利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

78 条记录 (耗时 0.031 秒)

    Transmitter driver circuit in high-speed serial communications system
    31.
    发明授权
    Transmitter driver circuit in high-speed serial communications system 有权
    变频器驱动电路在高速串行通信系统中的应用

    公开(公告)号：US07795919B2

    公开(公告)日：2010-09-14

    申请号：US11494689

    申请日：2006-07-28

    申请人： Hideo Fujiwara

    发明人： Hideo Fujiwara

    IPC分类号： H03K19/00 ,  H03K19/096 ,  H03K17/16

    CPC分类号： G06F13/4086 ,  Y02D10/14 ,  Y02D10/151

    摘要： A driver circuit in a high-speed serial communications system changes an input data signal into a differential signal. A first output terminal is connected to a predetermined power supply voltage through a first pullup resistance circuit and to a grounding voltage through a first pulldown resistance circuit. A second output terminal is connected to the predetermined power supply voltage through a second pull-up resistance circuit and to the grounding voltage through a second pulldown resistance circuit. Resistances of the first and second pull-up resistance circuits and resistances of the first and second pulldown resistance circuits are changed according to the input data signal.

    摘要翻译： 高速串行通信系统中的驱动电路将输入数据信号改变为差分信号。 第一输出端子通过第一上拉电阻电路连接到预定的电源电压，并通过第一下拉电阻电路连接到接地电压。 第二输出端子通过第二上拉电阻电路连接到预定电源电压，并通过第二下拉电阻电路连接到接地电压。 第一和第二上拉电阻电路的电阻和第一和第二下拉电阻电路的电阻根据输入数据信号而改变。

    CPP spin-valve device
    32.
    发明授权
    CPP spin-valve device 有权
    CPP自旋阀装置

    公开(公告)号：US06560077B2

    公开(公告)日：2003-05-06

    申请号：US09480132

    申请日：2000-01-10

    申请人： Hideo Fujiwara ,  Gary J. Mankey

    发明人： Hideo Fujiwara ,  Gary J. Mankey

    IPC分类号： G11B539

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B2005/3996 ,  G11C11/16 ,  G11C2213/81 ,  H01F10/324

    摘要： A spin-valve device of a CPP structure which has a high resistance, and which generates a high output signal with low current. The CPP spin-valve device including a spin-valve element having a substrate and a layered structure formed on the substrate. The layered structure includes a first thin film layer of ferromagnetic material, a second thin film layer of ferromagnetic material, and a thin non-magnetic layer structure separating the first and second layers. One of the first and second thin film layers is defined as a free layer and the other layer is defined as a pinned layer, where the free layer has a direction of magnetization that is easier to change than a direction of magnetization of the pinned layer by application of a magnetic field. The non-magnetic layer structure includes a conducting part and insulating part, with the conduction part having an area that is smaller than an area of the free layer. The device further includes a device for producing a current flow through the spin-valve element and a field sensor configured to sense variations in resistance of the spin-valve element due to a difference in rotation of the magnetizations in the free layer and the pinned layer caused by an applied magnetic field.

    摘要翻译： 具有高电阻并且以低电流产生高输出信号的CPP结构的自旋阀装置。 CPP自旋阀装置包括具有衬底的自旋阀元件和形成在衬底上的层状结构。 层状结构包括铁磁材料的第一薄膜层，铁磁材料的第二薄膜层和分离第一和第二层的薄的非磁性层结构。 第一和第二薄膜层之一被定义为自由层，另一层被定义为钉扎层，其中自由层具有比被钉扎层的磁化方向更容易变化的磁化方向， 应用磁场。 非磁性层结构包括导电部分和绝缘部分，导电部分的面积小于自由层的面积。 该装置还包括用于产生通过自旋阀元件的电流的装置和被配置为感测由于自由层和钉扎层中的磁化的旋转差异而导致的自旋阀元件的电阻的变化的场传感器 由施加的磁场引起。

    Soft magnetic materials comprising 9 to 15 atomic percent carbon atoms
    34.
    发明授权
    Soft magnetic materials comprising 9 to 15 atomic percent carbon atoms 失效
    包含9至15原子％碳原子的软磁性材料

    公开(公告)号：US5059337A

    公开(公告)日：1991-10-22

    申请号：US247074

    申请日：1988-09-21

    申请人： Tsuyoshi Maro ,  Osamu Kitakami ,  Hideo Fujiwara ,  Kunio Wakai

    发明人： Tsuyoshi Maro ,  Osamu Kitakami ,  Hideo Fujiwara ,  Kunio Wakai

    IPC分类号： C04B35/26 ,  C23C14/06 ,  H01F1/24 ,  H01F1/26 ,  H01F41/22

    CPC分类号： C23C14/06 ,  C04B35/26 ,  H01F1/24 ,  H01F1/26 ,  H01F41/22

    摘要： The present invention provides a novel soft magnetic material superior in corrosion resistance which contains (a) a ferromagnetic metal and (b) a carbide of a ferromagnetic metal and/or a silicide of a ferromagnetic metal with at least one of (c) an amorphous carbon and/or an amorphous silicon and (d) a hydrocarbon polymer and/or a silicone polymer and which contains carbon atoms in an amount of 15 atomic % or less, preferably 9-15 atomic %, preferably prepared by the simultaneous vapor deposition of a ferromagnetic metal and a polymer.

    摘要翻译： 本发明提供一种耐腐蚀性优异的新型软磁材料，它含有（a）铁磁金属和（b）铁磁性金属的碳化物和/或铁磁性金属的硅化物，其具有以下中的至少一种：（c） 碳和/或非晶硅，和（d）烃聚合物和/或硅氧烷聚合物，并且其含有15原子％或更少，优选9-15原子％的碳原子，优选通过同时气相沉积 铁磁金属和聚合物。

    Composite magnetic head
    35.
    发明授权
    Composite magnetic head 失效
    复合磁头

    公开(公告)号：US5057955A

    公开(公告)日：1991-10-15

    申请号：US419104

    申请日：1989-10-10

    申请人： Osamu Inagoya ,  Takeshi Tottori ,  Kazunari Nakagawa ,  Hirosuke Mikami ,  Hideo Fujiwara

    发明人： Osamu Inagoya ,  Takeshi Tottori ,  Kazunari Nakagawa ,  Hirosuke Mikami ,  Hideo Fujiwara

    IPC分类号： G11B5/193 ,  G11B5/265

    CPC分类号： G11B5/2655 ,  G11B5/193

    摘要： A composite magnetic head having a recording/playback head and an erasing head combined in one unit through a nonmagnetic material is constructed such that at least one of two core halves constituting the erasing head adjacent to the recording and reproducing head is made of single crystal ferrite, a plane (100) of the single crystal ferrite is substantially parallel to a principal magnetic path-forming plane, and an angle .theta. between an orientation existing in the plane (100) and an operating gap (magnetic gap)-forming plane is in the range of 10.degree.-40.degree. or 80.degree.-120.degree.. The composite magnetic head thus constructed can be made to have a reduced distance between magnetic gaps of both heads so as to be suited for being attached to the compact high-density recording and reproducing apparatus while eliminating crosstalk.

    摘要翻译： 具有通过非磁性材料组合在一个单元中的记录/重放头和擦除头的复合磁头被构造成使得构成与记录和再现头相邻的擦除头的两个半核中的至少一个由单晶铁氧体 ，单晶铁氧体的平面（100）基本上平行于主磁路形成平面，并且存在于平面（100）中的取向<100>与形成操作间隙（磁隙）的角度θ 平面在10°-40°或80°-120°的范围内。 这样构成的复合磁头可以使两个磁头的磁隙之间的距离减小，从而适于附着到紧凑的高密度记录和再现装置上，同时消除串扰。

    Magnetic recording medium
    36.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4895758A

    公开(公告)日：1990-01-23

    申请号：US777017

    申请日：1985-09-17

    申请人： Akito Sakemoto ,  Hideo Fujiwara ,  Kunio Mizushima ,  Akira Miyake

    发明人： Akito Sakemoto ,  Hideo Fujiwara ,  Kunio Mizushima ,  Akira Miyake

    IPC分类号： G11B5/012 ,  G11B5/127 ,  G11B5/70 ,  G11B5/706 ,  G11B5/714

    CPC分类号： G11B5/70673 ,  G11B5/012 ,  G11B5/1276 ,  G11B5/70 ,  G11B5/70615 ,  G11B5/714 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/265

    摘要： A magnetic recording medium suitable for high density recording comprising a non-magnetic substrate and a magnetic layer which contains a non-magnetic binder and ferromagnetic powder dispersed therein formed on said substrate, the coercive force of the magnetic layer being from 1,400 to 2,000 oersteds, the residual magnetic flux density being at least 1,100 gausses and a thickness of the layer being at least 0.5 .mu.m, which effectively works when it is used together with a magnetic head, a part of which near a magnetic gap, made of a magnetic material having saturation magnetic flux density of at least 7,000 gausses and which has a magnetic gap length of 0.15 to 0.4 .mu.m.

    摘要翻译： 一种适用于高密度记录的磁记录介质，包括非磁性基底和磁性层，该磁性层含有分散于其中的非磁性粘结剂和铁磁粉末，所述磁性层的矫顽力为1400至2,000奥斯特， 剩余磁通密度至少为1100高斯，该层的厚度为至少0.5μm，当与磁头一起使用的磁头（磁性部分靠近磁隙）与磁性材料一起使用时，其有效地起作用 具有至少7,000高斯的饱和磁通密度，其磁隙长度为0.15至0.4μm。

    Composite type magnetic head for recording and reproducing high frequency signals
    38.
    发明授权
    Composite type magnetic head for recording and reproducing high frequency signals 失效
    用于记录和再现高频信号的复合型磁头

    公开(公告)号：US4656547A

    公开(公告)日：1987-04-07

    申请号：US608407

    申请日：1984-05-09

    申请人： Noriyuki Kumasaka ,  Hideo Fujiwara ,  Shigekazu Otomo ,  Takeo Yamashita ,  Shinji Takayama ,  Noritoshi Saito ,  Mitsuhiro Kudo

    发明人： Noriyuki Kumasaka ,  Hideo Fujiwara ,  Shigekazu Otomo ,  Takeo Yamashita ,  Shinji Takayama ,  Noritoshi Saito ,  Mitsuhiro Kudo

    IPC分类号： G11B5/127 ,  G11B5/187 ,  G11B5/23 ,  G11B5/245 ,  G11B5/147 ,  G11B5/17

    CPC分类号： G11B5/1874

    摘要： There is provided a structure of a composite type magnetic head and its manufacturing method. The composite type magnetic head comprises: two high permeability ferrite blocks with projections having nearly edged sections formed thereon; magnetic films having a high saturation flux density deposited on the side faces of the projections, the magnetic films confronting each other via a functional gap near front ends of said projections; guard films deposited over the magnetic films comprising a non-magnetic material; and non-magnetic materials filled on the guard films up to side face of the coil. This magnetic head exhibits excellent recording and reproducing characteristics. The contour effect is negligibly small. The reaction between the magnetic film and the non-magnetic material is prevented by the guard film.

    摘要翻译： 提供复合型磁头的结构及其制造方法。 复合型磁头包括：两个高磁导率铁氧体块，其上形成有几乎边缘的突起; 沉积在突起的侧面上的具有高饱和磁通密度的磁性膜通过在所述突起的前端附近的功能间隙相互面对; 保护膜沉积在包含非磁性材料的磁性膜上; 以及填充在保护膜上的非磁性材料直到线圈的侧面。 该磁头具有出色的记录和再现特性。 轮廓效应可忽略不计。 保护膜可防止磁性膜与非磁性材料之间的反应。

    Perpendicular magnetic recording and reproducing thin film head
    39.
    发明授权
    Perpendicular magnetic recording and reproducing thin film head 失效
    垂直磁记录和再现薄膜头

    公开(公告)号：US4636897A

    公开(公告)日：1987-01-13

    申请号：US539386

    申请日：1983-10-06

    申请人： Hitoshi Nakamura ,  Kasuo Shiiki ,  Isamu Yuito ,  Yoshihiro Shiroishi ,  Hideo Fujiwara ,  Kiminari Shinagawa ,  Akemi Iijima

    发明人： Hitoshi Nakamura ,  Kasuo Shiiki ,  Isamu Yuito ,  Yoshihiro Shiroishi ,  Hideo Fujiwara ,  Kiminari Shinagawa ,  Akemi Iijima

    IPC分类号： G11B5/31 ,  G11B5/127 ,  G11B5/23 ,  G11B5/147 ,  G11B5/187 ,  G11B5/235

    CPC分类号： G11B5/1278

    摘要： A perpendicular magnetic recording and reproducing thin film head of a structure excellent in magnetic characteristics and easy of fabrication, wherein a lower magnetic layer disposed on a flat nonmagnetic substrate is used as a main magnetic pole, a first insulator layer is formed on the main magnetic pole, a conductor for a coil and a second insulator layer are disposed on the first insulator layer, and an upper magnetic layer which lies in contact with the lower magnetic layer through the first insulator layer at one end thereof and directly at the other end thereof and which overlies the second insulator layer in a part thereof other than both the ends is disposed and used as an auxiliary magnetic pole.

    摘要翻译： 磁性特性优良，制造容易的结构的垂直磁记录再生薄膜头，其特征在于，使用设置在平面非磁性基板上的下部磁性层作为主磁极，在主磁体上形成第一绝缘体层 极，用于线圈的导体和第二绝缘体层设置在第一绝缘体层上，并且上磁性层通过第一绝缘体层在其一端直接与下磁性层接触，并且在另一端处 并且在除了两端的部分中的第二绝缘体层之外的位置被布置并用作辅助磁极。