公开(公告)号：US20080192379A1

公开(公告)日：2008-08-14

申请号：US12011284

申请日：2008-01-24

申请人： Masayuki Kurita ,  Hideaki Tanaka ,  Noriaki Satoh ,  Toyomi Ohsawa ,  Toshiya Shiramatsu ,  Atsushi Yatagai ,  Satoshi Ohki ,  Hiroshi Ide ,  Hidekazu Kohira ,  Takehiko Hamaguchi

发明人： Masayuki Kurita ,  Hideaki Tanaka ,  Noriaki Satoh ,  Toyomi Ohsawa ,  Toshiya Shiramatsu ,  Atsushi Yatagai ,  Satoshi Ohki ,  Hiroshi Ide ,  Hidekazu Kohira ,  Takehiko Hamaguchi

IPC分类号： G11B5/48 ,  G11B5/56 ,  G11B5/60 ,  G11B21/21 ,  G01R31/01

CPC分类号： G11B5/455 ,  G11B5/3133 ,  G11B5/6029 ,  G11B5/607 ,  G11B5/6076 ,  Y10T29/49004

摘要： Embodiments of the present invention provide a process that monitors a magnetic playback signal while gradually increasing an electricity supply amount for a heater to thereby determine contact between a magnetic head slider and a magnetic disk medium. According to one embodiment, after components for configuring a magnetic recording/playback portion are assembled into a housing, magnetic information is played back on a specific track of a magnetic disk medium by using a playback element while gradually increasing an electricity supply amount for a heater of a magnetic head slider. An amplitude of a playback signal is measured at a plurality of portions along a circumferential direction of the track. Contact between the magnetic head slider and the magnetic disk medium is detected in accordance with an increase in variation in the measured amplitude. Then, a value obtained by subtracting an predetermined value of an electricity amount from an electricity amount in the event of detection of the contact is stored (set) as an appropriate electricity amount for the magnetic head slider into a storage portion.

摘要翻译： 本发明的实施例提供了一种监视磁回放信号的过程，同时逐渐增加用于加热器的电力供应量，从而确定磁头滑块和磁盘介质之间的接触。 根据一个实施例，在用于配置磁记录/重放部分的组件被组装到外壳中之后，通过使用回放元件在磁盘介质的特定轨道上回放磁信息，同时逐渐增加加热器的供电量 的磁头滑块。 沿着轨道的圆周方向的多个部分测量重放信号的幅度。 根据测量幅度的变化的增加来检测磁头滑块和磁盘介质之间的接触。 然后，通过从检测到接触的电量的电量中减去电量的预定值而获得的值作为用于磁头滑块的适当电量被存储（设置）到存储部分中。

公开(公告)号：US07630160B2

公开(公告)日：2009-12-08

申请号：US12006683

申请日：2008-01-04

申请人： Masayuki Kurita ,  Masashi Murai ,  Hideaki Tanaka ,  Noriaki Satoh ,  Hiroshi Fukuda ,  Tsukasa Fujimori

发明人： Masayuki Kurita ,  Masashi Murai ,  Hideaki Tanaka ,  Noriaki Satoh ,  Hiroshi Fukuda ,  Tsukasa Fujimori

IPC分类号： G11B15/18 ,  G11B33/14

CPC分类号： G11B33/121

摘要： Embodiments of the present invention help to improve the cost, mountability, and reliability of a magnetic disk drive that regulates a fly height of a magnetic head slider correspondingly to the operating altitude of the drive by using an air pressure sensor and a heater. According to one embodiment, a preamplifier is a semiconductor chip formed by three-dimensionally laminating thin film circuits on a bulk silicon wafer. An air pressure sensor is integrally formed on the semiconductor chip through a semiconductor process. The air pressure sensor is configured to include an isolating cavity, a diaphragm that deflecting in response to a change in a pressure difference between the isolating cavity and the outside, and lower and upper electrodes and for detecting variation in electrostatic capacitance. The preamplifier including the air pressure sensor integrally formed therein is attached to a flexible printed cable (FPC) to oppose the FPC. A through-hole is provided in a portion opposite the air pressure sensor of the FPC to introduce air pressure in an operating environment into a diaphragm of the air pressure sensor.

摘要翻译： 本发明的实施例有助于提高磁盘驱动器的成本，安装性和可靠性，其通过使用空气压力传感器和加热器来调节磁头滑块的飞行高度，与驱动器的操作高度相对应。 根据一个实施例，前置放大器是通过在体硅晶片上三维层叠薄膜电路而形成的半导体芯片。 通过半导体工艺在半导体芯片上整体地形成气压传感器。 空气压力传感器被构造成包括隔离腔，响应于隔离腔和外部之间的压差以及下部和上部电极的变化以及用于检测静电电容的变化而偏转的隔膜。 包括一体地形成在其中的空气压力传感器的前置放大器附接到柔性印刷电缆（FPC）以与FPC相对。 在与FPC的空气压力传感器相对的部分设置通孔，以将操作环境中的空气压力引入空气压力传感器的隔膜。

公开(公告)号：US07457073B2

公开(公告)日：2008-11-25

申请号：US11706934

申请日：2007-02-14

申请人： Masayuki Kurita ,  Yukie Hiratsuka ,  Mikio Tokuyama ,  Hideaki Tanaka

发明人： Masayuki Kurita ,  Yukie Hiratsuka ,  Mikio Tokuyama ,  Hideaki Tanaka

IPC分类号： G11B5/60 ,  G11B21/21

CPC分类号： G11B19/26 ,  G11B5/5526 ,  G11B5/6005 ,  G11B5/6064 ,  G11B19/00 ,  G11B19/20

摘要： Embodiments in accordance with the present invention allow a magnetic disk drive to achieve noise reduction and low power consumption through rotation at a low speed and a high transfer rate through rotation at a high speed while allowing reliability to be maintained and achieving an improved recording density. An embodiment of a magnetic disk drive in accordance with the present invention includes, a magnetic disk medium driven at a plurality of rotational speeds, a magnetic head for recording and reproducing data in and from the magnetic disk medium, a heater for controlling a flying height of the magnetic head, and a control unit for controlling the current to the heater, and in that the control unit controls the current to the heater. The control unit controls the current to the heater according to the plurality of rotational speeds.

摘要翻译： 根据本发明的实施例允许磁盘驱动器通过以高速旋转而以低速旋转和高传送速率实现噪声降低和低功耗，同时允许保持可靠性并实现改善的记录密度。 根据本发明的磁盘驱动器的实施例包括：以多个旋转速度驱动的磁盘介质，用于在磁盘介质中记录和再现数据的磁头，用于控制飞行高度的加热器 以及用于控制到加热器的电流的控制单元，并且控制单元控制到加热器的电流。 控制单元根据多个转速来控制加热器的电流。

公开(公告)号：US07278902B1

公开(公告)日：2007-10-09

申请号：US11375721

申请日：2006-03-14

申请人： Masayuki Kurita ,  Remmelt Pit ,  Shozo Saegusa ,  Toshiya Shiramatsu ,  Mike Suk ,  Hideaki Tanaka

发明人： Masayuki Kurita ,  Remmelt Pit ,  Shozo Saegusa ,  Toshiya Shiramatsu ,  Mike Suk ,  Hideaki Tanaka

IPC分类号： B24B49/00

CPC分类号： G11B5/012 ,  G11B5/8404 ,  Y10T29/47 ,  Y10T29/49048

摘要： Various embodiments of the present invention pertain to enabling location specific burnishing of a disk. According to one embodiment, the smoothness of a disk is evaluated by gliding over a disk to determine if there is an asperity on the disk. If there is an asperity on the disk, a location of the asperity is stored to enable location specific burnishing of the disk.

摘要翻译： 本发明的各种实施例涉及使盘的位置特定抛光。 根据一个实施例，通过在盘上滑动来评估盘的平滑度，以确定盘上是否存在粗糙度。 如果磁盘上有一个粗体，则会存储一个粗糙部分，以便对磁盘进行位置特定的抛光。

公开(公告)号：US07124625B1

公开(公告)日：2006-10-24

申请号：US11131736

申请日：2005-05-17

申请人： Masayuki Kurita ,  Remmelt Pit ,  Shozo Saegusa ,  Toshiya Shiramatsu ,  Mike Suk ,  Hideaki Tanaka

发明人： Masayuki Kurita ,  Remmelt Pit ,  Shozo Saegusa ,  Toshiya Shiramatsu ,  Mike Suk ,  Hideaki Tanaka

IPC分类号： G01B5/28 ,  G01B21/30

CPC分类号： G11B5/582 ,  G11B5/3133 ,  G11B5/314 ,  G11B5/40 ,  G11B5/455 ,  G11B5/4555 ,  G11B5/6005 ,  G11B5/6064 ,  G11B5/607 ,  G11B5/6076

摘要： A glide-height disk-tester operates with the test disk rotating at a predetermined constant rotational speed and uses a glide head with an electrically-resistive heater and a thermally-responsive protrusion pad located on its trailing end. The linear velocity of the disk relative to the slider maintains the slider at its nominal fly height, which is typically higher than any expected asperity. With no current applied to the heater, the protrusion pad is generally flush with the air-bearing surface of the slider. Increasing levels of current are applied to the heater, which causes movement of the protrusion pad toward the disk surface. When the pad contacts an asperity, the current level applied at the instant of asperity contact is recorded. The applied current level can be correlated to the glide height from a previous calibration process using a calibration disk with known calibration bump heights.

摘要翻译： 滑行高度盘式测试仪以测试盘以预定的恒定转速旋转，并且使用具有电阻加热器的滑动头和位于其后端的热响应突起垫。 盘相对于滑块的线速度将滑块保持在其标称飞行高度，其通常高于任何预期的粗糙度。 在没有电流施加到加热器的情况下，突出垫通常与滑块的空气轴承表面齐平。 增加电流的电流被施加到加热器，这导致突起垫朝着盘表面移动。 当焊盘接触不均匀时，记录在粗糙接触瞬间施加的电流电平。 施加的电流水平可以使用具有已知校准凸块高度的校准盘与先前校准过程的滑移高度相关联。

公开(公告)号：US20060119974A1

公开(公告)日：2006-06-08

申请号：US11282221

申请日：2005-11-18

申请人： Takanori Yamazaki ,  Hideaki Tanaka ,  Masayuki Kurita

发明人： Takanori Yamazaki ,  Hideaki Tanaka ,  Masayuki Kurita

IPC分类号： G11B21/02 ,  G11B19/02

CPC分类号： G11B5/6064 ,  G11B5/607 ,  G11B5/6082

摘要： Embodiments of the invention appropriately control the flying height of a magnetic head slider as necessary without making the magnetic head slider touch the magnetic disk. In one embodiment, when a magnetic disk drive is started, the level of electric power predefined for the ordinary temperature (room temperature) is read in from the internal memory of an MPU. A temperature sensor measures the internal temperature of the magnetic disk drive and sends it to the MPU. According to the temperature sent from the temperature sensor, the MPU calculates the level of electric power which should be applied to a flying height adjustment structure. According to the calculated electric power, the MPU increases or decreases the electric power applied to the flying height adjustment structure. At a flying height controlled (corrected) by the flying height adjustment structure, a magnetic head slider performs read/write on a magnetic disk.

公开(公告)号：US20070030593A1

公开(公告)日：2007-02-08

申请号：US11494683

申请日：2006-07-26

申请人： Ono Hiroyuki ,  Mike Suk ,  Hideaki Tanaka ,  Masayuki Kurita

发明人： Ono Hiroyuki ,  Mike Suk ,  Hideaki Tanaka ,  Masayuki Kurita

IPC分类号： G11B5/00

CPC分类号： G11B5/6064 ,  G11B5/6005 ,  G11B2005/0021

摘要： Embodiment of the invention improve the productivity of a magnetic disk drive that controls the flying height of a magnetic head by use of a heater. According to an embodiment, in a method for manufacturing a magnetic disk drive that writes/reads information to/from a magnetic disk medium by use of a magnetic head including a heater adapted to control the flying height, the read and write performance of the magnetic head is tested; a heating condition used at the time of heating by the heater is determined on the basis of the test results; and a control parameter that specifies the amount of heating by the heater in the determined heating condition is determined.

摘要翻译： 本发明的实施例提高了通过使用加热器来控制磁头的飞行高度的磁盘驱动器的生产率。 根据一个实施例，在一种用于制造磁盘驱动器的方法中，该磁盘驱动器通过使用包括适于控制飞行高度的加热器的磁头来向/从磁盘介质读取/读取信息的磁盘驱动器，磁性读取和写入性能 头被测试 基于测试结果确定加热器加热时使用的加热条件; 并且确定在确定的加热条件中指定加热器的加热量的控制参数。

公开(公告)号：US20070214874A1

公开(公告)日：2007-09-20

申请号：US11375721

申请日：2006-03-14

申请人： Masayuki Kurita ,  Remmelt Pit ,  Shozo Saegusa ,  Toshiya Shiramatsu ,  Mike Suk ,  Hideaki Tanaka

发明人： Masayuki Kurita ,  Remmelt Pit ,  Shozo Saegusa ,  Toshiya Shiramatsu ,  Mike Suk ,  Hideaki Tanaka

IPC分类号： B23Q17/09

CPC分类号： G11B5/012 ,  G11B5/8404 ,  Y10T29/47 ,  Y10T29/49048

摘要： Various embodiments of the present invention pertain to enabling location specific burnishing of a disk. According to one embodiment, the smoothness of a disk is evaluated by gliding over a disk to determine if there is an asperity on the disk. If there is an asperity on the disk, a location of the asperity is stored to enable location specific burnishing of the disk.

摘要翻译： 本发明的各种实施例涉及使盘的位置特定抛光。 根据一个实施例，通过在盘上滑动来评估盘的平滑度，以确定盘上是否存在粗糙度。 如果磁盘上有一个粗体，则会存储一个粗糙部分，以便对磁盘进行位置特定的抛光。

公开(公告)号：US07153193B1

公开(公告)日：2006-12-26

申请号：US11253102

申请日：2005-10-18

申请人： Masayuki Kurita ,  Remmelt Pit ,  Shozo Saegusa ,  Toshiya Shiramatsu ,  Mike Suk ,  Hideaki Tanaka

发明人： Masayuki Kurita ,  Remmelt Pit ,  Shozo Saegusa ,  Toshiya Shiramatsu ,  Mike Suk ,  Hideaki Tanaka

IPC分类号： B24B1/00

CPC分类号： G11B5/6005 ,  G11B5/455 ,  Y10T29/47 ,  Y10T29/49048

摘要： A system for selectively sensing and removing asperities from hard disk drive disk is disclosed. The system includes a test stand supporting the disk, the test stand having at least one suspension for flying over a surface of the disk. The system also includes a glide pad coupled to the at least one suspension for flying over the surface and locating asperities. A PZT sensor is coupled to the glide pad for sensing and mapping asperities on the surface of the disk. A burnish pad is coupled to the at least one suspension for wearing-away sensed and mapped asperities on the surface of the disk and a thermal fly height controller is coupled to the burnish pad for protruding the burnish pad when it is proximate to one of the mapped asperities for facilitating the wearing-away of the mapped asperity.

摘要翻译： 公开了一种用于从硬盘驱动器盘选择性地感测和去除凹凸的系统。 该系统包括支撑盘的测试台，测试台具有至少一个用于在盘的表面上飞行的悬架。 该系统还包括联接到至少一个悬架的滑动垫，用于在表面上飞行并定位凹凸。 PZT传感器耦合到滑动垫，用于感测和映射盘表面上的粗糙度。 抛光垫耦合到至少一个悬架，用于在盘的表面上磨损感测和映射的凹凸，并且热飞溅高度控制器耦合到抛光垫，用于当抛光垫接近于其中的一个时，突出抛光垫 绘制了凹凸，以便于图形凹凸的磨损。

公开(公告)号：US06744598B2

公开(公告)日：2004-06-01

申请号：US10420904

申请日：2003-04-23

申请人： Hidekazu Kohira ,  Masaaki Matsumoto ,  Hideaki Tanaka ,  Teruyoshi Higashiya ,  Kiyoshi Hashimoto ,  Akira Matsuda ,  Takanori Yamazaki

发明人： Hidekazu Kohira ,  Masaaki Matsumoto ,  Hideaki Tanaka ,  Teruyoshi Higashiya ,  Kiyoshi Hashimoto ,  Akira Matsuda ,  Takanori Yamazaki

IPC分类号： G11B560

CPC分类号： G11B21/21 ,  G11B5/012 ,  G11B5/6082 ,  G11B33/14

摘要： A magnetic head slider having a plurality of surfaces which are formed sequentially from an adjacent side to a magnetic disk, and a slider rail surface, which is arranged near an air flow-out edge on a nearest surface of the plurality of surfaces including a long sideways rail surface on an air flow-in side and a lengthwise rail surface on an air flow-out side, has a magnetic head. An area of the long sideways rail surface is larger than an area of the lengthwise rail surface.

摘要翻译： 一种磁头滑块，其具有从磁盘的相邻侧依次形成的多个表面，以及滑块轨道表面，其布置在多个表面的最近表面上的空气流出边缘附近，包括长 空气流入侧的横向导轨表面和空气流出侧的纵向导轨表面具有磁头。 长边横梁面的面积大于纵向导轨面的面积。