Magnetic write head employing multiple magnetomotive force (MMF) sources
    1.
    发明申请
    Magnetic write head employing multiple magnetomotive force (MMF) sources 审中-公开
    使用多个磁动势(MMF)源的磁写头

    公开(公告)号:US20080112080A1

    公开(公告)日:2008-05-15

    申请号:US11598419

    申请日:2006-11-13

    IPC分类号: G11B5/127

    摘要: A write head for perpendicular magnetic recording having a write pole and first and second return poles. The write head can include a first magnetomotive force source for delivering a magnetomotive force to the first return pole and the write pole and a second magnetomotive force source for delivering magnetomotive force to the second return pole and the write pole. The first and second magnetomotive force sources can be operated independently of one another so that different relative amounts of magnetomotive force can be applied to the first and second return poles. A trailing magnetic shield can be connected with one of the return poles, such as the second return poles, and the variation in magnetomotive force can be used to increase the amount of flux flowing through the trailing shield when increased field gradient is desired (such as when writing a transition), and to decrease the amount of flux through the trailing shield when decreased field gradient and increased write field are desired (such as when writing a long magnetic section on a magnetic medium).

    摘要翻译: 用于垂直磁记录的写头,具有写极和第一和第二返回极。 写头可以包括用于将磁动势传递到第一返回极和写极的第一磁动势源和用于将磁动势传递到第二返回极和写极的第二磁动势力源。 第一和第二磁动势源可以彼此独立地操作,使得可以将不同的相对量的磁动势施加到第一和第二返回极。 拖尾磁屏蔽可以与诸如第二返回极中的一个返回极连接,并且当需要增加磁场梯度时,可以使用磁动势的变化来增加流过后屏蔽的磁通量(例如 当写入转换时),并且当需要减小的场梯度和增加的写入场(例如当在磁介质上写入长磁场时)时,减小通过后屏蔽的通量的量。

    Multi-Tier Data Processing
    4.
    发明申请
    Multi-Tier Data Processing 审中-公开
    多层数据处理

    公开(公告)号:US20130275717A1

    公开(公告)日:2013-10-17

    申请号:US13445848

    申请日:2012-04-12

    IPC分类号: G06F15/76 G06F9/02

    CPC分类号: G06F9/5044

    摘要: Various embodiments of the present invention provide systems and methods for a multi-tier data processing system. For example, a data processing system is disclosed that includes an input operable to receive data to be processed, a first data processor operable to process at least some of the data, a second data processor operable to process a portion of the data not processed by the first data processor, wherein the first data processor has a higher throughput than the second data processor, and an output operable to yield processed data from the first data processor and the second data processor.

    摘要翻译: 本发明的各种实施例提供了用于多层数据处理系统的系统和方法。 例如,公开了一种数据处理系统,其包括可操作以接收要处理的数据的输入,可操作以处理至少一些数据的第一数据处理器,可操作以处理未被 所述第一数据处理器,其中所述第一数据处理器具有比所述第二数据处理器更高的吞吐量,以及可操作以从所述第一数据处理器和所述第二数据处理器产生处理的数据的输出。

    Techniques for identifying servo sectors in storage devices
    6.
    发明授权
    Techniques for identifying servo sectors in storage devices 有权
    用于识别存储设备中的伺服扇区的技术

    公开(公告)号:US07869152B2

    公开(公告)日:2011-01-11

    申请号:US11677854

    申请日:2007-02-22

    IPC分类号: G11B5/09

    摘要: Techniques are provided for identifying the servo sectors in a track on a data storage device. A data storage device identifies the servo sectors in a track by reading distributed index bits from multiple servo sectors in a track. The data storage device analyzes only one index bit from each servo sector to identify the index of a track. In some embodiments, the index of a track can be identified after examining the index bits stored in a particular number of consecutive servo sectors, even in the presence of errors. The index bits in each track can have an error tolerance with a minimum Hamming distance greater than one. In other embodiments, a data storage device compares a sliding window of the index bits read from the servo sectors to all possible N-bit vectors that exist within a pattern of the index bits stored on a track.

    摘要翻译: 提供了用于识别数据存储设备上的轨道中的伺服扇区的技术。 数据存储装置通过从轨道中的多个伺服扇区读取分布式索引位来识别轨道中的伺服扇区。 数据存储设备仅分析来自每个伺服扇区的一个索引位以识别轨道的索引。 在一些实施例中,即使存在错误,也可以在检查存储在特定数量的连续伺服扇区中的索引位之后识别轨道的索引。 每个轨道中的索引位可以具有大于1的最小汉明距离的误差容差。 在其他实施例中,数据存储装置将从伺服扇区读取的索引位的滑动窗口与存储在轨道上的索引位的模式中存在的所有可能的N位向量进行比较。

    Apparatus for guide catheter positioning
    7.
    发明授权
    Apparatus for guide catheter positioning 失效
    引导导管定位装置

    公开(公告)号:US07267663B2

    公开(公告)日:2007-09-11

    申请号:US10774051

    申请日:2004-02-06

    申请人: Bruce Wilson

    发明人: Bruce Wilson

    IPC分类号: A61M31/00 A61M37/00 A61M25/00

    摘要: The present disclosure describes a method and apparatus for guide catheterization. In one embodiment, a guiding catheter system includes a flexible shaft having a distal end shaped for accessing a target vessel. A handle assembly is movably coupled to the flexible shaft. The flexible shaft is selectably movable between a plurality of discrete positions of a first degree-of-freedom defined relative to the flexible shaft. The flexible shaft restrained in the first degree-of-freedom at each position of the plurality of discrete positions. The flexible shaft movable through a predetermined displacement of a second degree-of-freedom defined relative to the flexible shaft at each position of the plurality of discrete positions. Motion of the flexible shaft relative to the handle assembly results in a controllable sweeping motion at the distal end of the flexible shaft.

    摘要翻译: 本公开描述了用于引导导管插入术的方法和装置。 在一个实施例中,引导导管系统包括具有成形为用于接近目标血管的远端的柔性轴。 手柄组件可移动地联接到柔性轴。 柔性轴可选择地在相对于柔性轴限定的第一自由度的多个离散位置之间移动。 柔性轴在多个离散位置的每个位置处以第一自由度限制。 柔性轴可在多个离散位置的每个位置处移动通过相对于柔性轴限定的第二自由度的预定位移。 柔性轴相对于手柄组件的运动导致在柔性轴的远端处的可控的扫掠运动。

    System and method for WORM magnetic recording
    8.
    发明申请
    System and method for WORM magnetic recording 失效
    WORM磁记录系统和方法

    公开(公告)号:US20070153411A1

    公开(公告)日:2007-07-05

    申请号:US11324575

    申请日:2006-01-03

    IPC分类号: G11B5/02 G11B15/04

    摘要: WORM safeguards are provided in a magnetic disk drive in which the disks are pre-magnetized or pre-recorded such that all magnetic domains on each recording surface are completely aligned pointing in the same direction. A special write head which can magnetically write only in the direction opposite to the pre-magnetization orientation is also provided.

    摘要翻译: 在磁盘驱动器中提供WORM保护,其中磁盘被预磁化或预先记录,使得每个记录表面上的所有磁畴完全对齐指向相同的方向。 还提供了可以仅在与预磁化取向相反的方向磁性写入的特殊写头。