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1. 发明授权

EP0882289B1 LATERAL MAGNETO-ELECTRONIC DEVICE EXPLOITING A QUASI-TWO-DIMENSIONAL ELECTRON GAS 失效
标题翻译： SIDE Magento的电子器件下方剥削准二维电气的
公开(公告)号：EP0882289B1
公开(公告)日：2003-08-06
申请号：EP97909530.4
申请日：1997-11-06
申请人： Koninklijke Philips Electronics N.V.
发明人： LENSSEN, Kars-Michiel, Hubert
IPC分类号： G11B5/127 , G11C11/15 , G01R33/06 , H01L43/00
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/00 , G11B5/127 , G11B5/245 , G11B5/31 , G11B5/3903 , G11B5/493 , G11B2005/3996 , G11C11/14 , G11C11/15 , H01F10/3254 , H01L29/82 , H01L43/08
摘要： A magneto-electronic device comprising a substrate (1) on which a first body (21) and a second body (22) of magnetic material are provided, whereby the magnetization (M2) of at least the second body (22) is not fixed, the two bodies (21, 22) being substantially coplanar and mutually isolated, and being mutually connected via a layer (3) of semi-conductor material in which a quasi-two-dimensional electron gas can be generated.

2. 发明公开

EP1221163A1 LONGITUDINAL MAGNETIC RECORDING HEADS WITH VARIABLE-LENGTH GAPS 有权
标题翻译：可变长度的列纵向记录磁头
公开(公告)号：EP1221163A1
公开(公告)日：2002-07-10
申请号：EP00968664.3
申请日：2000-10-04
申请人： Seagate Technology LLC
发明人： KHIZROEV, Sakhrat , LITVINOV, Dmitri , KRYDER, Mark Howard , BAIN, James, A.
IPC分类号： G11B5/23
CPC分类号： G11B5/3116 , G11B5/127 , G11B5/23 , G11B5/232 , G11B5/245 , G11B5/3163
摘要： A longitudinal recording head (50, 56, 60) for use with magnetic recording media includes a non-uniform gap (54, 59, 64) between first (51, 57, 61) and second magnetic (52, 58, 62) poles which focuses magnetic flux onto a small area of the magnetic recording medium. The non-uniform gap is preferably in the form of a cavity that is contoured to produce the desired flux pattern. Longitudinal recording heads incorporating the non-uniform gap are capable of improved recording densities.

3. 发明公开

EP1176585A2 Magnetic head, magnetic recording and reproducing apparatus, method for reproducing and recording magnetic recording information 有权
标题翻译： Magnetkopf，Magnetaufzeichnungs- undwiedergabegerät，Magnetaufzeichnungsinformationswiedergabe- und aufzeichnungssmethode
公开(公告)号：EP1176585A2
公开(公告)日：2002-01-30
申请号：EP01106395.5
申请日：2001-03-20
申请人： Hitachi, Ltd.
发明人： Ito, Kenchi, Hitachi,Ltd.Intell.Property Group , Soeya, Susumu, Hitachi,Ltd.Intell.Property Group
IPC分类号： G11B5/33 , G11B5/127 , G11B5/245 , G11B5/39 , G11B5/00
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/00 , G11B5/127 , G11B5/245 , G11B5/2452 , G11B5/3113 , G11B5/3116 , G11B5/3146 , G11B5/33 , G11B5/39 , G11B5/3919 , G11B13/045 , G11B2005/0002 , G11B2005/0005 , G11B2005/0008 , G11B2005/0021 , G11B2005/3996
摘要： There are provided a magnetic reproducing head and a magnetic recording head, which are easy to manufacture and suited for recording and reproducing by means of magnetic recording medium (810, 910, 1002) of narrow track size. The magnetic reproducing head is constituted by a GMR or TMR magnetic sensor (105, 705), and a flux guide (104, 106, 704, 706) for introducing a magnetic flux (503) into the magnetic sensor (105, 705), wherein at least a portion of the flux guide (104, 106, 704, 706) is constituted by a material which is capable of permitting the magnetic flux (503) to pass therethrough at a temperature of not lower than a predetermined temperature Tp, but not permitting the magnetic flux to pass therethrough at a temperature of lower than Tp. Light (501) is irradiated to only a portion of the flux guide (104, 106, 704, 706) to cause the temperature of the irradiated portion to rise up to Tp or more, thereby permitting a magnetic flux (503) to pass only through the irradiated portion, thus narrowing the track width of magnetic reproducing head on the occasion of detecting a magnetic recording information from the magnetic recording medium (810, 910, 1002).
摘要翻译：提供了一种易于制造并且适合于通过窄轨道尺寸的磁记录介质（810,910,1002）进行记录和再现的磁记录头和磁记录头。磁性再现头由GMR或TMR磁传感器（105,705）和用于将磁通（503）引入磁传感器（105,705））的磁通引导件（104,106,704,706）构成，其特征在于，所述磁通引导件（104,106,704,706）的至少一部分由能够允许磁通（503）在不低于预定温度Tp的温度下通过的材料构成，但是不允许磁通在低于Tp的温度下通过。光（501）仅照射到磁通导向件（104,106,704,706）的一部分，以使照射部分的温度升高至Tp以上，从而允许磁通（503）仅通过通过照射部分，从而在从磁记录介质（810,910,1002）检测磁记录信息的情况下使磁再现头的磁道宽度变窄。

4. 发明公开

EP0778562A3 Magnetic recording and reproducing apparatus 失效
标题翻译： Magnetaufzeichnungs- undWiedergabegerät
公开(公告)号：EP0778562A3
公开(公告)日：1998-12-30
申请号：EP96119647
申请日：1996-12-06
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ISHIDA TATSUAKI , SUGITA RYUJI , HASEGAWA HIROYUKI
IPC分类号： G11B5/66 , G11B5/00 , G11B5/008 , G11B5/02 , G11B5/09 , G11B5/187 , G11B5/21 , G11B5/23 , G11B5/245 , G11B5/64 , G11B5/78 , G11B20/14
CPC分类号： G11B5/65 , G11B5/00 , G11B5/00813 , G11B5/02 , G11B5/09 , G11B5/187 , G11B5/21 , G11B5/23 , G11B5/245 , G11B5/78
摘要： It is an object of the invention to maximumly extract a recording and reproducing performance of a thin film tape in a recording and reproducing apparatus for a thin film magnetic tape by a separately recording and reproducing system. According to the invention, there is provided an apparatus for recording and reproducing a signal by using a thin film magnetic tape as a medium and using ring type magnetic heads for recording and reproducing the signal, wherein the gap length of the magnetic head for reproducing is larger than the gap length of the magnetic head for recording.
摘要翻译：本发明的目的是通过单独的记录和再现系统在薄膜磁带的记录和再现装置中最大限度地提取薄膜带的记录和再现性能。根据本发明，提供了一种通过使用薄膜磁带作为介质来记录和再现信号的装置，并且使用环形磁头来记录和再现信号，其中用于再现的磁头的间隙长度是大于用于记录的磁头的间隙长度。

5. 发明授权

EP0459426B1 Thin film magnetic head 失效
标题翻译：薄膜磁头
公开(公告)号：EP0459426B1
公开(公告)日：1996-12-11
申请号：EP91108743.5
申请日：1991-05-28
申请人： SONY CORPORATION
发明人： Narisawa, Hiroaki, c/o SONY MAGNETIC PRODUCTS, INC , Saito, Norio, c/o SONY MAGNETIC PRODUCTS, INC , Ishikawa, Wataru, c/o SONY MAGNETIC PRODUCTS, INC , Sato, Jin, c/o SONY MAGNETIC PRODUCTS, INC , Watanabe, Takashi, c/o SONY MAGNETIC PRODUCTS, INC
IPC分类号： G11B5/31
CPC分类号： G11B5/3116 , G11B5/245

6. 发明公开

EP0689196A1 Planar thin film magnetic head 失效
标题翻译： PlanarerDünnfilmmagnetkopf
公开(公告)号：EP0689196A1
公开(公告)日：1995-12-27
申请号：EP95112455.1
申请日：1991-08-21
申请人： SONY CORPORATION
发明人： Miyauchi, Teiichi, c/o Sony Corp. , Yamakawa, Kiyoshi, c/o Sony Corp. , Matsuzono, Atsushi, c/o Sony Corp.
IPC分类号： G11B5/127 , G11B5/39 , G11B5/23 , G11B5/31
CPC分类号： G11B5/3925 , G11B5/245 , G11B5/3106 , G11B5/3113 , G11B5/3163 , G11B5/3183 , G11B5/3903 , G11B5/3967 , G11B2005/0008 , G11B2005/0013
摘要： Head wherein an axis of easy magnetization in the vicinity of a magnetic gap (g) of a magnetic yoke (37) is forcibly made coincident with the direction of a track width by a magnetic field due to current flowing in a conductor layer (1). Accordingly, even though the track width is small, a high magnetic permeability, low Barkhausen noise and linear responsiveness can be realized to thereby improve the sensitivity, output and linearity. In another aspect of the invention, a throat portion is eliminated from a thin film magnetic core forming a magnetic gap. The thin film magnetic core is configured such that a pair of magnetic members constituting the magnetic core are diverged from the magnetic gap so that a divergent angle ϑ, of first opposite side edges of the magnetic members, from a direction of the gap length of the magnetic gap, is set to the range of 30° ≦ ϑ ≦ 80°, and the magnetic members have second opposite side edges extending in substantially parallel to the direction of the gap length of the magnetic gap. Accordingly, even though a track width is reduced less than 10µm, adjoining crosstalk or off track crosstalk can be avoided to thereby realize low-noise and high quality reproduction and improve the operating characteristics.
摘要翻译：其中磁轭（37）的磁隙（g）附近的容易磁化的轴被强制地由于电流在导体层（1）中流动而由轨道宽度的方向与磁场一致的磁头，。因此，即使轨道宽度小，也可以实现高磁导率，低Barkhausen噪声和线性响应性，从而提高灵敏度，输出和线性。在本发明的另一方面，从形成磁隙的薄膜磁芯中除去喉部。薄膜磁芯被构造为使得构成磁芯的一对磁性构件从磁隙发散，使得磁性构件的第一相对侧边缘的发散角θ与该磁性构件的间隙长度方向磁隙设定在30°/°80°的范围内，并且磁性构件具有基本上平行于磁隙的间隙长度的方向延伸的第二相对侧边缘。因此，即使轨道宽度减小到小于10μm，可以避免相邻的串扰或离轨道串扰，从而实现低噪声和高品质的再现并提高操作特性。

7. 发明公开

EP0390347A3 Recording head to optimize high density recording 失效转让
标题翻译：记录头以优化高密度记录
公开(公告)号：EP0390347A3
公开(公告)日：1993-03-17
申请号：EP90302310.9
申请日：1990-03-05
申请人： QUANTUM CORPORATION
发明人： Sidman, Alan Lee
IPC分类号： G11B5/187 , G11B5/31 , G11B5/265 , G11B5/245 , G11B5/09 , H01F41/14
CPC分类号： G11B5/3143 , G11B5/09 , G11B5/187 , G11B5/245 , G11B5/265 , G11B5/3116 , G11B5/3163 , H01F41/34
摘要： To optimize high density recording by reduction of hooks on ends of transitions, the recording head has at least two poles with a gap section inbetween and configured with the second pole (P₂) and gap section (g) being greater in width than the first pole (P₁). Transverse field components are reduced at the head fringes and the transition becomes substantially parallel to gap. The vertical components of the head field are also minimized. Method for producing head with narrow first pole (P₁) includes planarization of first pole area to receive wider gap layer (g) and wider second pole (P₂).

8. 发明公开

EP0472187A1 Planar thin film magnetic head 失效
标题翻译： FlacherDünnfilmmagnetkopf。
公开(公告)号：EP0472187A1
公开(公告)日：1992-02-26
申请号：EP91114008.5
申请日：1991-08-21
申请人： SONY CORPORATION
发明人： Miyauchi,Teiichi , Yamakawa, Kiyoshi , Matsuzono, Atsushi
IPC分类号： G11B5/127 , G11B5/39 , G11B5/23
CPC分类号： G11B5/3925 , G11B5/245 , G11B5/3106 , G11B5/3113 , G11B5/3163 , G11B5/3183 , G11B5/3903 , G11B5/3967 , G11B2005/0008 , G11B2005/0013
摘要： A planar thin film magnetic head is disclosed wherein an axis of easy magnetization in the vicinity of a magnetic gap (g) of a magnetic yoke (37)is forcibly made coincident with the direction of a track width by a magnetic field due to current flowing in a conductor layer (38). Accordingly, even though the track width is small, a high magnetic permeability, low Barkhausen noise and linear responsiveness can be realized to thereby improve the sensitivity, output and linearity. In another aspect of the invention, a throat portion is eliminated from a thin film magnetic core forming a magnetic gap. The thin film magnetic core is configured such that a pair of magnetic members constituting the magnetic core are diverged from the magnetic gap so that a divergent angle ϑ, of first opposite side edges of the magnetic members, from a direction of the gap length of the magnetic gap, is set to the range of 30° ≦ ϑ ≦ 80°, and the magnetic members have second opposite side edges extending in substantially parallel to the direction of the gap length of the magnetic gap. Accordingly, even though a track width is reduced less than 10µm, adjoining crosstalk or off track crosstalk can be avoided to thereby realize low-noise and high quality reproduction and improve the operating characteristics.
摘要翻译：公开了一种平面薄膜磁头，其中磁轭（37）的磁隙（g）附近的容易磁化的轴线由于电流流动被强制地与磁道宽度的方向一致在导体层（38）中。因此，即使轨道宽度小，也可以实现高磁导率，低Barkhausen噪声和线性响应性，从而提高灵敏度，输出和线性。在本发明的另一方面，从形成磁隙的薄膜磁芯中除去喉部。薄膜磁芯被构造为使得构成磁芯的一对磁性构件从磁隙发散，使得磁性构件的第一相对侧边缘的发散角θ与该磁性构件的间隙长度方向磁隙设定在30°/°80°的范围内，并且磁性构件具有基本上平行于磁隙的间隙长度的方向延伸的第二相对侧边缘。因此，即使轨道宽度减小到小于10μm，可以避免相邻的串扰或离轨道串扰，从而实现低噪声和高品质的再现并提高操作特性。

9. 发明公开

EP0301823A3 Three-pole magnetic recording head 失效
标题翻译：三位磁记录头
公开(公告)号：EP0301823A3
公开(公告)日：1991-10-16
申请号：EP88306911.4
申请日：1988-07-27
申请人： DIGITAL EQUIPMENT CORPORATION
发明人： Mallary, Michael
IPC分类号： G11B5/31 , G11B5/33 , G11B5/245
CPC分类号： G11B5/372 , G11B5/1278 , G11B5/245 , G11B5/312 , G11B5/3143 , G11B5/332 , G11B2005/0002
摘要： The head includes a read pole (16) disposed between a pair of write poles (12,14) spaced apart to form a gap therebetween. The read pole conducts flux to a flux sensor (22) that is located away from the gap. The head can be utilized for both longitudinal and perpendicular recording and the readback function can be carried out by an inductive coil or flux sensing devices such as a Hall sensor or an MR sensor. The recording head achieves high readback resolution, high write field gradients, and the capability for write wide-read narrow. The read pole and write poles are laminated structures.

10. 发明授权

EP0218532B1 Tête d'enregistrement thermo-magnétique, et procédé de réalisation 失效
标题翻译：热磁记录头及其生产工艺
公开(公告)号：EP0218532B1
公开(公告)日：1991-09-25
申请号：EP86402193.6
申请日：1986-10-03
申请人： THOMSON-CSF
发明人： Lehureau, Jean-Claude , Castera, Jean-Paul , Huijer, Ernst
IPC分类号： G11B5/127 , G11B5/245 , G11B5/49
CPC分类号： G11B5/127 , G11B5/1278 , G11B5/245 , G11B5/4907 , G11B5/4946 , G11B5/4969

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