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71. 发明授权

US6081401A Step gap head tracking servo 失效
标题翻译：步距缝头跟踪伺服
公开(公告)号：US6081401A
公开(公告)日：2000-06-27
申请号：US996739
申请日：1997-12-23
申请人： George R. Varian
发明人： George R. Varian
IPC分类号： G11B5/23 , G11B5/55 , G11B5/56 , G11B5/584 , G11B5/596 , G11B5/58
CPC分类号： G11B5/596 , G11B5/584 , G11B5/59605 , G11B5/23 , G11B5/5526 , G11B5/56
摘要： A read/write magnetic head includes a step offset formed in the gap of the head which accordingly generates recorded transitions in a recording medium which also contain a step offset in each successively recorded transition along the length of a track. On subsequent playback of the track by the same or similar step gap head, fine transverse mistracking of the head as it follows the track results in a corresponding echo signal being generated along with the main readout signal. The amplitude of the echo signal is indicative of the degree of fine mistracking while the location of the echo signal relative to the main signal is indicative of the direction of mistracking. Fine mistracking correction is provided by circuits which detect the amount and direction of mistracking and supply an error signal to a tracking servo to correct the mistracking.
摘要翻译：读/写磁头包括形成在磁头的间隙中的阶跃偏移，其相应地在记录介质中产生记录的转变，该记录介质还沿着轨道的长度在每个连续记录的转变中包含阶跃偏移。在随后通过相同或相似的步进间隙头回放轨道时，头跟随轨迹的细小的横向误差产生与主读出信号一起产生的对应的回波信号。回波信号的振幅表示细小错误的程度，而回波信号相对于主信号的位置指示了错误的方向。通过检测误差的量和方向的电路提供了良好的错误纠正，并向跟踪伺服器提供误差信号，以纠正错误。

72. 发明授权

US5995340A Magnetic head for vector recording/play 失效
标题翻译：用于矢量记录/播放的磁头
公开(公告)号：US5995340A
公开(公告)日：1999-11-30
申请号：US958194
申请日：1997-10-27
申请人： Chung-hun Ha
发明人： Chung-hun Ha
IPC分类号： G11B5/012 , G11B5/02 , G11B5/09 , G11B5/127 , G11B5/17 , G11B5/23 , G11B5/187
CPC分类号： G11B5/17 , G11B5/012 , G11B5/02 , G11B5/09 , G11B5/127 , G11B5/23
摘要： A magnetic head for vector recording/playing capable of recording in multiple directions to increase recording density. In the magnetic head according to the present invention, a body is formed to have four poles, each of which is wound with a coil. Accordingly, 3-bit data, in which magnetic domains are arranged in eight directions may be recorded/reproduced, to thereby record a large amount information in one recording area of the track, and reduce the data transfer rate.
摘要翻译：用于矢量记录/播放的磁头，能够在多个方向上记录以增加记录密度。在根据本发明的磁头中，主体形成为具有四个磁极，每个磁极缠绕有线圈。因此，可以记录/再现磁畴布置在八个方向上的3位数据，从而在磁道的一个记录区域中记录大量信息，并且降低数据传送速率。

73. 发明授权

US5949626A Magnetic head having a C-type core and an I-type core 失效
标题翻译：具有C型芯和I型芯的磁头
公开(公告)号：US5949626A
公开(公告)日：1999-09-07
申请号：US901631
申请日：1997-07-28
申请人： Masashi Sato , Hiroshi Sampei
发明人： Masashi Sato , Hiroshi Sampei
IPC分类号： G11B5/127 , G11B5/10 , G11B5/133 , G11B5/187 , G11B5/193 , G11B5/23 , G11B5/255
CPC分类号： G11B5/1335 , G11B5/10 , G11B5/193 , G11B5/1874 , G11B5/232 , G11B5/255
摘要： A magnetic head 10 includes a pair of a C-type core 11 and an I-type core 12 which are butt-joined together, a gap section 14 defined between the butt-joined surfaces of the cores, track width regulating grooves 11b, 12b which are formed in a magnetic medium slide surface so as to limit the width of the gap 14 to a predetermined width, and bonding glass 16 bonded to the track width regulating grooves. The I-type core has track width regulating grooves which extend from the butt-joined surface to the outer side surface within at least the magnetic medium slide surface, and a reinforcing member 15 is attached to the outer side surface of the I-type core, so that the magnetic medium slide surface is extended.
摘要翻译：磁头10包括对接在一起的一对C型芯11和I型芯12，限定在芯的对接面之间的间隙部14，轨道宽度调节槽11b，12b 它们形成在磁性介质滑动表面中，以便将间隙14的宽度限制到预定宽度，以及粘合到轨道宽度调节槽的玻璃16。 I型芯具有轨道宽度调节槽，其至少在磁性介质滑动表面内从对接表面延伸到外侧表面，并且加强构件15附接到I型芯的外侧表面，使得磁性介质滑动面延伸。

74. 发明授权

US5949624A Horizontal shared-pole magnetic read/write head having polarization conductor disabling write pole 失效
标题翻译：具有极化导体禁止写入极的水平共享磁极读/写头
公开(公告)号：US5949624A
公开(公告)日：1999-09-07
申请号：US943779
申请日：1997-10-03
申请人： Randall G. Simmons , Robert E. Jones, Jr.
发明人： Randall G. Simmons , Robert E. Jones, Jr.
IPC分类号： G11B5/00 , G11B5/23 , G11B5/245 , G11B5/31 , G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/23 , G11B5/3183 , G11B5/3906 , G11B5/3967 , G11B2005/0008 , G11B2005/0013 , G11B2005/3996 , G11B5/245
摘要： An inductive-write magnetoresistive-read horizontal head for magnetic recording having two polarization conductors. The two polarization conductors are used to simultaneously activate a MR sensor and to disable the write head during the read back process to eliminate the secondary read back signal from the inductive-write head. During the read process, the current through a first conductor biases the MR stripe while current through the second conductor generates an applied field to switch the magnetization of the Permalloy (NiFe) in the write head pole and reduce the permeability. The head incorporates write-wide read-narrow head attributes and has the reliability advantages associated with yoke or recessed MR or GMR structures. The magnetoresistive stripe may be disposed directly in the gap of the heads or it may be recessed.
摘要翻译：用于具有两个偏振导体的磁记录的感应写入磁阻读取水平头。两个偏振导体用于同时激活MR传感器并且在回读过程期间禁用写入头以消除来自电感写入头的二次回读信号。在读取过程中，通过第一导体的电流偏置MR条，同时通过第二导体的电流产生施加的场，以切换写磁头极中的坡莫合金（NiFe）的磁化并降低磁导率。头部包含写入宽度窄的头部属性，并具有与磁轭或嵌入式MR或GMR结构相关的可靠性优势。磁阻条可以直接设置在磁头的间隙中，也可以是凹陷的。

75. 发明授权

US5894386A Magnetic write/read head having at least two conductors crossing a gap at different portions thereof so that each conductor determines the width of an information element 失效
标题翻译：磁写/读头具有至少两个导体在其不同部分处与间隙交叉，使得每个导体确定信息元素的宽度
公开(公告)号：US5894386A
公开(公告)日：1999-04-13
申请号：US927682
申请日：1997-09-11
申请人： Joseph Colineau
发明人： Joseph Colineau
IPC分类号： G11B5/31 , G11B5/127 , G11B5/17 , G11B5/245 , G11B5/29 , G11B5/48 , G11B5/49 , G11B5/23
CPC分类号： G11B5/17 , G11B5/127 , G11B5/245 , G11B5/4893 , G11B5/4984 , G11B5/313
摘要： This magnetic head essentially has at least one excitation conductor located below two layers made of magnetic material constituting the magnetic poles of the head and separated by a gap. The positioning of the conductor is such that it forms an angle different from 0.degree. or 90.degree. with respect to the direction of the gap. Different embodiments of the invention are provided for, notably with several conductors to set up a matrix-type control. Application to write/read magnetic heads.
摘要翻译：该磁头基本上具有至少一个位于由构成磁头的磁性材料的磁性材料制成的两层以下的激励导体，并由间隙隔开。导体的定位是相对于间隙的方向形成不同于0°或90°的角度。提供了本发明的不同实施例，特别是用几个导体来建立矩阵型控制。写入/读取磁头的应用

76. 发明授权

US5875081A Magnetic head 失效
标题翻译：磁头
公开(公告)号：US5875081A
公开(公告)日：1999-02-23
申请号：US914900
申请日：1997-08-20
申请人： Atsushi Suzuki , Masatoshi Hayakawa , Toru Matsunaga , Takashi Tamura , Akira Urai
发明人： Atsushi Suzuki , Masatoshi Hayakawa , Toru Matsunaga , Takashi Tamura , Akira Urai
IPC分类号： G11B5/133 , G11B5/187 , G11B5/193 , G11B5/255 , G11B5/23
CPC分类号： G11B5/1878 , G11B5/133 , G11B5/1335 , G11B5/1871 , G11B5/193 , G11B5/255
摘要： A magnetic head having a pair of magnetic core halves integrally bonded to each other, each magnetic core half being formed by a single-crystal ferrite piece and a polycrystal ferrite piece bonded together to constitute a junction ferrite, with a magnetic gap being defined between abutting surfaces of the magnetic core halves. The single-crystal ferrite pieces are arranged towards the abutting surfaces of the magnetic core halves and the polycrystal ferrite pieces are arranged on the opposite side of the abutting surfaces with respect to the single-crystal ferrite pieces. Preferably, the surface of the single-crystal ferrite piece having sliding contact with the magnetic recording medium, the gap surface of the single-crystal ferrite piece and the surface of the single-crystal ferrite piece corresponding to the lateral surface of the magnetic head are the (211) plane, (111) plane and the (110) plane, respectively. The directions of the crystal axes within the plane (100) are symmetrical to each other on both sides of the magnetic gap. The magnetic head is low in sliding noise and superior in electro-magnetic conversion characteristics. In addition, the magnetic recording medium is superior in abrasion characteristics since the partial advancing abrasion is prohibited from occurring on its surface configured to have sliding contact with the magnetic recording medium.
摘要翻译：一种磁头，其具有一对一体地结合的磁芯半部，每个磁芯半部由单晶铁氧体片和多晶铁素体片形成，以结合在一起构成结铁氧体，磁隙限定在邻接磁芯半部的表面。单晶铁氧体片朝向磁芯半部的邻接面配置，多晶铁素体片相对于单晶铁氧体片配置在抵接面的相对侧。优选地，与磁记录介质滑动接触的单晶铁氧体片的表面，单晶铁氧体片的间隙表面和与磁头的侧表面相对应的单晶铁氧体片的表面是（211）面，（111）面和（110）面。平面（100）内的<100>晶轴的方向在磁隙的两侧彼此对称。磁头的滑动噪声低，电磁转换特性优异。此外，磁记录介质的磨损性能优异，因为在被配置为与磁记录介质滑动接触的表面上禁止发生部分前进磨损。

77. 发明授权

US5844745A Magnetic head assembly having two heads with the magnetic layer of one head angled between 80.degree. to 100.degree. relative to the gap of the other head 失效
标题翻译：磁头组件具有两个磁头，一个磁头的磁性层相对于另一个磁头的间隙在80°至100°之间变化
公开(公告)号：US5844745A
公开(公告)日：1998-12-01
申请号：US828529
申请日：1997-03-31
申请人： Hiroyuki Ohmori , Tetsuya Yakamoto , Yasunari Sugiyama , Mitsuharu Shoji
发明人： Hiroyuki Ohmori , Tetsuya Yakamoto , Yasunari Sugiyama , Mitsuharu Shoji
IPC分类号： G11B5/265 , G11B5/008 , G11B5/147 , G11B5/187 , G11B5/23 , G11B5/29 , G11B5/48 , G11B5/53 , G11B5/027
CPC分类号： G11B5/1872 , G11B5/00865 , G11B5/187 , G11B5/29 , G11B5/488 , G11B5/531 , G11B5/534
摘要： A magnetic head assembly having two heads with the magnetic layer of one angled between 80 to 100.degree. of the gap of the other, and method and apparatus using same. The angle formed on a magnetic tape by side surfaces of a laminated magnetic film of the first magnetic head and the surfaces of a magnetic gap of the second magnetic head are between 80 and 100.degree..
摘要翻译：一种磁头组件，其具有两个磁头，磁性层的一个角度在另一个的间隙的80至100°之间，以及使用其的方法和装置。由第一磁头的叠层磁性膜的侧面和第二磁头的磁隙表面在磁带上形成的角度在80°和100°之间。

78. 发明授权

US5826326A Method for manufacturing a composite metal and ferrite head transducer 失效
标题翻译：复合金属和铁氧体磁头传感器的制造方法
公开(公告)号：US5826326A
公开(公告)日：1998-10-27
申请号：US485522
申请日：1995-06-07
申请人： Beverley R. Gooch , Rex Niedermeyer
发明人： Beverley R. Gooch , Rex Niedermeyer
IPC分类号： G11B5/10 , G11B5/127 , G11B5/17 , G11B5/23 , G11B5/235 , G11B5/255 , H01F7/06
CPC分类号： G11B5/10 , G11B5/1274 , G11B5/1276 , G11B5/17 , G11B5/255 , G11B5/1272 , G11B5/232 , G11B5/235 , Y10T29/49043
摘要： A magnetic transducer is batch fabricated from a pair of confronting elongate composite block substrates each formed of a thin cap of non-magnetic material bonded to a much larger block of magnetic material, such as ferrite. An intermediate winding groove is formed in proximate relation to the non-magnetic material along the length of one or both composite block substrates. One (or both) of the substrates is provided with a plurality of parallel spaced V-shaped grooves oriented in a direction perpendicular to the winding groove, wherein adjacent grooves form therebetween track width defining lands. A core layer of high permeability magnetic material, such as Alfesil material, is deposited over the edges whereby magnetic poles are formed of the edges. A gap layer of insulating material is deposited on the edges over the high permeability magnetic material. Two of the composite block substrates are placed with the edges in aligned abutting relation and are assembled by glass bonding. Individual transducers are sliced from the bonded assembly of substrates and are lapped and polished and a coil is added to provide the finished transducers. Alternative embodiments may employ winding and V-shaped grooves in only one composite block substrate with the matching substrate being flat, and/or may employ either rectangular solid or wedge-shaped non-magnetic caps bonded to the ferrite blocks.
摘要翻译：磁传感器由一对相对的细长复合块基片批量制造，每个相对的细长复合阻挡基片由非磁性材料薄盖结合到较大的磁性材料块如铁素体上。中间卷绕槽沿着一个或两个复合块基板的长度与非磁性材料邻接地形成。一个（或两个）基板设置有沿垂直于卷绕槽的方向定向的多个平行隔开的V形槽，其中相邻的槽形成在其间的轨道宽度限定区域。高磁导率磁性材料的芯层如Alfesil材料沉积在边缘上，由此由边缘形成磁极。绝缘材料的间隙层沉积在高磁导率磁性材料上的边缘上。两个复合块基材以边缘对齐的邻接关系放置，并通过玻璃粘合装配。单独的换能器从基底的结合组件切片并且被研磨和抛光，并且添加线圈以提供完成的换能器。替代实施例可以在仅一个复合块基板中采用绕组和V形槽，匹配衬底是平坦的，和/或可以采用与铁氧体块结合的矩形固体或楔形非磁性帽。

79. 发明授权

US5802700A Method of making a planarized thin film magnetic write head with submicron trackwidth 失效
标题翻译：制造具有亚微米轨道宽度的平面化薄膜磁写头的方法
公开(公告)号：US5802700A
公开(公告)日：1998-09-08
申请号：US469728
申请日：1995-06-06
申请人： Mao-Min Chen , Kochan Ju , Neil Leslie Robertson , Hugo Alberto Emilio Santini
发明人： Mao-Min Chen , Kochan Ju , Neil Leslie Robertson , Hugo Alberto Emilio Santini
IPC分类号： G11B5/187 , G11B5/23 , G11B5/235 , G11B5/31 , G11B5/147
CPC分类号： G11B5/3103 , G11B5/3116 , G11B5/3133 , G11B5/3146 , G11B5/1872 , G11B5/232 , G11B5/235 , Y10T29/49044 , Y10T29/49046 , Y10T29/49052
摘要： A method is provided for making a thin film magnetic write head with a notch structure located on top of one of two pole layers. The notch structure is a generally U-shaped thin film layer which forms a trench inside the U for the containment of one or more pole tip layers in the pole tip region of the head. The notch structure has front surfaces at the tips of the legs of the U which lie in a plane that forms a part of the air bearing surface. The thickness of the notch layer is substantially equal to the thickness or thicknesses of the one or more pole tip layers located in the trench. A method of manufacturing the write head includes forming a very thin photoresist layer for defining the notch structure. The notch structure is well-defined which in turn allows the one or more pole tip layers to be well-defined with a very narrow trackwidth in the trench.
摘要翻译：提供了一种用于制造具有位于两个极层之一的顶部上的凹口结构的薄膜磁性写入头的方法。凹口结构是大致U形的薄膜层，其在U形内部形成沟槽，用于容纳头部的磁极尖端区域中的一个或多个极尖端层。凹口结构在位于形成空气轴承表面的一部分的平面中的U形腿的顶端具有前表面。切口层的厚度基本上等于位于沟槽中的一个或多个极尖端层的厚度或厚度。一种制造写入头的方法包括形成非常薄的光致抗蚀剂层以限定凹口结构。凹口结构是明确的，这又允许一个或多个极尖端层在沟槽中具有很窄的轨道宽度。

80. 发明授权

US5793578A Thin film induction recording head having an inset first insulation layer that defines zero throat height and pole tip apex angle 失效
标题翻译：薄膜感应记录头具有插入的第一绝缘层，其限定零喉部高度和极尖顶角
公开(公告)号：US5793578A
公开(公告)日：1998-08-11
申请号：US752012
申请日：1996-11-15
申请人： David Eugene Heim , Hugo Alberto Emilio Santini
发明人： David Eugene Heim , Hugo Alberto Emilio Santini
IPC分类号： G11B5/23 , G11B5/31 , G11B5/33 , G11B5/39 , G11B5/47
CPC分类号： G11B5/3967 , G11B5/3116 , G11B5/313 , G11B5/3163 , G11B5/332 , G11B5/232
摘要： The present invention uncouples the dependence between the zero throat height and the flare point of a write head by recessing the first insulation layer within the first pole piece layer. The first pole piece layer and the first insulation layer have planar surfaces which preferably lie in a common plane, the zero throat height being defined at the point where the planar surface of the first pole piece layer first meets the planar surface of the first insulation layer within the head. It is also at this point that the first and second pole piece layers separate from one another. Accordingly, the zero throat height can be accurately placed relative to the stripe height of a magneto-resistive (MR) sensor. Further, when a photoresist layer is spun onto the partially completed head for the construction of the pole tip of the second pole piece light directed into the photoresist layer for photo-imaging the pole tip does not reflect into the photoresist layer adjacent the pole tip. Accordingly, there is substantially no reflective notching of the photoresist layer because of the flatness of the surfaces of the first pole piece layer and the first insulation layer thereby permitting construction of a well defined second pole tip.
摘要翻译：本发明通过在第一极片层内凹陷第一绝缘层来解耦零喉部高度与写入头的扩张点之间的依赖关系。第一极片层和第一绝缘层具有优选位于公共平面中的平坦表面，零喉部高度限定在第一极片层的平坦表面首先接触第一绝缘层的平坦表面的点处在头内。在这一点上，第一和第二极片层彼此分离。因此，可以相对于磁阻（MR）传感器的条带高度准确地放置零喉部高度。此外，当光致抗蚀剂层被旋转到部分完成的头部上用于构造第二极靴的极尖的光引导到用于光成像的光致抗蚀剂层中时，极尖不会反射到邻近极尖的光致抗蚀剂层中。因此，由于第一极片层和第一绝缘层的表面的平坦度，因此允许构造良好限定的第二极端，因此基本上不存在光致抗蚀剂层的反射性凹陷。

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