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公开(公告)号：US07605992B2
公开(公告)日：2009-10-20
申请号：US12020961
申请日：2008-01-28
IPC分类号： G11B5/09
CPC分类号： G11B5/584 , G11B5/00813
摘要： A tape drive system which includes the ability to reliably reproduce LPOS information even if both of the servo channels of the tape drive system could not detect the LPOS information due to defects. The system recognizes that an LPOS sequence is sequentially incremented by one if a tape is moving in a forward direction and decremented by one if the tape is moving in a backward direction. This sequential property of the LPOS information lends itself to LPOS prediction, where the LPOS prediction is the previous LPOS value plus one if the tape is moving forward and the previous LPOS value minus one if the tape is moving backward. Even if the LPOS words from the two servo channels are both bad, but not all of the bits in the LPOS word are bad. The system uses the remaining good bits from the two servo channels to verify all of the bits of the LPOS prediction word.
摘要翻译： 即使磁带驱动系统的两个伺服通道都由于缺陷而无法检测到LPOS信息，也能够可靠地再现LPOS信息的磁带驱动系统。 如果磁带正向移动，则系统识别LPOS序列依次增加1，如果磁带沿向后方向移动，则LPOS序列递减1。 LPOS信息的这种顺序属性适用于LPOS预测，其中LPOS预测是先前的LPOS值，如果磁带正向前移动，则前一LPOS值减去1，如果磁带向后移动，则前一LPOS值减1。 即使来自两个伺服通道的LPOS字都是坏的，但LPOS字中的所有位都不好。 该系统使用来自两个伺服通道的剩余良好位来验证LPOS预测字的所有位。
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52.发明授权Apparatus, system, and method for the velocity proportional clocking of time base servo tape storage devices 失效时基伺服磁带存储装置的速度比例时钟的装置，系统和方法公开(公告)号：US07177114B1
公开(公告)日：2007-02-13
申请号：US11225930
申请日：2005-09-13
CPC分类号： G11B15/1875 , G11B5/584 , G11B15/4673 , G11B20/10222 , G11B20/16 , G11B27/107 , G11B2220/90
摘要： An apparatus, system, and method are disclosed for the velocity proportional clocking of time base servo tape storage devices. The apparatus, system, and method allow the velocity of time base servo tape storage devices to be adjusted and maintained by adjusting the frequency of a clock. In one embodiment, a velocity command is received and the clock signal frequency is varied in response to the command. A feedback control signal may then be produced to control the velocity of a time base servo device in response to the clock signal frequency, the feedback control signal being used to vary the velocity of a servo motor. In one embodiment, the velocity of the servo motor varies directly proportionate to the clock signal frequency.
摘要翻译： 公开了一种用于时基伺服带存储装置的速度比例时钟的装置，系统和方法。 该装置，系统和方法允许通过调节时钟的频率来调整和维持时基伺服带存储装置的速度。 在一个实施例中，接收速度命令并响应于该命令改变时钟信号频率。 然后可以产生反馈控制信号以响应于时钟信号频率来控制时基伺服装置的速度，反馈控制信号用于改变伺服电动机的速度。 在一个实施例中，伺服电动机的速度与时钟信号频率成正比。
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公开(公告)号：US07175122B2
公开(公告)日：2007-02-13
申请号：US10765789
申请日：2004-01-26
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。
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54.发明授权公开(公告)号：US06721126B1
公开(公告)日：2004-04-13
申请号：US09641135
申请日：2000-08-16
IPC分类号： G11B5584
CPC分类号： G11B5/584 , G11B5/5508 , G11B21/088 , G11B21/103
摘要： A method and position control for a servo system for positioning a head laterally with respect to defined servo tracks. The servo system comprises a servo sensor and detector for sensing lateral position of the head and a compound actuator having a fine actuator portion and a coarse actuator portion. The position control provides position indications for the coarse actuator portion, which may comprise a table relating predetermined nominal lateral position indications to the defined servo tracks. The position control positions the coarse actuator portion at an estimated position with respect to the defined servo tracks, and responds to the servo sensor to determine which servo track is closest to the estimated position. The position control sets the coarse actuator portion position indication to the predetermined nominal lateral position indication of the closest defined servo track, e.g., by looking it up in the table. This thereby corrects the indication of the position of the coarse actuator portion.
摘要翻译： 一种用于伺服系统的方法和位置控制，用于相对于限定的伺服轨道横向地定位头部。 伺服系统包括用于感测头部的横向位置的伺服传感器和检测器以及具有精细致动器部分和粗略致动器部分的复合致动器。 位置控制提供了粗略致动器部分的位置指示，该粗略致动器部分可以包括将预定的标称横向位置指示与定义的伺服轨迹相关联的工作台。 位置控制将粗略致动器部分定位在相对于所定义的伺服轨道的估计位置处，并且响应伺服传感器以确定哪个伺服轨道最接近估计位置。 位置控制将粗略的致动器部分位置指示设置为最接近的定义的伺服轨道的预定的标称横向位置指示，例如通过在表中查找。 由此校正了粗略的致动器部分的位置的指示。
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55.发明授权公开(公告)号：US06580581B1
公开(公告)日：2003-06-17
申请号：US09639076
申请日：2000-08-16
IPC分类号： G11B5584
CPC分类号： G11B5/584
摘要： A servo system and method position a head laterally with respect to magnetic tape longitudinal defined servo bands arranged in a longitudinally shifted pattern for identification, and separated by data tracks. A servo controller responds to a loss of lateral position, sensing an estimated longitudinal position of the magnetic tape. If the estimated longitudinal position is within a predetermined distance of an end of the tape, the servo controller operates a drive to continuously move the tape away from the sensed end. The servo controller senses a home lateral position sensor to determine whether a compound actuator is within a predetermined distance of the edge of the magnetic tape. If so, it operates the coarse actuator portion of the compound actuator to move laterally away from the edge of the magnetic tape; else, to move toward the edge. The servo controller senses a dual servo sensor to detect any two of the defined servo bands; and, upon sensing any two of the defined servo bands, detects the longitudinal shift to identify which ones of the two defined servo bands have been detected.
摘要翻译： 伺服系统和方法相对于以纵向移位的图案布置的磁带纵向限定的伺服带横向地定位头部，用于识别，并由数据轨道分隔。 伺服控制器响应横向位置的损失，感测估计的磁带的纵向位置。 如果估计的纵向位置在带的端部的预定距离之内，则伺服控制器操作驱动器以使带远离感测的端部移动。 伺服控制器感测家用横向位置传感器以确定复合致动器是否在磁带的边缘的预定距离内。 如果是这样，它操作复合致动器的粗略的致动器部分横向移动离开磁带的边缘; 否则，走向边缘。 伺服控制器检测双伺服传感器来检测任何两个定义的伺服带; 并且在感测到所定义的伺服带中的任何两个时，检测纵向偏移以识别已经检测出两个所定义的伺服带中的哪一个。
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公开(公告)号：US06278571B1
公开(公告)日：2001-08-21
申请号：US09314078
申请日：1999-05-19
IPC分类号： G11B5584
CPC分类号： G11B21/103 , G11B5/00878 , G11B5/584 , G11B27/13 , G11B2220/93
摘要： Disclosed are a method and a detector for adaptively detecting servo gaps in a timing based servo pattern prerecorded on a variable velocity media. The timing based servo pattern has groups of repeated pairs of non-parallel transition stripes arranged in bursts, the bursts separated by servo gaps whose length is variable. A servo system sensor senses the transition stripes in the longitudinal direction of the media. A group interval detector coupled to the sensor detects the timing interval between the same slope transition stripes of two sequential groups of bursts. A divider divides the detected group timing interval by a predetermined divisor to provide a divided timing interval gap detection threshold. A sequential stripe interval detector coupled to the sensor measures the timing interval between stripes, and a comparator compares the divided timing interval and the timing interval, identifying a servo gap upon the measured timing interval at least equaling the gap threshold. The detector responds to “valid” signals which indicate the validity of the detected group timing interval, repeating operation of the divider to update the gap threshold, and repeating operation of the comparator with the updated gap threshold to continue to identify the servo gaps.
摘要翻译： 公开了一种用于在预先记录在可变速度介质上的基于定时的伺服模式中自适应地检测伺服间隙的方法和检测器。 基于定时的伺服模式具有以突发方式排列的重复的非平行过渡条带对，这些脉冲串由长度可变的伺服间隙分开。 伺服系统传感器感测介质沿纵向的过渡条纹。 耦合到传感器的组间隔检测器检测两个连续的突发组的相同斜率跃迁条之间的定时间隔。 分频器将检测到的组定时间隔除以预定的除数以提供划分的定时间隔间隙检测阈值。 耦合到传感器的顺序条带间隔检测器测量条纹之间的定时间隔，并且比较器比较划分的定时间隔和定时间隔，在测量的定时间隔上识别至少等于间隙阈值的伺服间隙。 检测器响应指示检测到的组定时间隔的有效性的“有效”信号，重复分频器的操作以更新间隙阈值，并且以更新的间隙阈值重复操作比较器以继续识别伺服间隙。
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57.发明授权Method and apparatus to position a head module comprising servo elements and a plurality of data elements 有权用于定位包括伺服元件和多个数据元素的头模块的方法和装置公开(公告)号：US08169736B2
公开(公告)日：2012-05-01
申请号：US12505435
申请日：2009-07-17
CPC分类号： G11B5/5552
摘要： A method to position a head module, where the head module comprises at least one servo element and a plurality of data elements, where the servo element and each of the plurality of data elements can detect a servo signal, wherein the method includes moving a sequential information storage medium having a servo band encoded therein across the head module and detecting the servo band using the at least one servo element or any one of the plurality of data elements.
摘要翻译： 一种定位头模块的方法，其中头模块包括至少一个伺服元件和多个数据元件，其中伺服元件和多个数据元素中的每一个可以检测伺服信号，其中该方法包括移动顺序 信息存储介质，其中跨越所述头模块编码了伺服频带，并且使用所述至少一个伺服单元或所述多个数据单元中的任何一个来检测所述伺服频带。
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公开(公告)号：US20090190250A1
公开(公告)日：2009-07-30
申请号：US12020961
申请日：2008-01-28
IPC分类号： G11B5/584
CPC分类号： G11B5/584 , G11B5/00813
摘要： A tape drive system which includes the ability to reliably reproduce LPOS information even if both of the servo channels of the tape drive system could not detect the LPOS information due to defects. The system recognizes that an LPOS sequence is sequentially incremented by one if a tape is moving in a forward direction and decremented by one if the tape is moving in a backward direction. This sequential property of the LPOS information lends itself to LPOS prediction, where the LPOS prediction is the previous LPOS value plus one if the tape is moving forward and the previous LPOS value minus one if the tape is moving backward. Even if the LPOS words from the two servo channels are both bad, but not all of the bits in the LPOS word are bad. The system uses the remaining good bits from the two servo channels to verify all of the bits of the LPOS prediction word.
摘要翻译： 即使磁带驱动系统的两个伺服通道都由于缺陷而无法检测到LPOS信息，也能够可靠地再现LPOS信息的磁带驱动系统。 如果磁带正向移动，则系统识别LPOS序列依次增加1，如果磁带沿向后方向移动，则LPOS序列递减1。 LPOS信息的这种顺序属性适用于LPOS预测，其中LPOS预测是先前的LPOS值，如果磁带正向前移动，则前一LPOS值减去1，如果磁带向后移动，则前一LPOS值减1。 即使来自两个伺服通道的LPOS字都是坏的，但LPOS字中的所有位都不好。 该系统使用来自两个伺服通道的剩余良好位来验证LPOS预测字的所有位。
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公开(公告)号：US07364106B2
公开(公告)日：2008-04-29
申请号：US11674615
申请日：2007-02-13
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。
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60.发明申请APPARATUS, SYSTEM, AND METHOD FOR DETECTING A PERIODIC SEQUENCE OF SERVO SIGNALS 有权用于检测伺服信号周期性序列的装置，系统和方法公开(公告)号：US20080055759A1
公开(公告)日：2008-03-06
申请号：US11469133
申请日：2006-08-31
申请人： Nhan Xuan Bui , Roy Daron Cideciyan , Robert Allen Hutchins , Thomas Mittelholzer , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Roy Daron Cideciyan , Robert Allen Hutchins , Thomas Mittelholzer , Kazuhiro Tsuruta
IPC分类号： G11B5/09
CPC分类号： G11B20/1407 , G11B5/584 , G11B20/1492 , G11B2020/1284 , G11B2020/1484 , G11B2220/90
摘要： An apparatus, system, and method are disclosed for detecting a periodic sequence. A value detector module detects a plurality of values of a periodic sequence. In one embodiment, a transformation module transforms the plurality of values into transformed values. A confinement module confines the values to a limited set of confined values. A correlation module correlates the confined values with a plurality of instances of the periodic sequence. In addition, a selection module selects an instance of the periodic sequence with the highest correlation to the confined values as an observed periodic sequence.
摘要翻译： 公开了用于检测周期性序列的装置，系统和方法。 值检测器模块检测周期性序列的多个值。 在一个实施例中，变换模块将多个值转换为变换值。 限制模块将值限制为有限的一组限制值。 相关模块将约束值与周期性序列的多个实例相关联。 此外，选择模块选择具有与限定值的最高相关性的周期性序列的实例作为观察到的周期性序列。
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