公开(公告)号：US20120307390A1

公开(公告)日：2012-12-06

申请号：US13152225

申请日：2011-06-02

申请人： Nhan X. Bui ,  Reed A. Hancock ,  Tomoko Taketomi

发明人： Nhan X. Bui ,  Reed A. Hancock ,  Tomoko Taketomi

IPC分类号： G11B27/36

CPC分类号： G11B5/56 ,  G11B5/00817 ,  G11B5/584 ,  G11B15/602 ,  G11B20/10388 ,  G11B2220/93

摘要： In one embodiment, a tape drive system includes a magnetic head having at least one servo sensor for track-following at least one defined servo track of a longitudinal tape, a tape motion controller configured to move the longitudinal tape past the magnetic head, a compound actuator configured to translate the magnetic head laterally with respect to the longitudinal tape, and a control configured to track-follow the at least one defined servo track by reducing a position error between the magnetic head and a desired position, transition from a write state to a monitor state when the position error is greater than a threshold, transition from the monitor state to a stop write state when the position error is greater than the threshold for a first period, and transition from the monitor state to the write state when the position error is less than the threshold for a second period.

摘要翻译： 在一个实施例中，磁带驱动系统包括具有至少一个伺服传感器的磁头，该伺服传感器跟踪至少一个所定义的纵向磁带的伺服磁道，配置成使纵向磁带移动通过磁头的磁带运动控制器， 致动器被配置为相对于纵向带横向地平移磁头;以及控制器，其被配置为通过减小磁头与期望位置之间的位置误差跟踪至少一个定义的伺服轨迹，控制器从写入状态转换到 当位置误差大于阈值时的监视状态，当位置误差大于第一周期的阈值时从监视状态转变到停止写入状态，以及当位置误差大于阈值时从监视状态转变到写入状态 错误小于第二个周期的阈值。

公开(公告)号：US20110273793A1

公开(公告)日：2011-11-10

申请号：US12776944

申请日：2010-05-10

申请人： NHAN X. BUI ,  GIOVANNI CHERUBINI ,  JENS JELITTO ,  KAZUHIRO TSURUTA

发明人： NHAN X. BUI ,  GIOVANNI CHERUBINI ,  JENS JELITTO ,  KAZUHIRO TSURUTA

IPC分类号： G11B27/36

CPC分类号： G11B5/00878 ,  G11B5/584 ,  G11B20/1403 ,  G11B2020/1484 ,  G11B2220/90

摘要： In a magnetic tape drive having a servo read system with at least one read head, the system configured to read servo pattern information as a magnetic tape is moved longitudinally with respect to the at least one read head, the servo pattern comprising a timing-based servo pattern comprising an even number of bursts of sloped magnetic stripes, adjacent bursts oppositely sloped, alternate bursts identically sloped, an embodiment of a method determines the time between detection from the read head of a same stripe of alternate bursts of a pattern; determines the time between detection from the read head of stripes of a burst of a pattern; and determines a ratio of the determined times. The ratio is compared to a threshold, wherein the threshold comprises a differentiation between different servo pattern types.

摘要翻译： 在具有至少一个读取头的伺服读取系统的磁带驱动器中，配置为读取作为磁带的伺服模式信息的系统相对于至少一个读取头纵向移动，伺服模式包括基于时序的 伺服模式包括偶数数量的倾斜磁条脉冲串，相邻突发脉冲相对倾斜，相同倾斜的交替脉冲串，方法的实施例确定从图形的相同条纹的同一条带的读出头检测之间的时间; 确定从图案的突发的条带的读取头检测之间的时间; 并确定所确定的时间的比率。 该比率与阈值进行比较，其中阈值包括不同伺服模式类型之间的区分。

公开(公告)号：US20110216441A1

公开(公告)日：2011-09-08

申请号：US12716956

申请日：2010-03-03

申请人： NHAN X. BUI ,  RANDY C. INCH ,  EIJI OGURA

发明人： NHAN X. BUI ,  RANDY C. INCH ,  EIJI OGURA

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： The method employs a servo system for positioning a head laterally to follow lateral motion of a longitudinal tape having longitudinal defined servo track(s), the servo system comprising a servo element configured to sense lateral position of the head with respect to an acquired servo track, a fine actuator configured to translate the head laterally with respect to the longitudinal tape, and a position error signal loop to operate the fine actuator to translate the head laterally to reduce position error. If the servo element is positioned away from the defined servo track(s), a continuous position error offset signal is applied to the fine actuator in a direction towards the defined servo track(s), whereby the fine actuator translates the head in accordance with the continuous position error offset signal; and, in response to the servo system acquiring the defined servo track(s), the continuous position error offset signal is discontinued.

摘要翻译： 该方法采用伺服系统来横向定位头部以跟随具有纵向限定的伺服轨道的纵向带的侧向运动，该伺服系统包括伺服元件，该伺服元件被配置为感测头部相对于所获取的伺服轨道的横向位置 ，精细致动器，被配置为相对于纵向带横向地平移头部;以及位置误差信号回路，用于操作精细致动器以横向平移头部以减少位置误差。 如果伺服元件远离定义的伺服轨道定位，则连续的位置误差偏移信号在朝向所定义的伺服轨道的方向上被施加到精细致动器，由此精细致动器根据 连续位置误差偏移信号; 并且响应于伺服系统获取所定义的伺服轨迹，连续位置误差偏移信号被停止。

公开(公告)号：US20110199701A1

公开(公告)日：2011-08-18

申请号：US12707316

申请日：2010-02-17

申请人： NHAN X. BUI ,  REED A. HANCOCK ,  RANDY C. INCH ,  KEVIN B. JUDD ,  KAZUHIRO TSURUTA

发明人： NHAN X. BUI ,  REED A. HANCOCK ,  RANDY C. INCH ,  KEVIN B. JUDD ,  KAZUHIRO TSURUTA

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. In a read/write head, two servo read heads are spaced laterally on a first head module, and a servo read head is on a second head module spaced longitudinally from the first module. A method comprises initially sensing a tape servo track with one servo read head of the first module and the servo read head of the second module 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： 一种用于检测纵向磁带的伺服磁道的伺服检测系统。 在读/写头中，两个伺服读头在第一头模块上横向隔开，并且伺服读头位于与第一模块纵向间隔开的第二头模块上。 一种方法包括：首先利用第一模块的一个伺服读取头和第二模块的伺服读取头来感测磁带伺服磁道，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。

公开(公告)号：US20110176237A1

公开(公告)日：2011-07-21

申请号：US12691604

申请日：2010-01-21

申请人： Nhan X. Bui ,  Giovanni Cherubini ,  Evangelos S. Eleftheriou ,  Reed A. Hancock ,  Robert A. Hutchins

发明人： Nhan X. Bui ,  Giovanni Cherubini ,  Evangelos S. Eleftheriou ,  Reed A. Hancock ,  Robert A. Hutchins

IPC分类号： G11B5/09 ,  G11B17/00

CPC分类号： G11B21/103 ,  G11B5/584 ,  G11B15/18

摘要： According to one embodiment, a magnetic recording tape includes a plurality of servo tracks, each servo track comprising a series of magnetically defined bars having an average height of between about 80 microns and about 120 microns, wherein an average stripe angle of the bars is between about 10° and about 25°. A stripe angle is measured between a longitudinal axis of each respective bar and a line oriented perpendicular to a direction of tape travel and parallel to a plane of the tape, wherein an average stripe width of the bars is between about 1.0 micron and about 2.2 microns and an average servo frame length of groups of the bars comprising a servo frame is between about 120 microns and about 180 microns. In more embodiments, a servo format and a system including a servo format are disclosed, along with other embodiments of magnetic tapes.

摘要翻译： 根据一个实施例，磁记录带包括多个伺服轨道，每个伺服轨道包括一系列具有介于约80微米与约120微米之间的平均高度的磁力限定的杆，其中杆的平均条纹角在 约10°和约25°。 在每个相应的条的纵向轴线和垂直于带行进方向并且平行于带的平面定向的线之间测量条纹角度，其中条的平均条纹宽度在约1.0微米至约2.2微米之间 并且包括伺服框架的杆的组的平均伺服框架长度在大约120微米和大约180微米之间。 在更多实施例中，公开了伺服格式和包括伺服格式的系统以及磁带的其他实施例。

公开(公告)号：US20100177885A1

公开(公告)日：2010-07-15

申请号：US12351666

申请日：2009-01-09

申请人： Allen K. Bates ,  Nhan X. Bui ,  Brian G. Goodman ,  Daniel J. Winarski

发明人： Allen K. Bates ,  Nhan X. Bui ,  Brian G. Goodman ,  Daniel J. Winarski

IPC分类号： H04L9/28 ,  G06Q10/00

CPC分类号： G06F21/6218 ,  G06Q10/0637

摘要： Methods are provided for managing data encryption for a data storage library. An implementation assessment is performed for a customer and, in response to the implementation assessment, a set of customizations are generated for an encryption command communications appliance to enable the appliance to communicate with an encryption-capable storage device and a data storage library controller within the data storage library and with an encryption key manager (EKM) coupled to the data storage library. The encryption command communications appliance is configured with the set of customizations and the configured encryption command communications appliance is installed in the data storage library coupled to the library controller, the storage device and the EKM.

摘要翻译： 提供了用于管理数据存储库的数据加密的方法。 为客户执行实施评估，并且响应于实施评估，为加密命令通信设备生成一组定制，以使设备能够与内部的加密功能存储设备和数据存储库控制器通信 数据存储库和与数据存储库耦合的加密密钥管理器（EKM）。 加密命令通信设备配置有一组自定义，并且配置的加密命令通信设备安装在耦合到库控制器，存储设备和EKM的数据存储库中。

公开(公告)号：US20090185310A1

公开(公告)日：2009-07-23

申请号：US12017206

申请日：2008-01-21

申请人： Allen Keith Bates ,  Nhan X. Bui ,  Kevin B. Judd ,  Daniel J. Winarski

发明人： Allen Keith Bates ,  Nhan X. Bui ,  Kevin B. Judd ,  Daniel J. Winarski

IPC分类号： G11B33/14

CPC分类号： G11B33/1446 ,  G11B5/41

摘要： A method for preventing dust from entering a tape drive system is disclosed. Initially, a cooling fan is allowed to rotate in one direction to provide airflow to the tape drive system. In response to a detection of a loading or unloading of a tape cartridge or a head brush operation, the cooling fan is allowed to rotate in a different direction to provide airflow in an opposite direction in order to blow any dust and debris, which may be introduced from a tape cartridge or may already be resident on a tape head, out the front of the tape drive system.

摘要翻译： 公开了一种防止灰尘进入磁带驱动系统的方法。 最初，允许冷却风扇沿一个方向旋转以向磁带驱动系统提供气流。 响应于检测到带盒的装载或卸载或头刷操作，允许冷却风扇在不同的方向上旋转以提供沿相反方向的气流，以便吹出任何灰尘和碎屑，这可能是 从磁带盒引入或可能已经驻留在磁带头上，从磁带机系统的前面。

公开(公告)号：US5426625A

公开(公告)日：1995-06-20

申请号：US252141

申请日：1994-05-31

申请人： Nhan X. Bui ,  Alan A. Fennema ,  Robert A. Klem

发明人： Nhan X. Bui ,  Alan A. Fennema ,  Robert A. Klem

IPC分类号： G11B7/085 ,  G11B21/08 ,  G11B7/00

CPC分类号： G11B7/08541 ,  G11B7/08511

摘要： In an optical disk recorder, during the sensing of closely-spaced, position-indicating, machine-sensible indicia, a first peak of a track error signal is detected. In response to the first peak being detected, a half-track counter is decremented from a value which depends upon the position of the destination track relative to a current track. In response to the occurrence of a selected value of the half-track counter and the presence of a zero crossing of the tracking error signal, a first timer is activated to mask any defects occurring during the selected first half cycle of the last cycle of the tracking error signal. The half-track counter is again decremented in response to a second peak being detected and the occurrence of a next-to-last zero crossing of the tracking error signal and a second timer is then activated to mask any subsequent defects occurring during the second half cycle of the tracking error signal. The seek operation is terminated when the count value in the half-track counter equals zero and a final zero crossing is detected. Thereafter, a track following operation is activated.

摘要翻译： 在光盘记录器中，在感测紧密间隔的位置指示的机器敏感标记期间，检测到轨道误差信号的第一峰值。 响应于检测到的第一峰值，半轨道计数器从取决于目的地轨道相对于当前轨道的位置的值减小。 响应于半轨道计数器的选定值的出现和跟踪误差信号的零交叉的存在，激活第一定时器以掩蔽在所选择的最后一个周期的所选择的前半周期期间发生的任何缺陷 跟踪误差信号。 半轨道计数器响应于检测到的第二个峰值而再次减小，然后激活跟踪误差信号和第二计时器的下一个到最后的零交叉的发生，以掩盖在下半年期间发生的任何后续的缺陷 循环跟踪误差信号。 当半轨计数器中的计数值等于零并且检测到最终过零点时，寻道操作终止。 此后，跟踪操作被激活。