公开(公告)号：EP2657936A1

公开(公告)日：2013-10-30

申请号：EP13165607.6

申请日：2013-04-26

申请人： Seagate Technology LLC

发明人： Erden, Mehmet Fatih ,  Gadbois, Jason

IPC分类号： G11B5/48 ,  G11B5/55 ,  G11B5/596 ,  G11B5/31

CPC分类号： G11B5/4813 ,  G11B5/29 ,  G11B5/3974 ,  G11B5/3977 ,  G11B5/4826 ,  G11B5/4886 ,  G11B5/4976 ,  G11B5/5552 ,  G11B5/5582 ,  G11B5/596

摘要： Apparatus for two dimensional data reading. In accordance with some embodiments, a magnetic read element has a plurality of read sensors positioned symmetrically about a pivot point with at least two of the read sensors configured to concurrently read two dimensional user data while being immune to skew angle misalignment.

摘要翻译： 二维数据读取装置。 根据一些实施例，磁读取元件具有多个读取传感器，所述多个读取传感器围绕枢转点对称地定位，其中至少两个读取传感器被配置为同时读取二维用户数据，同时不受斜角偏差的影响。

公开(公告)号：EP2026337A1

公开(公告)日：2009-02-18

申请号：EP08013472.9

申请日：2008-07-25

申请人： Fujifilm Corporation ,  TDK Corporation

发明人： Noguchi, Hitoshi ,  Endo, Yasushi ,  Shimizu, Osamu ,  Yoshida, Makoto ,  Maejima, Kazuhiko ,  Kawai, Mitsuyoshi

IPC分类号： G11B5/62 ,  G11B5/708

CPC分类号： G11B5/70 ,  G11B5/00826 ,  G11B5/29 ,  G11B5/3106 ,  G11B5/3906 ,  G11B5/70678 ,  G11B5/7085 ,  G11B5/71 ,  G11B5/714

摘要： The magnetic signal reproduction system comprises a magnetic recording medium comprising a magnetic layer comprising a ferromagnetic powder and a binder on a nonmagnetic support and a reproduction head, wherein a number of protrusions equal to or greater than 10 nm in height on the magnetic layer surface, as measured by an atomic force microscope, ranges from 50 to 2500/10,000 µm 2 , a quantity of lubricant on the magnetic layer surface, denoted as a surface lubricant index, ranges from 0.5 to 5.0, a surface abrasive occupancy of the magnetic layer ranges from 2 to 20 percent, the reproduction head is a magnetoresistive magnetic head comprising a spin-valve layer, the spin-valve layer comprises a magnetization free layer, a magnetization pinned layer and an antiferromagnetic layer, and the antiferromagnetic layer is comprised of alloy comprising iridium and manganese, and the reproduction head comes in sliding contact with the magnetic recording medium during signal reproduction.

摘要翻译： 该磁信号再现系统包括磁记录介质，该磁记录介质包括在非磁性载体和再现头上的包括铁磁粉末和粘合剂的磁性层，其中在磁性层表面上的高度等于或大于10nm的多个突起， 如通过原子力显微镜测量的，范围从50至2500 /10,000μm2，磁性层表面上的润滑剂量（表面润滑指数）表示为0.5至5.0，磁性层的表面磨料占有率为 2％到20％，再现头是包括自旋阀层的磁阻磁头，自旋阀层包括磁化自由层，磁化固定层和反铁磁层，并且反铁磁层由包含铱 和锰，并且再现头在信号再现期间与磁记录介质滑动接触。

公开(公告)号：EP1941501A1

公开(公告)日：2008-07-09

申请号：EP06779544.3

申请日：2006-09-26

申请人： Barnes, Charles Frederick James ,  Jones, Gary Brian

发明人： Barnes, Charles Frederick James ,  Jones, Gary Brian

IPC分类号： G11B5/00 ,  G11B5/29 ,  G11B5/49 ,  G11B21/00 ,  H04Q11/00 ,  H03K17/62 ,  H03K17/693 ,  H04L12/56

CPC分类号： G11B21/00 ,  G11B5/00 ,  G11B5/29 ,  G11B5/49

摘要： A data storage device comprises: a data member comprising means for storing data on a surface thereof; and a data retrieval member. The data retrieval member comprises: a plurality of heads for reading data from the data member; and a plurality of storage buffers each arranged to store data read from one of more of said heads. The retrieval member is arranged so as to output the contents of a plurality of said storage buffers sequentially. This allows fast and efficient reading of the data stored. Also disclosed is a telecommunications switch which may employ such a storage device. The switch dynamically assigns data packets to nodes as an output path becomes available to minimise queuing delays.

公开(公告)号：EP0694910B1

公开(公告)日：2000-01-19

申请号：EP95401685.3

申请日：1995-07-13

申请人： THOMSON-CSF

发明人： Lehureau, Jean-Claude

IPC分类号： G11B5/29 ,  G11B5/49

CPC分类号： G11B5/4984 ,  G11B5/29 ,  G11B5/3183 ,  G11B5/4976

公开(公告)号：EP0894319A1

公开(公告)日：1999-02-03

申请号：EP97922339.0

申请日：1997-04-18

申请人： STORAGE TECHNOLOGY CORPORATION

发明人： SUNDARAM, Ramesh

IPC分类号： G11B5

CPC分类号： G11B5/31 ,  G11B5/29 ,  G11B5/3106 ,  G11B5/313

摘要： The present invention provides a tape head (30) with reduced pole-tip recession. A recessed substrate (37) and a closure (32) of the tape head are separated by a plurality of layers, which include, for example, a bottom layer (35), a recessed bottom pole (86), a write gap (88), a shared pole (84), a read gap (60), a top pole (82) and a top layer (48). The recessed bottom pole is positioned in the recess of the substrate. By utilizing the recessed substrate and the recessed bottom pole, the thickness of the overcoat layer is reduced, thereby reducing the distance between the substrate and the closure at an air-bearing surface of the recording head. With the present invention, wear is reduced, thereby reducing pole tip recession.

公开(公告)号：EP0614173A3

公开(公告)日：1995-01-11

申请号：EP94103058.7

申请日：1994-03-01

申请人： SONY CORPORATION

发明人： Ohmori, Hiroyuki, c/o Sony Corporation ,  Yamamoto, Tetsuya, c/o Sony Corporation ,  Sugiyama, Yasunari, c/o Sony Corporation

IPC分类号： G11B5/31 ,  G11B5/127

CPC分类号： G11B5/21 ,  G11B5/1274 ,  G11B5/17 ,  G11B5/29 ,  G11B5/531

摘要： A magnetic head is disclosed in which a pair of magnetic core halves, each having a magnetic metal film formed in the vicinity of at least a substrate surface facing a magnetic recording medium, are abutted to each other for defining a magnetic gap (18) between the magnetic metal films, wherein a recess (10) for forming a coil (13) is formed in an abutting surface of at least one of the magnetic core halves and the coil (13) formed by a thin film forming technique is arranged within the recess (10). A multi-channel magnetic head is also disclosed which includes a plurality of magnetic heads having different azimuth angles of the magnetic gaps, wherein each magnetic head is formed by abutting a pair of magnetic core halves to each other, each of the magnetic core halves having a magnetic metal film formed in the vicinity of at least a substrate surface facing a magnetic recording medium, for defining a magnetic gap between the magnetic metal films, and wherein a recess for forming a coil is formed in the abutting surface of at least one of the magnetic core halves, and the coil is formed in the recess by thin film forming technique. The methods for producing the magnetic head and the multi-channel magnetic head are also disclosed.

摘要翻译： 公开了一种磁头，其中在磁性记录介质的至少基板表面附近形成有磁性金属膜的一对磁芯半体彼此抵接，以在磁性金属 膜，其中在所述凹部内布置有用于形成线圈的凹部，所述凹部形成在至少一个所述磁芯半部和通过薄膜形成技术形成的所述线圈的邻接表面中。 还公开了一种多通道磁头，其包括具有磁隙的不同方位角的多个磁头，其中每个磁头通过将一对磁芯半体彼此邻接而形成，每个磁芯半部具有 形成在至少面对磁记录介质的基板表面附近的磁性金属膜，用于限定磁性金属膜之间的磁隙，并且其中用于形成线圈的凹部形成在至少一个 磁芯半部，并且通过薄膜形成技术在凹部中形成线圈。 还公开了用于制造磁头和多通道磁头的方法。

公开(公告)号：EP0562093A1

公开(公告)日：1993-09-29

申请号：EP92922029.0

申请日：1992-10-09

申请人： EASTMAN KODAK COMPANY

发明人： JEFFERS, Frederick, John ,  ROLKER, John

IPC分类号： G11B5

CPC分类号： G11B5/596 ,  G11B5/23 ,  G11B5/29 ,  G11B5/584

摘要： L'invention concerne un appareil de commande d'alignement comprenant un support d'enregistrement magnétique (disque ou bande) comportant une piste d'asservissement spécialisée sur laquelle est enregistré un signal d'asservissement ayant une longueur d'onde spatiale fixe, et un appareil de lecture magnétique comprenant une tête d'alignement d'asservissement dotée d'un entrefer de transduction conique allongé transversal par rapport à la piste d'asservissement spécialisée. L'entrefer de transduction présente (1) une longueur d'entrefer magnétique relativement faible, au niveau d'une première extrémité de l'entrefer, laquelle est inférieure à la longueur d'onde spatiale du signal enregistré, et (2) une longueur d'entrefer magnétique relativement longue, au niveau d'une seconde extrémité opposée de l'entrefer, laquelle est supérieure à la longueur d'onde spatiale du signal d'asservissement enregistré. La tête d'asservissement se trouve dans une position d'alignement voulue lorsque le segment de l'entrefer conique aligné avec la piste d'asservissement présente une longueur d'entrefer magnétique égale à la longueur d'onde spatiale du signal d'asservissement.

公开(公告)号：EP0374129A2

公开(公告)日：1990-06-20

申请号：EP90101241.9

申请日：1985-03-13

申请人： OLYMPUS OPTICAL CO., LTD.

发明人： Yunoki, Yutaka

IPC分类号： G11B19/02 ,  G11B5/012

CPC分类号： H04N1/2129 ,  G11B5/012 ,  G11B5/02 ,  G11B5/024 ,  G11B5/187 ,  G11B5/2655 ,  G11B5/29 ,  G11B5/4826 ,  G11B5/4886 ,  G11B19/02 ,  G11B19/28 ,  G11B20/10 ,  G11B27/029 ,  H04N1/2112 ,  H04N5/92 ,  H04N2101/00 ,  Y10S358/906

摘要： Disclosed is a image information recording apparatus wherein a pulse corresponding to rotation of a magnetic disk (1) is obtained by detecting a PG-yoke signal as a rotational posi­tion detection index in the disk (1) by a PG-coil (5) as a pulse detection means. The recording/reproduction control is performed by a control circuit (17) as erase recor­ding/reproduction control means operating in accordance with the pulse. The erase and recording/reproduction operations of data are performed with respect to the disk (1) by a com­posite magnetic head (6) controlled by the erase recor­ding/reproduction control means, said control means provi­ding change-over timing signals enabling successively repea­ting erasing and recording operations in synchronism with PG-pulses on a single recording track of the magnetic disk.

公开(公告)号：EP0178898A3

公开(公告)日：1988-03-30

申请号：EP85307401

申请日：1985-10-15

申请人： International Business Machines Corporation

发明人： Argumedo, Armando Jesus ,  Schmalhorst, Joseph Martin

IPC分类号： G11B05/31 ,  G11B05/29 ,  G11B05/39

CPC分类号： G11B5/3903 ,  G11B5/127 ,  G11B5/17 ,  G11B5/29 ,  G11B5/3116 ,  G11B5/312 ,  G11B5/3967

摘要： An inductive magnetic transducer for a multiple track head has a soft magnetic material closure pad (24) formed across a multiturn coil (22). The closure pad (24) has a width corresponding to the track width at the front gap of the transducer and a width at the back gap area (12) of the transducer which is less than the width of the innermost turn of the coil (22).

摘要翻译： 用于多轨头的感应式磁换能器具有横跨多圈线圈（22）形成的软磁材料封闭垫（24）。 闭合垫（24）的宽度对应于换能器的前间隙处的轨道宽度，并且换能器的后间隙区域（12）处的宽度小于线圈（22）的最内圈的宽度 ）。

公开(公告)号：EP0180218A3

公开(公告)日：1987-11-25

申请号：EP85113846

申请日：1985-10-31

申请人： SANYO ELECTRIC CO., LTD.

发明人： Yoshisato, Yorinobu ,  Yasuda, Isao ,  Yoshikawa, Hideki ,  Kubota, Kenji ,  Taketa, Kazuhiko ,  Takahashi, Kazuhiko

IPC分类号： G11B05/29 ,  G11B05/10 ,  G11B05/115 ,  G11B05/105 ,  G11B05/17

CPC分类号： G11B5/29 ,  G11B5/115 ,  G11B5/17 ,  Y10T29/49055 ,  Y10T29/49066

摘要： A magnetic head which comprises a pair of head chips 25, 26 each composed of a pair of plate-like magnetic cores 2,20, (21, 22) superposed on and joined to each other with a spacer 15 interposed therebetween and having a gap G1 (G2) at the junction, a pair of base plates joined to the pair of head chips 25, 26 individually and positioned on opposite sides of and in parallel to a plane containing the gaps G1, G2, each of the magnetic core having at one end thereof a head 31 with a small width substantially equal to the width of tracks and an end portion of increased width opposite to the head, a shield member 12 interposed between the head chips 25, 26 at the head portions, a stud portion 3 provided on at least one of the pair of magnetic cores and projecting toward the other core, and a coil 4 provided around the stud portion 3. A process is also disclosed for producing such magnetic heads wherein the pair of magnetic cores are positioned close to each other, and the gaps G1 and G2 are accurately positioned on the same plane.