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1. 发明授权

US08773797B2 Information recording apparatus and information writing method 有权
标题翻译：信息记录装置和信息写入方法
公开(公告)号：US08773797B2
公开(公告)日：2014-07-08
申请号：US13443025
申请日：2012-04-10
申请人： Naoki Tagami , Kazuto Kashiwagi , Takayuki Kawabe
发明人： Naoki Tagami , Kazuto Kashiwagi , Takayuki Kawabe
IPC分类号： G11B20/16
CPC分类号： G11B5/59616 , G11B5/746 , G11B20/10222 , G11B2220/2516
摘要： According to one embodiment, there is provided an information recording apparatus that writes information onto a magnetic recording medium including a plurality of fine magnetic grains. The information recording apparatus includes a random number generation unit, a modulation unit, and a processing unit. The random number generation unit generates a random number bit value. The modulation unit modulates a period of a basic clock according to the random number bit value generated, and generates a modulated clock. The processing unit writes or reads information with respect to the magnetic recording medium in synchronization with the modulated clock generated.
摘要翻译：根据一个实施例，提供了一种信息记录装置，其将信息写入到包括多个细小颗粒的磁记录介质上。信息记录装置包括随机数生成单元，调制单元和处理单元。随机数生成单元生成随机数位值。调制单元根据生成的随机数位值来调制基本时钟的周期，并生成调制时钟。处理单元与生成的调制时钟同步地写入或读取关于磁记录介质的信息。

2. 发明授权

US08643970B2 Magnetic recording apparatus and recording method of magnetic recording apparatus 失效
标题翻译：磁记录装置和磁记录装置的记录方法
公开(公告)号：US08643970B2
公开(公告)日：2014-02-04
申请号：US13357444
申请日：2012-01-24
申请人： Naoki Tagami , Kazuto Kashiwagi , Akihiro Itakura , Haruhiko Izumi , Masatoshi Sakurai
发明人： Naoki Tagami , Kazuto Kashiwagi , Akihiro Itakura , Haruhiko Izumi , Masatoshi Sakurai
IPC分类号： G11B5/02
CPC分类号： G11B20/10388 , B82Y10/00 , G11B5/012 , G11B5/09 , G11B20/10398 , G11B2220/2516 , G11B2220/252
摘要： According to one embodiment, a magnetic recording apparatus configured to record information onto a magnetic recording medium by a shingled write recording method, the magnetic recording apparatus includes: a recording head configured to cover a plurality of dot arrays and an end portion of which is situated at one dot array of a recording target; an actuator configured to move the recording head by one array after the recording to one dot array by the recording head; and a controller configured to perform recording compensation of the magnetic dot based on prestored recording data of a peripheral dot of a magnetic dot when input user data is recorded to the magnetic dot.
摘要翻译：根据一个实施例，一种磁记录装置，被配置为通过带状写入记录方法将信息记录到磁记录介质上，该磁记录装置包括：记录头，被配置为覆盖多个点阵列，并且其端部位于在记录目标的一个点阵列处; 致动器，被配置为通过记录头将记录头在记录之后移动一个阵列到一个点阵列; 以及控制器，被配置为当输入的用户数据被记录到磁点时，基于磁点的外围点的预先存储的记录数据来执行磁点的记录补偿。

3. 发明申请

US20120002316A1 MAGNETIC RECORDING APPARATUS AND METHOD OF TESTING MAGNETIC RECORDING APPARATUS 审中-公开
标题翻译：磁记录装置及测试磁记录装置的方法
公开(公告)号：US20120002316A1
公开(公告)日：2012-01-05
申请号：US13174439
申请日：2011-06-30
申请人： Masatoshi SAKURAI , Kazuto Kashiwagi , Naoki Tagami
发明人： Masatoshi SAKURAI , Kazuto Kashiwagi , Naoki Tagami
IPC分类号： G11B5/48 , G11B27/36
CPC分类号： G11B20/1816 , B82Y10/00 , G11B5/455 , G11B5/6011 , G11B5/746 , G11B19/048 , G11B27/36
摘要： According to one embodiment, there is provided a magnetic recording apparatus including a head slider including read and write elements, and a magnetic recording medium including magnetically recordable recording tracks with a width L1, a wide land track with a width L2 larger than the width L1 of the recording track, and non-recording sections with a width G1 each provided between adjacent recording tracks. The width L1 of the recording track is smaller than a bottom read width BRW of the read and write elements, and the width L2 of the wide land track is larger than the bottom read width BRW of the read and write elements.
摘要翻译：根据一个实施例，提供一种磁记录装置，其包括具有读和写元件的磁头滑块，以及包括具有宽度L1的磁性可记录记录磁道的磁记录介质，宽度L2大于宽度L1的宽的磁道轨迹以及各自设置在相邻记录轨道之间的具有宽度G1的非记录部分。记录磁道的宽度L1小于读取和写入元件的底部读取宽度BRW，并且宽焊盘磁道的宽度L2大于读取和写入元件的底部读取宽度BRW。

4. 发明授权

US08699163B2 Magnetic disk drive and data buffering method applied to the same 有权
标题翻译：应用磁盘驱动器和数据缓冲方法
公开(公告)号：US08699163B2
公开(公告)日：2014-04-15
申请号：US13551343
申请日：2012-07-17
申请人： Kazuto Kashiwagi , Takayuki Kawabe
发明人： Kazuto Kashiwagi , Takayuki Kawabe
IPC分类号： G11B5/09
CPC分类号： G11B5/09 , G11B5/012 , G11B5/5547 , G11B20/10527 , G11B2020/1062 , G11B2220/2516
摘要： According to one embodiment, there is provided a method of temporarily storing data in a buffer. The method determines whether data written based on sequential writing is of a first type or a second type in data type. The method stores the written data in association with the determined data type in the buffer. The method further controls the buffer so that the data of the first type stored in the buffer may be held in the buffer for a length of time twice as long as time T1 corresponding to one revolution of a disk and the data of the second type stored in the buffer may be held in the buffer for the time T1.
摘要翻译：根据一个实施例，提供了一种在缓冲器中临时存储数据的方法。该方法确定基于顺序写入写入的数据是数据类型中的第一类型还是第二类型。该方法将写入的数据与确定的数据类型相关联地存储在缓冲器中。该方法进一步控制缓冲器，使得存储在缓冲器中的第一类型的数据可以被保持在缓冲器中的时间长度与盘的一圈相对应的时间T1的两倍，并且存储第二类型的数据在缓冲区中可能会在缓冲区中保存T1。

5. 发明申请

US20110085268A1 MAGNETIC RECORDING MEDIUM, METHOD OF FABRICATING THE SAME, AND MAGNETIC RECORDING APPARATUS 有权
标题翻译：磁记录介质，其制造方法和磁记录装置
公开(公告)号：US20110085268A1
公开(公告)日：2011-04-14
申请号：US12973171
申请日：2010-12-20
申请人： Masatoshi Sakurai , Kazuto Kashiwagi , Akira Kikitsu
发明人： Masatoshi Sakurai , Kazuto Kashiwagi , Akira Kikitsu
IPC分类号： G11B5/82 , G11B5/84
CPC分类号： G11B5/59688 , B82Y10/00 , G11B5/743 , G11B5/855
摘要： According to one embodiment, there is provided a magnetic recording medium having a data region in which a plurality of recording tracks, each including magnetic dots arrayed in a down-track direction with a pitch p, are formed in a cross-track direction, and a servo region including a preamble in which a plurality of lines of magnetic dots, which are arrayed in a cross-track direction with a pitch p, are formed at equal intervals in the down-track direction.
摘要翻译：根据一个实施例，提供了一种具有数据区域的磁记录介质，其中沿横向方向形成多个记录磁道，每个记录磁道包括沿下行方向排列的间距为p的磁点，并且在下行轨道方向上以等间隔形成包括前导码的伺服区域，其中排列在具有间距p的交叉轨道方向上的多个磁迹线。

6. 发明授权

US08298690B2 Magnetic recording medium, method and apparatus for manufacturing magnetic recording apparatus 有权
标题翻译：磁记录介质，制造磁记录装置的方法和装置
公开(公告)号：US08298690B2
公开(公告)日：2012-10-30
申请号：US12292564
申请日：2008-11-20
申请人： Hiroyuki Hieda , Kazuto Kashiwagi , Akira Kikitsu , Yousuke Isowaki , Yoshiyuki Kamata
发明人： Hiroyuki Hieda , Kazuto Kashiwagi , Akira Kikitsu , Yousuke Isowaki , Yoshiyuki Kamata
IPC分类号： G11B5/65
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/743 , G11B5/746 , G11B5/855 , G11B5/865 , G11B2005/0029
摘要： A magnetic recording medium includes a disk substrate, and recording cells arrayed on the disk substrate in a track direction, the recording cells includes a ferromagnetic pattern and a magnetic pattern formed on one of two sidewalls of the ferromagnetic pattern in the track direction and having a lower crystalline magnetic anisotropy constant Ku than that of the ferromagnetic pattern.
摘要翻译：磁记录介质包括磁盘基板和磁道基板上沿轨道方向排列的记录单元，记录单元包括铁磁图案和形成在轨道方向的铁磁图案的两个侧壁中的一个侧壁上的磁性图案，并且具有比铁磁性图案低的结晶磁各向异性常数Ku。

7. 发明申请

US20120063028A1 MAGNETIC RECORDING APPARATUS 审中-公开
标题翻译：磁记录装置
公开(公告)号：US20120063028A1
公开(公告)日：2012-03-15
申请号：US13209192
申请日：2011-08-12
申请人： Masatoshi SAKURAI , Akihiro Itakura , Kazuto Kashiwagi
发明人： Masatoshi SAKURAI , Akihiro Itakura , Kazuto Kashiwagi
IPC分类号： G11B5/55
CPC分类号： G11B5/5526 , B82Y10/00 , G11B5/012 , G11B5/746 , G11B5/855
摘要： According to one embodiment, there is provided a magnetic recording apparatus including a bit-patterned medium having a data area including magnetic dot rows each of which includes magnetic dots, a magnetic head having a width covering a plurality of magnetic dot rows, and an actuator configured to actuate the magnetic head in a cross-track direction. The magnetic dots included in a n-th magnetic dot row have a higher coercivity than the magnetic dots included in a (n+1)-th magnetic dot row.
摘要翻译：根据一个实施例，提供了一种磁记录装置，其包括位图形介质，其具有包括磁点列的数据区，每个磁点行包括磁点，具有覆盖多个磁点行的宽度的磁头和致动器被构造成在横向方向上致动磁头。包含在第n个磁性点列中的磁性点具有比包括在第（n + 1）个磁头列中的磁性点更高的矫顽力。

8. 发明授权

US08842392B2 Magnetic recording medium and magnetic recording apparatus 有权
标题翻译：磁记录介质和磁记录装置
公开(公告)号：US08842392B2
公开(公告)日：2014-09-23
申请号：US13372367
申请日：2012-02-13
申请人： Kazuto Kashiwagi , Makoto Asakura , Haruhiko Izumi , Masatoshi Sakurai
发明人： Kazuto Kashiwagi , Makoto Asakura , Haruhiko Izumi , Masatoshi Sakurai
IPC分类号： G11B5/82
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/59688
摘要： According to one embodiment, a magnetic recording medium includes: a data area on which a plurality of first magnetic dots are arranged at predetermined positions to record information; a servo area on which a plurality of second magnetic dots for specifying the positions of said plurality of first magnetic dots are arranged at predetermined positions; and servo frames configured so that a frequency of said servo frames is 2N per circumference of said medium having a radius, that said servo frames are radially discontinuous, and that said servo frame and a space-area, on which no servo frames exist, are alternately radially arranged at a cycle W.
摘要翻译：根据一个实施例，一种磁记录介质包括：数据区，多个第一磁点排列在预定位置以记录信息; 伺服区域，其上用于指定所述多个第一磁性点的位置的多个第二磁性点布置在预定位置; 以及伺服框架，其被配置为使得所述伺服帧的频率为具有半径的所述介质的每圆周为2N，所述伺服框架是径向不连续的，并且所述伺服框架和不存在伺服框架的空间区域是交替地以循环W.

9. 发明授权

US08289645B2 Magnetic disk apparatus 有权
标题翻译：磁盘装置
公开(公告)号：US08289645B2
公开(公告)日：2012-10-16
申请号：US12897281
申请日：2010-10-04
申请人： Masatoshi Sakurai , Akira Kikitsu , Kazuto Kashiwagi
发明人： Masatoshi Sakurai , Akira Kikitsu , Kazuto Kashiwagi
IPC分类号： G11B21/02
CPC分类号： G11B5/59627 , B82Y10/00 , G11B5/74 , G11B5/743 , G11B5/746 , G11B5/82
摘要： According to one embodiment, there is provided a magnetic disk apparatus having a magnetic disk having magnetic dot lines each including magnetic dots arrayed at equal intervals in a down track direction, and a read/write head which uses a plurality of adjacent magnetic dot lines as one track and sequentially performs read and write on the magnetic dots included in the magnetic dot lines constituting the track, in which the magnetic dots included in each of the magnetic dot lines in each track of the magnetic disk are displaced in the down track direction from the magnetic dots included in the adjacent dot line in the track depending on a possible skew angle between the read/write head and the track so that the magnetic dots are sequentially accessed by the read/write head.
摘要翻译：根据一个实施例，提供了一种具有磁盘的磁盘装置，该磁盘具有磁点线，每个磁点线包括沿下行方向等间隔排列的磁点，以及使用多个相邻磁点线的读/写头作为一个磁道，并顺序地对构成磁道的磁点线中包括的磁点进行读和写，其中包括在磁盘的每个磁迹中的每个磁点线中的磁点在下行轨道方向上移位，根据读/写头和轨道之间的可能的倾斜角度，包括在轨道中的相邻点线中的磁点，使得磁点由读/写头顺序地访问。

10. 发明申请

US20090321388A1 Imprint stamper, manufacturing method of imprint stamper, magnetic recording medium, manufacturing method of magnetic recording medium and magnetic disk apparatus 审中-公开
标题翻译：印刷压模，压印模具的制造方法，磁记录介质，磁记录介质的制造方法和磁盘装置
公开(公告)号：US20090321388A1
公开(公告)日：2009-12-31
申请号：US12458107
申请日：2009-06-30
申请人： Takeshi Okino , Shinobu Sugimura , Kazuto Kashiwagi , Yoshiyuki Kamata
发明人： Takeshi Okino , Shinobu Sugimura , Kazuto Kashiwagi , Yoshiyuki Kamata
IPC分类号： C25D1/10 , B29C43/02 , C23F1/00
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/743
摘要： An imprint stamper for manufacturing a magnetic recording medium with a plurality of recording bits includes a plurality of first concave portions to form the recording bits, a wall portion provided so as to separate the first concave portions from each other, and a second concave portion provided to the wall portion so as to connect one of the first concave portions and the other of the first concave portions adjacent to one of the first concave portions.
摘要翻译：用于制造具有多个记录位的磁记录介质的压印模具包括多个用于形成记录位的第一凹部，设置成将第一凹部彼此分开的壁部分和设置在第一凹部中的第二凹部连接到所述壁部，以将所述第一凹部中的一个与所述第一凹部中的一个相邻的所述第一凹部中的一个连接。

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