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1. 发明授权

US07175122B2 Compensation for tape breakage in a tape drive 失效
标题翻译：磁带驱动器中磁带损坏的补偿
公开(公告)号：US07175122B2
公开(公告)日：2007-02-13
申请号：US10765789
申请日：2004-01-26
申请人： Nhan Xuan Bui , Junichi Fukuda , Randy Clark Inch , Eiji Ogura , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Junichi Fukuda , Randy Clark Inch , Eiji Ogura , Kazuhiro Tsuruta
IPC分类号： G11B15/18
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。

2. 发明授权

US07364106B2 Compensation for tape breakage in a tape drive 失效
标题翻译：磁带驱动器中磁带损坏的补偿
公开(公告)号：US07364106B2
公开(公告)日：2008-04-29
申请号：US11674615
申请日：2007-02-13
申请人： Nhan Xuan Bui , Junichi Fukuda , Randy Clark Inch , Eiji Ogura , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Junichi Fukuda , Randy Clark Inch , Eiji Ogura , Kazuhiro Tsuruta
IPC分类号： G11B15/18
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。

3. 发明授权

US08405926B2 Tape drive velocity control 失效
标题翻译：磁带机速度控制
公开(公告)号：US08405926B2
公开(公告)日：2013-03-26
申请号：US12842938
申请日：2010-07-23
申请人： Nhan Xuan Bui , Reed Alan Hancock , Randy Clark Inch , Shuhei Nadehara , Eiji Ogura , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Reed Alan Hancock , Randy Clark Inch , Shuhei Nadehara , Eiji Ogura , Kazuhiro Tsuruta
IPC分类号： G11B15/52 , G11B15/46
CPC分类号： G11B15/32 , G11B15/46 , G11B15/52
摘要： In accordance with the present invention, a method of operating a magnetic tape drive, a magnetic tape drive and a servo control system are provided for obtaining and maintaining velocity control in a magnetic tape drive. In one embodiment, a method is provided for operating a magnetic tape drive. The tape drive includes a plurality of DC motors, and each DC motor has a plurality of Hall sensors. The DC motors are under the control of a servo system which is configured to read location information from the magnetic tape, and compute a primary tape velocity from the location information, and sense a secondary and tertiary velocity signal and compute a tape velocity based on one of the sensed secondary velocity signal and tertiary velocity. The method includes detecting if the primary velocity location information is available. In response to detecting that the primary velocity location information is available the primary velocity is employed to control the servo system. In response to detecting the primary velocity location information is unavailable then one of a secondary or a tertiary velocity signal is employed. The secondary velocity signal is employed when an absolute value of a term related to tape velocity is less than a predetermined value. The tertiary velocity signal is employed when the absolute value of the term related to tape velocity is greater than the predetermined value.
摘要翻译：根据本发明，提供了一种操作磁带驱动器，磁带驱动器和伺服控制系统的方法，用于获得和维持磁带驱动器中的速度控制。在一个实施例中，提供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，并且每个DC电动机具有多个霍尔传感器。直流电动机处于伺服系统的控制之下，伺服系统被配置为从磁带读取位置信息，并从位置信息计算主带速度，并感测二次和三次速度信号，并基于一个速度信号计算磁带速度的感测二次速度信号和三次速度。该方法包括检测主速度位置信息是否可用。响应于检测到主速度位置信息可用，主速度被用于控制伺服系统。响应于检测到主速度位置信息不可用，则采用次速或三速信号中的一个。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。当与磁带速度相关的项的绝对值大于预定值时，采用三次速度信号。

4. 发明申请

US20120019953A1 'Tape Drive Velocity Control' 失效
标题翻译： “磁带驱动器速度控制”
公开(公告)号：US20120019953A1
公开(公告)日：2012-01-26
申请号：US12842938
申请日：2010-07-23
申请人： Nhan Xuan Bui , Reed Alan Hancock , Randy Clark Inch , Shuhei Nadehara , Eiji Ogura , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Reed Alan Hancock , Randy Clark Inch , Shuhei Nadehara , Eiji Ogura , Kazuhiro Tsuruta
IPC分类号： G11B19/02
CPC分类号： G11B15/32 , G11B15/46 , G11B15/52
摘要： In accordance with the present invention, a method of operating a magnetic tape drive, a magnetic tape drive and a servo control system are provided for obtaining and maintaining velocity control in a magnetic tape drive. In one embodiment, a method is provided for operating a magnetic tape drive. The tape drive includes a plurality of DC motors, and each DC motor has a plurality of Hall sensors. The DC motors are under the control of a servo system which is configured to read location information from the magnetic tape, and compute a primary tape velocity from the location information, and sense a secondary and tertiary velocity signal and compute a tape velocity based on one of the sensed secondary velocity signal and tertiary velocity. The method includes detecting if the primary velocity location information is available. In response to detecting that the primary velocity location information is available the primary velocity is employed to control the servo system. In response to detecting the primary velocity location information is unavailable then one of a secondary or a tertiary velocity signal is employed. The secondary velocity signal is employed when an absolute value of a term related to tape velocity is less than a predetermined value. The tertiary velocity signal is employed when the absolute value of the term related to tape velocity is greater than the predetermined value.
摘要翻译：根据本发明，提供了一种操作磁带驱动器，磁带驱动器和伺服控制系统的方法，用于获得和维持磁带驱动器中的速度控制。在一个实施例中，提供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，并且每个DC电动机具有多个霍尔传感器。直流电动机处于伺服系统的控制之下，伺服系统被配置为从磁带读取位置信息，并从位置信息计算主带速度，并感测二次和三次速度信号，并基于一个速度信号计算磁带速度的感测二次速度信号和三次速度。该方法包括检测主速度位置信息是否可用。响应于检测到主速度位置信息可用，主速度被用于控制伺服系统。响应于检测到主速度位置信息不可用，则采用次速或三速信号中的一个。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。当与磁带速度相关的项的绝对值大于预定值时，采用三次速度信号。

5. 发明申请

US20080223968A1 APPARATUS, SYSTEM, AND METHOD FOR CHECKING TAPE REEL MOTION 审中-公开
标题翻译：装置，系统和检查胶卷运动的方法
公开(公告)号：US20080223968A1
公开(公告)日：2008-09-18
申请号：US11686840
申请日：2007-03-15
申请人： NHAN Xuan BUI , Reed Alan Hancock , Randy Clark Inch , Eiji Ogura , Kazuhiro Tsuruta
发明人： NHAN Xuan BUI , Reed Alan Hancock , Randy Clark Inch , Eiji Ogura , Kazuhiro Tsuruta
IPC分类号： G03B1/58
CPC分类号： G11B15/32
摘要： An apparatus, system, and method are disclosed for checking tape reel motion. A control module directs a leading servo to apply torque to a leading reel and a trailing servo to apply torque to a trailing reel, wherein the control module directs the leading servo to apply an initial positive torque in a tape motion direction and directs the trailing servo to apply an initial negative torque counter to the tape motion direction. If there is no change in an angular position of the leading and trailing reels, the control module incrementally sums a first incremental positive torque to the leading torque to increase the leading torque and a second incremental positive torque to the trailing torque until there is a change in the angular position of the leading and trailing reels and/or until the torques exceed torque limits.
摘要翻译：公开了用于检查磁带卷轴运动的装置，系统和方法。控制模块引导前置伺服器将扭矩施加到前导卷轴和拖尾伺服器以向后拖线器施加扭矩，其中控制模块引导前导伺服器施加带运动方向上的初始正扭矩并引导拖尾伺服对带运动方向施加初始负扭矩计数器。如果前导和后退卷轴的角位置没有改变，则控制模块将第一增量正转矩递增地与前导转矩相加，以将前导转矩和第二增量正转矩增加到拖曳转矩直到有变化在前导和后退卷轴的角位置和/或直到扭矩超过转矩限制。

6. 发明授权

US07102846B2 Identification of laterally positioned servo bands employing differentiating characteristics of servo patterns 失效
公开(公告)号：US07102846B2
公开(公告)日：2006-09-05
申请号：US11215132
申请日：2005-08-29
申请人： Nhan Xuan Bui , James Howard Eaton , Junichi Fukuda , Glen Alan Jaquette , Eiji Ogura , Mark Allan Taylor , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , James Howard Eaton , Junichi Fukuda , Glen Alan Jaquette , Eiji Ogura , Mark Allan Taylor , Kazuhiro Tsuruta
IPC分类号： G11B5/584 , G11B5/09
CPC分类号： G11B5/584 , G11B5/00813 , G11B5/78
摘要： In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example, the patterns of a separate servo band have differing azimuthal orientations of detectable transitions with respect to another servo band, such as being laterally inverted. In another, variations in the width of gaps of patterns are made with respect to another servo band. In another, variations are made in the number of the detectable transitions of patterns with respect to the patterns of another servo band.

7. 发明授权

US07102847B2 Identification of laterally positioned servo bands employing differentiating characteristics of servo patterns 有权
公开(公告)号：US07102847B2
公开(公告)日：2006-09-05
申请号：US11215456
申请日：2005-08-29
申请人： Nhan Xuan Bui , James Howard Eaton , Junichi Fukuda , Glen Alan Jaquette , Eiji Ogura , Mark Allan Taylor , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , James Howard Eaton , Junichi Fukuda , Glen Alan Jaquette , Eiji Ogura , Mark Allan Taylor , Kazuhiro Tsuruta
IPC分类号： G11B5/584 , G11B5/09
CPC分类号： G11B5/584 , G11B5/00813 , G11B5/78
摘要： In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example, the patterns of a separate servo band have differing azimuthal orientations of detectable transitions with respect to another servo band, such as being laterally inverted. In another, variations in the width of gaps of patterns are made with respect to another servo band. In another, variations are made in the number of the detectable transitions of patterns with respect to the patterns of another servo band.

8. 发明授权

US06937413B2 Tape servo information with superimposed data information providing servo band identification 有权
标题翻译：磁带伺服信息与叠加数据信息提供伺服带识别
公开(公告)号：US06937413B2
公开(公告)日：2005-08-30
申请号：US10638080
申请日：2003-08-08
申请人： Nhan Xuan Bui , James Howard Eaton , Junichi Fukuda , Glen Alan Jaquette , Eiji Ogura , Mark Allan Taylor , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , James Howard Eaton , Junichi Fukuda , Glen Alan Jaquette , Eiji Ogura , Mark Allan Taylor , Kazuhiro Tsuruta
IPC分类号： G11B5/008 , G11B5/584 , G11B5/78 , G11B5/09
CPC分类号： G11B5/584 , G11B5/00813 , G11B5/78
摘要： In magnetic tape having separate longitudinal servo bands of servo information with superimposed data information, the separate servo bands have selected different superimposed data information, to identify the separate servo bands for independent addressability. The servo information comprises non-parallel laterally extending transitions to indicate lateral positioning, and the selected different superimposed data information may comprise a lack thereof in portion(s) of the servo bands. Where the superimposed data information is longitudinal position information of the tape, the selected different superimposed data information may comprise different longitudinal position information of one or more servo band(s). The selected different superimposed data information may comprise a band identifier in the superimposed data information of one or more of the servo bands.
摘要翻译：在具有具有叠加数据信息的伺服信息的单独的纵向伺服带的磁带中，分离的伺服带已经选择了不同的叠加数据信息，以识别用于独立寻址能力的单独的伺服带。伺服信息包括非平行横向延伸的转换以指示横向定位，并且所选择的不同叠加数据信息可能包括在伺服带的一部分中的缺乏。在叠加数据信息是磁带的纵向位置信息的情况下，所选择的不同叠加数据信息可以包括一个或多个伺服带的不同纵向位置信息。所选择的不同的叠加数据信息可以包括一个或多个伺服带的叠加数据信息中的频带标识符。

9. 发明授权

US07002763B2 Identification of laterally positioned servo bands employing differentiating characteristics of servo patterns 失效
标题翻译：使用伺服模式的微分特性识别横向定位的伺服带
公开(公告)号：US07002763B2
公开(公告)日：2006-02-21
申请号：US10638041
申请日：2003-08-08
申请人： Nhan Xuan Bui , James Howard Eaton , Junichi Fukuda , Glen Alan Jaquette , Eiji Ogura , Mark Allan Taylor , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , James Howard Eaton , Junichi Fukuda , Glen Alan Jaquette , Eiji Ogura , Mark Allan Taylor , Kazuhiro Tsuruta
IPC分类号： G11B5/09
CPC分类号： G11B5/584 , G11B5/00813 , G11B5/78
摘要： In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example, the patterns of a separate servo band have differing azimuthal orientations of detectable transitions with respect to another servo band, such as being laterally inverted. In another, variations in the width of gaps of patterns are made with respect to another servo band. In another, variations are made in the number of the detectable transitions of patterns with respect to the patterns of another servo band.
摘要翻译：在具有横向跨越带的位置的分离的图案的带的带中，单独的伺服带的图案相对于另一个分离的伺服带的图案具有至少一个微分特性。微分特性允许识别单独的伺服带。例如，单独的伺服带的图案具有相对于另一个伺服带的可检测转变的方位取向不同，例如横向倒置。另一方面，相对于另一个伺服带，进行图案间隙宽度的变化。另一方面，在相对于另一个伺服带的图案的图案的可检测转变的数量中进行变化。

10. 发明授权

US08054576B2 Skew actuator to servo track zero reference 有权
标题翻译：倾斜执行器到伺服跟踪零参考
公开(公告)号：US08054576B2
公开(公告)日：2011-11-08
申请号：US12707316
申请日：2010-02-17
申请人： Nhan Xuan Bui , Reed Alan Hancock , Randy Clark Inch , Kevin Bruce Judd , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Reed Alan Hancock , Randy Clark Inch , Kevin Bruce Judd , Kazuhiro Tsuruta
IPC分类号： G11B5/584 , G11B20/20
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。

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