Magnetic recording medium
    23.
    发明授权
    Magnetic recording medium 有权
    磁记录介质

    公开(公告)号:US07229707B2

    公开(公告)日:2007-06-12

    申请号:US10444962

    申请日:2003-05-27

    CPC classification number: G11B5/7325

    Abstract: A magnetic recording medium including a magnetic recording layer and a substrate that supports the magnetic recording layer is provided. At least two underlayers including a nonmetallic underlayer are placed between the magnetic recording layer and the substrate. The perpendicular magnetic recording medium uses a double-layered or tri-layered underlayer. Accordingly, a perpendicular magnetic recording layer can have a high perpendicular magnetic anisotropic energy constant Ku due to a third underlayer and have small crystal grains and a small exchange coupling due to a second underlayer below the third underlayer. Thus, the perpendicular magnetic recording layer can have a good thermal stability, high-density recording characteristics, and excellent SNR characteristics.

    Abstract translation: 提供了包括磁记录层和支撑磁记录层的基片的磁记录介质。 至少两个包括非金属底层的底层被放置在磁记录层和基片之间。 垂直磁记录介质使用双层或三层底层。 因此,垂直磁记录层由于第三底层而具有高的垂直磁各向异性能量常数Ku,并且由于第三底层以下的第二底层而具有小的晶粒和小的交换耦合。 因此,垂直磁记录层可以具有良好的热稳定性,高密度记录特性和优异的SNR特性。

    Rate-7/8 maximum transition run code encoding and decoding method and apparatus
    25.
    发明授权
    Rate-7/8 maximum transition run code encoding and decoding method and apparatus 失效
    Rate-7/8最大过渡码编码和解码方法及装置

    公开(公告)号:US07006019B2

    公开(公告)日:2006-02-28

    申请号:US10973831

    申请日:2004-10-27

    CPC classification number: H03M5/145 G11B20/1426

    Abstract: A rate 7/8 MTR code encoding/decoding method and apparatus. The encoding method includes: generating a rate-7/8 MTR code for inputting 7-bit data and outputting a predetermined 8-bit codeword; checking whether codewords satisfy a predetermined constraint condition by connecting the 8-bit codeword and a subsequent 8-bit codeword; and if the codewords do not violate the constraint condition, not converting the codewords. The decoding method includes: checking whether the codewords satisfy a predetermined MTR constraint condition by connecting a current 8-bit codeword c(k) and a subsequent 8-bit codeword c(k+1); if the codewords violate the constraint condition, converting the codewords, and if the codewords do not violate the constraint condition, not converting the codewords; and decoding each converted 8-bit codeword into 7-bit data using a predetermined MTR code. Data is reliably reproduced with high write density, and large amounts of data are stored in and reproduced from a magnetic recording information storage medium.

    Abstract translation: 速率7/8 MTR码编码/解码方法和装置。 编码方法包括:生成用于输入7位数据并输出预定8位码字的速率-7 / 8MTR码; 通过连接8位码字和随后的8位码字来检查码字是否满足预定约束条件; 并且如果码字不违反约束条件,则不转换码字。 解码方法包括:通过连接当前的8位码字c(k)和随后的8位码字c(k + 1)来检查码字是否满足预定的MTR约束条件; 如果码字违反约束条件,转换码字,并且如果码字不违反约束条件,则不转换码字; 以及使用预定的MTR码将每个转换的8位码字解码为7位数据。 数据以高写入密度被可靠地再现,并且大量数据被存储在磁记录信息存储介质中并从磁记录信息存储介质再现。

    Rate-7/8 maximum transition run code encoding and decoding method and apparatus
    26.
    发明申请
    Rate-7/8 maximum transition run code encoding and decoding method and apparatus 失效
    Rate-7/8最大过渡码编码和解码方法及装置

    公开(公告)号:US20050116843A1

    公开(公告)日:2005-06-02

    申请号:US10973831

    申请日:2004-10-27

    CPC classification number: H03M5/145 G11B20/1426

    Abstract: A rate 7/8 MTR code encoding/decoding method and apparatus. The encoding method includes: generating a rate-7/8 MTR code for inputting 7-bit data and outputting a predetermined 8-bit codeword; checking whether codewords satisfy a predetermined constraint condition by connecting the 8-bit codeword and a subsequent 8-bit codeword; and if the codewords do not violate the constraint condition, not converting the codewords. The decoding method includes: checking whether the codewords satisfy a predetermined MTR constraint condition by connecting a current 8-bit codeword c(k) and a subsequent 8-bit codeword c(k+1); if the codewords violate the constraint condition, converting the codewords, and if the codewords do not violate the constraint condition, not converting the codewords; and decoding each converted 8-bit codeword into 7-bit data using a predetermined MTR code. Data is reliably reproduced with high write density, and large amounts of data are stored in and reproduced from a magnetic recording information storage medium.

    Abstract translation: 速率7/8 MTR码编码/解码方法和装置。 编码方法包括:生成用于输入7位数据并输出预定8位码字的速率-7 / 8MTR码; 通过连接8位码字和随后的8位码字来检查码字是否满足预定约束条件; 并且如果码字不违反约束条件,则不转换码字。 解码方法包括:通过连接当前的8位码字c(k)和随后的8位码字c(k + 1)来检查码字是否满足预定的MTR约束条件; 如果码字违反约束条件,转换码字,并且如果码字不违反约束条件,则不转换码字; 以及使用预定的MTR码将每个转换的8位码字解码为7位数据。 数据以高写入密度被可靠地再现,并且大量数据被存储在磁记录信息存储介质中并从磁记录信息存储介质再现。

    Method of manufacturing nanoimprint stamp
    27.
    发明授权
    Method of manufacturing nanoimprint stamp 有权
    制造纳米压印印花的方法

    公开(公告)号:US08603349B2

    公开(公告)日:2013-12-10

    申请号:US13170766

    申请日:2011-06-28

    Abstract: Methods of manufacturing a nanoimprint stamp are provided. The method may include forming a pattern on a surface of a master substrate, depositing an etch barrier layer on a surface of a stamp substrate, coating a photoresist on one of the surfaces of the master substrate and the stamp substrate on which an etch barrier layer is formed, forming a photoresist pattern by pressing the master substrate against the stamp substrate, forming a hard mask by etching the etch barrier layer using the photoresist pattern, and etching the stamp substrate using the hard mask as an etch mask.

    Abstract translation: 提供制造纳米压印印模的方法。 该方法可以包括在母板的表面上形成图案,在印模基板的表面上沉积蚀刻阻挡层,在主基板和印模基板的一个表面上涂覆光致抗蚀剂,在其上具有蚀刻阻挡层 形成光刻胶图案,通过将母版基板压靠在印模基板上,通过使用光致抗蚀剂图案蚀刻蚀刻阻挡层形成硬掩模,并使用硬掩模作为蚀刻掩模蚀刻印模基板。

    Patterned medium and method of manufacturing the same
    29.
    发明授权
    Patterned medium and method of manufacturing the same 有权
    图案化介质及其制造方法

    公开(公告)号:US07754354B2

    公开(公告)日:2010-07-13

    申请号:US11652586

    申请日:2007-01-12

    CPC classification number: G11B5/855 Y10T428/24942

    Abstract: A patterned medium and a method of manufacturing the same are provided. The patterned medium includes a data region having a plurality of recording dots arrayed along a plurality of tracks; and a non-data region comprising a part of the patterned medium other than the data region, the non-data region having a plurality of pattern marks. The method includes depositing an aluminum layer on a base substrate; depositing a photo-resist on the aluminum layer; forming a pattern on the photo-resist using a lithography process; forming a fine pattern by forming a plurality of cavities on a portion of the aluminum layer which is exposed through the photo-resist; removing the photo-resist; forming a mold pattern; imprinting the mold pattern on a media substrate to form cavities on the media substrate; and filling the cavities with a recording material.

    Abstract translation: 提供了图案化介质及其制造方法。 图案化介质包括具有沿多个轨道排列的多个记录点的数据区域; 以及非数据区域,包括除了数据区域之外的图案化介质的一部分,非数据区域具有多个图案标记。 该方法包括在基底基底上沉积铝层; 在铝层上沉积光刻胶; 使用光刻工艺在光致抗蚀剂上形成图案; 通过在通过光致抗蚀剂曝光的铝层的一部分上形成多个空腔来形成精细图案; 去除光刻胶; 形成模具图案; 将模具图案压印在介质基板上以在介质基板上形成空腔; 并用记录材料填充空腔。

    Perpendicular magnetic recording media with laminated soft magnetic underlayer
    30.
    发明授权
    Perpendicular magnetic recording media with laminated soft magnetic underlayer 失效
    垂直磁记录介质,层叠软磁底层

    公开(公告)号:US07601443B2

    公开(公告)日:2009-10-13

    申请号:US11259085

    申请日:2005-10-27

    CPC classification number: G11B5/66 G11B5/653 G11B5/656 G11B5/667

    Abstract: A recording medium including a perpendicular magnetic recording layer and a laminated SUL formed on a substrate is provided. The SUL includes an antiferromagnetic layer interposed between laminated structures including a magnetic layer, a non-magnetic layer and a magnetic layer. The layers may each have a thickness of 20 nm or less and the layers below the antiferromagnetic layer may be thinner than the layers on the antiferromagnetic layer. The laminated structures formed on and below the antiferromagnetic layer have unidirectional magnetic anisotropies set in the opposite radial direction to each other by an exchange bias. As a result, media magnetic domain noise can be diminished.

    Abstract translation: 提供了包括在基板上形成的垂直磁记录层和层叠SUL的记录介质。 SUL包括介于包括磁性层,非磁性层和磁性层的层压结构之间的反铁磁性层。 这些层可以各自具有20nm或更小的厚度,并且反铁磁层下面​​的层可以比反铁磁性层上的层更薄。 形成在反铁磁性层上和下方的叠层结构具有通过交换偏压彼此相反的径向方向设置的单向磁各向异性。 结果,媒体磁畴噪声可以减弱。

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