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1. 发明授权

US07365931B2 Information-recording/reproducing apparatus and method of detecting the gap between a head and a recording medium 有权
标题翻译：信息记录/再现装置和检测头与记录介质之间的间隙的方法
公开(公告)号：US07365931B2
公开(公告)日：2008-04-29
申请号：US11512332
申请日：2006-08-30
申请人： Yoshiaki Ikai , Atsuo Iida , Takahiro Imamura , Tohru Fujimaki , Toru Yokohata
发明人： Yoshiaki Ikai , Atsuo Iida , Takahiro Imamura , Tohru Fujimaki , Toru Yokohata
IPC分类号： G11B21/02
CPC分类号： G11B5/6005 , G11B5/6064
摘要： A method of detecting a gap between a head and a recording medium in an information-recording/reproducing apparatus that uses the head to record and reproduce information in and from the recording medium. In the method, the gap between the head and the recording medium is alternately increased and decreased, thereby gradually reducing the gap between the head and the recording medium. A detection signal is detected from which to determine a contact between the head or a slider supporting the head and the recording medium. When it is determined that the head or the slider has contacted the recording medium, the head is stopped and moved away from the recording medium to a prescribed position, and data representing a distance the head has moved to contact the recoding medium is acquired.
摘要翻译：一种在使用该头在记录介质中记录和再现信息的信息记录/再现装置中检测头部和记录介质之间的间隙的方法。在该方法中，头部和记录介质之间的间隙交替地增加和减小，从而逐渐减小头部和记录介质之间的间隙。检测检测信号以确定头部或支撑头部的滑块与记录介质之间的接触。当确定头部或滑块已经接触到记录介质时，头被停止并从记录介质移开到规定位置，并且获取表示磁头移动以与记录介质接触的距离的数据。

2. 发明申请

US20080239581A1 Apparatus for determining contact of head slider and method of determining contact of head slider 审中-公开
标题翻译：用于确定磁头滑块的接触的装置和确定磁头滑块的接触的方法
公开(公告)号：US20080239581A1
公开(公告)日：2008-10-02
申请号：US11892452
申请日：2007-08-23
申请人： Yoshiaki Ikai , Takahiro Imamura , Tohru Fujimaki , Toru Yokohata
发明人： Yoshiaki Ikai , Takahiro Imamura , Tohru Fujimaki , Toru Yokohata
IPC分类号： G11B5/52
CPC分类号： G11B5/40 , G11B5/3136 , G11B5/6064
摘要： An AC power source is connected to a write coil mounted on a head slider for determination of contact of a head slider with a storage medium. The AC power source outputs the alternating current having a specific frequency. A measuring circuit measures a sequence of indices for the alternating current supplied to the write coil. A component corresponding to the specific frequency is extracted from the sequence of the indices. This serves to eliminate components corresponding to frequencies other than the specific frequency, namely noise. A detecting circuit detects contact between the head slider and the storage medium based on a change in the amplitude of the sequence appearing at the specific frequency. The contact can thus reliably be detected between the head slider and the storage medium.
摘要翻译： AC电源连接到安装在磁头滑块上的写入线圈，用于确定磁头滑块与存储介质的接触。 AC电源输出具有特定频率的交流电。测量电路测量提供给写入线圈的交流电的索引序列。从索引序列中提取对应于特定频率的分量。这用于消除对应于除特定频率以外的频率的分量，即噪声。检测电路基于以特定频率出现的序列的振幅的变化来检测磁头滑块和存储介质之间的接触。因此，可以在磁头滑动器和存储介质之间可靠地检测触点。

3. 发明申请

US20070253092A1 Information-recording/reproducing apparatus and method of detecting the gap between a head and a recording medium 有权
标题翻译：信息记录/再现装置和检测头与记录介质之间的间隙的方法
公开(公告)号：US20070253092A1
公开(公告)日：2007-11-01
申请号：US11512332
申请日：2006-08-30
申请人： Yoshiaki Ikai , Atsuo Iida , Takahiro Imamura , Tohru Fujimaki , Toru Yokohata
发明人： Yoshiaki Ikai , Atsuo Iida , Takahiro Imamura , Tohru Fujimaki , Toru Yokohata
IPC分类号： G11B21/02 , G11B27/36
CPC分类号： G11B5/6005 , G11B5/6064
摘要： A method of detecting a gap between a head and a recording medium in an information-recording/reproducing apparatus that uses the head to record and reproduce information in and from the recording medium. In the method, the gap between the head and the recording medium is alternately increased and decreased, thereby gradually reducing the gap between the head and the recording medium. A detection signal is detected from which to determine a contact between the head or a slider supporting the head and the recording medium. When it is determined that the head or the slider has contacted the recording medium, the head is stopped and moved away from the recording medium to a prescribed position, and data representing a distance the head has moved to contact the recoding medium is acquired.
摘要翻译：一种在使用该头在记录介质中记录和再现信息的信息记录/再现装置中检测头部和记录介质之间的间隙的方法。在该方法中，头部和记录介质之间的间隙交替地增加和减小，从而逐渐减小头部和记录介质之间的间隙。检测检测信号以确定头部或支撑头部的滑块与记录介质之间的接触。当确定头部或滑块已经接触到记录介质时，头被停止并从记录介质移开到规定位置，并且获取表示磁头移动以与记录介质接触的距离的数据。

4. 发明申请

US20080074797A1 Storage medium drive capable of reducing wiring related to head slider 审中-公开
标题翻译：存储介质驱动器能够减少与磁头滑块相关的布线
公开(公告)号：US20080074797A1
公开(公告)日：2008-03-27
申请号：US11878533
申请日：2007-07-25
申请人： Yoshiaki Ikai , Toru Yokohata , Takahiro Imamura , Kenrou Yamamoto
发明人： Yoshiaki Ikai , Toru Yokohata , Takahiro Imamura , Kenrou Yamamoto
IPC分类号： G11B5/56 , G11B21/24
CPC分类号： G11B5/486 , G11B5/4853 , G11B5/5552
摘要： A first wiring connects a first actuator to a controlling circuit on a head slider. The second wiring connects the second actuator to the first wiring in parallel with the first actuator. A first rectifying element is inserted in the first wiring. A second rectifying element is inserted in the second wiring. When electric voltage is applied to the first and second wiring in a first direction, the electric voltage acts on the first wiring. Only the first actuator is allowed to receive the electric voltage. When electric voltage is applied to the first and second wiring in a second direction opposite to the first direction, the electric voltage acts on the second wiring. Only the second actuator is allowed to receive the electric voltage in the second direction.
摘要翻译：第一布线将第一致动器连接到磁头滑块上的控制电路。第二布线将第二致动器与第一致动器并联连接到第一布线。第一整流元件插入第一布线。第二整流元件插入第二布线。当在第一方向上向第一和第二布线施加电压时，电压作用在第一布线上。只允许第一个执行器接收电压。当在与第一方向相反的第二方向上向第一和第二布线施加电压时，电压作用在第二布线上。只允许第二个致动器在第二个方向上接收电压。

5. 发明申请

US20070127148A1 Apparatus and method for detecting contact between head and recording medium, and method for manufacturing head 审中-公开
标题翻译：用于检测头部和记录介质之间的接触的装置和方法，以及制造头部的方法
公开(公告)号：US20070127148A1
公开(公告)日：2007-06-07
申请号：US11523645
申请日：2006-09-20
申请人： Toru Yokohata , Takeshi Iwase , Takahisa Ueno , Seigo Igaki , Takahiro Imamura , Tohru Fujimaki
发明人： Toru Yokohata , Takeshi Iwase , Takahisa Ueno , Seigo Igaki , Takahiro Imamura , Tohru Fujimaki
IPC分类号： G11B27/36 , G11B21/02
CPC分类号： G11B27/36 , G11B5/6005 , G11B5/6064 , G11B19/04
摘要： In a contact detecting apparatus that detects contact of a head with a recording medium, a signal writing unit writes onto the recording medium, a signal that includes at least one predetermined frequency component; and a contact detecting unit detects the contact of the head with the recording medium based on an amplitude of the predetermined frequency component, by reading the signal written on the recording medium while changing a spacing between the head and the recording medium.
摘要翻译：在检测头与记录介质的接触的接触检测装置中，信号写入单元向记录介质写入包括至少一个预定频率分量的信号; 并且接触检测单元通过在改变头部和记录介质之间的间隔的同时读取记录在记录介质上的信号，基于预定频率分量的振幅来检测头与记录介质的接触。

6. 发明授权

US07057385B2 Method of inspecting magnetic recording medium based on contact duration time 失效
标题翻译：基于接触持续时间检查磁记录介质的方法
公开(公告)号：US07057385B2
公开(公告)日：2006-06-06
申请号：US10386637
申请日：2003-03-12
申请人： Toru Yokohata , Takahiro Imamura , Toshiya Fujita , Yojiro Ochiai , Masahiro Ozeki , Naoki Satake
发明人： Toru Yokohata , Takahiro Imamura , Toshiya Fujita , Yojiro Ochiai , Masahiro Ozeki , Naoki Satake
IPC分类号： G01R33/12
CPC分类号： G11B5/6005 , G01R33/1207 , G11B5/00 , G11B5/012 , G11B2005/001
摘要： A magnetic recording medium inspection method detects small protrusions that constitute defects on the surface of a magnetic recording medium. The method includes flying a glide inspection head at a predetermined height over the surface of the moving magnetic recording medium; detecting a contact duration time during which the glide head is in contact with a protrusion on the surface of the magnetic recording medium using a contact detection sensor attached to the glide inspection head; and determining the small protrusion based on the contact duration time.
摘要翻译：磁记录介质检查方法检测在磁记录介质的表面上构成缺陷的小突起。该方法包括在移动磁记录介质的表面上以预定高度飞行滑动检查头; 使用附接到所述滑行检查头的接触检测传感器来检测所述滑动头与所述磁记录介质的表面上的突起接触的接触持续时间; 以及基于所述接触持续时间确定所述小突起。

7. 发明申请

US20070127147A1 Contact detecting apparatus, and method for detecting contact 审中-公开
标题翻译：接触检测装置和接触检测方法
公开(公告)号：US20070127147A1
公开(公告)日：2007-06-07
申请号：US11387064
申请日：2006-03-23
申请人： Toru Yokohata , Takeshi Iwase , Takahisa Ueno , Seigo Igaki , Takahiro Imamura
发明人： Toru Yokohata , Takeshi Iwase , Takahisa Ueno , Seigo Igaki , Takahiro Imamura
IPC分类号： G11B27/36 , G11B21/02
CPC分类号： G11B5/6005 , G11B5/6064
摘要： In a contact detecting apparatus that detects contact of a head with a recording medium, a signal writing unit writes onto the recording medium, a signal that includes at least one predetermined frequency component; and a contact detecting unit detects the contact of the head with the recording medium based on an amplitude of the predetermined frequency component, by reading the signal written on the recording medium while changing a spacing between the head and the recording medium.
摘要翻译：在检测头与记录介质的接触的接触检测装置中，信号写入单元向记录介质写入包括至少一个预定频率分量的信号; 并且接触检测单元通过在改变头部和记录介质之间的间隔的同时读取记录在记录介质上的信号，基于预定频率分量的振幅来检测头与记录介质的接触。

8. 发明授权

US07522360B2 Flying height measurement apparatus and method therefor 失效
标题翻译：飞行高度测量装置及其方法
公开(公告)号：US07522360B2
公开(公告)日：2009-04-21
申请号：US11480835
申请日：2006-07-06
申请人： Takahiro Imamura , Toru Yokohata
发明人： Takahiro Imamura , Toru Yokohata
IPC分类号： G11B27/36 , G11B21/02
CPC分类号： G11B5/6029 , G11B5/6005
摘要： Provided is a new apparatus for measuring a flying height of a head requiring none of a specific magnetization pattern, that is, ahead flying height measurement apparatus for use within a disk drive including a reading head, including: a signal replay unit 300 for replaying a signal from the reading head; filter units 320 and 322, being connected to the signal replay unit, for filtering the replayed signal; amplitude detection units 330 and 332, being connected to each of the filter units, for detecting a maximum amplitude or a representative value close thereto from the filtered replayed signal; and a calculation unit 340 for calculating a flying height of the reading head within the disk drive by using the maximum amplitude, or the representative value close thereto, which is detected by the amplitude detection unit.
摘要翻译：提供了一种用于测量不需要特定磁化模式的磁头的飞行高度的新装置，即包括读取头的磁盘驱动器内的前置飞行高度测量装置，包括：重放信号重放单元300 来自阅读头的信号; 滤波器单元320和322连接到信号重放单元，用于对重放的信号进行滤波; 幅度检测单元330和332连接到每个滤波器单元，用于从滤波的重放信号中检测最接近其的最大振幅或代表值; 以及计算单元340，用于通过使用由振幅检测单元检测到的最大振幅或靠近其的代表值来计算盘驱动器内的读取头的飞行高度。

9. 发明授权

US07369341B2 Head flying height measuring apparatus in magnetic storage device 失效
标题翻译：磁存储装置中的头部飞行高度测量装置
公开(公告)号：US07369341B2
公开(公告)日：2008-05-06
申请号：US11476584
申请日：2006-06-29
申请人： Toru Yokohata , Takahiro Imamura , Atsuo Iida
发明人： Toru Yokohata , Takahiro Imamura , Atsuo Iida
IPC分类号： G11B27/36 , G11B21/02
CPC分类号： G11B5/6029 , G11B5/6005 , G11B2220/2516
摘要： Firstly, in order to check the noise level of a device, DC erasure is applied to a magnetic recording medium and the magnetic recording medium is read. Then, a test signal including a first order component and a third order harmonic frequency is written into the magnetic recording medium. The written test signal is read and Fourier transform is applied to the read signal to obtain the respective amplitude of the first order and third order harmonic components. Then, it is determined whether the amplitude of the third order harmonic component is sufficiently large compared with the obtained noise level. If the amplitude is sufficiently large, the flying height of the head is estimated using both the first order and third order harmonic components. If the amplitude is not sufficiently large, the flying height of the head is estimated using only the first order component.
摘要翻译：首先，为了检查设备的噪声水平，将DC擦除应用于磁记录介质，并读取磁记录介质。然后，将包括一阶分量和三阶谐波频率的测试信号写入磁记录介质。写入的测试信号被读取并且对读取信号进行傅里叶变换，以获得一阶和三阶谐波分量的相应振幅。然后，与获得的噪声电平相比，确定三阶谐波分量的幅度是否足够大。如果振幅足够大，则使用一阶和三阶谐波分量来估计磁头的飞行高度。如果振幅不够大，则仅使用一阶分量来估计头的飞行高度。

10. 发明申请

US20070230013A1 Head flying height measuring apparatus in magnetic storage device 失效
标题翻译：磁存储装置中的头部飞行高度测量装置
公开(公告)号：US20070230013A1
公开(公告)日：2007-10-04
申请号：US11476584
申请日：2006-06-29
申请人： Toru Yokohata , Takahiro Imamura , Atsuo Iida
发明人： Toru Yokohata , Takahiro Imamura , Atsuo Iida
IPC分类号： G11B21/02 , G11B27/36
CPC分类号： G11B5/6029 , G11B5/6005 , G11B2220/2516
摘要： Firstly, in order to check the noise level of a device, DC erasure is applied to a magnetic recording medium and the magnetic recording medium is read. Then, a test signal including a first order component and a third order harmonic frequency is written into the magnetic recording medium. The written test signal is read and Fourier transform is applied to the read signal to obtain the respective amplitude of the first order and third order harmonic components. Then, it is determined whether the amplitude of the third order harmonic component is sufficiently large compared with the obtained noise level. If the amplitude is sufficiently large, the flying height of the head is estimated using both the first order and third order harmonic components. If the amplitude is not sufficiently large, the flying height of the head is estimated using only the first order component.
摘要翻译：首先，为了检查设备的噪声水平，将DC擦除应用于磁记录介质，并读取磁记录介质。然后，将包括一阶分量和三阶谐波频率的测试信号写入磁记录介质。写入的测试信号被读取并且对读取信号进行傅里叶变换，以获得一阶和三阶谐波分量的相应振幅。然后，与获得的噪声电平相比，确定三阶谐波分量的幅度是否足够大。如果振幅足够大，则使用一阶和三阶谐波分量来估计磁头的飞行高度。如果振幅不够大，则仅使用一阶分量来估计头的飞行高度。

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