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1. 发明申请

WO2011101197A1 SKEW ACTUATOR TO SERVO TRACK ZERO REFERENCE 审中-公开
标题翻译： SKEW执行器到伺服轨迹零参考
公开(公告)号：WO2011101197A1
公开(公告)日：2011-08-25
申请号：PCT/EP2011/050748
申请日：2011-01-20
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , HANCOCK, Reed, Alan , BUI, Nhan, Xuan , TSURUTA, Kazuhiro , JUDD, Kevin, Bruce , INCH, Randy, Clark
发明人： HANCOCK, Reed, Alan , BUI, Nhan, Xuan , TSURUTA, Kazuhiro , JUDD, Kevin, Bruce , INCH, Randy, Clark
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： A servo detection system for detecting servo tracks of a longitudinal tape (11). In a read/write head, two servo read heads (50, 51) are spaced laterally on a first head module (35), and a servo read head (52, 53) is on a second head module (36) spaced longitudinally from the first module (35). A method comprises initially sensing a tape servo track (110 - 114) with one servo read head of the first module (35) and the servo read head of the second module (36) to determine skew misalignment of the servo track. A zero reference value is stored representing the determined skew misalignment. The detection system switches from the one servo read head of each module, to the two servo read heads of the first module, and employs the stored value to position the read/write head in the zero skew position. The two servo read heads are then employed to read two servo tracks to identify the data band and to control skew.
摘要翻译：一种用于检测纵向带（11）的伺服轨迹的伺服检测系统。在读/写头中，两个伺服读头（50,51）在第一头模块（35）上横向隔开，并且伺服读头（52,53）位于第二头模块（36）上，第二头模块第一模块（35）。一种方法包括首先用第一模块（35）的一个伺服读取头和第二模块（36）的伺服读取头来感测磁带伺服磁道（110-114），以确定伺服磁道的偏斜不对准。存储表示所确定的倾斜未对准的零参考值。检测系统从每个模块的一个伺服读取头切换到第一个模块的两个伺服读取头，并使用存储的值将读/写头置于零倾斜位置。然后使用两个伺服读取头来读取两个伺服磁道以识别数据带并控制偏斜。

2. 发明申请

WO2012010498A1 TAPE DRIVE VELOCITY CONTROL 审中-公开
标题翻译：磁带驱动速度控制
公开(公告)号：WO2012010498A1
公开(公告)日：2012-01-26
申请号：PCT/EP2011/062087
申请日：2011-07-14
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , HANCOCK, Reed, Alan , INCH, Randy, Clark , BUI, Nhan, Xuan , TSURUTA, Kazuhiro , OGURA, Eiji , NADEHARA, Shuhei
发明人： HANCOCK, Reed, Alan , INCH, Randy, Clark , BUI, Nhan, Xuan , TSURUTA, Kazuhiro , OGURA, Eiji , NADEHARA, Shuhei
IPC分类号： G11B15/46 , G11B15/54
CPC分类号： G11B15/32 , G11B15/46 , G11B15/52
摘要： A method is disclosed for operating a magnetic tape drive. The tape drive includes a plurality of DC motors, each having a plurality of Hall sensors, and each under the control of a servo system which is configured to read location information from the magnetic tape. The servo system computes a primary tape velocity from location information, and senses a secondary and tertiary velocity signal and computes a tape velocity based on these. If the primary velocity location information is available this is used, if not then one of the secondary or tertiary velocity signals is used. The secondary velocity signal is employed when an absolute value of a term related to tape velocity is less than a predetermined value, and the tertiary velocity signal is used when it is greater than the predetermined value.
摘要翻译：公开了一种用于操作磁带驱动器的方法。磁带驱动器包括多个DC电动机，每个DC电动机具有多个霍尔传感器，并且各自在被配置为从磁带读取位置信息的伺服系统的控制下。伺服系统从位置信息计算主带速度，并感测二次和三次速度信号，并根据这些信号计算磁带速度。如果主速度位置信息可用，则使用该速度位置信息，如果不是则使用二次或三次速度信号中的一个。当与磁带速度相关的项的绝对值小于预定值时，采用二次速度信号，并且当三次速度信号大于预定值时使用。

3. 发明申请

WO2011067052A1 DETECTION AND ACQUISITION OF A SERVO PATTERN 审中-公开
标题翻译：伺服模式的检测和获取
公开(公告)号：WO2011067052A1
公开(公告)日：2011-06-09
申请号：PCT/EP2010/066570
申请日：2010-11-01
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , HANCOCK, Reed, Alan , BUI, Nhan, Xuan , TSURUTA, Kazuhiro , JUDD, Kevin, Bruce
发明人： HANCOCK, Reed, Alan , BUI, Nhan, Xuan , TSURUTA, Kazuhiro , JUDD, Kevin, Bruce
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： A method, a servo system and a tape drive are provided to acquire lock on a servo signal. The servo signals of at least one servo element are monitored to detect a valid servo signal. If a valid servo signal is not detected than the fine actuator is moved in a first direction until either a valid servo signal is detected or the fine actuator travel limit is reached. When a valid servo signal is detected, the fine actuator is set to a neutral position and the coarse actuator is moved in the first direction. When the fine actuator travel limit is reached the fine actuator is moved to the first position and the coarse actuator is moved in a second direction, opposite of the first direction.
摘要翻译：提供一种方法，伺服系统和磁带驱动器来获取对伺服信号的锁定。监视至少一个伺服元件的伺服信号以检测有效的伺服信号。如果没有检测到有效的伺服信号比精细致动器沿第一方向移动，直到检测到有效的伺服信号或达到精细执行器行程极限。当检测到有效的伺服信号时，精细致动器被设定为中立位置，粗略的致动器沿第一方向移动。当达到精细致动器行程极限时，精细致动器移动到第一位置，并且粗略致动器沿与第一方向相反的第二方向移动。

4. 发明申请

WO2009095353A1 TAPE DRIVE FOR MAINTAINING LATERAL POSITION UTILIZING LONGITUDINALLY SHIFTED SERVO PATTERN WITH INCREASED SAMPLING RATE 审中-公开
标题翻译：用于维持横向位置的带状驱动器，使用具有更高采样率的纵向转换服务器模式
公开(公告)号：WO2009095353A1
公开(公告)日：2009-08-06
申请号：PCT/EP2009/050764
申请日：2009-01-23
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , BUI, Nhan, Xuan , TSURUTA, Kazuhiro , HANCOCK, Reed, Alan , OGURA, Eiji
发明人： BUI, Nhan, Xuan , TSURUTA, Kazuhiro , HANCOCK, Reed, Alan , OGURA, Eiji
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： A tape drive and a method of using a tape drive is provided. The tape drive includes a head assembly including at least a first and a second servo read element configured to detect transition stripes of a servo pattern on tape media. The first servo read element is configured to detect at least two transition stripes of an even servo band on the tape media at a first time. The servo detection logic is configured to detect a timing of at least two transition stripes of the even servo band on the tape media. The servo controller is configured to position the head assembly laterally with respect to the tape media in response to the timing of the at least two transition stripes of the even servo band on the tape media. The second servo read element is configured to detect at least two transition stripes of an odd servo band on the tape media at a second time, wherein the second time is a time delay after the first time corresponding to a distance D. The servo detection logic is further configured to detect a timing of at least two transition stripes of the odd servo band on the tape media. The servo controller further is configured to position the head assembly laterally with re spect to the tape media in response to the timing of the at least two transition stripes of the odd servo band on the tape media.
摘要翻译：提供了磁带机和使用磁带机的方法。磁带驱动器包括头组件，其包括至少第一和第二伺服读取元件，第一和第二伺服读取元件被配置为检测磁带介质上的伺服图案的过渡条纹。第一伺服读取元件被配置为在第一时间检测磁带介质上的偶数伺服带的至少两个过渡条带。伺服检测逻辑被配置为检测磁带介质上的偶数伺服带的至少两个过渡条带的定时。伺服控制器被配置为响应于带介质上的偶数伺服带的至少两个过渡条的时序，相对于带介质横向地定位头部组件。第二伺服读取元件被配置为在第二时间检测磁带媒体上的奇数伺服频带的至少两个过渡条带，其中第二时间是对应于距离D的第一时间之后的时间延迟。伺服检测逻辑还被配置为检测磁带介质上的奇数伺服带的至少两个过渡条带的定时。伺服控制器还被配置为响应于磁带介质上的奇数伺服带的至少两个过渡条带的定时，将磁头组件横向定位到磁带介质上。

5. 发明申请

WO2011107358A1 METHOD USING ALTERNATIVE TIMING INTERVALS IN A SERVO BAND 审中-公开
标题翻译：在伺服带中使用替代时序间隔的方法
公开(公告)号：WO2011107358A1
公开(公告)日：2011-09-09
申请号：PCT/EP2011/052433
申请日：2011-02-18
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , HANCOCK, Reed, Alan , BUI, Nhan, Xuan , JELITTO, Jens , CHERUBINI, Giovanni , TSURUTA, Kazuhiro
发明人： HANCOCK, Reed, Alan , BUI, Nhan, Xuan , JELITTO, Jens , CHERUBINI, Giovanni , TSURUTA, Kazuhiro
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： An alternative time interval is taken of a timing based servo band to determine lateral position of a servo read head. The servo band is arranged in a sequence bursts with non- parallel servo stripes in sequentially adjacent sub-frames of a linear tape. The timing intervals comprise at least a first time interval (A) between a first pair of non-parallel servo stripes of a sub-frame; and an alternative time interval (C) between a pair of non-parallel servo stripes intermediate the first time intervals (A), the alternative interval servo stripes of sequentially adjacent sub-frames comprising a second servo stripe of the first pair, and a first servo stripe of a sequentially succeeding first pair. Position signals are ratios involving the first and second time intervals.
摘要翻译：采用基于定时的伺服频带的替代时间间隔来确定伺服读取头的横向位置。在线性带的顺序相邻的子帧中，伺服带以非平行的伺服条以序列突发排列。定时间隔包括子帧的第一对非平行伺服条带之间的至少第一时间间隔（A）; 以及在第一时间间隔（A）之间的一对非平行伺服条之间的替代时间间隔（C），包括第一对的第二伺服条的顺序相邻子帧的替代间隔伺服条，以及第一对顺序后续的第一对的伺服条纹。位置信号是涉及第一和第二时间间隔的比率。

6. 发明申请

WO2011054558A1 POSITIONING COARSE SERVO ACTUATOR OF TAPE SERVO SYSTEM TO ALLOW FINE SERVO ACTUATOR TO FOLLOW TAPE SHIFT EXCURSIONS 审中-公开
标题翻译：磁带伺服系统的定位伺服伺服驱动器允许精细伺服执行器去跟踪磁带移位传感器
公开(公告)号：WO2011054558A1
公开(公告)日：2011-05-12
申请号：PCT/EP2010/062750
申请日：2010-08-31
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , HANCOCK, Reed, Alan , BUI, Nhan, Xuan , PANTAZI, Angeliki , ARGUMENDO, Armando, Jesus , JUSTO, Roger, Javier
发明人： HANCOCK, Reed, Alan , BUI, Nhan, Xuan , PANTAZI, Angeliki , ARGUMENDO, Armando, Jesus , JUSTO, Roger, Javier
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： Methods, servo systems, and data storage drives follow the lateral shift excursions of longitudinal tape, for example, from flangeless tape guides. A servo sensor is configured to sense lateral position of a tape head with respect to longitudinal servo tracks of the tape, a fine actuator is configured to translate the head laterally, and a coarse actuator is configured to translate the fine actuator laterally. Position error is determined between the head and a desired position related to the servo track, and the fine actuator operated to translate the head laterally to reduce the position error. In the embodiment, lateral shift excursion is sensed from the position error, and the coarse actuator is positioned substantially at a midpoint of the lateral shift excursion. Thus, the fine actuator follows the lateral shift excursions, while the coarse actuator remains at the midpoint.
摘要翻译：方法，伺服系统和数据存储驱动器遵循纵向磁带的横向偏移偏移，例如，从无法兰磁带引导件。伺服传感器被配置为感测磁带头相对于磁带的纵向伺服磁道的横向位置，精细致动器构造成横向地平移磁头，并且粗调节器构造成横向平移精细致动器。在头部和与伺服轨迹相关的所需位置之间确定位置误差，并且精细致动器被操作以横向平移头部以减少位置误差。在该实施例中，从位置误差检测横向偏移偏移，粗略致动器基本上位于横向偏移偏移的中点。因此，精细致动器遵循横向偏移偏移，而粗调制器保持在中点。

7. 发明申请

WO2007088139A1 USING AT LEAST ONE SERVO CHANNEL TO PROVIDE TIMING RECOVERY AND TIMING INFORMATION TO DATA CHANNELS 审中-公开
标题翻译：使用至少一个服务器通道来为数据通道提供时序恢复和时序信息
公开(公告)号：WO2007088139A1
公开(公告)日：2007-08-09
申请号：PCT/EP2007/050772
申请日：2007-01-26
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , BUI, Nhan, Xuan , CHERUBINI, Giovanni , ELEFTHERIOU, Evangelos , HUTCHINS, Robert, Allen , JAQUETTE, Glen, Alan , JELITTO, Jens , OELCER, Sedat , TAYLOR, Mark, Allan
发明人： BUI, Nhan, Xuan , CHERUBINI, Giovanni , ELEFTHERIOU, Evangelos , HUTCHINS, Robert, Allen , JAQUETTE, Glen, Alan , JELITTO, Jens , OELCER, Sedat , TAYLOR, Mark, Allan
IPC分类号： G11B27/10 , G11B20/10
CPC分类号： G11B27/36 , G11B20/10037 , G11B20/10046 , G11B20/10055 , G11B20/10212 , G11B20/10259 , G11B20/1403 , G11B20/1876 , G11B27/10 , G11B2020/10592 , G11B2220/90 , G11B2220/95
摘要： Provided is a read channel, storage drive, and method to process signals read from a storage medium. At least one data channel including an interpolator and equalizer and a servo channel includes an interpolator. A timing recovery function processes a timing error from the interpolator in the servo channel to calculate interpolation timing information used by the interpolator to interpolate a servo channel signal. A path is coupled to the timing recovery function and the interpolator in the at least one data channel to communicate the interpolation timing information to the interpolator in the at least one data channel. The interpolator in the at least one data channel is configured to use the interpolation timing information to interpolate an asynchronous data channel signal.
摘要翻译：提供了一种用于处理从存储介质读取的信号的读通道，存储驱动器和方法。包括内插器和均衡器和伺服信道的至少一个数据信道包括内插器。定时恢复功能处理来自伺服信道中的内插器的定时误差，以计算内插器使用的内插定时信息来内插伺服信道信号。路径耦合到至少一个数据信道中的定时恢复功能和内插器，以将内插定时信息传送到至少一个数据信道中的内插器。至少一个数据信道中的内插器被配置为使用内插定时信息内插异步数据信道信号。

8. 发明申请

WO2011054570A1 CANCELLATION OF TIME-VARYING PERIODIC DISTURBANCES IN SERVO CONTROL SYSTEMS 审中-公开
标题翻译：在伺服控制系统中取消时变周期性干扰
公开(公告)号：WO2011054570A1
公开(公告)日：2011-05-12
申请号：PCT/EP2010/063345
申请日：2010-09-13
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , PANTAZI, Angeliki , ELEFTHERIOU, Evangelos , JELITTO, Jens , BUI, Nhan, Xuan
发明人： PANTAZI, Angeliki , ELEFTHERIOU, Evangelos , JELITTO, Jens , BUI, Nhan, Xuan
IPC分类号： G11B5/584 , G11B5/008
CPC分类号： G11B5/584 , G11B5/00813
摘要： Various embodiments for addressing time-varying periodic disturbances in a servo control system are provided. Each of a plurality of coefficients is updated based on an estimation of at least one disturbance frequency. The updated plurality of coefficients is provided to at least one peak filter modifying an input signal of the servo control system. The peak filter is operable in view of the updated plurality of coefficients to cancel at least 10 one of the time-varying periodic disturbances.
摘要翻译：提供了用于解决伺服控制系统中的时变周期性干扰的各种实施例。基于至少一个干扰频率的估计来更新多个系数中的每一个。更新的多个系数被提供给修改伺服控制系统的输入信号的至少一个峰值滤波器。考虑到更新的多个系数，峰值滤波器可操作以消除时变周期性干扰中的至少10个。

9. 发明申请

WO2019092534A1 HYBRID SERVO PATTERN CONFIGURATIONS FOR MAGNETIC TAPE 审中-公开
公开(公告)号：WO2019092534A1
公开(公告)日：2019-05-16
申请号：PCT/IB2018/058336
申请日：2018-10-25
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , IBM (CHINA) INVESTMENT COMPANY LIMITED
发明人： TSURUTA, Kazuhiro , BUI, Nhan, Xuan , CHERUBINI, Giovanni , FURRER, Simeon , LANTZ, Mark, Alfred
IPC分类号： G11B5/09
摘要： A tape drive-implemented method includes: determining a servo band configuration of servo bands on a magnetic tape, using servo readers on a magnetic tape head to read one or more of the servo bands based on the determined servo band configuration, and using information read from the one or more of the servo bands to position the magnetic tape head relative to the magnetic tape. An array of data transducers is positioned along the magnetic tape head, the array extending perpendicular to a direction of travel of the magnetic tape. Moreover, a group of the servo readers is positioned at each end of the array of data transducers, and a distance between each of the immediately adjacent servo readers in each of the groups of servo readers is less than or equal to one third of a prespecified width of each of the servo bands.

10. 发明申请

WO2022069312A1 SERVO PATTERN FOR SKEW BASED TAPE DIMENSIONAL STABILITY COMPENSATION 审中-公开
公开(公告)号：WO2022069312A1
公开(公告)日：2022-04-07
申请号：PCT/EP2021/076039
申请日：2021-09-22
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED
发明人： BUI, Nhan, Xuan , LANTZ, Mark, Alfred , FURRER, Simeon , BISKEBORN, Robert
IPC分类号： G11B5/584 , G11B21/08
摘要： In response to a rotation of timing-based servo (TBS) patterns of a first servo band and a second servo band, heights of top and bottom portions of servo stripes of servo frames of the TBS patterns are adjusted to compensate for changes in a usable height of the servo stripes caused by the rotation.

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