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135 条记录 (耗时 0.027 秒)

    Track following servo actuator offset calibration for tape drive
    1.
    发明授权
    Track following servo actuator offset calibration for tape drive 失效
    跟踪磁带驱动器的跟随伺服执行器偏移校准

    公开(公告)号：US07280307B2

    公开(公告)日：2007-10-09

    申请号：US11351774

    申请日：2006-02-10

    申请人： Nhan Bui ,  Ernest Gale ,  Eiji Ogura ,  Kazuhiro Tsuruta

    发明人： Nhan Bui ,  Ernest Gale ,  Eiji Ogura ,  Kazuhiro Tsuruta

    IPC分类号： G11B21/02

    CPC分类号： G11B5/584

    摘要： A magnetic tape drive, having a compound servo actuator, reduces the possibility of overshoots of servo elements when a tape cartridge is loaded, thereby reducing servo failures. The coarse motor is activated, then deactivated when the servo elements locate a servo pattern on the tape. After initialization of a DAC offset in the servo controller to 0, the position of the fine actuator is read. The fine actuator is enabled, with a DAC input of 0 and, after a short wait, the position is again read. The new DAC offset equals the initial DAC offset plus the difference between the two positions. If the difference is less than a predetermined threshold, the servo controller may obtain a lock on the servo signals and commence tracking. If the difference is not less, the process is repeated, with the DAC offset being adjusted each time, until the difference is less than a predetermined threshold.

    摘要翻译： 具有复合伺服致动器的磁带驱动器减少了当装入带盒时伺服元件过冲的可能性，从而减少了伺服故障。 粗电机被激活，然后当伺服元件在磁带上定位伺服模式时，停用。 在伺服控制器中DAC偏移初始化为0后，读取精细执行器的位置。 精准执行器使能，DAC输入为0，在短暂等待之后，再次读取位置。 新的DAC偏移量等于初始DAC偏移加上两个位置之间的差值。 如果差小于预定阈值，则伺服控制器可获得对伺服信号的锁定并开始跟踪。 如果差值不小于该值，则每次调整DAC偏移量，直到该差值小于预定阈值为止。

    TRACK FOLLOWING SERVO ACTUATOR OFFSET CALIBRATION FOR TAPE DRIVE
    2.
    发明申请
    TRACK FOLLOWING SERVO ACTUATOR OFFSET CALIBRATION FOR TAPE DRIVE 失效
    跟踪驱动器的伺服驱动器偏移校准

    公开(公告)号：US20070188910A1

    公开(公告)日：2007-08-16

    申请号：US11351774

    申请日：2006-02-10

    申请人： Nhan Bui ,  Ernest Gale ,  Eiji Ogura ,  Kazuhiro Tsuruta

    发明人： Nhan Bui ,  Ernest Gale ,  Eiji Ogura ,  Kazuhiro Tsuruta

    IPC分类号： G11B5/584 ,  G11B5/55

    CPC分类号： G11B5/584

    摘要： A magnetic tape drive, having a compound servo actuator, reduces the possibility of overshoots of servo elements when a tape cartridge is loaded, thereby reducing servo failures. The coarse motor is activated, then deactivated when the servo elements locate a servo pattern on the tape. After initialization of a DAC offset in the servo controller to 0, the position of the fine actuator is read. The fine actuator is enabled, with a DAC input of 0 and, after a short wait, the position is again read. The new DAC offset equals the initial DAC offset plus the difference between the two positions. If the difference is less than a predetermined threshold, the servo controller may obtain a lock on the servo signals and commence tracking. If the difference is not less, the process is repeated, with the DAC offset being adjusted each time, until the difference is less than a predetermined threshold.

    摘要翻译： 具有复合伺服致动器的磁带驱动器减少了当装入带盒时伺服元件过冲的可能性，从而减少了伺服故障。 粗电机被激活，然后当伺服元件在磁带上定位伺服模式时，停用。 在伺服控制器中DAC偏移初始化为0后，读取精细执行器的位置。 精准执行器使能，DAC输入为0，在短暂等待之后，再次读取位置。 新的DAC偏移量等于初始DAC偏移加上两个位置之间的差值。 如果差小于预定阈值，则伺服控制器可获得对伺服信号的锁定并开始跟踪。 如果差值不小于该值，则每次调整DAC偏移量，直到该差值小于预定阈值为止。

    Method and System for Providing a Longitudinally Shifted Servo Pattern for Increased Sampling Rate
    4.
    发明申请
    Method and System for Providing a Longitudinally Shifted Servo Pattern for Increased Sampling Rate 失效
    提供纵向移位伺服模式以提高采样率的方法和系统

    公开(公告)号：US20080117542A1

    公开(公告)日：2008-05-22

    申请号：US12024125

    申请日：2008-02-01

    申请人： Nhan Bui ,  Reed Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

    发明人： Nhan Bui ,  Reed Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

    IPC分类号： G11B5/584 ,  G11B5/09

    CPC分类号： G11B5/584

    摘要： A method and a system are provided for writing a plurality of servo bands on magnetic tape. The magnetic tape is moved longitudinally relative to at least one servo write head. The servo write head is positioned to write a plurality of parallel longitudinal servo bands. The plurality of servo bands comprise odd servo bands and even servo bands, and each of the odd servo bands lie between the each of the even servo bands. The at least one servo write head is operated to write the plurality of parallel longitudinal servo bands on the magnetic tape such that each of the plurality of servo bands comprise a plurality of frames, wherein each frame comprises a plurality of bursts of transition stripes, and each burst has a first transition stripe. The first transition stripe of each burst of each the odd servo band is longitudinally shifted from the first transition stripe of each burst of each even servo band by a substantially equal distance, D, such that servo information of the odd servo bands is interleaved with the servo information from the even servo bands.

    摘要翻译： 提供了一种在磁带上写入多个伺服带的方法和系统。 磁带相对于至少一个伺服写头纵向移动。 伺服写入头被定位成写入多个平行的纵向伺服带。 多个伺服频带包括奇数伺服频带和偶数伺服频带，并且每个奇数伺服频带位于每个偶数伺服频带之间。 操作至少一个伺服写入头以将多个平行纵向伺服频带写入磁带上，使得多个伺服频带中的每一个包括多个帧，其中每个帧包括多个过渡条纹脉冲串，以及 每个突发都有一个第一个过渡条纹。 每个奇数伺服频带的每个脉冲串的第一个转移条纹从每个偶数伺服频带的每个脉冲串的第一转移条带纵向偏移大致相等的距离D，使得奇数伺服带的伺服信息与 来自偶数伺服带的伺服信息。

    Data read transducers for determining lateral position of a tape head with respect to longitudinal servo bands of magnetic tape
    8.
    发明申请
    Data read transducers for determining lateral position of a tape head with respect to longitudinal servo bands of magnetic tape 失效
    用于确定磁带头相对于磁带的纵向伺服带的横向位置的数据读取换能器

    公开(公告)号：US20050052778A1

    公开(公告)日：2005-03-10

    申请号：US10660436

    申请日：2003-09-10

    申请人： Nhan Bui ,  Robert Hutchins ,  Glen Jaquette ,  Larry Tretter ,  Eiji Ogura ,  Kazuhiro Tsuruta

    发明人： Nhan Bui ,  Robert Hutchins ,  Glen Jaquette ,  Larry Tretter ,  Eiji Ogura ,  Kazuhiro Tsuruta

    IPC分类号： G11B5/584

    CPC分类号： G11B5/584

    摘要： In a magnetic tape system, during lateral repositioning of a tape head between servo bands, the servo head is not on a servo band and is unable to provide servo position information. Hence, information about the lateral position may be lost. A control system selectively senses data read transducers of the tape head; and, upon detecting a servo signal of a servo band from a sensed data read transducer, determines the lateral position of the tape head with respect to the detected servo band based upon the position of the data read transducer that sensed the detected servo signal.

    摘要翻译： 在磁带系统中，在磁头在伺服带之间的侧向重新定位期间，伺服磁头不在伺服带上，并且不能提供伺服位置信息。 因此，有关横向位置的信息可能会丢失。 控制系统选择性地感测磁带头的数据读取换能器; 并且在检测到来自感测数据读取换能器的伺服频带的伺服信号时，基于感测检测到的伺服信号的数据读取换能器的位置，确定磁带头相对于检测到的伺服频带的横向位置。

    Tape Cartridge Having Tape Media With Longitudinally Shifted Servo Pattern for Increased Sampling Rate
    9.
    发明申请
    Tape Cartridge Having Tape Media With Longitudinally Shifted Servo Pattern for Increased Sampling Rate 有权
    磁带盒具有带有纵向移位伺服模式的磁带介质，用于提高采样率

    公开(公告)号：US20080117539A1

    公开(公告)日：2008-05-22

    申请号：US12024127

    申请日：2008-02-01

    申请人： Nhan Bui ,  Reed Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

    发明人： Nhan Bui ,  Reed Hancock ,  Eiji Ogura ,  Kazuhiro Tsuruta

    IPC分类号： G11B5/09 ,  G11B5/584

    CPC分类号： G11B5/584

    摘要： A magnetic tape cartridge including magnetic tape with servo information is provided. The servo information comprises a plurality of parallel longitudinal servo bands that lie between a plurality of longitudinal data bands. The plurality of servo bands include odd servo bands and even servo bands, wherein each of the odd servo bands lie between each of the even servo bands. Each of the plurality servo bands include a plurality of frames, wherein each frame includes a plurality of bursts of transition stripes, and each burst having a first transition stripe. The first transition stripe of each burst of each the odd servo band is longitudinally shifted from the first transition stripe of each burst of each even servo band by a substantially equal distance, D, such that servo information of the odd servo bands is interleaved with the servo information from the even servo bands.

    摘要翻译： 提供一种包括具有伺服信息的磁带的磁带盒。 伺服信息包括位于多个纵向数据带之间的多个并行纵向伺服带。 多个伺服频带包括奇数伺服频带和偶数伺服频带，其中奇数伺服频带中的每一个位于每个偶数伺服频带之间。 多个伺服频带中的每一个包括多个帧，其中每个帧包括多个过渡条纹脉冲串，并且每个脉冲串具有第一过渡条带。 每个奇数伺服频带的每个脉冲串的第一个转移条纹从每个偶数伺服频带的每个脉冲串的第一转移条带纵向偏移大致相等的距离D，使得奇数伺服带的伺服信息与 来自偶数伺服带的伺服信息。

    COMPENSATION FOR TAPE BREAKAGE IN A TAPE DRIVE
    10.
    发明申请
    COMPENSATION FOR TAPE BREAKAGE IN A TAPE DRIVE 失效
    磁带驱动器中的胶带断裂补偿

    公开(公告)号：US20070187540A1

    公开(公告)日：2007-08-16

    申请号：US11674615

    申请日：2007-02-13

    申请人： Nhan Bui ,  Junichi Fukuda ,  Randy Inch ,  Eiji Ogura ,  Kazuhiro Tsuruta

    发明人： Nhan Bui ,  Junichi Fukuda ,  Randy Inch ,  Eiji Ogura ,  Kazuhiro Tsuruta

    IPC分类号： G11B15/32

    CPC分类号： G11B15/093

    摘要： Disclosed are a system, a method, and an article of manufacture to provide for the detection and compensation of tape breakage in a tape drive. The invention operates by simultaneously monitoring the tape reel rotation direction and the ratio of rotation between the tape reels. If the rotation direction is not the same for both reels, then tape breakage is indicated and reel rotation ceases. Tape breakage is also detected if the tape reel angular rotation ratio between the supply and take up reels is not within a specified tape reel ratio range. The tape reel angular rotation ratio is detected by simultaneously measuring the angular rotation of each tape reel in a specified time period and then calculating the ratio. The present invention detects the tape reel angular rotation ratio and if tape reel angular rotation ratio is outside of the specified tape reel ratio range, tape breakage is indicated and reel rotation ceases.

    摘要翻译： 公开了一种用于提供磁带驱动器中的磁带破损的检测和补偿的系统，方法和制品。 本发明通过同时监测磁带卷轴的旋转方向和磁带盘之间的旋转比来操作。 如果两个卷轴的旋转方向不一致，则表示带子断裂，并且卷轴旋转停止。 如果供纸卷取卷轴之间的磁带卷轴角度旋转比不在指定的磁带卷盘比范围内，则也会检测到磁带断线。 通过在规定的时间段内同时测量每个磁带卷轴的角度旋转，然后计算该比率来检测磁带卷轴角度旋转比。 本发明检测磁带卷轴的角度旋转比，如果磁带卷轴角度旋转比在指定的磁带卷盘比例范围之外，则表示磁带破损并且卷轴旋转停止。