DATA RECORDING SYSTEM WITH SERVO PATTERN HAVING PSEUDO-RANDOM BINARY SEQUENCES
    2.
    发明申请
    DATA RECORDING SYSTEM WITH SERVO PATTERN HAVING PSEUDO-RANDOM BINARY SEQUENCES 失效
    具有PSEUDO随机二进制序列的服务器模式的数据记录系统

    公开(公告)号:US20050254160A1

    公开(公告)日:2005-11-17

    申请号:US10845814

    申请日:2004-05-13

    摘要: A data recording system, such as a magnetic recording hard disk drive, has a recording medium in which the data tracks have pseudo-random binary sequences for the servo information used to control the position of the recording head. A first pseudo-random binary sequence (PRBS) and a second PRBS identical to the first PRBS but shifted by a portion of the period of the first PRBS are located between the track boundaries in alternating tracks in a first region of the servo pattern and between the track centers in alternating tracks in a second region spaced along the track from said first region. A servo decoder has two correlators, one for each PRBS. Each correlator outputs a dipulse when its PRBS repeats. The difference in amplitude of the dipulses represents the head position signal. The dipulses also control the amplifier for the signal read back by the head and the timing of the track identification (TID) detector.

    摘要翻译: 诸如磁记录硬盘驱动器的数据记录系统具有其中数据轨道具有用于控制记录头的位置的伺服信息的伪随机二进制序列的记录介质。 第一伪随机二进制序列(PRBS)和与第一PRBS相同但被第一PRBS的周期的一部分移位的第二PRBS位于伺服模式的第一区域中的交替轨道中的轨道边界之间,并且位于 所述轨道在与所述第一区域沿所述轨道间隔开的第二区域中的交替轨道中心。 伺服解码器具有两个相关器,每个PRBS一个。 当PRBS重复时,每个相关器输出dipulse。 二次脉冲的幅度差表示磁头位置信号。 该信号还可控制放大器的头部读取信号和磁道识别(TID)检测器的定时。

    DATA RECORDING MEDIUM WITH SERVO PATTERN HAVING PSEUDO-RANDOM BINARY SEQUENCES
    3.
    发明申请
    DATA RECORDING MEDIUM WITH SERVO PATTERN HAVING PSEUDO-RANDOM BINARY SEQUENCES 失效
    具有PSEUDO随机二进制序列的SERVO模式的数据记录介质

    公开(公告)号:US20050254156A1

    公开(公告)日:2005-11-17

    申请号:US10845813

    申请日:2004-05-13

    IPC分类号: G11B5/09 G11B5/596

    CPC分类号: G11B5/59688

    摘要: A data recording medium, such as a magnetic recording hard disk, has data tracks with pseudo-random binary sequences for the servo information used to control the position of the recording head in the disk drive. A first pseudo-random binary sequence (PRBS) and a second PRBS identical to the first PRBS but shifted by a portion of the period of the first PRBS are located between the track boundaries in alternating tracks in a first region of the servo pattern and between the track centers in alternating tracks in a second region spaced along the track from said first region. A servo decoder in the disk drive has two correlators, one for each PRBS. Each correlator outputs a dipulse when its PRBS repeats. The difference in amplitude of the dipulses represents the head position signal. The dipulses also control the amplifier for the signal read back by the head and the timing of the track identification (TID) detector.

    摘要翻译: 诸如磁记录硬盘的数据记录介质具有用于伺服信息的伪随机二进制序列的数据轨道,用于控制磁盘驱动器中的记录头的位置。 第一伪随机二进制序列(PRBS)和与第一PRBS相同但被第一PRBS的周期的一部分移位的第二PRBS位于伺服模式的第一区域中的交替轨道中的轨道边界之间,并且位于 所述轨道在与所述第一区域沿所述轨道间隔开的第二区域中的交替轨道中心。 磁盘驱动器中的伺服解码器具有两个相关器,每个PRBS一个。 当PRBS重复时,每个相关器输出dipulse。 二次脉冲的幅度差表示磁头位置信号。 该信号还可控制放大器的头部读取信号和磁道识别(TID)检测器的定时。

    Multi-Tier Data Processing
    6.
    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
    8.
    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
    9.
    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
    10.
    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。