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51.发明授权Using at least one servo channel to provide timing recovery and timing information to data channels 失效使用至少一个伺服通道来向数据通道提供定时恢复和定时信息公开(公告)号：US07433142B2
公开(公告)日：2008-10-07
申请号：US11346391
申请日：2006-02-01
申请人： Nhan Xuan Bui , Giovanni Cherubini , Evangelos S. Eleftheriou , Robert Allen Hutchins , Glen Alan Jaquette , Jens Jelitto , Sedat Oelcer , Mark A. Taylor
发明人： Nhan Xuan Bui , Giovanni Cherubini , Evangelos S. Eleftheriou , Robert Allen Hutchins , Glen Alan Jaquette , Jens Jelitto , Sedat Oelcer , Mark A. Taylor
IPC分类号： G11B5/09
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。 所述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来内插异步数据信道信号。
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52.发明申请Back EMF Reduction in a Storage Drive Using Pulse Width Modulation in a Closed Loop Motor Control System 有权在闭环电机控制系统中使用脉冲宽度调制的存储驱动器中的EMF减少公开(公告)号：US20080180828A1
公开(公告)日：2008-07-31
申请号：US11669615
申请日：2007-01-31
申请人： Allen K. Bates , Nhan Xuan Bui , Reed A. Hancock , Louis P. Russo
发明人： Allen K. Bates , Nhan Xuan Bui , Reed A. Hancock , Louis P. Russo
摘要： A storage drive implements a method for a BEMF voltage reduction during a deceleration period of an electric motor of the storage drive. In operation, the electric motor is disconnected from a power supply during an entirety of the deceleration period of the electric motor to prevent any flow of a BEMF current into the power supply, and the electric motor is connected to a power return during a segment or an entirety of the deceleration period of the electric motor to dissipate any BEMF voltage within the electric motor.
摘要翻译： 存储驱动器在存储驱动器的电动机的减速期间实施用于BEMF电压降低的方法。 在电动机的整个减速期间，电动机与电源断开，以防止BEMF电流流向电源，电动马达与电力回路连接， 电动机的整个减速期间，以耗散电动机内的任何BEMF电压。
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公开(公告)号：US20080174897A1
公开(公告)日：2008-07-24
申请号：US11624538
申请日：2007-01-18
IPC分类号： G11B5/09
CPC分类号： G11B5/584
摘要： An apparatus, system, and method are disclosed for formatting a timing-based servo pattern on a magnetic tape. A first write head concurrently writes a base number of stripes to a plurality of first stripe patterns with a first and third element and writes the base number of stripes to a plurality of second stripe patterns with a second and fourth element of a first write head in response to at least one first write signal. A second write head concurrently writes an incremental number of stripes to a specified first stripe pattern to form a first incremental stripe pattern with a fifth write element and writes the incremental number of stripes to a specified second stripe pattern to form a second incremental stripe pattern with a sixth write element.
摘要翻译： 公开了一种在磁带上格式化基于时序的伺服模式的装置，系统和方法。 第一写入头同时向第一和第三元素的多个第一条带图案中写入基本数量的条带，并将基本条数写入多个第二条纹图案，其中第一写入头的第二和第四元素在 响应于至少一个第一写入信号。 第二写头同时将增加数量的条带写入指定的第一条纹图案以形成具有第五写入元件的第一增量条纹图案，并将增量数量的条纹写入指定的第二条纹图案以形成第二增量条纹图案， 第六个写元素。
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54.发明授权公开(公告)号：US07403350B2
公开(公告)日：2008-07-22
申请号：US11535328
申请日：2006-09-26
摘要： Multiple servo sensors are laterally displaced over a distance less than the transverse width of timing based servo track laterally extending transitions. The servo sensors are configured to sense the transitions, and servo detection logic detects the relative timings of the laterally extending transitions sensed by the laterally displaced servo sensors as the magnetic tape is moved in the longitudinal direction. Logic is configured to determine from the relative timings of the sensed transitions for at least one known set of laterally extending transitions having differing slants, the lateral position of a servo sensor by employing the relative timing detected from one servo sensor and the relative timing detected from another servo sensor, or determine the longitudinal velocity of the magnetic tape by determining the difference between the relative timing detected from one servo sensor and the relative timing detected from another servo sensor.
摘要翻译： 多个伺服传感器在比基于定时的伺服轨道横向延伸过渡的横向宽度小的距离上横向移位。 伺服传感器被配置为感测转换，并且当磁带沿纵向移动时，伺服检测逻辑检测由侧向移位的伺服传感器感测到的横向延伸过渡的相对定时。 逻辑被配置为根据对于具有不同倾斜度的至少一个已知的一组横向延伸的转换来确定感测到的转换的相对定时，伺服传感器的横向位置通过采用从一个伺服传感器检测到的相对定时和从 或者通过确定从一个伺服传感器检测到的相对定时与从另一个伺服传感器检测到的相对定时之间的差来确定磁带的纵向速度。
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55.发明申请MULTIPLE SERVO SENSOR CONFIGURATION FOR MAGNETIC TAPE TIMING BASED SERVO 失效用于基于磁带时序的SERVO的多个伺服传感器配置公开(公告)号：US20080074779A1
公开(公告)日：2008-03-27
申请号：US11535328
申请日：2006-09-26
摘要： Multiple servo sensors are laterally displaced over a distance less than the transverse width of timing based servo track laterally extending transitions. The servo sensors are configured to sense the transitions, and servo detection logic detects the relative timings of the laterally extending transitions sensed by the laterally displaced servo sensors as the magnetic tape is moved in the longitudinal direction. Logic is configured to determine from the relative timings of the sensed transitions for at least one known set of laterally extending transitions having differing slants, the lateral position of a servo sensor by employing the relative timing detected from one servo sensor and the relative timing detected from another servo sensor, or determine the longitudinal velocity of the magnetic tape by determining the difference between the relative timing detected from one servo sensor and the relative timing detected from another servo sensor.
摘要翻译： 多个伺服传感器在比基于定时的伺服轨道横向延伸过渡的横向宽度小的距离上横向移位。 伺服传感器被配置为感测转换，并且当磁带沿纵向移动时，伺服检测逻辑检测由侧向移位的伺服传感器感测到的横向延伸过渡的相对定时。 逻辑被配置为根据对于具有不同倾斜度的至少一个已知的一组横向延伸的转换来确定感测到的转换的相对定时，伺服传感器的横向位置通过采用从一个伺服传感器检测到的相对定时和从 或者通过确定从一个伺服传感器检测到的相对定时与从另一个伺服传感器检测到的相对定时之间的差来确定磁带的纵向速度。
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56.发明授权公开(公告)号：US06940683B2
公开(公告)日：2005-09-06
申请号：US10776300
申请日：2004-02-10
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： Disclosed are a system, a method, and article of manufacture to provide for filtering a servo signal in a tape drive using a matched filter that is optimized for the operating tape velocity of the tape drive. A servo controller for track following on a tape uses a digital filter implementation of the matched filter to produce a filtered servo signal. The digital filter is optimized for different tape velocities by selecting digital filter coefficients for the digital filter that depend upon the tape velocity presently in use. The filtered servo signal is used by the servo controller to provide improved track following in a tape drive.
摘要翻译： 公开了一种系统，方法和制品，用于使用针对带驱动器的操作带速度优化的匹配滤波器来过滤磁带驱动器中的伺服信号。 用于磁带跟踪的伺服控制器使用匹配滤波器的数字滤波器来实现滤波后的伺服信号。 通过为数字滤波器选择数字滤波器系数，数字滤波器针对不同的磁带速度进行了优化，这取决于当前使用的磁带速度。 伺服控制器使用滤波后的伺服信号，在磁带驱动器中提供改进的跟踪。
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57.发明授权公开(公告)号：US08963463B2
公开(公告)日：2015-02-24
申请号：US13614896
申请日：2012-09-13
摘要： Dynamic reconfiguration-switching of motor windings is optimized between winding-configurations. Acceleration is traded off in favor of higher velocity upon detecting a tape storage drive is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant. The total back electromotive force (BEMF) is prohibited from inhibiting further acceleration to a higher angular-velocity.
摘要翻译： 电机绕组的动态重新配置切换在绕组配置之间进行了优化。 在检测到磁带存储驱动器处于最佳角速度以切换到最佳的较低转矩常数和电压常数时，加速度被消除以支持更高的速度。 总反向电动势（BEMF）被禁止禁止进一步加速到更高的角速度。
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公开(公告)号：US08749922B2
公开(公告)日：2014-06-10
申请号：US13555850
申请日：2012-07-23
申请人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
发明人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
IPC分类号： G11B15/60
CPC分类号： G11B15/60
摘要： A tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a grooved surface adapted to contact and engage a surface of the tape as the roller barrel rotates, and an actuator adapted to pivot the roller bearing surface when the actuator is actuated, to control the lateral position of a tape. In operation, in one embodiment, a roller barrel of the tiltable roller bearing is biased in a first position on a pivot axis, using magnetic attraction between a movable magnet and a return path structure of magnetically permeable material. The roller barrel is pivoted on the pivot axis by conducting current through a fixed coil to generate a magnetic field which is conducted by the return path structure to interact with the magnetic field of the magnet. Other embodiments are described and claimed.
摘要翻译： 磁带驱动系统的磁带移动限制包括可倾斜的带滚子轴承，其具有适于当滚筒旋转时接触和接合带的表面的开槽表面;以及致动器，其适于在致动器为 致动，以控制胶带的横向位置。 在一个实施例中，在一个实施例中，可旋转滚子轴承的滚筒是利用可移动磁体和导磁材料返回路径结构之间的磁吸引力在枢转轴线上被偏置在第一位置。 辊筒通过传导电流通过固定线圈在枢轴上枢转，以产生磁场，该磁场由返回路径结构传导以与磁体的磁场相互作用。 描述和要求保护其他实施例。
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公开(公告)号：US08743508B2
公开(公告)日：2014-06-03
申请号：US13555833
申请日：2012-07-23
申请人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
发明人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
IPC分类号： G11B15/60
CPC分类号： G11B15/60
摘要： A tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a grooved surface adapted to contact and engage a surface of the tape as the roller barrel rotates, and an actuator adapted to pivot the roller bearing surface when the actuator is actuated, to control the lateral position of a tape. In operation, in one embodiment, a roller barrel of the tiltable roller bearing is biased in a first position on a pivot axis, using magnetic attraction between a movable magnet and a return path structure of magnetically permeable material. The roller barrel is pivoted on the pivot axis by conducting current through a fixed coil to generate a magnetic field which is conducted by the return path structure to interact with the magnetic field of the magnet. Other embodiments are described and claimed.
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公开(公告)号：US08711511B2
公开(公告)日：2014-04-29
申请号：US13526529
申请日：2012-06-19
申请人： Angeliki Pantazi , Nhan Xuan Bui , Jens Jelitto
发明人： Angeliki Pantazi , Nhan Xuan Bui , Jens Jelitto
CPC分类号： G11B5/584
摘要： A tape drive configured to accurately position a head actuator in the presence of physical disturbances is disclosed. The tape drive includes a track-follow controller to position a head actuator over data tracks on magnetic tape. The tape drive further includes a disturbance observer configured to estimate a vibration disturbance and output a compensation signal to assist the track-follow controller to accurately position the head actuator over the data tracks in the presence of vibration. When estimating the vibration disturbance, the disturbance observer takes into account vibration frequency characteristics, such as frequency characteristics derived from a vibration specification associated with the tape drive, or frequency characteristics derived from known vibration disturbances experienced by the tape drive. A corresponding method is also disclosed.
摘要翻译： 公开了一种配置成在存在物理扰动的情况下精确地定位头致动器的磁带驱动器。 磁带驱动器包括轨道跟随控制器，用于将磁头执行器定位在磁带上的数据轨道上。 磁带驱动器还包括被配置为估计振动干扰并输出补偿信号的扰动观察器，以帮助跟踪跟踪控制器在存在振动的情况下将头致动器精确地定位在数据轨道上。 当估计振动扰动时，扰动观测器考虑振动频率特性，例如从与磁带驱动相关联的振动规格得出的频率特性，或由磁带机所经历的已知振动干扰导出的频率特性。 还公开了相应的方法。
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