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1.发明授权Reproducing apparatus and reproducing method for reproducing data by scanning slant tracks using a plurality of reproducing heads 失效用于通过使用多个再现头扫描倾斜轨迹来再现数据的再现装置和再现方法公开(公告)号：US07057845B2
公开(公告)日：2006-06-06
申请号：US10757278
申请日：2004-01-14
申请人： Shinichi Fukuda , Tadashi Ozue
发明人： Shinichi Fukuda , Tadashi Ozue
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： First, data is read from tracks formed on a tape-shaped recording medium by heads disposed on a rotary drum, to measure error rates. Next, of the tracks formed on the tape-shaped recording medium, a worst track suffering the highest error rate is detected based on the error rates thus measured. Then, a pair of reproducing heads that can reproduce the worst track thus detected at the lowest error rates is detected from the measured error rates. Thereafter, tracking servo control is performed such that the worst track can be scanned by the pair of reproducing heads. As a result, a reproducing apparatus capable of proper reproduction even when recorded tracks undergo variations in width and reproducing heads are erroneously mounted.
摘要翻译： 首先，通过设置在旋转鼓上的磁头从形成在带状记录介质上的磁道读取数据，以测量错误率。 接下来，形成在带状记录介质上的轨道中，基于这样测量的错误率来检测遭受最高错误率的最差轨道。 然后，从测量的错误率中检测出可以再现以最低错误率检测到的最差磁道的一对重放磁头。 此后，执行跟踪伺服控制，使得可以通过一对再现头扫描最差的轨迹。 结果，即使当记录的轨道经历宽度变化和再现头时也能适当再现的再现装置被错误地安装。
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2.发明授权Reproducing apparatus and reproducing method for reproducing data by scanning slant tracks using a plurality of reproducing heads 失效用于通过使用多个再现头扫描倾斜轨迹来再现数据的再现装置和再现方法公开(公告)号：US07161760B2
公开(公告)日：2007-01-09
申请号：US11205947
申请日：2005-08-17
申请人： Shinichi Fukuda , Tadashi Ozue
发明人： Shinichi Fukuda , Tadashi Ozue
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： First, data is read from tracks formed on a tape-shaped recording medium by heads disposed on a rotary drum, to measure error rates. Next, of the tracks formed on the tape-shaped recording medium, a worst track suffering the highest error rate is detected based on the error rates thus measured. Then, a pair of reproducing heads that can reproduce the worst track thus detected at the lowest error rates is detected from the measured error rates. Thereafter, tracking servo control is performed such that the worst track can be scanned by the pair of reproducing heads. As a result, a reproducing apparatus capable of proper reproduction even when recorded tracks undergo variations in width and reproducing heads are erroneously mounted.
摘要翻译： 首先，通过设置在旋转鼓上的磁头从形成在带状记录介质上的磁道读取数据，以测量错误率。 接下来，形成在带状记录介质上的轨道中，基于这样测量的错误率来检测遭受最高错误率的最差轨道。 然后，从测量的错误率中检测出可以再现以最低错误率检测到的最差磁道的一对重放磁头。 此后，执行跟踪伺服控制，使得可以通过一对再现头扫描最差的轨迹。 结果，即使当记录的轨道经历宽度变化和再现头时也能适当再现的再现装置被错误地安装。
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公开(公告)号：US20060039078A1
公开(公告)日：2006-02-23
申请号：US11205947
申请日：2005-08-17
申请人： Shinichi Fukuda , Tadashi Ozue
发明人： Shinichi Fukuda , Tadashi Ozue
CPC分类号： G11B5/584
摘要： First, data is read from tracks formed on a tape-shaped recording medium by heads disposed on a rotary drum, to measure error rates. Next, of the tracks formed on the tape-shaped recording medium, a worst track suffering the highest error rate is detected based on the error rates thus measured. Then, a pair of reproducing heads that can reproduce the worst track thus detected at the lowest error rates is detected from the measured error rates. Thereafter, tracking servo control is performed such that the worst track can be scanned by the pair of reproducing heads. As a result, a reproducing apparatus capable of proper reproduction even when recorded tracks undergo variations in width and reproducing heads are erroneously mounted.
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公开(公告)号：US06515836B2
公开(公告)日：2003-02-04
申请号：US09876405
申请日：2001-06-07
申请人： Tadashi Ozue , Shinichi Fukuda , Toshio Shirai
发明人： Tadashi Ozue , Shinichi Fukuda , Toshio Shirai
IPC分类号： G11B531
CPC分类号： G11B5/0086 , G11B5/035 , G11B2005/0016
摘要： A magneto-resistive effect type magnetic head (12) has a head width Wh greater than the track width Wt of a magnetic tape (5), as measured in the width direction of the tape (5). The head (12) has a magneto-resistive effect element, which has a magnetism-detecting section arranged at the prescribed azimuth angle. A signal reproduced from the magnetic tape as the head (12) is moved while off-tracked in the widthwise direction Wh of the recording track T1. The signal has a specific characteristic that falls within a predetermined range for a reference value, provided that it has been generated from the magnetism the head (12) has detected over its effective width We.
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5.发明授权Magnetic head with rectangular-shaped planar spiral coil and leading core width smaller than trailing core width 失效具有矩形平面螺旋线圈的磁头和引导芯宽小于后芯宽度公开(公告)号：US07457079B2
公开(公告)日：2008-11-25
申请号：US10606108
申请日：2003-06-25
申请人： Kazushi Ogawa , Teiichi Miyauchi , Tadashi Ozue
发明人： Kazushi Ogawa , Teiichi Miyauchi , Tadashi Ozue
CPC分类号： G11B5/3967 , G11B5/23 , G11B5/2452 , G11B5/3106 , G11B5/3109 , G11B5/3116 , G11B5/312 , G11B5/313 , G11B5/3146 , G11B5/3156 , G11B5/3903 , G11B5/4886 , G11B5/4893 , G11B5/53
摘要： A thin film magnetic recording head comprises a substrate, a first magnetic core formed on the substrate, a second magnetic core having the front end face with a magnetic gap with respect to the front end face of the first magnetic core, and a coil for developing magnetic flux between the front end portions of the magnetic cores. A width of the second magnetic core at the front end portion thereof is chosen to be smaller than that of the first magnetic core. The second magnetic core is at a leading position relative to the second magnetic core in a traveling direction on a recording medium. In such configuration, it is possible to reduce side erase due to recording magnetic flux fringing and to achieve high density of magnetic recording while maintaining the conventional fabrication steps for the thin film magnetic recording head, thereby avoiding the problem in the fabrication.
摘要翻译： 薄膜磁记录头包括基板，形成在基板上的第一磁芯，具有相对于第一磁芯的前端面具有磁隙的前端面的第二磁芯和用于显影的线圈 磁芯的前端部之间的磁通量。 第二磁芯在其前端部分的宽度被选择为小于第一磁芯的宽度。 第二磁芯相对于第二磁芯在记录介质上的行进方向上处于前导位置。 在这种结构中，由于记录磁通边缘而可能减少侧面擦除并且在保持薄膜磁记录头的常规制造步骤的同时实现高密度的磁记录，从而避免了制造中的问题。
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6.发明授权Magnetic recording/reproducing head with head elements displaced in both head width and lamination directions 失效磁头记录/再现头，其头部元件在头部宽度和层压方向上移位公开(公告)号：US07324303B2
公开(公告)日：2008-01-29
申请号：US11653806
申请日：2007-01-16
申请人： Tadashi Ozue , Yutaka Soda
发明人： Tadashi Ozue , Yutaka Soda
CPC分类号： G11B5/3951 , G11B5/115 , G11B5/295 , G11B5/3103 , G11B5/3116 , G11B5/3163 , G11B5/3903 , G11B5/3912 , G11B5/3967 , G11B5/488 , G11B5/4886 , G11B5/4893 , G11B5/4976 , G11B5/531 , G11B5/534
摘要： A magnetic recording/reproducing head having a plurality of magnetic head elements for multi-channeling capable of achieving high density recording/reproducing capability, including: a plurality of magnetic recording/reproducing head layers each including magnetic recording/reproducing head elements fabricated by a thin film process and interposed between two insulating/magnetic shielding layers laminated on a non-magnetic substrate; the total of magnetic recording/reproducing head elements formed therein are displaced from each other in a head width direction, and each magnetic recording/reproducing head layer has a plurality of magnetic recording/reproducing head elements formed at a predetermined pitch.
摘要翻译： 一种具有多个能够实现高密度记录/再现能力的多通道磁头元件的磁记录/再现头，包括：多个磁记录/再现头层，每个磁记录/再现头层包括由薄的 并且介于层叠在非磁性基板上的两个绝缘/磁屏蔽层之间; 形成在其中的磁记录/再现头元件的总和在磁头宽度方向上彼此偏移，并且每个磁记录/再现磁头层具有以预定间距形成的多个磁记录/再现磁头元件。
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7.发明申请Magnetic recording/reproducing head with head elements displaced in both head width and lamination directions 失效磁头记录/再现头，其头部元件在头部宽度和层压方向上移位公开(公告)号：US20070109682A1
公开(公告)日：2007-05-17
申请号：US11653806
申请日：2007-01-16
申请人： Tadashi Ozue , Yutaka Soda
发明人： Tadashi Ozue , Yutaka Soda
CPC分类号： G11B5/3951 , G11B5/115 , G11B5/295 , G11B5/3103 , G11B5/3116 , G11B5/3163 , G11B5/3903 , G11B5/3912 , G11B5/3967 , G11B5/488 , G11B5/4886 , G11B5/4893 , G11B5/4976 , G11B5/531 , G11B5/534
摘要： A magnetic recording/reproducing head having a plurality of magnetic head elements for multi-channeling capable of achieving high density recording/reproducing capability, including: a plurality of magnetic recording/reproducing head layers each including magnetic recording/reproducing head elements fabricated by a thin film process and interposed between two insulating/magnetic shielding layers laminated on a non-magnetic substrate; the total of magnetic recording/reproducing head elements formed therein are displaced from each other in a head width direction, and each magnetic recording/reproducing head layer has a plurality of magnetic recording/reproducing head elements formed at a predetermined pitch.
摘要翻译： 一种具有多个能够实现高密度记录/再现能力的多通道磁头元件的磁记录/再现头，包括：多个磁记录/再现头层，每个磁记录/再现头层包括由薄的 并且介于层叠在非磁性基板上的两个绝缘/磁屏蔽层之间; 形成在其中的磁记录/再现头元件的总和在磁头宽度方向上彼此偏移，并且每个磁记录/再现磁头层具有以预定间距形成的多个磁记录/再现磁头元件。
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8.发明授权Tape drive head with lower core layer side inclined at angle equal to or greater than azimuth angle and aligned with upper core layer edge 失效带驱动头，下芯层侧倾斜角度等于或大于方位角，并与上芯层边缘对齐公开(公告)号：US07002777B2
公开(公告)日：2006-02-21
申请号：US10673004
申请日：2003-09-26
申请人： Kazushi Ogawa , Tadashi Ozue , Teiichi Miyauchi
发明人： Kazushi Ogawa , Tadashi Ozue , Teiichi Miyauchi
CPC分类号： G11B5/3116 , G11B5/00813 , G11B5/187
摘要： A thin film magnetic head, in which: a magnetic gap thereof is disposed slantingly relative to a direction orthogonal to a scanning direction of the head corresponding to an azimuth angle; an upper magnetic core layer is positioned on a leading side preceding a lower magnetic core layer in a scanning direction of the head, a protrusion on the lower magnetic core layer has an inclined side surface inclined at an angle equal to or greater than the azimuth angle at least on one side surface in a direction of a track width thereof, and at least one edge of a side adjacent to the magnetic gap of a protrusion on the upper magnetic core layer is aligned on a line drawn extending from the inclined side surface of the lower magnetic core layer, thereby suppressing occurrence of side erasing in a magnetic recording medium during azimuth recording.
摘要翻译： 一种薄膜磁头，其中：其磁隙相对于与方位角对应的扫描方向正交的方向倾斜地设置; 上磁芯层位于头部扫描方向上的下磁芯层前方的前方，下磁芯层上的突起具有以等于或大于方位角的角度倾斜的倾斜侧面 至少在其一个侧表面上在其轨道宽度的方向上，并且与上磁芯层上的突起的磁隙相邻的一侧的至少一个边缘对准在从倾斜侧表面延伸的线上 下磁芯层，从而在方位记录期间抑制磁记录介质中的边擦除的发生。
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9.发明申请Recording and reproducing apparatus having magnetic recording medium possessing a specific range of surface resistivity for GMR head 审中-公开具有磁记录介质的记录和再现装置，其具有用于GMR头的特定表面电阻率范围公开(公告)号：US20050282039A1
公开(公告)日：2005-12-22
申请号：US11209378
申请日：2005-08-23
申请人： Hiroki Tetsukawa , Tadashi Ozue , Yutaka Souda
发明人： Hiroki Tetsukawa , Tadashi Ozue , Yutaka Souda
摘要： Disclosed is a magnetic recording medium, which comprises a metal magnetic thin film formed on a nonmagnetic support member, surface resistivity of the metal magnetic thin film is in the range of 1×103 Ω/sq.-1×107 Ω/sq., a value of Mr·t (a product of amount of residual magnetization (Mr) and film thickness (t)) is within the range of 4 mA-13 mA, and amount of residual magnetization (Mr) is within the range of 160 kA/m-360 kA/m. As a result, in the reproduction using GMR head, it is possible to suppress noise and to prevent saturation of GMR head and electrostatic destruction.
摘要翻译： 公开了一种磁记录介质，其包括形成在非磁性支撑构件上的金属磁性薄膜，金属磁性薄膜的表面电阻率在1×10 3Ω/ sq.-1×10 -3的范围内， SUP≥7Ω/ sq，Mrt（剩余磁化量（Mr）和膜厚度（t）的乘积）的值在4mA-13mA的范围内， 剩余磁化强度（Mr）在160kA / m-360kA / m的范围内。 结果，在使用GMR头的再现中，可以抑制噪声并防止GMR头的饱和和静电破坏。
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10.发明申请公开(公告)号：US20050174689A1
公开(公告)日：2005-08-11
申请号：US11103211
申请日：2005-04-11
申请人： Tadashi Ozue , Yutaka Soda
发明人： Tadashi Ozue , Yutaka Soda
CPC分类号： G11B5/3951 , G11B5/115 , G11B5/295 , G11B5/3103 , G11B5/3116 , G11B5/3163 , G11B5/3903 , G11B5/3912 , G11B5/3967 , G11B5/488 , G11B5/4886 , G11B5/4893 , G11B5/4976 , G11B5/531 , G11B5/534
摘要： A magnetic recording/reproducing head having a plurality of magnetic head elements for multi-channeling capable of achieving high density recording/reproducing capability, including: a plurality of magnetic recording/reproducing head layers each including magnetic recording/reproducing head elements fabricated by a thin film process and interposed between two insulating/magnetic shielding layers laminated on a non-magnetic substrate; the total of magnetic recording/reproducing head elements formed therein are displaced from each other in a head width direction, and each magnetic recording/reproducing head layer has a plurality of magnetic recording/reproducing head elements formed at a predetermined pitch.
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