-
1.发明授权
公开(公告)号：US5822159A
公开(公告)日：1998-10-13
申请号：US833186
申请日：1997-04-04
申请人： Munekatsu Fukuyama , Yasuo Sasaki , Yutaka Soda , Koji Fukumoto , Tetsuo Sekiya
发明人： Munekatsu Fukuyama , Yasuo Sasaki , Yutaka Soda , Koji Fukumoto , Tetsuo Sekiya
CPC分类号： G11B5/3967 , G11B5/3113 , G11B5/465 , G11B5/02 , G11B5/3906 , G11B5/3912
摘要： A thin-film magnetic head, a magnetoresistance effect magnetic head and an MR inductive head are disclosed. The thin-film magnetic head has one of thin-film magnetic cores stacked on a substrate and formed of two magnetic films and a non-magnetic film held between them, with a current flowing through the thin-film magnetic core in the direction of hard axis thereof. The magnetoresistance effect magnetic head has one of a pair of shield cores having a magnetoresistive element between them formed of two magnetic films and a non-magnetic film held between them, the magnetoresistive element being electrically connected to the shield core, with a sense current flowing through the shield core. The current flowing through the one shield core via the magnetoresistive element is preferably an AC of decrement amplitude for demagnetizing the shield core along with a DC sense current. Also, this current preferably flows in the direction of hard axis of the shield core so that magnetic properties of the shield core are stabilized or demagnetized by the magnetic field generated in the direction of easy axis. The MR inductive head has a second thin-film magnetic core as a common magnetic body of an MR head and an inductive head on one substrate, formed of two magnetic films and a non-magnetic film held between them, with a current flowing through the second thin-film magnetic core in the direction of hard axis thereof.
摘要翻译： 公开了一种薄膜磁头，磁阻效应磁头和MR感应头。 薄膜磁头具有堆叠在基板上的薄膜磁芯之一，由两个磁性膜和保持在它们之间的非磁性膜形成，电流沿着硬的方向流过薄膜磁芯 轴。 磁阻效应磁头具有在两个磁膜之间具有磁阻元件的一对屏蔽芯之一和保持在它们之间的非磁性膜之间，磁阻元件电连接到屏蔽芯，感测电流流过 通过屏蔽芯。 通过磁阻元件流过一个屏蔽芯的电流优选为用于使屏蔽芯与DC感测电流一起消磁的递减幅度的AC。 此外，该电流优选沿着屏蔽芯的硬轴的方向流动，使得屏蔽芯的磁性能由容易轴方向产生的磁场稳定或退磁。 MR感应头具有第二薄膜磁芯，作为MR磁头的公共磁体和一个基板上的感应磁头，由两个磁性膜和保持在它们之间的非磁性膜形成，电流流经 第二薄膜磁芯在其硬轴方向上。
-
2.发明授权
公开(公告)号：US5872691A
公开(公告)日：1999-02-16
申请号：US987652
申请日：1997-12-09
申请人： Munekatsu Fukuyama , Yasuo Sasaki , Yutaka Soda , Koji Fukumoto , Tetsuo Sekiya
发明人： Munekatsu Fukuyama , Yasuo Sasaki , Yutaka Soda , Koji Fukumoto , Tetsuo Sekiya
CPC分类号： G11B5/3967 , G11B5/3113 , G11B5/465 , G11B5/02 , G11B5/3906 , G11B5/3912
摘要： A thin-film magnetic head, a magnetoresistance effect magnetic head and an MR inductive head are disclosed. The thin-film magnetic head has one of thin-film magnetic cores stacked on a substrate and formed of two magnetic films and a non-magnetic film held between them, with a current flowing through the thin-film magnetic core in the direction of hard axis thereof. The magnetoresistance effect magnetic head has one of a pair of shield cores having a magnetoresistive element between them formed of two magnetic films and a non-magnetic film held between them, the magnetoresistive element being electrically connected to the shield core, with a sense current flowing through the shield core. The current flowing through the one shield core via the magnetoresistive element is preferably an AC of decrement amplitude for demagnetizing the shield core along with a DC sense current. Also, this current preferably flows in the direction of hard axis of the shield core so that magnetic properties of the shield core are stabilized or demagnetized by the magnetic field generated in the direction of easy axis. The MR inductive head has a second thin-film magnetic core as a common magnetic body of an MR head and an inductive head on one substrate, formed of two magnetic films and a non-magnetic film held between them, with a current flowing through the second thin-film magnetic core in the direction of hard axis thereof.
摘要翻译： 公开了一种薄膜磁头，磁阻效应磁头和MR感应头。 薄膜磁头具有堆叠在基板上的薄膜磁芯之一，由两个磁性膜和保持在它们之间的非磁性膜形成，电流沿着硬的方向流过薄膜磁芯 轴。 磁阻效应磁头具有在两个磁膜之间具有磁阻元件的一对屏蔽芯之一和保持在它们之间的非磁性膜之间，磁阻元件电连接到屏蔽芯，感测电流流过 通过屏蔽芯。 通过磁阻元件流过一个屏蔽芯的电流优选为用于使屏蔽芯与DC感测电流一起消磁的递减幅度的AC。 此外，该电流优选沿着屏蔽芯的硬轴的方向流动，使得屏蔽芯的磁性能由容易轴方向产生的磁场稳定或退磁。 MR感应头具有第二薄膜磁芯，作为MR磁头的公共磁体和一个基板上的感应磁头，由两个磁性膜和保持在它们之间的非磁性膜形成，电流流经 第二薄膜磁芯在其硬轴方向上。
-
公开(公告)号：US5313342A
公开(公告)日：1994-05-17
申请号：US979483
申请日：1992-11-20
申请人： Yutaka Soda , Keisuke Fujiwara , Hiroaki Yada , Satoru Seko , Munekatsu Fukuyama , Tetsuo Sekiya
发明人： Yutaka Soda , Keisuke Fujiwara , Hiroaki Yada , Satoru Seko , Munekatsu Fukuyama , Tetsuo Sekiya
CPC分类号： G11B23/087 , G11B15/125 , G11B15/32 , G11B23/28 , G11B5/00878 , G11B5/4893
摘要： An analog/digital compatible reproducing system is disclosed, particularly a stationary head system using a digital recorded magnetic tape having a plurality of n, digital data recorded tracks. An analog recorded magnetic tape has a first analog recorded track and a second analog recorded track between which a guardband of a certain width is provided. Signals are reproduced from the digital recorded magnetic tape by driving n reproducing magnetic head elements respectively corresponding to the n digital data recorded tracks. The analog recorded magnetic tape is reproduced by driving a plurality of m reproducing magnetic head elements of said n reproducing, magnetic head elements, corresponding to the first and second recorded tracks so that common outputs can be produced from the m reproducing magnetic head elements. There is also disclosed a tape cassette used in such system.
摘要翻译： 公开了一种模拟/数字兼容再现系统，特别是使用具有多个n个数字数据记录磁道的数字记录磁带的固定磁头系统。 模拟记录磁带具有第一模拟记录磁道和第二模拟记录磁道，在其之间提供一定宽度的保护带。 通过驱动分别对应于n个数字数据记录轨道的n个再现磁头元件，从数字记录磁带再现信号。 通过驱动对应于第一和第二记录磁道的所述n个再现磁头元件的多个m个再现磁头元件来再现模拟记录磁带，使得可以从m个再现磁头元件产生公共输出。 还公开了在这种系统中使用的磁带盒。
-
公开(公告)号：US5260836A
公开(公告)日：1993-11-09
申请号：US618906
申请日：1990-11-28
申请人： Horoaki Yada , Yutaka Soda , Keisuke Fujiwara , Satoru Seko , Munekatsu Fukuyama , Tetsuo Sekiya
发明人： Horoaki Yada , Yutaka Soda , Keisuke Fujiwara , Satoru Seko , Munekatsu Fukuyama , Tetsuo Sekiya
CPC分类号： G11B5/00878 , G11B20/00 , G11B5/02
摘要： Apparatus is provided for reproducing either M channels of digital audio signals recorded in longitudinal tracks on a record medium or an analog audio signal recorded in one or two stereo tracks. M heads are used to reproduce the M channels of digital audio signals and N of those heads (N.ltoreq.M) are used to reproduce the analog audio signal. The reproduced digital or analog audio signals are multiplexed and digitized. When digital audio signals are reproduced, the digitized multiplexed signals are digitally processed and then converted to analog form. When analog audio signals are reproduced, the digitized multiplexed signals are summed such that signals reproduced by the N heads are combined to form a digital representation of the recorded analog audio signal. The summed signals then are converted to analog form to recover the original analog audio signal.
-
公开(公告)号：US5424890A
公开(公告)日：1995-06-13
申请号：US295229
申请日：1994-08-24
申请人： Hideo Suyama , Tetsuo Sekiya , Munekatsu Fukuyama , Norio Saito , Takuji Shibata
发明人： Hideo Suyama , Tetsuo Sekiya , Munekatsu Fukuyama , Norio Saito , Takuji Shibata
摘要： A magnetoresistance effect type thin film head (A) constructed in a manner that a magnetoresistance effect element, that is, an MR element (1) is disposed perpendicularly to a head surface a, and among two electrodes (2a) and (2b) led out from both ends of the MR element (1), the one electrode (2a) is exposed to the head surface a but the other electrode (2b) is not exposed to the head surface a, wherein the one electrode (2a) exposed to the head surface a is connected to a ground voltage Vss, thereby decreasing the change in voltage difference between the electrode (2a) of the MR element (1) and a disc surface b to prevent the electrical breakdown of the thin film head (A).
摘要翻译： 以磁致电阻效应元件即MR元件（1）垂直于磁头表面a设置的磁阻效应型薄膜磁头（A），以及在两个电极（2a）和（2b）之间引导的磁阻效应型薄膜磁头 从MR元件（1）的两端出来，一个电极（2a）暴露于头表面a，而另一个电极（2b）不暴露于磁头表面a，其中一个电极（2a）暴露于 头表面a连接到接地电压Vss，从而减小MR元件（1）的电极（2a）与盘表面b之间的电压差的变化，以防止薄膜头（A）的电击穿， 。
-
6.发明授权Magnetic transducer head utilizing magneto resistance effect with a bias field and partial saturation 失效磁传感器头利用具有偏置场和部分饱和的磁阻效应
公开(公告)号：US4524401A
公开(公告)日：1985-06-18
申请号：US333423
申请日：1981-12-22
申请人： Hiroyuki Uchida , Takehiro Nagaki , Shigeyoshi Imakoshi , Yutaka Soda , Junkichi Sugita , Tetsuo Sekiya
发明人： Hiroyuki Uchida , Takehiro Nagaki , Shigeyoshi Imakoshi , Yutaka Soda , Junkichi Sugita , Tetsuo Sekiya
CPC分类号： G11B5/3903
摘要： A magnetic transducer head utilizing a thin film magneto-resistance effect element is disclosed in which the amount of a DC bias magnetic field is so selected that only the end portion of the thin film magneto-resistance effect element serving as a contact surface with a magnetic medium is effectively given with sensitivity and the element is saturated in the vicinity of its central portion in its width direction.
摘要翻译： 公开了一种利用薄膜磁阻效应元件的磁转换头，其中直流偏置磁场的量如此选择，使得只有薄膜磁阻效应元件的端部作为具有磁性的接触表面 介质有效地被赋予灵敏度，元件在其中心部分的宽度方向附近饱和。
-
公开(公告)号：US5065390A
公开(公告)日：1991-11-12
申请号：US341115
申请日：1989-04-20
申请人： Teiichi Miyauchi , Yutaka Soda , Tetsuo Sekiya
发明人： Teiichi Miyauchi , Yutaka Soda , Tetsuo Sekiya
IPC分类号： G11B5/31 , G11B5/60 , G11B7/12 , G11B11/105
CPC分类号： G11B11/10545 , G11B11/10532 , G11B11/10554 , G11B11/1058 , G11B5/313 , G11B5/3163 , G11B5/6005 , G11B7/122 , G11B7/124
摘要： A magneto-optical playback head which comprises a first optical waveguide facing to a light source at one end thereof and facing to a magneto-optical recording medium at other end thereof for guiding an incident light beam to the magneto-optical recording medium, a second optical waveguide for guiding a light beam reflected from the magneto-optical recording medium to a photodetector provided at one end thereof, a polarizer provided for the first optical waveguide, and an analyzer provided for the second optical waveguide, the polarizer and the analyzer being formed by providing first and second conductive layers on the first and second optical waveguides, with first and second insulating buffer layers interposed therebetween, respectively.
-
公开(公告)号：US4713710A
公开(公告)日：1987-12-15
申请号：US833396
申请日：1986-02-25
申请人： Yutaka Soda , Hideko Imamura , Hiroyuki Uchida , Tetsuo Sekiya
发明人： Yutaka Soda , Hideko Imamura , Hiroyuki Uchida , Tetsuo Sekiya
CPC分类号： G11B5/2651 , G11B5/10 , G11B5/115 , G11B5/1871 , G11B5/3103
摘要： The present invention is to construct a combination magnetic head apparatus in which thin film type magnetic head element portions, circuits and circuit parts accompanying therewith are mounted on first and second magnetic shield plates to thereby construct a recording head and a reproducing head and both the magnetic shield plates are bonded together at the back surfaces thereof with the result that the apparatus can be made small in size, the assembling thereof can be simplified and the accuracy thereof can be improved.
摘要翻译： PCT No.PCT / JP85 / 00351 Sec。 371日期1986年2月25日 102（e）日期1986年2月25日PCT提交1985年6月21日PCT公布。 公开号WO86 / 00456 日本1986年1月16日。本发明是构成一种组合磁头装置，其中薄膜型磁头元件部分，电路和伴随其的电路部件安装在第一和第二磁屏蔽板上，从而构成记录头， 再现头和两个磁屏蔽板在其后表面处结合在一起，结果可以使该装置的尺寸变小，从而可以简化其组装并提高其精度。
-
公开(公告)号：US4757410A
公开(公告)日：1988-07-12
申请号：US793089
申请日：1985-10-30
申请人： Satoru Seko , Yutaka Soda , Hiroyuki Uchida , Tetsuo Sekiya
发明人： Satoru Seko , Yutaka Soda , Hiroyuki Uchida , Tetsuo Sekiya
CPC分类号： G11B5/3925 , G11B5/3977 , G11B5/488
摘要： A multi-channel magnetoresistance effect type magnetic head has a short wavelength region magnetic head element and a relatively longer wavelength region magnetic head element. The two head elements are provided on a magnetic substrate with each having a magnetic circuit containing a magnetic gap facing a surface adjacent to and across from a magnetic recording medium. Each magnetic circuit has a discontinuity portion with a bridging magnetoresistance effect sensing element to magnetically connect the discontinuity portion. The longer wavelength magnetic head discontinuity portion is spaced at a greater distance from the adjacent surface than is the discontinuity portion of the shorter wavelength magnetic head element.
摘要翻译： 多通道磁阻效应型磁头具有短波长区磁头元件和较长波长区磁头元件。 两个头部元件设置在磁性基板上，每个磁性元件具有磁路，该磁路包含面向与磁记录介质相邻并与之相对的表面的磁隙。 每个磁路具有具有桥接磁阻效应传感元件的不连续部分以磁连接不连续部分。 较长波长的磁头不连续部分与相对于较短波长的磁头元件的不连续部分相距更远的距离。
-
公开(公告)号：US4516179A
公开(公告)日：1985-05-07
申请号：US408025
申请日：1982-08-13
申请人： Shigeyoshi Imakoshi , Yutaka Soda , Hiroyuki Uchida , Junkichi Sugita , Hiroshi Takino , Tetsuo Sekiya , Hideo Suyama
发明人： Shigeyoshi Imakoshi , Yutaka Soda , Hiroyuki Uchida , Junkichi Sugita , Hiroshi Takino , Tetsuo Sekiya , Hideo Suyama
CPC分类号： G11B5/3903 , G11B5/3106 , G11B5/40
摘要： A magnetic transducer head utilizing magnetoresistance effect is disclosed which includes a thin film magnetoresistance effect element held between, first and second substrates, at least one of the first and second substrates being formed of an electrically conductive material, and a biasing means for the magnetoresistance effect element to satisfy a potential relation V.sub.MR -V.sub.S .ltoreq.0.2 volt, wherein V.sub.MR is a potential of the magnetoresistance effect element, and V.sub.S is a potential of the conductive substrate.
摘要翻译： 公开了一种利用磁阻效应的磁换能器头，其包括保持在第一和第二基板之间的薄膜磁阻效应元件，第一和第二基板中的至少一个由导电材料形成，以及用于磁阻效应的偏置装置 元件以满足VMR-VS
-
-
-
-
-
-
-
-
-
搜索结果
31 条记录 (耗时 0.021 秒)