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1. 发明专利

JP2005018836A Magnetic head and method for manufacturing the same 审中-公开
标题翻译：磁头及其制造方法
公开(公告)号：JP2005018836A
公开(公告)日：2005-01-20
申请号：JP2003178722
申请日：2003-06-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIMURA HISASHI , FUYAMA MORIAKI
IPC分类号： G11B5/31 , G11B5/127 , G11B5/187 , G11B5/40
CPC分类号： G11B5/1278 , G11B5/1871 , G11B5/3116 , G11B5/3163 , G11B5/40 , Y10T29/49032
摘要： PROBLEM TO BE SOLVED: To provide a thin-film magnetic recording head which avoids the corrosion of a main magnetic pole section and is suitable for higher recording density. SOLUTION: A nonmagnetic metallic film 35 is formed on the upper part side of the main magnetic pole 32. Ta, Cr, NiCr, etc., are used for the management metallic film. The film thickness of the nonmagnetic metallic film is 5 to 30 nm. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种薄膜磁记录头，其避免了主磁极部分的腐蚀并且适合于更高的记录密度。解决方案：在主磁极32的上部侧形成有非磁性金属膜35.Ta，Cr，NiCr等用于管理金属膜。非磁性金属膜的膜厚为5〜30nm。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2002367124A Spin-valve magnetic head 审中-公开
标题翻译：旋转磁头
公开(公告)号：JP2002367124A
公开(公告)日：2002-12-20
申请号：JP2001177925
申请日：2001-06-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HOSHIYA HIROYUKI , HATAYA MASAHIKO , KIMURA HISASHI , IDE HIROSHI
IPC分类号： G01R33/09 , G11B5/39 , H01F10/28 , H01F10/32 , H01L43/08
CPC分类号： B82Y10/00 , G11B5/3903 , G11B5/3967
摘要： PROBLEM TO BE SOLVED: To provide a spin-valve magnetic head having the high reproducing output and high stability even for a narrow track. SOLUTION: A ferromagnetic single magnetic domain layer 45 is formed on a soft magnetic free layer 13 through a non-magnetic separation layer 41, and the soft magnetic free layer 13 and the ferromagnetic single magnetic domain layer 45 are static-magnetically combined at an end part of the track width to form a closed magnetic circuit, then the magnetic head furnished with a spin-valve magneto-resistive element is obtained, in which the soft magnetic layer 13 has the substantially fixed magnetization in the almost orthogonally crossed direction with respect to a magnetic field to be sensed.
摘要翻译：要解决的问题：即使对于窄轨迹，也提供具有高再现输出和高稳定性的自旋阀磁头。解决方案：铁磁单磁畴层45通过非磁性分离层41形成在软磁性自由层13上，软磁性层13和铁磁单磁畴层45在末端被静磁组合形成磁道宽度的一部分以形成闭合磁路，然后获得具有自旋阀磁阻元件的磁头，其中软磁性层13在几乎正交的方向上相对于要感测的磁场。

3. 发明专利

JP2003068071A Semiconductor memory 审中-公开
标题翻译：半导体存储器
公开(公告)号：JP2003068071A
公开(公告)日：2003-03-07
申请号：JP2001261132
申请日：2001-08-30
申请人： Hitachi Ltd , Hitachi Ulsi Systems Co Ltd , 株式会社日立製作所 , 株式会社日立超エル・エス・アイ・システムズ
发明人： INOUE YOSHIHIKO , KIMURA HISASHI , HORIGUCHI SHINJI
IPC分类号： G11C11/401 , G11C11/403 , G11C11/406 , G11C29/00 , G11C29/04
CPC分类号： G11C11/406
摘要： PROBLEM TO BE SOLVED: To provide a semiconductor memory in which a refresh-cycle time can be shortened.
SOLUTION: This semiconductor memory has regular memory cells provided at the prescribed intersections of a plurality of regular word lines and a plurality of bit lines and redundant memory cells provided at the prescribed intersections of redundant word lines and the plurality of bit lines, it is discriminated whether each of internal address signals and refresh-address signals for memory operation corresponds to an address of a defective word line out of the plurality of regular word lines or not by a redundant relieving circuit, and a defective word line caused in a regular word line is switched to a redundant word line by an address selecting circuit in accordance with the discriminated result. In the redundant relieving circuit, it is discriminated whether a refresh- address in which 1 is added to the refresh-address signal corresponds to a defective address or not, in the address selecting circuit, selecting operation of a regular word line or a redundant word line is performed conforming to the discriminated result in a previous cycle during refresh-operation.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供可以缩短刷新周期时间的半导体存储器。解决方案：该半导体存储器具有设置在冗余字线和多个位线的规定交点处的多个常规字线和多个位线和冗余存储单元的规定交点处的规则存储单元，用于存储器操作的内部地址信号和刷新地址信号中的每一个是否对应于多个常规字线中的缺陷字线的地址，而不是由冗余解除电路，以及在正常字线中引起的有缺陷的字线根据鉴别结果由地址选择电路切换到冗余字线。在冗余消除电路中，区分在地址选择电路中，在刷新地址信号中添加1的刷新地址是否对应于缺陷地址，选择正常字线或冗余字的操作在刷新操作期间，在前一周期中符合判别结果执行线。

4. 发明专利

JP2003067904A Magneto-resistance effect magnetic head and its manufacturing method 审中-公开
标题翻译：磁阻效应磁头及其制造方法
公开(公告)号：JP2003067904A
公开(公告)日：2003-03-07
申请号：JP2001257265
申请日：2001-08-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MEGURO KENICHI , KIMURA HISASHI , WATANABE KATSURO
IPC分类号： G01R33/09 , G11B5/39 , H01L43/08
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3909 , G11B2005/3996 , Y10T29/49021 , Y10T29/49032 , Y10T29/49034 , Y10T29/49043 , Y10T29/49044 , Y10T29/49128 , Y10T29/49155
摘要： PROBLEM TO BE SOLVED: To provide a magneto-resistance effect magnetic head which realizes supersensitivity and low noise even though narrowing of play back tracks continues. SOLUTION: A magnetic domain control is performed at a ferromagnetism free layer where magnetization rotates in accordance with an external magnetic field by granting of an unidirectional magnetic anisotropy with switched connection of antiferromagnetism, and the effective playback track width is narrowed by disposing a hard magnetic film at an edge part of a magneto-resistive film.
摘要翻译：要解决的问题：为了提供即使缩小回放轨道的变窄，实现超灵敏度和低噪声的磁阻效应磁头。解决方案：磁畴控制是在磁化自由层进行的，其中磁化通过具有反铁磁性的切换连接的单向磁各向异性的赋予而获得的磁场随外部磁场而旋转，通过配置硬磁性膜在磁阻膜的边缘部分。

5. 发明专利

JP2004259306A Magnetic recording medium and manufacturing method of magnetic recording medium 审中-公开
标题翻译：磁记录介质和磁记录介质的制造方法
公开(公告)号：JP2004259306A
公开(公告)日：2004-09-16
申请号：JP2003045262
申请日：2003-02-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HAGINOYA CHISEKI , SUZUKI KO , KIMURA HISASHI , FUTAMOTO MASAAKI , MATSUYAMA HIDEO
IPC分类号： G11B5/667 , G11B5/65 , G11B5/73 , G11B5/84 , G11B5/855
CPC分类号： G11B5/82 , G11B5/667 , G11B5/8404 , G11B5/855
摘要： PROBLEM TO BE SOLVED: To perform high density magnetic recording by a perpendicular magnetic recording head to material having large coercive force.
SOLUTION: It becomes possible to make the magnetic field from a recording head converge on protruding parts of soft magnetism by performing patterning while synchronizing the soft magnetism backing layer of a perpendicularly two layered recording medium with the period of recording bits. Thus, reversal of magnetization of a magnetic recording medium material having a large anisotropic constant becomes possible and the high density magnetic recording becomes possible.
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：通过垂直磁记录头对具有大矫顽力的材料进行高密度磁记录。解决方案：通过在垂直两层记录介质的软磁背衬层与记录位的周期同步的同时进行图案化，可以使来自记录头的磁场会聚在软磁性的突出部分上。因此，具有大的各向异性常数的磁记录介质材料的磁化反转成为可能，并且可以实现高密度磁记录。版权所有（C）2004，JPO＆NCIPI

6. 发明专利

JP2002367118A Magnetic head and magnetic recording/reproducing device using the same 审中-公开
标题翻译：磁头和磁记录/再现装置
公开(公告)号：JP2002367118A
公开(公告)日：2002-12-20
申请号：JP2001173400
申请日：2001-06-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIMURA HISASHI , HOSHIYA HIROYUKI , NAKAMOTO KAZUHIRO
IPC分类号： G11B5/39
摘要： PROBLEM TO BE SOLVED: To reduce reproduction blurring from the adjacent track of a magnetic medium in a high-density magnetic recording device.
SOLUTION: A nonmagnetic film is arranged on a magnetic domain control layer, and a side multilayer shield layer alternately laminating a soft magnetic film and a nonmagnetic film is formed thereon.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了减少高密度磁记录装置中的磁介质的相邻轨迹的再现模糊。解决方案：在磁畴控制层上设置非磁性膜，在其上形成交替层叠软磁膜和非磁性膜的侧面多层屏蔽层。

7. 发明专利

JP2004005826A PERPENDICULAR MAGNETIC HEAD, AND PERPENDICULAR MAGNETIC RECORDING AND REPRODUCING DEVICE 审中-公开
公开(公告)号：JP2004005826A
公开(公告)日：2004-01-08
申请号：JP2002159603
申请日：2002-05-31
申请人： HITACHI LTD
发明人： KIMURA HISASHI , NAKAMOTO KAZUHIRO , KAWATO YOSHIAKI , YOSHIDA NOBUO
IPC分类号： G11B5/00 , G11B5/09 , G11B5/127 , G11B5/187 , G11B5/31 , G11B5/39
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular recording and a reproducing device that can prevent degraded overwriting by improving the overwriting-to-erasing ratio of the perpendicular recording head. SOLUTION: Overwriting is prevented from degrading, by reducing the magnetic interference of the magnetized medium to the recording poles by forming a third pole consisting of a soft magnetic film at the leading side of the recording poles of the perpendicular magnetic head via a non-magnetic film. COPYRIGHT: (C)2004,JPO

8. 发明专利

JP2001056914A MAGNETIC HEAD AND MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JP2001056914A
公开(公告)日：2001-02-27
申请号：JP2000073927
申请日：2000-03-13
申请人： HITACHI LTD
发明人： NAKAMOTO KAZUHIRO , HOSHIYA HIROYUKI , KAWABE TAKASHI , TAKAHASHI HIROMASA , KIMURA HISASHI , WATANABE KATSURO , ISHIKAWA CHIAKI , TOTSUKA KO
IPC分类号： G11B5/39 , H01F10/00 , H01F10/06 , H01F10/08 , H01F10/32 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To realize a magnetic recording and reproducing device having high recording density and reduced deterioration of properties due to a short circuit between a magneto-resistance effect film and a magnetic shield layer even when a shield interval is narrowed. SOLUTION: This magnetic head has an upper shield layer 15, a lower shield layer 13 and a magneto-resistance effect film 14 disposed therebetween. One or both of the shield layer 15 and 13 are constituted of a high resistance film comprising a mixed film of ferromagnetic metal with an insulating material or a discontinuously laminated film formed by alternately laminating a multi- layered ferromagnetic metal layer and a multi-layered insulating material layer to reduce deterioration of properties due to a short circuit.

9. 发明专利

JPS5634117A DETECTION SYSTEM OF ERROR POSITION 失效
公开(公告)号：JPS5634117A
公开(公告)日：1981-04-06
申请号：JP10948179
申请日：1979-08-28
申请人： NIPPON TELEGRAPH & TELEPHONE , HITACHI LTD , FUJITSU LTD
发明人： HIRONO TADASHI , NISHIMURA KAZUTOSHI , OKA TAKASHI , KIMURA HISASHI
IPC分类号： G11B5/09 , G11B20/18 , H03K5/1532
摘要： PURPOSE:To enable to increase the precision of pointer through accurate detection of data position in error, by using the information relating to the polarity of reproduction signal or combining it with the information relating to the level. CONSTITUTION:In the digital magnetic recorder such as magnetic tape, when the input signal is of positive or negative polarity, the comparators 9, 10 output the signal waveforms 3, 4 by the width of period corresponded respectively. The output is latched to the flip-flops (FF)11, 13 in synchronizing with the respective clock to set the information of the polarity, and this information is set to FF12, 14 at the next clock and simultaneously FF11, 13 are reset. Thus, when the polarity of waveform is alternately appeared, FF11, 13 and FF12, 14 are alternately set or reset, and when both are all in set state, the error output 22 is picked up from the OR gate 17.

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