公开(公告)号：US6128153A

公开(公告)日：2000-10-03

申请号：US805161

申请日：1997-02-24

申请人： Susumu Hasegawa ,  Yukihiro Uematsu ,  Tomoyoshi Yamada ,  Takahisa Ueno ,  Nobuyuki Suzuki ,  Keiji Aruga ,  Shuichi Hashimoto

发明人： Susumu Hasegawa ,  Yukihiro Uematsu ,  Tomoyoshi Yamada ,  Takahisa Ueno ,  Nobuyuki Suzuki ,  Keiji Aruga ,  Shuichi Hashimoto

IPC分类号： G11B21/10 ,  G11B5/596

CPC分类号： G11B5/59627

摘要： Head position control is implemented in a disk drive for the case in which a disk is assembled into the disk drive after a precise track is recorded onto it using an external apparatus, which is capable of high-speed access even if there is eccentricity between a track defined by servo information and the center of rotation of the track. Two phase servo bursts consisting of servo information are recorded onto each of the servo information regions of a disk surface, in mutual alternation, the strength ratio between signals detected from these two phase servo bursts being used to determine to which side the head is displaced. By performing control so that this strength ratio is a prescribed value at each angular position, control is achieved so that the head moves along a circular path of rotation, even if there is eccentricity in the servo circular path defined by the recorded servo information with respect to the center of rotation.

摘要翻译： 在磁盘驱动器中实现磁头位置控制，其中在使用外部设备将精确磁道记录在其上之后将磁盘组装到磁盘驱动器中的情况下，其能够高速访问，即使在 由伺服信息定义的轨道和轨道的旋转中心。 由伺服信息组成的两相伺服脉冲串相互交替地记录在盘表面的每个伺服信息区域上，从这两个相位伺服脉冲串检测的信号之间的强度比用于确定磁头移位到哪一侧。 通过进行各个角度位置的强度比为规定值的控制，即使在由所记录的伺服信息确定的伺服圆形路径中存在偏心，也能够沿着圆形的旋转路径进行控制 到旋转中心。

公开(公告)号：US06496322B1

公开(公告)日：2002-12-17

申请号：US09626706

申请日：2000-07-26

申请人： Susumu Hasegawa ,  Tomoyoshi Yamada ,  Takahisa Ueno

发明人： Susumu Hasegawa ,  Tomoyoshi Yamada ,  Takahisa Ueno

IPC分类号： G11B5596

CPC分类号： G11B5/59627

摘要： An object of the present invention is to implement head position control in a disk drive for the case in which a disk is assembled into the disk drive after a precise track is recorded onto it using an external apparatus, which is capable of high-speed access even if there is eccentricity between a track defined by servo information and the center of rotation of the track. Two phase servo bursts consisting of servo information are recorded onto each of the servo information regions of a disk surface, in mutual alternation, the strength ratio between signals detected from these two phase servo bursts being used to determine to which side the head is displaced. By performing control so that this strength ratio is a prescribed value at each angular position, control is achieved so that the head moves along a circular path of rotation, even if there is eccentricity in the servo circular path defined by the recorded servo information with respect to the center of rotation.

摘要翻译： 本发明的一个目的是在使用能够高速访问的外部设备将精确轨道记录在其上之后，在盘驱动器中实现磁盘组装到磁盘驱动器中的情况下实现磁头位置控制 即使在由伺服信息定义的轨道与轨道的旋转中心之间存在偏心度。 由伺服信息组成的两相伺服脉冲串相互交替地记录在盘表面的每个伺服信息区域上，从这两个相位伺服脉冲串检测的信号之间的强度比用于确定磁头移位到哪一侧。 通过进行各个角度位置的强度比为规定值的控制，即使在由所记录的伺服信息确定的伺服圆形路径中存在偏心，也能够沿着圆形的旋转路径进行控制 到旋转中心。

公开(公告)号：US06327120B1

公开(公告)日：2001-12-04

申请号：US09057174

申请日：1998-04-08

申请人： Shinji Koganezawa ,  Toru Kohei ,  Tomoyoshi Yamada ,  Yukihiro Uematsu ,  Tadayoshi Noguchi ,  Hisashi Nakano ,  Ryuma Sakamoto ,  Junichi Inoue ,  Tetsuya Suzuki

发明人： Shinji Koganezawa ,  Toru Kohei ,  Tomoyoshi Yamada ,  Yukihiro Uematsu ,  Tadayoshi Noguchi ,  Hisashi Nakano ,  Ryuma Sakamoto ,  Junichi Inoue ,  Tetsuya Suzuki

IPC分类号： G11B2110

CPC分类号： G11B21/106 ,  G11B5/5552 ,  H01L41/0993

摘要： An actuator having a simple configuration requiring no high dimensional accuracy, high in positioning accuracy and low in cost, and a head-positioning mechanism using the actuator are disclosed. An actuator according to a first application comprises a shear-type piezoelectric element of predetermined thickness and an opposed electrode formed on two electrodes in spaced relationship on a base member. The opposed electrode is displaced in accordance with the direction of polarization of the shear-type piezoelectric element upon applying a voltage between the two electrodes. The opposed electrode thus constitutes an operating section of the actuator. An actuator according to a second application comprises a movable member arranged on a drive member including a shear-type piezoelectric element on a base member. The drive member includes a plurality of layers of piezoelectric elements polarized in alternately opposite directions perpendicular to the thickness of the devices. A plurality of conductive layers are formed adjacently to the respective layers of the devices to permit voltage application thereto. The movable member can be driven in parallel to the base member upon application of a voltage between the conductive layers. Any one of these actuators can be incorporated as a part of the head actuator to constitute a head-positioning mechanism capable of displacing the head by a minuscule distance independently of the operation of the head actuator.

公开(公告)号：US5880904A

公开(公告)日：1999-03-09

申请号：US406807

申请日：1995-03-20

申请人： Yoshifumi Mizoshita ,  Tomoyoshi Yamada ,  Yasumasa Kuroba ,  Toru Kouhei ,  Takao Sugawara ,  Masaru Matsumoto ,  Hiroyuki Mase ,  Masao Tsunekawa ,  Shinji Koganezawa ,  Keiji Aruga

发明人： Yoshifumi Mizoshita ,  Tomoyoshi Yamada ,  Yasumasa Kuroba ,  Toru Kouhei ,  Takao Sugawara ,  Masaru Matsumoto ,  Hiroyuki Mase ,  Masao Tsunekawa ,  Shinji Koganezawa ,  Keiji Aruga

IPC分类号： G11B5/54 ,  G11B17/028 ,  G11B19/20 ,  G11B21/12 ,  G11B21/22 ,  G11B25/04 ,  G11B33/08 ,  G11B33/12 ,  H02K7/04 ,  H02K7/08 ,  H02K21/24 ,  H02K33/18 ,  H02K41/035 ,  G11B5/012

CPC分类号： G11B33/121 ,  G11B17/028 ,  G11B17/0282 ,  G11B17/0287 ,  G11B19/20 ,  G11B19/2009 ,  G11B21/12 ,  G11B21/22 ,  G11B25/043 ,  G11B33/08 ,  G11B33/122 ,  G11B5/54 ,  H02K21/24 ,  H02K33/18 ,  H02K41/0358 ,  H02K7/04 ,  H02K7/086

摘要： A compact card type disk drive includes a housing (21) for accommodating a disk for storing data, disk drive for rotating the disk, a head assembly for writing and reading data to and from the disk and an electronic circuit including at least an interface circuit (39), the latter three being accommodated in the housing. A connector (42) connected to the electronic circuit is fixed to the outside portion of the housing (21). The electronic circuit preferably contains a read/write circuit (36) and a control circuit (38). The housing (21) preferably includes a lower base (22) and an upper cover (23), and a printed circuit board (14) is disposed along the inner wall of either one, or both, of the base (22) and the cover (23). The outer dimension of the plane of the disk drive is preferably about 85.6 mm.times.54 mm, and typically, the outer thickness is 5 mm. Preferably, one connector (42) is disposed on either one of the minor sides of the housing (21). The connector (42) is disposed at the substantial center of the housing in the direction of its thickness and is fixed to one of the minor sides of the housing (21) which opposes the head assembly with respect to the disk.

摘要翻译： 一种紧凑型卡式磁盘驱动器包括用于容纳用于存储数据的盘的壳体（21），用于旋转盘的盘驱动器，用于向盘进行数据读取和从盘读取数据的头组件和至少包括接口电路 （39），后三个被安置在房屋内。 连接到电子电路的连接器（42）固定到壳体（21）的外部。 电子电路优选地包含读/写电路（36）和控制电路（38）。 壳体（21）优选地包括下基部（22）和上盖（23），并且印刷电路板（14）沿着基座（22）的一个或两个的内壁设置，并且 盖（23）。 磁盘驱动器的平面的外部尺寸优选为约85.6mm×54mm，并且通常外部厚度为5mm。 优选地，一个连接器（42）设置在壳体（21）的任一个次侧上。 连接器（42）沿其厚度方向设置在壳体的大致中心处并且被固定到相对于盘相对于头组件的壳体（21）的一个小侧。

公开(公告)号：US5041935A

公开(公告)日：1991-08-20

申请号：US392499

申请日：1989-08-11

申请人： Keiji Aruga ,  Norihiko Suzuki ,  Tomoyoshi Yamada ,  Hiroshi Maeda ,  Takahiro Imamura

发明人： Keiji Aruga ,  Norihiko Suzuki ,  Tomoyoshi Yamada ,  Hiroshi Maeda ,  Takahiro Imamura

IPC分类号： G11B5/55 ,  H01F7/14

CPC分类号： G11B5/5521 ,  H01F7/145

摘要： A rotary actuator for positioning magnetic heads in a disk drive, comprising a stator assembly and a rotor assembly. An arm assembly having magnetic heads are fixed to the rotor assembly, which rotates back and forth within a limited angle range around a fixed axis of the rotary actuator due to the forces between plural magnets and driving current which flows though flat coils. Two flat coils are aranged on an arcuate inner surface of the stator such that two adjacent vertical parallel portions thereof closely contact with each other. Two flat coils have an electrical connection with a driving source that the currents through the two adjacently parallel portions flow in the same direction. Three permanent magnets are disposed on the rotor surface, the central magnet having a greater lateral width than that of other two side magnets, and a polarity of the central magnet is opposite to that of other magnets. In another embodiment, each of flat coils comprises an inner coil and an outer coil resulting in enhancing the torque of the rotary actuator. Several modifications of coil and permanent magnet arrangement, and other related improvements in the structure thereof are also disclosed.

公开(公告)号：US06538854B2

公开(公告)日：2003-03-25

申请号：US09872037

申请日：2001-06-01

申请人： Shinji Koganezawa ,  Tomoyoshi Yamada ,  Yukihiro Uematsu ,  Tadayoshi Noguchi ,  Hisashi Nakano ,  Ryuma Sakamoto ,  Junichi Inoue ,  Tetsuya Suzuki

发明人： Shinji Koganezawa ,  Tomoyoshi Yamada ,  Yukihiro Uematsu ,  Tadayoshi Noguchi ,  Hisashi Nakano ,  Ryuma Sakamoto ,  Junichi Inoue ,  Tetsuya Suzuki

IPC分类号： G11B2110

CPC分类号： G11B21/106 ,  G11B5/5552 ,  H01L41/0993

摘要： An actuator includes a shear-type piezoelectric element of predetermined thickness and an opposed electrode formed on two electrodes in spaced relationship on a base member. The opposed electrode is displaced in accordance with the direction of polarization of the shear-type piezoelectric element upon applying a voltage between the two electrodes. The opposed electrode thus constitutes an operating section of the actuator. The actuator can be incorporated as a part of the head actuator to constitute a head-positioning mechanism capable of displacing the head by a minuscule distance independently of the operation of the head actuator.

摘要翻译： 致动器包括具有预定厚度的剪切型压电元件和在两个电极上形成的相对电极，在基底构件上间隔开。 相对的电极在施加两个电极之间的电压时根据剪切型压电元件的偏振方向移位。 因此，相对的电极构成致动器的操作部分。 致动器可以作为头部致动器的一部分并入，以构成头部定位机构，该头部定位机构能够独立于头部致动器的操作而使头部移动微小的距离。

公开(公告)号：US6025973A

公开(公告)日：2000-02-15

申请号：US213759

申请日：1998-12-17

申请人： Yoshifumi Mizoshita ,  Tomoyoshi Yamada ,  Yasumasa Kuroba ,  Toru Kouhei ,  Takao Sugawara ,  Masaru Matsumoto ,  Hiroyuki Mase ,  Masao Tsunekewa ,  Shinji Koganezawa ,  Keiji Aruga

发明人： Yoshifumi Mizoshita ,  Tomoyoshi Yamada ,  Yasumasa Kuroba ,  Toru Kouhei ,  Takao Sugawara ,  Masaru Matsumoto ,  Hiroyuki Mase ,  Masao Tsunekewa ,  Shinji Koganezawa ,  Keiji Aruga

IPC分类号： G11B5/54 ,  G11B17/028 ,  G11B19/20 ,  G11B21/12 ,  G11B21/22 ,  G11B25/04 ,  G11B33/08 ,  G11B33/12 ,  H02K7/04 ,  H02K7/08 ,  H02K21/24 ,  H02K33/18 ,  H02K41/035 ,  G11B17/02 ,  G11B23/00

CPC分类号： G11B33/121 ,  G11B17/028 ,  G11B17/0282 ,  G11B17/0287 ,  G11B19/20 ,  G11B19/2009 ,  G11B21/12 ,  G11B21/22 ,  G11B25/043 ,  G11B33/08 ,  G11B33/122 ,  G11B5/54 ,  H02K21/24 ,  H02K33/18 ,  H02K41/0358 ,  H02K7/04 ,  H02K7/086

摘要： A compact card type disk drive includes a housing (21) for accommodating a disk for storing data, a disk drive for rotating the disk, a head assembly for writing and reading data to and from the disk and an electronic circuit including at least an interface circuit (39), the latter three being accommodated in the housing. A connector (42) connected to the electronic circuit is fixed to the outside portion of the housing (21). The electronic circuit preferably contains a read/write circuit (36) and a control circuit (38). The housing (21) preferably includes a lower base (22) and an upper cover (23), and a printed circuit board (14) is disposed along the inner wall of either one, or both, of the base (22) and the cover (23). The outer dimension of the plane of the disk drive is preferably about 85.6 mm.times.54 mm, and typically, the outer thickness is 5 mm. Preferably, one connector (42) is disposed on either one of the minor sides of the housing (21). The connector (42) is disposed at the substantial center of the housing in the direction of its thickness and is fixed to one of the minor sides of the housing (21) which opposes the head assembly with respect to the disk.

摘要翻译： 一种紧凑型卡式磁盘驱动器包括用于容纳用于存储数据的磁盘的壳体（21），用于旋转磁盘的磁盘驱动器，用于向磁盘写入和读取数据的磁头组件以及至少包括接口 电路（39），后者三个被容纳在壳体中。 连接到电子电路的连接器（42）固定到壳体（21）的外部。 电子电路优选地包含读/写电路（36）和控制电路（38）。 壳体（21）优选地包括下基部（22）和上盖（23），并且印刷电路板（14）沿着基座（22）的一个或两个的内壁设置，并且 盖（23）。 磁盘驱动器的平面的外部尺寸优选为约85.6mm×54mm，并且通常外部厚度为5mm。 优选地，一个连接器（42）设置在壳体（21）的任一个次侧上。 连接器（42）沿其厚度方向设置在壳体的大致中心处并且被固定到相对于盘相对于头组件的壳体（21）的一个小侧。

公开(公告)号：US6016237A

公开(公告)日：2000-01-18

申请号：US139765

申请日：1998-08-25

申请人： Yoshifumi Mizoshita ,  Tomoyoshi Yamada ,  Yasumasa Kuroba ,  Toru Kouhei ,  Takao Sugawara ,  Masaru Matsumoto ,  Hiroyuki Mase ,  Masao Tsunekewa ,  Shinji Koganezawa ,  Keiji Aruga

发明人： Yoshifumi Mizoshita ,  Tomoyoshi Yamada ,  Yasumasa Kuroba ,  Toru Kouhei ,  Takao Sugawara ,  Masaru Matsumoto ,  Hiroyuki Mase ,  Masao Tsunekewa ,  Shinji Koganezawa ,  Keiji Aruga

IPC分类号： G11B5/54 ,  G11B17/028 ,  G11B19/20 ,  G11B21/12 ,  G11B21/22 ,  G11B25/04 ,  G11B33/08 ,  G11B33/12 ,  H02K7/04 ,  H02K7/08 ,  H02K21/24 ,  H02K33/18 ,  H02K41/035 ,  G11B33/02

CPC分类号： G11B33/121 ,  G11B17/028 ,  G11B17/0282 ,  G11B17/0287 ,  G11B19/20 ,  G11B19/2009 ,  G11B21/12 ,  G11B21/22 ,  G11B25/043 ,  G11B33/08 ,  G11B33/122 ,  G11B5/54 ,  H02K21/24 ,  H02K33/18 ,  H02K41/0358 ,  H02K7/04 ,  H02K7/086

摘要： A compact card type disk a drive includes a housing (21) for accommodating a disk for storing data, a disk drive for rotating the disk, head assembly for writing and reading data to and from the disk and an electronic circuit including at least an interface circuit (39), the latter three being accommodated in the housing. A connector (42) connected to the electronic circuit is fixed to the outside portion of the housing (21). The electronic circuit preferably contains a read/write circuit (36) and a control circuit (38). The housing (21) preferably includes a lower base (22) and an upper cover (23), and a printed circuit board (14) is disposed along the inner wall of either one, or both, of the base (22) and the cover (23). The outer dimension of the plane of the disk drive is preferably about 85.6 mm.times.54 mm, and typically, the outer thickness is 5 mm. Preferably, one connector (42) is disposed on either one of the minor sides of the housing (21). The connector (42) is disposed at the substantial center of the housing in the direction of its thickness and is fixed to one of the minor sides of the housing (21) which opposes the head assembly with respect to the disk.

摘要翻译： 一种紧凑型卡式盘，驱动器包括用于容纳用于存储数据的盘的壳体（21），用于旋转盘的盘驱动器，用于向和从盘读取数据的头组件和至少包括界面的电子电路 电路（39），后者三个被容纳在外壳中。 连接到电子电路的连接器（42）固定到壳体（21）的外部。 电子电路优选地包含读/写电路（36）和控制电路（38）。 壳体（21）优选地包括下基部（22）和上盖（23），并且印刷电路板（14）沿着基座（22）的一个或两个的内壁设置，并且 盖（23）。 磁盘驱动器的平面的外部尺寸优选为约85.6mm×54mm，并且通常外部厚度为5mm。 优选地，一个连接器（42）设置在壳体（21）的任一个次侧上。 连接器（42）沿其厚度方向设置在壳体的大致中心处并且被固定到相对于盘相对于头组件的壳体（21）的一个小侧。

公开(公告)号：US5764441A

公开(公告)日：1998-06-09

申请号：US636802

申请日：1996-04-23

申请人： Keiji Aruga ,  Yasumasa Kuroba ,  Tomoyoshi Yamada

发明人： Keiji Aruga ,  Yasumasa Kuroba ,  Tomoyoshi Yamada

IPC分类号： G11B21/02 ,  B81B3/00 ,  G11B21/08 ,  G11B5/55

CPC分类号： G11B21/085

摘要： A rotary moving coil actuator in a disk drive selectively positions a read/write head with respect to disk medium. A carriage is pivotable about an axis and has a carriage arm for supporting the head. A pair of magnets, disposed in spaced relationship within a magnetic yoke structure, have spaced flat faces perpendicular to the axis and define a gap therebetween. A flat coil structure, comprising one or a pair of flat coils, is attached to the carriage and disposed at least in part within the gap between the opposing flat faces of the magnets so as to be movable along a stroke of movement relatively thereto. The flat coil structure in cooperation with the magnets, generates a driving force in a direction approximately parallel to a first line which is perpendicular to the axis and passes through the axis and toward the read/write head and thereby substantially perpendicular to the seek direction of the head.

摘要翻译： 盘驱动器中的旋转运动线圈致动器相对于盘介质选择性地定位读/写头。 滑架可绕轴线转动并且具有用于支撑头部的托架臂。 在磁轭结构内以间隔关系设置的一对磁体具有垂直于该轴线的间隔开的平坦表面，并且在它们之间形成间隙。 包括一个或一对扁平线圈的扁平线圈结构被附接到托架并且至少部分地设置在磁体的相对平坦表面之间的间隙内，以便能够相对于其移动。 与磁体协调的扁平线圈结构在大致平行于垂直于轴线的第一线的方向上产生驱动力，并且通过轴线并朝向读/写头，从而基本上垂直于读取方向 头部。

公开(公告)号：US5519270A

公开(公告)日：1996-05-21

申请号：US106723

申请日：1993-08-16

申请人： Tomoyoshi Yamada ,  Yoshifumi Mizoshita ,  Keiji Aruga

发明人： Tomoyoshi Yamada ,  Yoshifumi Mizoshita ,  Keiji Aruga

IPC分类号： G11B19/20 ,  G11B25/04 ,  H02K1/02 ,  H02K1/14 ,  H02K1/18 ,  H02K3/26 ,  H02K3/52 ,  H02K5/124 ,  H02K15/02 ,  H02K21/12 ,  H02K21/14 ,  H02K21/22 ,  H02K7/14 ,  G11B17/08 ,  H02K1/12

CPC分类号： H02K3/522 ,  G11B19/2009 ,  G11B25/043 ,  H02K1/146 ,  H02K1/148 ,  H02K15/022 ,  H02K21/12 ,  H02K3/26 ,  H02K1/02 ,  H02K1/18 ,  H02K21/14 ,  H02K21/22 ,  H02K2201/12 ,  H02K2203/03 ,  H02K2203/12 ,  H02K5/124

摘要： A spindle motor includes a permanent magnet multipolarized in a circular direction of the permanent magnet. The permanent magnet generates magnetic fluxes in a radial direction of the spindle motor. A core assembly has core pieces, the core pieces respectively including first portions are circularly arranged and face the permanent magnet via a gap, and second portions guide magnetic fluxes in parallel with a rotation axis of the spindle motor. Windings are turned around the second portions of the core assembly and have axes of the windings extending in parallel with the rotation axis of the spindle motor. A yoke magnetically couples the core pieces with each other.

摘要翻译： 主轴电动机包括在永磁体的圆周方向上多极化的永磁体。 永久磁铁在主轴电动机的径向方向产生磁通。 芯组件具有芯片，分别包括第一部分的芯片部分被圆形布置并且经由间隙面对永磁体，并且第二部分引导与主轴电动机的旋转轴线平行的磁通量。 绕组绕着芯组件的第二部分转动，并且绕组的轴线与主轴电机的旋转轴线平行延伸。 磁轭将磁芯彼此磁耦合。