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1. 发明申请

US20110149437A1 METHOD AND APPARATUS FOR READ AND WRITE DATA IN A DISK DRIVE WITH DISCRETE TRACK DISK 审中-公开
标题翻译：用于具有离散轨道盘的磁盘驱动器中的读取和写入数据的方法和装置
公开(公告)号：US20110149437A1
公开(公告)日：2011-06-23
申请号：US12870265
申请日：2010-08-27
申请人： Kazuto KASHIWAGI
发明人： Kazuto KASHIWAGI
IPC分类号： G11B5/127
CPC分类号： G11B5/012 , B82Y10/00 , G11B5/743 , G11B5/82 , Y10T29/49025
摘要： According to one embodiment, a disk drive includes a disk and a data read/write module. The disk has a disk substrate, tracks and non-recording areas. The tracks and the non-recording areas are formed on the disk substrate and arranged in the radial direction of the disk. The tracks are magnetic layers and have a recording area each. The non-recording areas are made of non-magnetic layers and arranged between the tracks. Thus, valid recording area and invalid recording areas are provided in each track, at a predetermined ratio. The data read/write module is configured to write data in or read data from the valid recording areas, but not in or from the invalid recording areas.
摘要翻译：根据一个实施例，磁盘驱动器包括磁盘和数据读/写模块。磁盘具有磁盘基板，轨道和非记录区域。轨道和非记录区域形成在盘基片上并沿盘的径向布置。磁道是磁性层，并具有各自的记录区域。非记录区域由非磁性层制成并布置在轨道之间。因此，以预定的比例在每个轨道中提供有效记录区域和无效记录区域。数据读/写模块被配置为将数据写入或从有效记录区域读取数据，但不在无效记录区域或从无效记录区域读取数据。

2. 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。

3. 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。

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

US20130182349A1 INFORMATION RECORDING APPARATUS AND INFORMATION WRITING METHOD 有权
标题翻译：信息记录装置和信息写作方法
公开(公告)号：US20130182349A1
公开(公告)日：2013-07-18
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： G11B5/09
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。

6. 发明申请

US20110255189A1 METHOD OF DETECTING TOUCHDOWN OF MAGNETIC HEAD USING TIMESTAMPS, AND MAGNETIC DISK DRIVE TO WHICH THE METHOD IS APPLIED 审中-公开
标题翻译：使用时间戳检测磁头的触发方法和应用该方法的磁盘驱动器
公开(公告)号：US20110255189A1
公开(公告)日：2011-10-20
申请号：US12984517
申请日：2011-01-04
申请人： Motomichi SHIBANO , Kazuto Kashiwagi , Kazuhito Shimomura
发明人： Motomichi SHIBANO , Kazuto Kashiwagi , Kazuhito Shimomura
IPC分类号： G11B27/36 , G11B21/02
CPC分类号： G11B5/6011 , G11B5/607 , G11B5/6076
摘要： According to one embodiment, a method of detecting contact of a magnetic head with a magnetic disk by changing the dynamic flying height of the magnetic head in a magnetic disk drive is disclosed. The method can detect a change in the rotational speed of the magnetic disk. The method can detect the contact of the magnetic head with the magnetic disk based on the detected change in the rotational speed.
摘要翻译：根据一个实施例，公开了一种通过改变磁盘驱动器中的磁头的动态飞行高度来检测磁头与磁盘的接触的方法。该方法可以检测磁盘的转速的变化。该方法可以基于检测到的转速变化来检测磁头与磁盘的接触。

7. 发明授权

US07894155B2 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：US07894155B2
公开(公告)日：2011-02-22
申请号：US11819916
申请日：2007-06-29
申请人： Masatoshi Sakurai , Kazuto Kashiwagi , Akira Kikitsu
发明人： Masatoshi Sakurai , Kazuto Kashiwagi , Akira Kikitsu
IPC分类号： G11B21/02
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。

8. 发明申请

US20110019306A1 MAGNETIC DISK APPARATUS 有权
标题翻译：磁盘设备
公开(公告)号：US20110019306A1
公开(公告)日：2011-01-27
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： G11B5/127
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。

9. 发明申请

US20080002295A1 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：US20080002295A1
公开(公告)日：2008-01-03
申请号：US11819916
申请日：2007-06-29
申请人： Masatoshi Sakurai , Kazuto Kashiwagi , Akira Kikitsu
发明人： Masatoshi Sakurai , Kazuto Kashiwagi , Akira Kikitsu
IPC分类号： G11B5/74 , G11B23/00
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。

10. 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.

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