公开(公告)号：US08296930B2

公开(公告)日：2012-10-30

申请号：US12645323

申请日：2009-12-22

Applicant: Shin Funada ,  Quang Le ,  Thomas L. Leong ,  Jui-Lung Li ,  Chang-Man Park ,  Ning Shi ,  Hicham M. Sougrati

Inventor： Shin Funada ,  Quang Le ,  Thomas L. Leong ,  Jui-Lung Li ,  Chang-Man Park ,  Ning Shi ,  Hicham M. Sougrati

IPC: G11B5/127 ,  H04R31/00

CPC classification number: G11B5/3163 ,  G11B5/112 ,  G11B5/3912 ,  G11B5/398 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052 ,  Y10T29/49067

Abstract: A method for manufacturing a magnetoresistive sensor that results in the sensor having a very flat top magnetic shield. The process involves depositing a plurality of sensor layers and then depositing a thin high density carbon CMP stop layer over the sensor layers and forming a mask over the CMP stop layer. An ion milling is performed to define the sensor. Then a thin insulating layer and magnetic hard bias layer are deposited. A chemical mechanical polishing is performed to remove the mask and a reactive ion etching is performed to remove the remaining carbon CMP stop layer. Because the CMP stop layer is very dense and hard, it can be made very thin. This means that when it is removed by reactive ion etching, there is very little notching over the sensor, thereby allowing the upper shield to be very thin.

Abstract translation: 一种用于制造磁阻传感器的方法，其导致传感器具有非常平坦的顶部磁屏蔽。 该过程包括沉积多个传感器层，然后在传感器层上沉积薄的高密度碳CMP停止层，并在CMP停止层上形成掩模。 执行离子铣削来定义传感器。 然后沉积薄的绝缘层和磁性硬偏置层。 进行化学机械抛光以除去掩模，并执行反应离子蚀刻以除去剩余的碳CMP停止层。 因为CMP停止层非常致密且硬，所以可以使其非常薄。 这意味着当通过反应离子蚀刻去除时，在传感器上几乎没有凹口，从而允许上部屏蔽（沉积在其上）非常薄。

公开(公告)号：US08291190B2

公开(公告)日：2012-10-16

申请号：US12545788

申请日：2009-08-21

Applicant: Yoshiju Watanabe ,  Toshio Kakihara ,  Koichi Arai ,  Terumi Takashi ,  Yuzo Nakagawa

Inventor： Yoshiju Watanabe ,  Toshio Kakihara ,  Koichi Arai ,  Terumi Takashi ,  Yuzo Nakagawa

IPC: G06F13/00 ,  G06F13/28

CPC classification number: G11B5/012 ,  G11B5/09 ,  G11B27/11 ,  G11B27/36 ,  G11B2220/2516

Abstract: A method for writing data to a disk drive. The method includes: receiving a write command; and, determining whether a beginning and an end of a rewrite area specified by the write command agree with boundaries of large-sized data sectors on a disk. The method also includes: reading head and tail data sectors and making a backup of the head and tail data sectors in first and second non-volatile memory areas, respectively, if the beginning of the rewrite area does not agree with the boundaries. The method includes starting a rewrite of the rewrite area after completing backups into first and second non-volatile memory areas. Moreover, the method includes: determining a state stage by using data in first, second, third and fourth non-volatile memory areas if a power shut-down occurs during execution of the write command; and, executing a recovery process in accordance with the determined state stage.

Abstract translation: 一种将数据写入磁盘驱动器的方法。 该方法包括：接收写命令; 并且确定由写入命令指定的重写区域的开始和结束是否与盘上的大尺寸数据扇区的边界一致。 该方法还包括：如果重写区域的开始与边界不一致，则分别读取头部和尾部数据扇区并分别在第一和第二非易失性存储区域中备份头尾数据扇区。 该方法包括在完成对第一和第二非易失性存储器区域的备份之后重新开始重写区域的重写。 此外，该方法包括：如果在写入命令的执行期间发生电源关闭，则通过使用第一，第二，第三和第四非易失性存储器区域中的数据来确定状态级; 以及根据所确定的状态阶段执行恢复处理。

公开(公告)号：US08284521B2

公开(公告)日：2012-10-09

申请号：US11998727

申请日：2007-11-30

Applicant: Takayoshi Ohtsu

Inventor： Takayoshi Ohtsu

IPC: G11B5/60 ,  G11B5/127

CPC classification number: G11B5/3133 ,  G11B5/3967 ,  G11B5/6064 ,  G11B5/607

Abstract: Embodiments of the present invention help to provide a flying height adjusting type magnetic head slider with reduced influence of a heater coil induction field. According to one embodiment, a magnetic head slider comprises a heater, a read element, and a write element, which are formed on a substrate. The heater is formed between a lower magnetic shield of the read element and the substrate by meandering a heater coil in direction Y going away from ABS. Magnetic fields by generated in direction Y orthogonal to a track width direction X of the lower magnetic field upon energization of the heater coil are offset each other, exerting no influence on the magnetized state in the track width direction X of the lower magnetic shield. A magnetic field hx induced in the track width direction X of the lower magnetic shield is coincident with the magnetizing direction of the lower magnetic shield, acting to maintain the magnetized state of the lower magnetic shield.

Abstract translation: 本发明的实施例有助于提供一种减小加热器线圈感应场的影响的飞行高度调节型磁头滑块。 根据一个实施例，磁头滑块包括形成在基板上的加热器，读取元件和写入元件。 加热器通过在远离ABS的方向Y上蜿蜒加热线圈而形成在读取元件的下部磁屏蔽和基板之间。 在加热线圈通电时与下磁场的磁道宽度方向X正交的方向Y上产生的磁场相互抵消，对下磁屏蔽的磁道宽度方向X上的磁化状态没有影响。 在下磁屏蔽的磁道宽度方向X上感应的磁场hx与下磁屏蔽的磁化方向一致，用于保持下磁屏蔽的磁化状态。

公开(公告)号：US08279556B2

公开(公告)日：2012-10-02

申请号：US12477755

申请日：2009-06-03

Applicant: Oscar Ruiz

Inventor： Oscar Ruiz

IPC: G11B5/60

CPC classification number: G11B5/6005

Abstract: A slider designed to reduce fly height sigma in a plurality of fly media is provided. The slider includes an air bearing surface, a front shallow step pad and a rear shallow step pad that are at a first level deeper than the air bearing surface. The slider further includes a first rear side pocket that is at a second level deeper than the air bearing surface, the first side pocket substantially polygon shaped and a second rear non-symmetrical side pocket non-symmetrical with the first rear side pocket that is at the second level deeper than the air bearing surface, the second side pockets substantially polygon shaped wherein the second rear non-symmetrical side pocket comprises a larger volume than the first rear side pocket.

Abstract translation: 提供了设计用于减少多个飞行介质中的飞行高度sigma的滑块。 滑块包括位于比空气轴承表面更深的第一水平处的空气轴承表面，前浅阶梯垫和后浅台阶垫。 所述滑块还包括第一后​​侧袋，所述第一后侧袋位于比所述空气支承表面更深的第二水平处，所述第一侧袋基本上为多边形形状，以及第二后侧非对称侧袋与所述第一后侧袋不对称 所述第二水平面比所述空气轴承表面更深，所述第二侧袋基本上是多边形的，其中所述第二后部非对称侧袋包括比所述第一后侧袋更大的体积。

公开(公告)号：US08271801B2

公开(公告)日：2012-09-18

申请号：US12622400

申请日：2009-11-19

Applicant: Cyril Guyot

Inventor： Cyril Guyot

IPC: G06F11/30 ,  G06F12/14

CPC classification number: G06F12/0866 ,  G11B5/09

Abstract: A method, apparatus and a data storage device are provided for implementing data confidentiality and integrity of data stored in overlapping, shingled data tracks on a recordable surface of a storage device. A unique write counter is stored for each zone written to the recordable surface of the storage device. An encryption key is used together with the write counter information and a logical block address to encrypt each sector being written, and to decrypt all sectors being read. An individual sector is decrypted, obtaining the write counter information and reading the data sector. A message authentication code is stored for each zone. All sectors of the zone are read to perform integrity check on a sector.

Abstract translation: 提供了一种方法，装置和数据存储装置，用于实现存储在存储装置的可记录表面上的重叠的带状数据轨道中的数据的数据机密性和完整性。 为写入存储设备的可记录表面的每个区域存储唯一的写入计数器。 加密密钥与写计数器信息和逻辑块地址一起使用以加密正在写入的每个扇区，并且解密所读取的所有扇区。 解密单个扇区，获得写入计数器信息并读取数据扇区。 为每个区域存储消息认证码。 读取该区域的所有扇区以对扇区执行完整性检查。

公开(公告)号：US08270116B2

公开(公告)日：2012-09-18

申请号：US11522117

申请日：2006-09-14

Applicant: Yuki Shimizu ,  Junguo Xu ,  Jianhua Li ,  Takanori Yamazaki

Inventor： Yuki Shimizu ,  Junguo Xu ,  Jianhua Li ,  Takanori Yamazaki

IPC: G11B5/60

CPC classification number: G11B5/6005

Abstract: A magnetic disk drive includes a magnetic recording medium and a magnetic head slider adapted to fly over a surface of a magnetic recording medium and read or write information. The magnetic head slider includes a slider air bearing surface and a magnetic transducer. The slider air bearing surface includes a front pad having front rail surfaces and front step bearing surfaces, a rear pad having a rear rail surface and a rear step bearing surface, and a negative-pressure groove interposed between the front pad and the rear pad. A vibration suppressing groove is formed in the rear rail surface so as to be deeper than the rear rail surface and to be closed at its periphery. The vibration suppressing groove quickly damps out translational and pitching vibrations in the flying height direction of the magnetic head slider while stabilizing its flying.

Abstract translation: 磁盘驱动器包括磁记录介质和适于在磁记录介质的表面上飞越并读取或写入信息的磁头滑块。 磁头滑块包括滑块空气支承表面和磁换能器。 滑块空气轴承表面包括具有前导轨表面和前阶梯支承表面的前垫，具有后轨表面和后台阶支承表面的后垫，以及插入在前垫和后垫之间的负压槽。 在后轨面上形成振动抑制槽，使其比后轨面更深，并在其周边封闭。 振动抑制槽在稳定其飞行的同时快速地减小磁头滑块的飞行高度方向上的平移和俯仰振动。

公开(公告)号：US08268517B2

公开(公告)日：2012-09-18

申请号：US13038313

申请日：2011-03-01

Applicant: Mary Kathryn Gutberlet ,  Rambod Nader ,  Michael Andrew Parker ,  Douglas Johnson Werner

Inventor： Mary Kathryn Gutberlet ,  Rambod Nader ,  Michael Andrew Parker ,  Douglas Johnson Werner

IPC: G03F1/00 ,  G03F1/32

CPC classification number: G03F1/38 ,  G03F1/00 ,  G03F1/50

Abstract: A photolithographic mask set for creating a plurality of characters on a device includes a plurality of photolithographic masks, wherein each mask includes at least one mask character area and at least one mask character field area that surrounds said mask character area; wherein each said mask character field area has a radiation energy density transmission factor Tf that is greater than zero, and wherein each mask character area has a radiation energy density transmission factor Tc that is greater than zero, such that each mask character field area and each mask character area of each mask is not opaque.

Abstract translation: 一种用于在设备上创建多个字符的光刻掩模组包括多个光刻掩模，其中每个掩模包括至少一个掩模字符区域和围绕所述掩模字符区域的至少一个掩码字符区域; 其中每个所述掩模字符区域具有大于零的辐射能量密度透射因子Tf，并且其中每个掩模字符区域具有大于零的辐射能量密度透射因子Tc，使得每个掩模字符区域和每个掩模字符区域 每个掩码的掩码字符区域不是不透明的。

公开(公告)号：US08257845B2

公开(公告)日：2012-09-04

申请号：US12378120

申请日：2009-02-10

Applicant: Tatsuya Hinoue ,  Hiroshi Kanai ,  Toshinori Ono ,  Hiroyuki Suzuki ,  Hiroshi Inaba

Inventor： Tatsuya Hinoue ,  Hiroshi Kanai ,  Toshinori Ono ,  Hiroyuki Suzuki ,  Hiroshi Inaba

IPC: G11B5/66

CPC classification number: G11B5/66 ,  G11B5/855

Abstract: Embodiments of the present invention help to produce discrete track media and bit patterned media having both excellent recording and reproducing performance and reliability. According to one embodiment, a manufacturing method forms a nonmagnetic layer mainly composed of the same element as a nonmagnetic element contained in magnetic recording layers and on the magnetic recording layers and a mask layer having apertures for forming more concentrated parts of the nonmagnetic element in the magnetic recording layers on the nonmagnetic layer. The method implants ions of the nonmagnetic element through the nonmagnetic layer masked by the mask layer to form the more concentrated parts of the nonmagnetic element in the magnetic recording layer.

Abstract translation: 本发明的实施例有助于产生具有优异的记录和再现性能和可靠性的离散轨道介质和位图案化介质。 根据一个实施例，制造方法形成主要由与磁记录层中包含的非磁性元件相同的元件和磁记录层的非磁性层和具有用于形成非磁性元件的更集中部分的孔的掩模层 非磁性层上的磁记录层。 该方法通过由掩模层掩蔽的非磁性层注入非磁性元件的离子，以形成磁记录层中的非磁性元件的更集中的部分。

公开(公告)号：US08254056B2

公开(公告)日：2012-08-28

申请号：US11724823

申请日：2007-03-16

Applicant: Katsuji Ichikawa ,  Mitsuhiko Oguchi

Inventor： Katsuji Ichikawa ,  Mitsuhiko Oguchi

IPC: G11B33/08 ,  G11B33/14 ,  H05K7/20

CPC classification number: G11B25/043 ,  G11B33/146 ,  G11B33/1486

Abstract: Embodiments in accordance with the present invention provide a magnetic disk drive that reliably prevents entry of water or other form of liquid through a breathing hole for the enhanced performance, reliability, and the like. In one embodiment, a box body forming part of a hard disk drive (HDD) has a top cover. The top cover includes a breathing hole drilled therein. The breathing hole serves to eliminate any pressure difference between an inside and an outside of the HDD. A fiber waterproof body, which includes a waterproof fiber material or the like, is fitted in a large-diameter hole of the breathing hole. A pore waterproof body, formed by bundling up a large number of slender pores, is mounted in a small-diameter hole of the breathing hole.

Abstract translation: 根据本发明的实施例提供了一种磁盘驱动器，其可靠地防止水或其它形式的液体通过呼吸孔进入以提高性能，可靠性等。 在一个实施例中，形成硬盘驱动器（HDD）的一部分的盒体具有顶盖。 顶盖包括在其中钻孔的呼吸孔。 呼吸孔用于消除HDD内部和外部之间的任何压力差。 包括防水纤维材料等的纤维防水体装配在呼吸孔的大直径孔中。 通过捆扎大量细长孔形成的孔防水体安装在呼吸孔的小直径孔中。

公开(公告)号：US08250380B2

公开(公告)日：2012-08-21

申请号：US12640730

申请日：2009-12-17

Applicant: Cyril Guyot ,  Zvonimir Z. Bandic ,  Yuval Cassuto ,  Adam Michael Espeseth ,  Marco Sanvido

Inventor： Cyril Guyot ,  Zvonimir Z. Bandic ,  Yuval Cassuto ,  Adam Michael Espeseth ,  Marco Sanvido

IPC: H04L9/14 ,  G06F12/14 ,  G06F12/02

CPC classification number: G06F12/1425 ,  G06F12/0246 ,  G06F21/79 ,  G06F2221/2131 ,  G06F2221/2143 ,  G11C16/16 ,  G11C16/22 ,  H04L9/0894

Abstract: A method and apparatus are provided for implementing secure erase for solid state drives (SSDs). An encryption key is used to encrypt data being written to SSD. A controller identifies a key storage option, and responsive to the identified key storage option, stores a key for data encryption and decryption. The controller deletes the key within the SSD responsive to the identified key storage option, ensuring that once the key is deleted, the key is not recoverable and data is effectively erased.

Abstract translation: 提供了一种用于实现固态驱动器（SSD）的安全擦除的方法和装置。 加密密钥用于加密写入SSD的数据。 控制器识别密钥存储选项，并且响应于所识别的密钥存储选项，存储用于数据加密和解密的密钥。 控制器响应于识别的密钥存储选项删除SSD内的密钥，确保一旦密钥被删除，密钥不可恢复，并且数据被有效地擦除。