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公开(公告)号：US07885027B2
公开(公告)日：2011-02-08
申请号：US11516109
申请日：2006-09-05
CPC分类号： G11B20/18 , G11B2220/2516
摘要： Embodiments of the present invention provide a magnetic disk drive in which the error correction capability of ECC is improved without sacrificing the storage capacity. In one embodiment, a data track adopts a format structure in which no data-to-data gap area is formed in data sectors. When one of the data sectors is updated in a state in which the rotational speed of a magnetic disk does not satisfy specified conditions, a leading end area of a succeeding data sector or a trailing end area of a preceding data sector is overwritten by the data sector. If a read error occurs in the overwritten data sector, ERP steps are executed to perform read retry so that the read error is recovered by means of on-the-fly ECC or erasure correction. In the case of the erasure correction, an erasure pointer equivalent to the maximum number of overwritten bytes is set.
摘要翻译： 本发明的实施例提供了一种在不牺牲存储容量的情况下改进ECC的纠错能力的磁盘驱动器。 在一个实施例中，数据轨道采用其中在数据扇区中不形成数据到数据间隙区域的格式结构。 当其中一个数据扇区在磁盘的转速不满足规定条件的状态下更新时，前一数据扇区的后端数据扇区的前端区域或后端区域的前端区域被数据覆盖 部门。 如果覆盖数据扇区发生读取错误，则执行ERP步骤执行读取重试，以便通过即时ECC或擦除校正来恢复读取错误。 在擦除校正的情况下，设置等于最大重写字节数的擦除指针。
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公开(公告)号：US07586707B2
公开(公告)日：2009-09-08
申请号：US11544883
申请日：2006-10-05
IPC分类号： G11B5/09
摘要： Embodiments of the invention provide a magnetic disk drive capable of reducing an area used for a preamble of each data sector to increase the storage capacity. The magnetic disk drive adopts a data-surface servo system. In one embodiment, main preambles are written on a magnetic disk at a frequency of a data clock. Each of data sectors is written with a write clock that is synchronized with a signal obtained by reading the main preamble. The data sectors include sub preambles respectively. When the data sector which has been written in this manner is read, a read clock is synchronized by use of a signal obtained by reading the main preamble, and a signal obtained by reading the sub preamble included in a data sector to be read. The bit length of the sub preamble is shorter than that of the conventional preamble that is used to independently achieve the synchronization. Accordingly, an area whose length is calculated by summing the bit length of the main preamble and that of the sub preamble becomes smaller than an area whose length is calculated by summing the bit length of the conventional preambles.
摘要翻译： 本发明的实施例提供一种磁盘驱动器，其能够减少用于每个数据扇区的前导码的区域以增加存储容量。 磁盘驱动器采用数据表面伺服系统。 在一个实施例中，以数据时钟的频率将主要前导码写入磁盘。 写入每个数据扇区的写入时钟与通过读取主前导码获得的信号同步。 数据扇区分别包括子前导码。 当读取以这种方式写入的数据扇区时，通过使用通过读取主前导码获得的信号和通过读取包括在要读取的数据扇区中的子前导码而获得的信号来同步读取时钟。 子前导码的比特长度比用于独立地实现同步的常规前导码的比特长度短。 因此，通过将主前同步码的比特长度和子前导码的比特长度相加来计算长度的区域比通过对常规前导码比特长度求和来计算长度的区域小。
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公开(公告)号：US20070053094A1
公开(公告)日：2007-03-08
申请号：US11516109
申请日：2006-09-05
CPC分类号： G11B20/18 , G11B2220/2516
摘要： Embodiments of the present invention provide a magnetic disk drive in which the error correction capability of ECC is improved without sacrificing the storage capacity. In one embodiment, a data track adopts a format structure in which no data-to-data gap area is formed in data sectors. When one of the data sectors is updated in a state in which the rotational speed of a magnetic disk does not satisfy specified conditions, a leading end area of a succeeding data sector or a trailing end area of a preceding data sector is overwritten by the data sector. If a read error occurs in the overwritten data sector, ERP steps are executed to perform read retry so that the read error is recovered by means of on-the-fly ECC or erasure correction. In the case of the erasure correction, an erasure pointer equivalent to the maximum number of overwritten bytes is set.
摘要翻译： 本发明的实施例提供了一种在不牺牲存储容量的情况下改进ECC的纠错能力的磁盘驱动器。 在一个实施例中，数据轨道采用其中在数据扇区中不形成数据到数据间隙区域的格式结构。 当其中一个数据扇区在磁盘的转速不满足规定条件的状态下更新时，前一数据扇区的后端数据扇区的前端区域或后端区域的前端区域被数据覆盖 部门。 如果覆盖数据扇区发生读取错误，则执行ERP步骤执行读取重试，以便通过即时ECC或擦除校正来恢复读取错误。 在擦除校正的情况下，设置等于最大重写字节数的擦除指针。
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公开(公告)号：US20070081267A1
公开(公告)日：2007-04-12
申请号：US11544883
申请日：2006-10-05
摘要： Embodiments of the invention provide a magnetic disk drive capable of reducing an area used for a preamble of each data sector to increase the storage capacity. The magnetic disk drive adopts a data-surface servo system. In one embodiment, main preambles are written on a magnetic disk at a frequency of a data clock. Each of data sectors is written with a write clock that is synchronized with a signal obtained by reading the main preamble. The data sectors include sub preambles respectively. When the data sector which has been written in this manner is read, a read clock is synchronized by use of a signal obtained by reading the main preamble, and a signal obtained by reading the sub preamble included in a data sector to be read. The bit length of the sub preamble is shorter than that of the conventional preamble that is used to independently achieve the synchronization. Accordingly, an area whose length is calculated by summing the bit length of the main preamble and that of the sub preamble becomes smaller than an area whose length is calculated by summing the bit length of the conventional preambles.
摘要翻译： 本发明的实施例提供一种磁盘驱动器，其能够减少用于每个数据扇区的前导码的区域以增加存储容量。 磁盘驱动器采用数据表面伺服系统。 在一个实施例中，以数据时钟的频率将主要前导码写入磁盘。 写入每个数据扇区的写入时钟与通过读取主前导码获得的信号同步。 数据扇区分别包括子前导码。 当读取以这种方式写入的数据扇区时，通过使用通过读取主前导码获得的信号和通过读取包括在要读取的数据扇区中的子前导码而获得的信号来同步读取时钟。 子前导码的比特长度比用于独立地实现同步的常规前导码的比特长度短。 因此，通过将主前同步码的比特长度和子前导码的比特长度相加来计算长度的区域比通过对常规前导码比特长度求和来计算长度的区域小。
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公开(公告)号：US20060126208A1
公开(公告)日：2006-06-15
申请号：US11294996
申请日：2005-12-05
申请人： Nobuhito Kitamura , Hitoshi Yoshida
发明人： Nobuhito Kitamura , Hitoshi Yoshida
CPC分类号： G11B20/1217 , G11B5/3967 , G11B5/59655 , G11B2005/0002 , G11B2020/1277 , G11B2020/1287 , G11B2020/1292 , G11B2220/2516
摘要： Embodiments of the invention provide a magnetic disk drive and its control method capable of effectively using the unrecordable area which is caused due to the composite magnetic head's gap between the read head and the write head. In one embodiment, a disk drive comprises a composite magnetic head structured in such a manner that during write the write head WH reaches each servo area earlier than the read head RH, and a read write control unit to control the write and read done by the composite magnetic head. On the disk, common servo data SP to be used both during read and during write, write servo data SW to be used during write and read servo data SR to be used during read are recorded in this order in each servo area. During write, the read write control unit starts the write head recording data at the timing when reading write servo data SW from the servo area is completed.
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6.发明授权Magnetic disk drive, method for registering defective sector, and method for controlling flying height 失效磁盘驱动器，缺陷扇区的登记方法以及控制飞行高度的方法公开(公告)号：US07684138B2
公开(公告)日：2010-03-23
申请号：US11607821
申请日：2006-11-30
申请人： Nobuhito Kitamura , Hitoshi Yoshida
发明人： Nobuhito Kitamura , Hitoshi Yoshida
IPC分类号： G11B5/09
CPC分类号： G11B5/40 , G11B5/6011 , G11B20/00963 , G11B20/1816 , G11B20/1879 , G11B2020/1826 , G11B2020/1893 , G11B2220/2516
摘要： Embodiments in accordance with the present invention relate to detecting a micro-relief that exists on surfaces of a magnetic disk. A phase or frequency of a read signal obtained when data written to a minute projection or a minute concavity on a recording surface of a magnetic disk is read out, differs from that of a read signal obtained when data written to a flat recording surface is read out. The phase progresses in the minute projection, whereas the phase is delayed in the minute concavity. A micro-relief is detected by measuring a deviation value of this frequency, and then defect registration is performed. Embodiments in accordance with the present invention are configured to detect a minute projection whose level does not cause TA. Embodiments in accordance with the present invention may also be configured to provide a highly reliable magnetic disk drive by controlling the flying height in response to a state of a minute projection and that of a minute concavity.
摘要翻译： 根据本发明的实施例涉及检测存在于磁盘表面上的微型浮雕。 读取写入磁盘的记录表面上的微小凸起或微小凹陷的数据时获得的读取信号的相位或频率不同于读取写入平面记录表面的数据时获得的读取信号的相位或频率 出来 相位在微小投影中进行，而相位在微小凹凸中延迟。 通过测量该频率的偏差值来检测微小浮雕，然后进行缺陷配准。 根据本发明的实施例被配置为检测其电平不引起TA的微小投影。 根据本发明的实施例还可以被配置为通过响应于微小突起的状态和微小凹凸的状态来控制飞行高度来提供高度可靠的磁盘驱动器。
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7.发明授权公开(公告)号：US07570446B2
公开(公告)日：2009-08-04
申请号：US11294996
申请日：2005-12-05
申请人： Nobuhito Kitamura , Hitoshi Yoshida
发明人： Nobuhito Kitamura , Hitoshi Yoshida
IPC分类号： G11B5/09
CPC分类号： G11B20/1217 , G11B5/3967 , G11B5/59655 , G11B2005/0002 , G11B2020/1277 , G11B2020/1287 , G11B2020/1292 , G11B2220/2516
摘要： Embodiments of the invention provide a magnetic disk drive and its control method capable of effectively using the unrecordable area which is caused due to the composite magnetic head's gap between the read head and the write head. In one embodiment, a disk drive comprises a composite magnetic head structured in such a manner that during write the write head WH reaches each servo area earlier than the read head RH, and a read write control unit to control the write and read done by the composite magnetic head. On the disk, common servo data SP to be used both during read and during write, write servo data SW to be used during write and read servo data SR to be used during read are recorded in this order in each servo area. During write, the read write control unit starts the write head recording data at the timing when reading write servo data SW from the servo area is completed.
摘要翻译： 本发明的实施例提供一种磁盘驱动器及其控制方法，其能够有效地利用由于读取头和写入头之间的复合磁头的间隙引起的不可记录区域。 在一个实施例中，磁盘驱动器包括复合磁头，其以这样的方式构造，使得在写头期间写入头WH比读取磁头RH更早地到达每个伺服区域;以及读写控制单元，用于控制写入和写操作 复合磁头。 在磁盘上，在读取期间和写入期间都要使用的公用伺服数据SP在读取期间写入和读取伺服数据SR期间使用的写入伺服数据SW以该顺序被记录在每个伺服区域中。 在写入期间，读取写入控制单元在从伺服区域读取写入伺服数据SW完成的定时开始写入头记录数据。
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8.发明申请Magnetic disk drive, method for registering defective sector, and method for controlling flying height 失效磁盘驱动器，缺陷扇区的登记方法以及控制飞行高度的方法公开(公告)号：US20070146920A1
公开(公告)日：2007-06-28
申请号：US11607821
申请日：2006-11-30
申请人： Nobuhito Kitamura , Hitoshi Yoshida
发明人： Nobuhito Kitamura , Hitoshi Yoshida
CPC分类号： G11B5/40 , G11B5/6011 , G11B20/00963 , G11B20/1816 , G11B20/1879 , G11B2020/1826 , G11B2020/1893 , G11B2220/2516
摘要： Embodiments in accordance with the present invention relate to detecting a micro-relief that exists on surfaces of a magnetic disk. A phase or frequency of a read signal obtained when data written to a minute projection or a minute concavity on a recording surface of a magnetic disk is read out, differs from that of a read signal obtained when data written to a flat recording surface is read out. The phase progresses in the minute projection, whereas the phase is delayed in the minute concavity. A micro-relief is detected by measuring a deviation value of this frequency, and then defect registration is performed. Embodiments in accordance with the present invention are configured to detect a minute projection whose level does not cause TA. Embodiments in accordance with the present invention may also be configured to provide a highly reliable magnetic disk drive by controlling the flying height in response to a state of a minute projection and that of a minute concavity.
摘要翻译： 根据本发明的实施例涉及检测存在于磁盘表面上的微型浮雕。 读取写入磁盘的记录表面上的微小凸起或微小凹陷的数据时获得的读取信号的相位或频率不同于读取写入平面记录表面的数据时获得的读取信号的相位或频率 出来 相位在微小投影中进行，而相位在微小凹凸中延迟。 通过测量该频率的偏差值来检测微小浮雕，然后进行缺陷配准。 根据本发明的实施例被配置为检测其电平不引起TA的微小投影。 根据本发明的实施例还可以被配置为通过响应于微小突起的状态和微小凹凸的状态来控制飞行高度来提供高度可靠的磁盘驱动器。
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公开(公告)号：US08124406B2
公开(公告)日：2012-02-28
申请号：US12979823
申请日：2010-12-28
申请人： Kazuma Tomizuka , Hitoshi Yoshida , Kazunori Hanaoka , Mitsuo Oshimura , Isao Ishida , Yoshimi Kuroiwa
发明人： Kazuma Tomizuka , Hitoshi Yoshida , Kazunori Hanaoka , Mitsuo Oshimura , Isao Ishida , Yoshimi Kuroiwa
CPC分类号： A01K67/0275 , A01K67/0271 , A01K67/0276 , A01K67/0278 , A01K2207/15 , A01K2217/00 , A01K2217/05 , A01K2217/075 , A01K2227/105 , A01K2267/01 , A01K2267/03 , C12N15/85 , C12N15/8509 , C12N15/873 , C12N15/90 , C12N15/907 , C12N2800/30
摘要： The present invention relates to a method for producing a modified foreign chromosome(s) or a fragment(s) thereof, which comprises the steps of: (a) preparing a microcell comprising a foreign chromosome(s) or a fragment(s) thereof, and transferring said foreign chromosome(s) or a fragment(s) into a cell with high homologous recombination efficiency through its fusion with said microcell; (b) in said cell with high homologous recombination efficiency, inserting a targeting vector by homologous recombination into a desired site of said foreign chromosome(s) or a fragment(s) thereof, and/or a desired site of a chromosome(s) derived from said cell with high homologous recombination efficiency, thereby marking said desired site; and (c) in said cell with high homologous recombination efficiency, causing deletion and/or translocation to occur at the marked site of said foreign chromosome(s) or a fragment(s) thereof.
摘要翻译： 本发明涉及一种生产修饰的外源染色体或其片段的方法，其包括以下步骤：（a）制备包含外来染色体或其片段的微细胞 并通过与所述微细胞融合将所述外源染色体或片段转移到具有高同源重组效率的细胞中; （b）在具有高同源重组效率的所述细胞中，通过同源重组将靶向载体插入所述外源染色体或其片段的所需位点和/或染色体的所需位点， 衍生自具有高同源重组效率的所述细胞，从而标记所述期望的位点; 和（c）在具有高同源重组效率的所述细胞中，导致在所述外源染色体或其片段的标记位点发生缺失和/或易位。
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10.发明授权公开(公告)号：US08110671B2
公开(公告)日：2012-02-07
申请号：US11797904
申请日：2007-05-08
IPC分类号： C07H21/04
CPC分类号： A01K67/0275 , A01K67/0271 , A01K67/0276 , A01K67/0278 , A01K2207/15 , A01K2217/00 , A01K2217/05 , A01K2217/075 , A01K2227/105 , A01K2267/01 , A01K2267/03 , C07K16/00 , C07K16/18 , C07K2317/21 , C12N15/8509 , C12N15/90 , C12N2517/02 , C12N2800/30
摘要： The specification relates to a method for producing a chimeric non-human animal, which comprises preparing a microcell containing a foreign chromosome(s) or a fragment(s) thereof and transferring the foreign chromosome(s) or fragment(s) thereof into a pluripotent cell by fusion with the microcell; a chimeric non-human animal which can be produced by the above method and its progeny; tissues and cells derived therefrom; and a method for using the same. Further, a pluripotent cell containing a foreign chromosome(s) or a fragment(s) thereof, a method for producing the same, and a method for using the same are also provided. Moreover, a pluripotent cell in which at least two endogenous genes are disrupted, and a method for producing the same by homologous recombination are provided.
摘要翻译： 本说明书涉及嵌合非人动物的制造方法，其包括制备含有外来染色体或其片段的微细胞，并将其外来的染色体或片段转移到 多细胞与微细胞融合; 可以通过上述方法及其后代产生的嵌合非人动物; 从其衍生的组织和细胞; 及其使用方法。 此外，还提供了含有外来染色体或其片段的多能细胞，其制备方法及其使用方法。 此外，提供其中至少两个内源基因被破坏的多能细胞，以及通过同源重组产生其的方法。
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