Hiroyasu Masuda , Yoshihiko Maeda , Kenichi Kuramoto , Masayuki Kurita , Kenji Kuroki
发明人： Hiroyasu Masuda , Yoshihiko Maeda , Kenichi Kuramoto , Masayuki Kurita , Kenji Kuroki
IPC分类号： G11B27/36 , G11B21/02
CPC分类号： G11B19/046 , G11B5/40 , G11B5/581 , G11B5/6029 , G11B5/6064 , G11B33/1406
摘要： Embodiments of the present invention precisely measure clearance variation by temperature change using a value in a RW channel. In an embodiment of the present invention, an HDD measures resolution by signals in a RW channel. The measured resolution shows variations depending on temperature according to two factors. One factor is the clearance variation depending on the temperature and the other is the variation in operational property of the RW channel depending on the temperature. The HDD compensates for the temperature variation of the resolution according to the two factors. The HDD uses two kinds of sensed temperature. One corresponds to the temperature inside an enclosure in which head sliders are provided and the other corresponds to the temperature of the chip in which the RW channel is implemented. Sensing the drive temperature and the channel temperature independently achieves precise compensation for the variation in the measured resolution caused by clearance variation and channel property.
摘要翻译：本发明的实施例使用RW通道中的值精确地测量通过温度变化的间隙变化。在本发明的实施例中，HDD通过RW信道中的信号来测量分辨率。测量的分辨率根据两个因素显示出根据温度的变化。一个因素是取决于温度的间隙变化，另一个因素是RW通道的操作性能随温度的变化。 HDD根据两个因素补偿分辨率的温度变化。 HDD使用两种感测温度。一个对应于其中提供磁头滑块的外壳内的温度，另一个对应于实现RW通道的芯片的温度。感测驱动温度和通道温度独立地对由间隙变化和通道特性引起的测量分辨率的变化进行精确补偿。

3. 发明申请

US20110102933A1 DISK DRIVE AND METHOD FOR MEASURING CLEARANCE CHANGE IN THE DISK DRIVE 有权
标题翻译：磁盘驱动器和用于测量磁盘驱动器中的间隙变化的方法
公开(公告)号：US20110102933A1
公开(公告)日：2011-05-05
申请号：US12558435
申请日：2009-09-11
申请人： Masayuki Kurita , Kenji Kuroki , Kenichi Kuramoto , Yoshihiko Maeda
发明人： Masayuki Kurita , Kenji Kuroki , Kenichi Kuramoto , Yoshihiko Maeda
IPC分类号： G11B27/36 , G11B21/02
CPC分类号： G11B5/6029 , G11B5/6064
摘要： A method for measuring a change of a clearance between a head and a disk. The method includes reading a preliminarily written data string for clearance measurement on a disk to obtain a first measured value corresponding to a clearance, and writing a new data string for deterioration check onto the disk and reading the data string for deterioration check to obtain a second measured value corresponding to the clearance. The method also includes determining a deterioration of the data string for clearance measurement from a difference between the first measured value and the second measured value, measuring a clearance change using the data string for clearance measurement by a normal operation if the determination is that the data string for clearance measurement has not deteriorated, and measuring a clearance change by an operation different operation if the determination is that the data string for clearance measurement has deteriorated.
摘要翻译：一种用于测量磁头和磁盘之间的间隙变化的方法。该方法包括在盘上读取用于间隙测量的预先写入的数据串，以获得与间隙相对应的第一测量值，并将用于劣化检查的新数据串写入盘并读取用于劣化检查的数据串，以获得第二测量值对应于间隙。该方法还包括从第一测量值和第二测量值之间的差异确定用于间隙测量的数据串的劣化，如果确定数据是通过正常操作，则使用用于间隙测量的数据串来测量间隙变化用于间隙测量的琴弦没有劣化，并且如果确定用于间隙测量的数据串已经劣化，则通过操作不同的操作来测量间隙变化。

4. 发明授权

US08300337B2 Disk drive and method for measuring clearance change in the disk drive 有权
标题翻译：用于测量磁盘驱动器中的间隙变化的磁盘驱动器和方法
公开(公告)号：US08300337B2
公开(公告)日：2012-10-30
申请号：US12558435
申请日：2009-09-11
申请人： Masayuki Kurita , Kenji Kuroki , Kenichi Kuramoto , Yoshihiko Maeda
发明人： Masayuki Kurita , Kenji Kuroki , Kenichi Kuramoto , Yoshihiko Maeda
IPC分类号： G11B27/36 , G11B21/02
CPC分类号： G11B5/6029 , G11B5/6064
摘要： A method for measuring change of clearance between a head and a disk. The method includes reading a preliminarily written data string for clearance measurement on a disk to obtain a first measured value corresponding to a clearance, and writing a new data string for deterioration check onto the disk and reading the data string for deterioration check to obtain a second measured value corresponding to the clearance. The method also includes determining a deterioration of the data string for clearance measurement from a difference between the first measured value and the second measured value, measuring a clearance change using the data string for clearance measurement by a normal operation if the determination is that the data string for clearance measurement has not deteriorated, and measuring a clearance change by an operation different from the normal operation if the determination is that the data string for clearance measurement has deteriorated.
摘要翻译：一种用于测量磁头和磁盘之间的间隙变化的方法。该方法包括在盘上读取用于间隙测量的预先写入的数据串，以获得与间隙相对应的第一测量值，并将用于劣化检查的新数据串写入盘并读取用于劣化检查的数据串，以获得第二测量值对应于间隙。该方法还包括从第一测量值和第二测量值之间的差异确定用于间隙测量的数据串的劣化，如果确定数据是通过正常操作，则使用用于间隙测量的数据串来测量间隙变化用于间隙测量的琴弦没有劣化，并且如果确定用于间隙测量的数据串已经劣化，则通过与正常操作不同的操作来测量间隙变化。

5. 发明申请

US20090141391A1 Disk drive device and clearance control method thereof 审中-公开
标题翻译：磁盘驱动装置及其间隙控制方法
公开(公告)号：US20090141391A1
公开(公告)日：2009-06-04
申请号：US12290533
申请日：2008-10-30
申请人： Kenichi Kuramoto , Masayuki Kurita , Yoshihiko Maeda , Hidetsugu Tanaka , Akihiro Sera , Katsumasa Yamazaki
发明人： Kenichi Kuramoto , Masayuki Kurita , Yoshihiko Maeda , Hidetsugu Tanaka , Akihiro Sera , Katsumasa Yamazaki
IPC分类号： G11B21/02
CPC分类号： G11B5/581 , G11B5/583
摘要： Embodiments of the present invention help to precisely control the clearance between a head and disk for the pressure without using a barometric sensor. In an embodiment of the present invention, an HDD determines a clearance from variations in operational parameters, and further determines a variation in pressure by deducting the clearance variation caused by a variation in temperature from the clearance. When the HDD controls the clearance in accordance with the pressure change, the HDD checks for head-disk contact. The accuracy and reliability in pressure measurement (clearance measurement) using operational parameters are not high. Therefore, confirming the pressure measurement by the presence or absence of head-disk contact eliminates head-disk contact in the following read/write operation to attain a securer margin for the clearance.
摘要翻译：本发明的实施例有助于在不使用气压传感器的情况下精确地控制压头与盘之间的压力间隙。在本发明的一个实施例中，HDD确定与操作参数变化之间的间隙，并且通过减去由间隙的温度变化引起的间隙变化来进一步确定压力变化。当HDD根据压力变化控制间隙时，HDD检查头盘接触。使用操作参数的压力测量（间隙测量）的精度和可靠性不高。因此，通过头盘接触的存在或不存在来确认压力测量可以在随后的读/写操作中消除头盘接触，以获得间隙的安全裕度。

6. 发明授权

US08259406B2 Head/disk contact determination 有权
标题翻译：头/磁盘接触确定
公开(公告)号：US08259406B2
公开(公告)日：2012-09-04
申请号：US12964543
申请日：2010-12-09
申请人： Michiya Kazusawa , Masayuki Kurita , Kenji Kuroki , Yoshihiko Maeda
发明人： Michiya Kazusawa , Masayuki Kurita , Kenji Kuroki , Yoshihiko Maeda
IPC分类号： G11B5/09
CPC分类号： G11B5/59616 , G11B5/3136 , G11B5/40 , G11B5/6064
摘要： A disk drive including a sensor element that senses contact between a head slider and a disk, a head integrated circuit (IC) comprising an amplification circuit section that amplifies a signal of the head slider, a controller IC comprising a controller that accesses a register of the head IC for controlling the head IC, and an identification section, within the head IC, that determines a contact frequency of the contact by the sensor element by using a timing control signal of the controller IC.
摘要翻译：一种磁盘驱动器，包括感测磁头滑动器和磁盘盘之间的接触的传感器元件，包括放大电路部分的头部集成电路（IC），其放大磁头滑动器的信号;控制器IC，包括：控制器，用于控制头IC的头IC，以及头IC内的识别部，其通过使用控制器IC的定时控制信号确定传感器元件的接触的接触频率。

7. 发明申请

US20110141603A1 HEAD/DISK CONTACT DETERMINATION 有权
标题翻译：头/盘联系确定
公开(公告)号：US20110141603A1
公开(公告)日：2011-06-16
申请号：US12964543
申请日：2010-12-09
申请人： Michiya KAZUSAWA , Masayuki Kurita , Kenji Kuroki , Yoshihiko Maeda
发明人： Michiya KAZUSAWA , Masayuki Kurita , Kenji Kuroki , Yoshihiko Maeda
IPC分类号： G11B5/09
CPC分类号： G11B5/59616 , G11B5/3136 , G11B5/40 , G11B5/6064
摘要： A disk drive including a sensor element that senses contact between a head slider and a disk, a head integrated circuit (IC) comprising an amplification circuit section that amplifies a signal of the head slider, a controller IC comprising a controller that accesses a register of the head IC for controlling the head IC, and an identification section, within the head IC, that determines a contact frequency of the contact by the sensor element by using a timing control signal of the controller IC.
摘要翻译：一种磁盘驱动器，包括感测磁头滑动器和磁盘盘之间的接触的传感器元件，包括放大电路部分的头部集成电路（IC），其放大磁头滑动器的信号;控制器IC，包括：控制器，用于控制头IC的头IC，以及头IC内的识别部，其通过使用控制器IC的定时控制信号确定传感器元件的接触的接触频率。

8. 发明授权

US08125728B2 Disk drive, head-slider and method for controlling clearance of a read element and a write element in the disk drive 有权
标题翻译：磁盘驱动器，磁头滑动器和用于控制磁盘驱动器中的读取元件和写入元件的间隙的方法
公开(公告)号：US08125728B2
公开(公告)日：2012-02-28
申请号：US12626445
申请日：2009-11-25
申请人： Masayuki Kurita , Toshiya Shiramatsu , Hidekazu Kohira , Kenji Kuroki
发明人： Masayuki Kurita , Toshiya Shiramatsu , Hidekazu Kohira , Kenji Kuroki
IPC分类号： G11B21/02
CPC分类号： G11B5/6064 , G11B5/3133 , G11B5/40 , G11B5/6005 , G11B2005/0005
摘要： A disk drive. The disk drive includes a disk, a head-slider, a moving mechanism, and a controller. The head-slider includes a read/write element, a first heater element, a contact pad, and a second heater element. The read/write element includes a read element configured to read user data from the disk, and a write element configured to write user data to the disk. The moving mechanism is configured to support and to move the head-slider. The controller is configured to control the second heater element to control contact between the contact pad and the disk, and is configured to control clearance between the read/write element and the disk by using the first heater element with the contact pad in contact with the disk.
摘要翻译：磁盘驱动器磁盘驱动器包括磁盘，磁头滑块，移动机构和控制器。磁头滑块包括读/写元件，第一加热器元件，接触焊盘和第二加热元件。读/写元件包括被配置为从盘读取用户数据的读元件和被配置为将用户数据写入盘的写元件。移动机构构造成支撑和移动头部滑块。控制器被配置为控制第二加热器元件以控制接触垫和盘之间的接触，并且被配置成通过使用第一加热器元件来控制读/写元件和盘之间的间隙，其中接触垫与磁盘。

9. 发明授权

US08773801B2 Magnetic-recording head with first thermal fly-height control element and embedded contact sensor element configurable as second thermal fly-height control element 有权
标题翻译：具有第一热飞高控制元件和嵌入式触点传感器元件的磁记录头可配置为第二热飞高控制元件
公开(公告)号：US08773801B2
公开(公告)日：2014-07-08
申请号：US12909694
申请日：2010-10-21
申请人： Masayuki Kurita , Toshiya Shiramatsu , Kenji Kuroki , Yuki Shimizu
发明人： Masayuki Kurita , Toshiya Shiramatsu , Kenji Kuroki , Yuki Shimizu
IPC分类号： G11B5/60
CPC分类号： G11B5/607 , G11B5/6076
摘要： A magnetic-recording head with a first thermal fly-height control (TFC) element and an embedded contact sensor element (ECSE) configurable as a second TFC element. The magnetic-recording head includes a write element, a read element, a first heater element, and an ECSE. The write element is configured for writing data to a magnetic-recording disk. The read element is configured for reading data from the magnetic-recording disk. The first heater element is configured as a first TFC element to coarsely adjust a fly-height of the magnetic-recording head with respect to the magnetic recording disk. The ECSE is configured to detect a contact with the magnetic-recording disk, and to function as a second heater element that is configured as a second TFC element to finely adjust the fly-height. The first heater element is configured with a first stroke-length larger than a second stroke-length of the second heater element for adjusting the fly-height.
摘要翻译：具有可配置为第二TFC元件的第一热飞跃高度控制（TFC）元件和嵌入式接触传感器元件（ECSE）的磁记录头。磁记录头包括写入元件，读取元件，第一加热器元件和ECSE。写元件被配置为将数据写入磁记录盘。读取元件被配置用于从磁记录盘读取数据。第一加热器元件被配置为第一TFC元件以粗调相对于磁记录盘的磁记录头的飞行高度。 ECSE被配置为检测与磁记录盘的接触，并且用作被配置为第二TFC元件以精细调整飞行高度的第二加热器元件。第一加热器元件配置有大于第二加热器元件的第二冲程长度的第一冲程长度，用于调节飞行高度。

10. 发明申请

US20120099218A1 MAGNETIC-RECORDING HEAD WITH FIRST THERMAL FLY-HEIGHT CONTROL ELEMENT AND EMBEDDED CONTACT SENSOR ELEMENT CONFIGURABLE AS SECOND THERMAL FLY-HEIGHT CONTROL ELEMENT 有权
标题翻译：带有第一个高温控制元件和嵌入式接触传感器元件的磁记录头可配置为第二个高温控制元件
公开(公告)号：US20120099218A1
公开(公告)日：2012-04-26
申请号：US12909694
申请日：2010-10-21
申请人： Masayuki Kurita , Toshiya Shiramatsu , Kenji Kuroki , Yuki Shimizu
发明人： Masayuki Kurita , Toshiya Shiramatsu , Kenji Kuroki , Yuki Shimizu
IPC分类号： G11B5/02
CPC分类号： G11B5/607 , G11B5/6076
摘要： A magnetic-recording head with a first thermal fly-height control (TFC) element and an embedded contact sensor element (ECSE) configurable as a second TFC element. The magnetic-recording head includes a write element, a read element, a first heater element, and an ECSE. The write element is configured for writing data to a magnetic-recording disk. The read element is configured for reading data from the magnetic-recording disk. The first heater element is configured as a first TFC element to coarsely adjust a fly-height of the magnetic-recording head with respect to the magnetic recording disk. The ECSE is configured to detect a contact with the magnetic-recording disk, and to function as a second heater element that is configured as a second TFC element to finely adjust the fly-height. The first heater element is configured with a first stroke-length larger than a second stroke-length of the second heater element for adjusting the fly-height.
摘要翻译：具有可配置为第二TFC元件的第一热飞跃高度控制（TFC）元件和嵌入式接触传感器元件（ECSE）的磁记录头。磁记录头包括写入元件，读取元件，第一加热器元件和ECSE。写元件被配置为将数据写入磁记录盘。读取元件被配置用于从磁记录盘读取数据。第一加热器元件被配置为第一TFC元件以粗调相对于磁记录盘的磁记录头的飞行高度。 ECSE被配置为检测与磁记录盘的接触，并且用作被配置为第二TFC元件以精细调整飞行高度的第二加热器元件。第一加热器元件配置有大于第二加热器元件的第二冲程长度的第一冲程长度，用于调节飞行高度。

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