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1. 发明申请

US20050128618A1 Overshoot current phase/amplitude control for hard disk drive write current 失效
公开(公告)号：US20050128618A1
公开(公告)日：2005-06-16
申请号：US11041228
申请日：2005-01-25
申请人： Hiroshi Ikekame , Takeo Yamashita
发明人： Hiroshi Ikekame , Takeo Yamashita
IPC分类号： G11B5/09 , G11B5/00 , G11B5/012 , G11B5/02 , G11B20/10
CPC分类号： G11B5/012 , G11B5/02 , G11B20/10009 , G11B2005/0013
摘要： Devices and methods for generating a magnetic head-specific overshoot current which is combined with an alternating current waveform into a write current used by the magnetic head to store information on a magnetic medium. A processor analyzes the frequency of incoming write data and retrieves from a data table of an overshoot current amplitude and an overshoot current phase. This amplitude and phase information is sent to an overshoot current generator to generate an overshoot current that is responsive to the dynamic impedance properties of a magnetic write head during operation. The data table may have information related to one or many write heads, and the data table may be further subdivided based on additional dynamic characteristics of a write head that may affect the impedance thereof.

2. 发明授权

US06870697B2 Overshoot current phase/amplitude control for hard disk drive write current 失效
标题翻译：过冲电流相位/幅度控制硬盘驱动器写入电流
公开(公告)号：US06870697B2
公开(公告)日：2005-03-22
申请号：US10457473
申请日：2003-06-10
申请人： Hiroshi Ikekame , Takeo Yamashita
发明人： Hiroshi Ikekame , Takeo Yamashita
IPC分类号： G11B5/09 , G11B5/00 , G11B5/012 , G11B5/02 , G11B20/10
CPC分类号： G11B5/012 , G11B5/02 , G11B20/10009 , G11B2005/0013
摘要： Devices and methods for generating a magnetic head-specific overshoot current which is combined with an alternating current waveform into a write current used by the magnetic head to store information on a magnetic medium. A processor analyzes the frequency of incoming write data and retrieves from a data table of an overshoot current amplitude and an overshoot current phase. This amplitude and phase information is sent to an overshoot current generator to generate an overshoot current that is responsive to the dynamic impedance properties of a magnetic write head during operation. The data table may have information related to one or many write heads, and the data table may be further subdivided based on additional dynamic characteristics of a write head that may affect the impedance thereof.
摘要翻译：用于产生磁头特定过冲电流的装置和方法，其将交流电波组合成由磁头用于在磁介质上存储信息的写入电流。处理器分析输入写入数据的频率，并从数据表中检索过冲电流幅度和过冲电流相位。该幅度和相位信息被发送到过冲电流发生器以产生响应于操作期间磁写头的动态阻抗特性的过冲电流。数据表可以具有与一个或多个写入头相关的信息，并且可以基于可能影响其阻抗的写入头的附加动态特性来进一步细分数据表。

3. 发明授权

US07154687B2 Overshoot current phase/amplitude control for hard disk drive write current 失效
公开(公告)号：US07154687B2
公开(公告)日：2006-12-26
申请号：US11041228
申请日：2005-01-25
申请人： Hiroshi Ikekame , Takeo Yamashita
发明人： Hiroshi Ikekame , Takeo Yamashita
IPC分类号： G11B5/09
CPC分类号： G11B5/012 , G11B5/02 , G11B20/10009 , G11B2005/0013
摘要： Devices and methods for generating a magnetic head-specific overshoot current which is combined with an alternating current waveform into a write current used by the magnetic head to store information on a magnetic medium. A processor analyzes the frequency of incoming write data and retrieves from a data table of an overshoot current amplitude and an overshoot current phase. This amplitude and phase information is sent to an overshoot current generator to generate an overshoot current that is responsive to the dynamic impedance properties of a magnetic write head during operation. The data table may have information related to one or many write heads, and the data table may be further subdivided based on additional dynamic characteristics of a write head that may affect the impedance thereof.

4. 发明授权

US07245019B2 Semiconductor device with improved wiring arrangement utilizing a projecting portion and a method of manufacturing the same 有权
标题翻译：具有利用突出部分的改进的布线布置的半导体器件及其制造方法
公开(公告)号：US07245019B2
公开(公告)日：2007-07-17
申请号：US10647373
申请日：2003-08-26
申请人： Tomoo Murata , Shinobu Yabuki , Takeo Yamashita
发明人： Tomoo Murata , Shinobu Yabuki , Takeo Yamashita
IPC分类号： H01L23/52
CPC分类号： H01L27/118 , H01L23/528 , H01L2924/0002 , H01L2924/00
摘要： In a method of manufacturing a semiconductor device having a first wiring extending in a first direction and a second wiring connected to the first wiring through a connection and extending in a second direction orthogonal to the first direction, the second wiring having a surplus portion projecting from the connection in a direction opposite to the second direction, the first and second wirings are arranged such that a center of the connection is offset in the second direction from a center of the first wiring, and a projecting portion of the first wiring is disposed under the connection.
摘要翻译：在制造具有沿第一方向延伸的第一布线的半导体器件的方法和通过连接与第一布线连接并沿与第一方向正交的第二方向延伸的第二布线的方法中，第二布线具有从在与第二方向相反的方向上的连接中，第一和第二布线布置成使得连接的中心在距第一布线的中心的第二方向偏移，并且第一布线的突出部分设置在连接。

5. 发明授权

US4803338A Magnetic head having improved track width narrowing grooves 失效
标题翻译：磁头具有改善的轨道宽度变窄槽
公开(公告)号：US4803338A
公开(公告)日：1989-02-07
申请号：US777
申请日：1987-01-06
申请人： Noriyuki Kumasaka , Shigekazu Otomo , Takeo Yamashita , Hideo Zama , Juichi Morikawa
发明人： Noriyuki Kumasaka , Shigekazu Otomo , Takeo Yamashita , Hideo Zama , Juichi Morikawa
IPC分类号： G11B5/23 , G11B5/127 , G11B5/147 , G11B5/187 , G11B5/21 , G11B5/22 , G11B5/25
CPC分类号： G11B5/21 , G11B5/187
摘要： In a magnetic head employing a metallic ferromagnetic material for portions defining a transducing gap, an oxide film or carbide film and a nonmagnetic metal film are provided in this order on each of track width narrowing grooves, and glass is packed on the nonmagnetic metal film, thereby preventing the deteriorations of magnetic characteristics ascribable to the reaction between the metallic ferromagnetic material and the glass and the production of bubbles ascribable to the reaction between the protective films and the glass, and to achieve the enhancements of recording and reproducing characteristics, the prevention of damages to a recording medium surface, the increase of a head lifetime and the rise of the available percentage of manufacture of the heads. When a glass film is further provided on the nonmagnetic metal film and the glass is packed thereon, more excellent effects are achieved.
摘要翻译：在用于限定换能间隙的部分的金属铁磁材料的磁头中，依次在每个轨道宽度变窄槽上设置氧化膜或碳化物膜和非磁性金属膜，玻璃填充在非磁性金属膜上，从而防止归因于金属铁磁材料和玻璃之间的反应的磁特性的劣化以及由于保护膜和玻璃之间的反应引起的气泡的产生，并且为了实现记录和再现特性的增强，防止对记录介质表面的损坏，头部寿命的增加和头部制造的可用百分比的上升。当在非磁性金属膜上进一步设置玻璃膜并且玻璃被包装在其上时，获得更好的效果。

6. 发明授权

US4774616A Magnetic head having an integrated recording and playback head and an erasure head 失效
标题翻译：具有集成的记录和回放头和擦除头的磁头
公开(公告)号：US4774616A
公开(公告)日：1988-09-27
申请号：US694386
申请日：1984-12-04
申请人： Noriyuki Kumasaka , Hideo Fujiwara , Shigekazu Otomo , Takeo Yamashita , Noritoshi Saito , Mitsuhiro Kudo
发明人： Noriyuki Kumasaka , Hideo Fujiwara , Shigekazu Otomo , Takeo Yamashita , Noritoshi Saito , Mitsuhiro Kudo
IPC分类号： G11B5/31 , G11B5/265 , G11B5/16 , G11B5/22
CPC分类号： G11B5/2651 , G11B5/2655
摘要： The present invention relates to a magnetic head, which can form guard bands on a magnetic recording medium and which is especially suitable for magnetic discs, and a fabrication process thereof. The magnetic core of the present invention includes a recording and reproduction head core (31) and an erasure head core (32) which is integrally joined in series to the head core (31) for forming guard bands. Magnetic circuits are constructed of metallic magnetic materials (34), (34'), (35) and (35') formed on non-magnetic members (33) and (33'). As a result, a recording medium having high coercive forces can be recorded while the track width is reduced and the fabrication is facilitated with a high accuracy.
摘要翻译： PCT No.PCT / JP84 / 00159 Sec。 371日期1984年12月4日第 102（e）日期1984年12月4日PCT提交1984年4月2日PCT公布。公开号WO84 / 03984 日期：1984年10月11日。磁头技术领域本发明涉及一种能够在磁记录介质上形成保护带并且特别适用于磁盘的磁头及其制造方法。本发明的磁芯包括记录和再现头芯（31）和擦除头芯（32），它与头芯（31）串联成一体，用于形成防护带。磁路由形成在非磁性构件（33）和（33'）上的金属磁性材料（34），（34'），（35）和（35'）构成。结果，可以记录具有高矫顽力的记录介质，同时减小轨道宽度并且以高精度促进制造。

7. 发明授权

US4769729A Magnetic head having ferromagnetic amorphous alloy multi-layered film 失效
标题翻译：磁头具有铁磁性非晶合金多层膜
公开(公告)号：US4769729A
公开(公告)日：1988-09-06
申请号：US872287
申请日：1986-06-10
申请人： Noriyuki Kumasaka , Shigekazu Otomo , Takeo Yamashita , Noritoshi Saito
发明人： Noriyuki Kumasaka , Shigekazu Otomo , Takeo Yamashita , Noritoshi Saito
IPC分类号： G11B5/127 , G11B5/133 , G11B5/147 , G11B5/23 , H01F10/12 , H01F10/13 , H01F10/30 , G11B5/16
CPC分类号： G11B5/147 , G11B5/127
摘要： A magnetic head includes ferromagnetic amorphous alloy multi-layer films each composed of an alternate lamination of ferromagnetic amorphous alloy layers and magnetic spacer layers. The thickness of each ferromagnetic amorphous alloy layer is of 1 .mu.m to 10 .mu.m. The thickness of each magnetic spacer layer is of 0.01 .mu.m to 0.2 .mu.m. The ferromagnetic amorphous alloy multi-layer films constitute at least parts of the head core.
摘要翻译：磁头包括铁磁非晶合金多层膜，每层由铁磁性非晶合金层和磁性间隔层的交替叠层构成。每个铁磁非晶合金层的厚度为1μm至10μm。每个磁性间隔层的厚度为0.01μm至0.2μm。铁磁非晶合金多层膜构成头芯的至少一部分。

8. 发明授权

US4731683A Magnetic recording and reproducing system with composite magnetic head 失效
标题翻译：具有复合磁头的磁记录和再现系统
公开(公告)号：US4731683A
公开(公告)日：1988-03-15
申请号：US724688
申请日：1985-04-19
申请人： Shigekazu Otomo , Noriyuki Kumasaka , Takeo Yamashita , Juichi Morikawa , Takayuki Kobayashi , Mitsuhiro Kudo
发明人： Shigekazu Otomo , Noriyuki Kumasaka , Takeo Yamashita , Juichi Morikawa , Takayuki Kobayashi , Mitsuhiro Kudo
IPC分类号： G11B5/02 , G11B5/127 , G11B5/187 , G11B5/133
CPC分类号： G11B5/1875 , G11B5/1274
摘要： The invention discloses a magnetic recording and reproducing system using a composite magnetic head whose surface facing a magnetic recording medium is composed primarily of a ferromagnetic metal and a high permeability ferrite single crystal, and which has a region close to a gap and composed of the ferromagnetic metal, wherein the composite magnetic head is arranged in such a fashion that the {110} plane of the high permeability ferrite single crystal is made to substantially coincide with a plane forming a principal magnetic circuit of the composite magnetic head, that the direction lying inside the {110} plane is inclined at an angle of from 15.degree. to 75.degree. with respect to a direction perpendicular to the surface facing the magnetic recording medium, and that the magnetic recording medium travels in a direction which is relatively the same as, and parallel to, a vector formed by projecting a vector extending from the inside to the outside of the surface facing the magnetic recording medium in the direction, on the surface facing the magnetic recording medium. This magnetic recording and reproducing system can remarkably reduce the step occurring on the surface facing the magnetic recording medium due to wear caused by the travel of the recording medium, and can reduce any output deterioration and fluctuation resulting from the step.
摘要翻译：本发明公开了一种使用复合磁头的磁记录和再现系统，其表面面向磁记录介质主要由铁磁金属和高磁导率铁氧体单晶组成，并且具有接近间隙的区域并由铁磁性金属，其中复合磁头布置成使得高磁导率铁氧体单晶的{110}面与形成复合磁头的主磁路的平面基本一致，<100> 位于{110}平面内的方向相对于与面向磁记录介质的表面垂直的方向以15°至75°的角度倾斜，并且磁记录介质沿相同方向行进作为并平行于通过投影从面向磁性r的表面的内部向外部延伸的矢量形成的矢量在<100>方向的记录介质上，在面向磁记录介质的表面上。这种磁记录和再现系统可以显着地减少由于记录介质的行进造成的磨损而在面对磁记录介质的表面上发生的台阶，并且可以减少由于该步骤导致的任何输出劣化和波动。

9. 发明授权

US4439794A Magnetic head 失效
标题翻译：磁头
公开(公告)号：US4439794A
公开(公告)日：1984-03-27
申请号：US264706
申请日：1981-05-18
申请人： Yoshihiro Shiroishi , Hideo Fujiwara , Takeshi Kimura , Noriyuki Kumasaka , Nobuo Kobayashi , Takeo Yamashita , Teizo Tamura , Hideo Zama , Mitsuhiro Kudo , Tsutomu Iimura
发明人： Yoshihiro Shiroishi , Hideo Fujiwara , Takeshi Kimura , Noriyuki Kumasaka , Nobuo Kobayashi , Takeo Yamashita , Teizo Tamura , Hideo Zama , Mitsuhiro Kudo , Tsutomu Iimura
IPC分类号： G11B5/127 , G11B5/133 , G11B5/187 , G11B5/193 , G11B5/23 , G11B5/251 , G11B5/14
CPC分类号： G11B5/133 , G11B5/193
摘要： A magnetic head which uses single crystal Mn-Zn ferrite containing up to 7% by weight of SnO.sub.2 occluded therein without being allowed to separate and which has such a construction that glass having a contraction rate lower than that of ferrite is filled in the narrowed portion near the gap, the plane forming the principal magnetic circuit of the core is allowed to coincide with the {110} plane of the ferrite and an angle .theta. between the direction inside the {110} plane of the ferrite and the gap-forming plane is from 5.degree. to 40.degree. or 85.degree. to 120.degree.. The magnetic head having such a construction has a reduced modulation noise and extremely excellent write-and-read characteristics.
摘要翻译：使用含有高达7重量％的SnO 2的单晶Mn-Zn铁氧体的磁头，其不被分离，并且具有这样的结构，即将收缩率低于铁素体的玻璃填充到变窄部分在间隙附近，形成芯的主磁路的平面允许与铁素体的{110}平面和铁氧体的{110}平面内的<100>方向之间的角度θ与间隙 - 成型面为5°〜40°或85°〜120°。具有这种结构的磁头具有降低的调制噪声和极好的写和读特性。

10. 发明授权

US6146135A Oxide film forming method 失效
公开(公告)号：US6146135A
公开(公告)日：2000-11-14
申请号：US680519
申请日：1996-07-09
申请人： Jinzo Watanabe , Takeo Yamashita , Masakazu Nakamura , Shintaro Aoyama , Hidetoshi Wakamatsu , Tadashi Shibata , Tadahiro Ohmi , Nobuhiro Konishi , Mizuho Morita , Hisayuki Shimada , Takashi Imaoka
发明人： Jinzo Watanabe , Takeo Yamashita , Masakazu Nakamura , Shintaro Aoyama , Hidetoshi Wakamatsu , Tadashi Shibata , Tadahiro Ohmi , Nobuhiro Konishi , Mizuho Morita , Hisayuki Shimada , Takashi Imaoka
IPC分类号： B01J19/08 , C23C8/10 , C23C8/36 , C23C14/02 , C23C14/48 , C23C16/02 , C23C16/44 , C30B23/02 , C30B25/02 , G01N23/00 , H01L21/66 , F26B21/00 , F26B3/00 , F26B19/00
CPC分类号： C30B23/02 , C23C14/022 , C23C14/48 , C23C16/02 , C23C16/4401 , C23C8/10 , C23C8/36 , C30B25/02 , C30B29/16 , Y10S438/903
摘要： Vacuum processing equipment capable of preventing particles from sticking to objects to be processed in vacuum vessels. The vacuum equipment comprises a series of vacuum vessels separated by doors, and the pressure in the vessels are reducible respectively. The vessels are so configured that objects to be processed are movable among them, and there is provided light projection means for projecting ultra rays on gases introduced to at least of the vessels.

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