公开(公告)号：US06501610B1

公开(公告)日：2002-12-31

申请号：US08596471

申请日：1996-02-05

申请人： Takao Sugawara ,  Umeo Oshio ,  Takenori Ohshima ,  Yoshifumi Mizoshita ,  Keiji Aruga

发明人： Takao Sugawara ,  Umeo Oshio ,  Takenori Ohshima ,  Yoshifumi Mizoshita ,  Keiji Aruga

IPC分类号： G11B509

CPC分类号： G11B20/10055 ,  G11B5/09 ,  G11B20/10009 ,  G11B20/1258

摘要： A detection circuit in a magnetic recording and playback apparatus which uses partial response and the maximum likelihood method, in which neither the size of the detection circuit nor the power consumption increase when the partial response order n increases. In this detection circuit, in the circuit that detects a signal read out from a head, either a plurality of equalizers for different target equalization waveforms, or a single variable target equalizer is provided. A detector for the waveform output from an equalizer is connected in series with the detector. A plurality of combinations, each formed by an equalizer and a detector, is connected in parallel to the output of a filter, the outputs of the combinations of equalizers and detectors being input to a switching circuit, which is controlled by a switching control means. The switching control means controls the switching circuit so that just one of the combinations of equalizer and detectors is selected as the detector output. If a variable target equalizer, which is capable of generating two or more different types of equalization waveforms, is used as the equalizer, it is possible to reduce the number of equalizers to one.

摘要翻译： 使用部分响应和最大似然方法的磁记录和重放装置中的检测电路，其中当部分响应顺序n增加时，检测电路的尺寸和功耗都不会增加。 在该检测电路中，在检测从头读出的信号的电路中，提供用于不同的目标均衡波形的多个均衡器或单个可变目标均衡器。 用于从均衡器输出的波形的检测器与检测器串联连接。 由均衡器和检测器形成的多个组合与滤波器的输出并联连接，均衡器和检测器组合的输出被输入到由开关控制装置控制的开关电路。 开关控制装置控制开关电路，使得仅选择均衡器和检测器的组合中的一个作为检测器输出。 如果能够产生两种或多种不同类型的均衡波形的可变目标均衡器被用作均衡器，则可以将均衡器的数量减少到1。

公开(公告)号：US5287385A

公开(公告)日：1994-02-15

申请号：US810069

申请日：1991-12-19

申请人： Takao Sugawara ,  Yoshifumi Mizoshita ,  Hiroshi Mutoh ,  Kiichirou Kasai ,  Takenori Ohshima

发明人： Takao Sugawara ,  Yoshifumi Mizoshita ,  Hiroshi Mutoh ,  Kiichirou Kasai ,  Takenori Ohshima

IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B20/18 ,  H03M13/23 ,  H03M13/41 ,  H03H7/30

CPC分类号： G11B20/10009 ,  H03M13/41

摘要： A Viterbi decoding system includes a characteristic estimator for estimating a characteristic of a system, and an equalizer for receiving an input signal from the system and for equalizing a waveform of the input signal so that an equalized waveform of the input signal is varied based on the characteristic of the system estimated by the characteristic estimator. A Viterbi decoder generates an output signal showing a maximum-likelihood path by using the equalized waveform of the input signal from the equalizer.

摘要翻译： 维特比解码系统包括用于估计系统的特性的特性估计器和用于从系统接收输入信号并用于均衡输入信号的波形的均衡器，使得输入信号的均衡波形基于 由特征估计器估计的系统特征。 维特比解码器通过使用来自均衡器的输入信号的均衡波形来产生表示最大似然路径的输出信号。

公开(公告)号：US5608592A

公开(公告)日：1997-03-04

申请号：US462751

申请日：1995-06-05

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： G11B21/12 ,  G11B25/04 ,  H02K7/04 ,  H02K7/08 ,  H02K21/24 ,  H02K41/035 ,  G11B21/22 ,  G11B5/54

CPC分类号： G11B21/12 ,  G11B25/043 ,  H02K21/24 ,  H02K41/0358 ,  H02K7/04 ,  H02K7/086

摘要： A retracting assembly produces a constant torque, in a data zone of a magnetic disk, which is greater than static friction of a bearing for a rotary actuator. However, in a parking zone on an outer portion of the magnetic disk, the retracting assembly generates a torque which suddenly increases so that a large holding torque is obtained and a magnetic head is reliably locked.

摘要翻译： 回缩组件在​​磁盘的数据区域中产生恒定的扭矩，其大于用于旋转致动器的轴承的静摩擦力。 然而，在磁盘外部的停车区域中，缩回组件产生突然增加的转矩，从而获得大的保持转矩并且可靠地锁定磁头。

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：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：US5349486A

公开(公告)日：1994-09-20

申请号：US954951

申请日：1992-09-29

申请人： Masaharu Sugimoto ,  Keiji Aruga ,  Tomoyoshi Yamada ,  Takahiro Imamura ,  Yoshifumi Mizoshita

发明人： Masaharu Sugimoto ,  Keiji Aruga ,  Tomoyoshi Yamada ,  Takahiro Imamura ,  Yoshifumi Mizoshita

IPC分类号： G11B5/55 ,  G11B33/08 ,  G11B5/012 ,  F16M13/00 ,  G11B33/14

CPC分类号： G11B5/5582 ,  G11B33/08

摘要： A magnetic disk storage apparatus comprising a rotary actuator which prevents head positioning error resulting from vibration and impact. Since head positioning error is generated when the enclosure makes rotating movement due to translational vibration input due to vibration, a vibration proof mechanism consisting of a plurality of vibration proof supporting members are provided between the enclosure and frame. The plural vibration proof supporting members are disposed so that the linear moment around the gravity center of the enclosure is balanced against translational external force applied to the enclosure.

摘要翻译： 一种磁盘存储装置，包括防止由振动和冲击引起的头部定位误差的旋转致动器。 由于当由于振动而导致由于平移振动输入引起的旋转运动时产生磁头定位误差，所以在外壳和框架之间设置由多个防振支撑构件构成的防振机构。 多个防振支撑构件被设置成围绕围绕重心的线性力矩与施加到外壳的平移外力平衡。

公开(公告)号：US4967293A

公开(公告)日：1990-10-30

申请号：US228942

申请日：1988-08-05

申请人： Keiji Aruga ,  Yoshifumi Mizoshita ,  Masahito Iwatsubo ,  Toshifumi Hatagami

发明人： Keiji Aruga ,  Yoshifumi Mizoshita ,  Masahito Iwatsubo ,  Toshifumi Hatagami

IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B33/14

CPC分类号： G11B33/14 ,  G11B5/5565 ,  G11B5/59655

摘要： A magnetic disk storage apparatus in which a plurality of magnetic head positioners are independently driven with respect to each other. A housing having a sensor secured thereto indirectly senses mechanical vibration of a magnetic disk and issues a sense signal. The mechanical vibration is inevitably caused by a seek operation of a selected magnetic head positioner. Based on the sense signal, a compensating signal is generated in a mechanical vibration follow-up system disposed in the apparatus. The compensating signal is input to a coil of a driving motor of non-selected magnetic head positioners such that the effect of the mechanical vibration on the other positioners is cancelled. Thus, magnetic heads supported by the other positioners do not become off-track.

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。

公开(公告)号：US5112147A

公开(公告)日：1992-05-12

申请号：US650271

申请日：1991-02-04

申请人： Takahiro Imamura ,  Yoshifumi Mizoshita ,  Keiji Aruga

发明人： Takahiro Imamura ,  Yoshifumi Mizoshita ,  Keiji Aruga

IPC分类号： G11B19/20 ,  G11B25/04 ,  G11B33/14

CPC分类号： G11B33/1433 ,  F16C35/077 ,  G11B19/2009 ,  G11B25/043 ,  F16C19/54

摘要： A rotating support apparatus in a disk storage device is provided with a stationary shaft, ball bearings rotatably fitted on the stationary shaft, a rotatable member rotatably supported by and on the ball bearings, and buffer rings superimposed between the associated ball bearings and the rotatable member to absorb a thermal deformation of the rotatable member due to a change in a temperature. The buffer rings have a same coefficient of linear expansion as that of the material of which the rotatable member is made, and each of the buffer rings is in contact, at two points of the outer inner surfaces thereof, with the rotatable member or outer races of the ball bearings, and at one point of the inner or outer surface thereof, with the associated ball bearing or the inner surface of the hub, respectively.