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1. 发明授权

US07839599B2 Combining information from parallel servo channels 失效
标题翻译：组合来自并行伺服通道的信息
公开(公告)号：US07839599B2
公开(公告)日：2010-11-23
申请号：US12400420
申请日：2009-03-09
申请人： Nhan X. Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
发明人： Nhan X. Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
IPC分类号： G11B5/584 , G11B21/02
CPC分类号： G11B5/584
摘要： A weighted combining scheme exploits information from two servo channels operating in parallel. A timing-based servo module comprises two synchronous servo channels coupled respectively to receive two digital servo signals read from a data tape. Both channels have outputs for an unweighted parameter estimate and for a measure of the channel reliability. A weight computation module provides first and second weight signals using the measures of channel reliability from the servo channels. An offset computation module provides first and second offset terms which are summed with the unweighted parameter estimates. Multiplying nodes receive the unweighted parameter estimates and the weight signals and outputs offset weighted parameter estimates. A summing node receives the offset weighted parameter estimates and outputs a combined offset weighted parameter estimate to a servomechanism.
摘要翻译：加权组合方案利用来自并行运行的两个伺服通道的信息。基于定时的伺服模块包括分别耦合的两个同步伺服通道，以接收从数据磁带读取的两个数字伺服信号。两个通道具有未加权参数估计的输出和通道可靠性的度量。权重计算模块使用来自伺服信道的信道可靠性的测量来提供第一和第二加权信号。偏移计算模块提供与未加权参数估计相加的第一和第二偏移项。乘法节点接收未加权的参数估计和权重信号并输出偏移加权参数估计。求和节点接收偏移加权参数估计，并将组合的偏移加权参数估计输出到伺服机构。

2. 发明授权

US08023223B2 Combining information from parallel servo channels 失效
标题翻译：组合来自并行伺服通道的信息
公开(公告)号：US08023223B2
公开(公告)日：2011-09-20
申请号：US12878722
申请日：2010-09-09
申请人： Nhan X. Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
发明人： Nhan X. Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
IPC分类号： G11B5/584 , G11B21/02
CPC分类号： G11B5/584
摘要： A weighted combining scheme exploits information from two servo channels operating in parallel. A timing-based servo module comprises two synchronous servo channels coupled respectively to receive two digital servo signals read from a data tape. Both channels have outputs for an unweighted parameter estimate and for a measure of the channel reliability. A weight computation module provides first and second weight signals using the measures of channel reliability from the servo channels. An offset computation module provides first and second offset terms which are summed with the unweighted parameter estimates. Multiplying nodes receive the unweighted parameter estimates and the weight signals and outputs offset weighted parameter estimates. A summing node receives the offset weighted parameter estimates and outputs a combined offset weighted parameter estimate to a servomechanism.
摘要翻译：加权组合方案利用来自并行操作的两个伺服通道的信息。基于定时的伺服模块包括分别耦合的两个同步伺服通道，以接收从数据磁带读取的两个数字伺服信号。两个通道具有未加权参数估计的输出和通道可靠性的度量。权重计算模块使用来自伺服信道的信道可靠性的测量来提供第一和第二加权信号。偏移计算模块提供与未加权参数估计相加的第一和第二偏移项。乘法节点接收未加权的参数估计和权重信号并输出偏移加权参数估计。求和节点接收偏移加权参数估计，并将组合的偏移加权参数估计输出到伺服机构。

3. 发明授权

US08000057B2 Combining information from parallel servo channels 失效
公开(公告)号：US08000057B2
公开(公告)日：2011-08-16
申请号：US12878704
申请日：2010-09-09
申请人： Nhan X. Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
发明人： Nhan X. Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
IPC分类号： G11B5/584 , G11B21/02
CPC分类号： G11B5/584
摘要： A weighted combining scheme exploits information from two servo channels operating in parallel. A timing-based servo module comprises two synchronous servo channels coupled respectively to receive two digital servo signals read from a data tape. Both channels have outputs for an unweighted parameter estimate and for a measure of the channel reliability. A weight computation module provides first and second weight signals using the measures of channel reliability from the servo channels. An offset computation module provides first and second offset terms which are summed with the unweighted parameter estimates. Multiplying nodes receive the unweighted parameter estimates and the weight signals and outputs offset weighted parameter estimates. A summing node receives the offset weighted parameter estimates and outputs a combined offset weighted parameter estimate to a servomechanism.

4. 发明授权

US07982988B2 Combining information from parallel servo channels 失效
标题翻译：组合来自并行伺服通道的信息
公开(公告)号：US07982988B2
公开(公告)日：2011-07-19
申请号：US12400369
申请日：2009-03-09
申请人： Nhan X. Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
发明人： Nhan X. Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
IPC分类号： G11B27/36 , G11B5/584
CPC分类号： G11B5/584
摘要： A weighted combining scheme exploits information from two servo channels operating in parallel. A timing-based servo module servo module comprises two servo channels coupled respectively to receive two digital servo signals read from a data tape. Both channels have outputs for an unweighted metric and for a measure of the channel reliability. A weight computation module provides first and second weight signals using the measures of channel reliability from the servo channels. A first multiplying node receives a first unweighted metric and a first weight signal and is operable to output a first weighted metric. A second multiplying node receives a second unweighted metric and a second weight signal and outputs a second weighted metric. A summing node receives the first and second weighted metrics and outputs a combined weighted metric to an LPOS word decoder.
摘要翻译：加权组合方案利用来自并行操作的两个伺服通道的信息。基于定时的伺服模块伺服模块包括分别耦合的两个伺服通道，以接收从数据磁带读取的两个数字伺服信号。两个通道都具有未加权度量的输出和通道可靠性的度量。权重计算模块使用来自伺服信道的信道可靠性的测量来提供第一和第二加权信号。第一乘法节点接收第一未加权度量和第一加权信号，并且可操作以输出第一加权度量。第二乘法节点接收第二未加权度量和第二加权信号并输出第二加权度量。求和节点接收第一和第二加权度量，并将组合加权度量输出到LPOS字解码器。

5. 发明授权

US08395860B2 Method and apparatus to position a head module comprising servo elements and plurality of data elements 有权
标题翻译：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：US08395860B2
公开(公告)日：2013-03-12
申请号：US13460614
申请日：2012-04-30
申请人： Nhan X. Bui , Giovanni Cherubini , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
发明人： Nhan X. Bui , Giovanni Cherubini , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
IPC分类号： G11B5/584 , G11B21/02 , G11B15/46
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。

6. 发明申请

US20100226037A1 COMBINING INFORMATION FROM PARALLEL SERVO CHANNELS 失效
标题翻译：从并行伺服通道组合信息
公开(公告)号：US20100226037A1
公开(公告)日：2010-09-09
申请号：US12400369
申请日：2009-03-09
申请人： Nhan Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
发明人： Nhan Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
IPC分类号： G11B5/596 , G11B5/584
CPC分类号： G11B5/584
摘要： A weighted combining scheme exploits information from two servo channels operating in parallel. A timing-based servo module servo module comprises two servo channels coupled respectively to receive two digital servo signals read from a data tape. Both channels have outputs for an unweighted metric and for a measure of the channel reliability. A weight computation module provides first and second weight signals using the measures of channel reliability from the servo channels. A first multiplying node receives a first unweighted metric and a first weight signal and is operable to output a first weighted metric. A second multiplying node receives a second unweighted metric and a second weight signal and outputs a second weighted metric. A summing node receives the first and second weighted metrics and outputs a combined weighted metric to an LPOS word decoder.
摘要翻译：加权组合方案利用来自并行操作的两个伺服通道的信息。基于定时的伺服模块伺服模块包括分别耦合的两个伺服通道，以接收从数据磁带读取的两个数字伺服信号。两个通道都具有未加权度量的输出和通道可靠性的度量。权重计算模块使用来自伺服信道的信道可靠性的测量来提供第一和第二加权信号。第一乘法节点接收第一未加权度量和第一加权信号，并且可操作以输出第一加权度量。第二乘法节点接收第二未加权度量和第二加权信号并输出第二加权度量。求和节点接收第一和第二加权度量，并将组合加权度量输出到LPOS字解码器。

7. 发明申请

US20100328803A1 COMBINING INFORMATION FROM PARALLEL SERVO CHANNELS 失效
标题翻译：从并行伺服通道组合信息
公开(公告)号：US20100328803A1
公开(公告)日：2010-12-30
申请号：US12878704
申请日：2010-09-09
申请人： Nhan Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
发明人： Nhan Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
IPC分类号： G11B5/09
CPC分类号： G11B5/584
摘要： A weighted combining scheme exploits information from two servo channels operating in parallel. A timing-based servo module comprises two synchronous servo channels coupled respectively to receive two digital servo signals read from a data tape. Both channels have outputs for an unweighted parameter estimate and for a measure of the channel reliability. A weight computation module provides first and second weight signals using the measures of channel reliability from the servo channels. An offset computation module provides first and second offset terms which are summed with the unweighted parameter estimates. Multiplying nodes receive the unweighted parameter estimates and the weight signals and outputs offset weighted parameter estimates. A summing node receives the offset weighted parameter estimates and outputs a combined offset weighted parameter estimate to a servomechanism.
摘要翻译：加权组合方案利用来自并行操作的两个伺服通道的信息。基于定时的伺服模块包括分别耦合的两个同步伺服通道，以接收从数据磁带读取的两个数字伺服信号。两个通道具有未加权参数估计的输出和通道可靠性的度量。权重计算模块使用来自伺服信道的信道可靠性的测量来提供第一和第二加权信号。偏移计算模块提供与未加权参数估计相加的第一和第二偏移项。乘法节点接收未加权的参数估计和权重信号并输出偏移加权参数估计。求和节点接收偏移加权参数估计，并将组合的偏移加权参数估计输出到伺服机构。

8. 发明申请

US20110007418A1 COMBINING INFORMATION FROM PARALLEL SERVO CHANNELS 失效
标题翻译：从并行伺服通道组合信息
公开(公告)号：US20110007418A1
公开(公告)日：2011-01-13
申请号：US12878722
申请日：2010-09-09
申请人： Nhan Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
发明人： Nhan Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： A weighted combining scheme exploits information from two servo channels operating in parallel. A timing-based servo module comprises two synchronous servo channels coupled respectively to receive two digital servo signals read from a data tape. Both channels have outputs for an unweighted parameter estimate and for a measure of the channel reliability. A weight computation module provides first and second weight signals using the measures of channel reliability from the servo channels. An offset computation module provides first and second offset terms which are summed with the unweighted parameter estimates. Multiplying nodes receive the unweighted parameter estimates and the weight signals and outputs offset weighted parameter estimates. A summing node receives the offset weighted parameter estimates and outputs a combined offset weighted parameter estimate to a servomechanism.
摘要翻译：加权组合方案利用来自并行操作的两个伺服通道的信息。基于定时的伺服模块包括分别耦合的两个同步伺服通道，以接收从数据磁带读取的两个数字伺服信号。两个通道具有未加权参数估计的输出和通道可靠性的度量。权重计算模块使用来自伺服信道的信道可靠性的测量来提供第一和第二加权信号。偏移计算模块提供与未加权参数估计相加的第一和第二偏移项。乘法节点接收未加权的参数估计和权重信号并输出偏移加权参数估计。求和节点接收偏移加权参数估计，并将组合的偏移加权参数估计输出到伺服机构。

9. 发明申请

US20100226039A1 COMBINING INFORMATION FROM PARALLEL SERVO CHANNELS 失效
公开(公告)号：US20100226039A1
公开(公告)日：2010-09-09
申请号：US12400420
申请日：2009-03-09
申请人： Nhan Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
发明人： Nhan Bui , Giovanni Cherubini , Roy D. Cideciyan , Robert A. Hutchins , Jens Jelitto , Kazuhiro Tsuruta
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： A weighted combining scheme exploits information from two servo channels operating in parallel. A timing-based servo module comprises two synchronous servo channels coupled respectively to receive two digital servo signals read from a data tape. Both channels have outputs for an unweighted parameter estimate and for a measure of the channel reliability. A weight computation module provides first and second weight signals using the measures of channel reliability from the servo channels. An offset computation module provides first and second offset terms which are summed with the unweighted parameter estimates. Multiplying nodes receive the unweighted parameter estimates and the weight signals and outputs offset weighted parameter estimates. A summing node receives the offset weighted parameter estimates and outputs a combined offset weighted parameter estimate to a servomechanism.

10. 发明授权

US07957088B1 Track compensation and skew compensation for drives having flangeless rollers and systems thereof 有权
标题翻译：具有无法兰滚子及其系统的驱动器的履带补偿和偏斜补偿
公开(公告)号：US07957088B1
公开(公告)日：2011-06-07
申请号：US12716200
申请日：2010-03-02
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： G11B5/58
CPC分类号： G11B5/584
摘要： According to one embodiment, a system includes a plurality of synchronous servo channels, where each channel receives a signal from a servo reader of a magnetic head. The system also includes logic for estimating a tape velocity, logic for determining a first and second time instant representing a time at which a flag is generated by a related servo channel, logic for determining a first and second correction term representing a time difference between a time at which a peak of a correlation signal and a time at which the flag occur, logic for calculating a skew error estimate based on a reference shift value associated with a servo band pair being spanned by a head module, and logic for applying a control signal including a skew correction that corresponds to the calculated skew error estimate to the skew-following loop. Other systems and methods are disclosed as well.
摘要翻译：根据一个实施例，系统包括多个同步伺服通道，其中每个通道接收来自磁头的伺服读取器的信号。该系统还包括用于估计磁带速度的逻辑，用于确定表示由相关伺服通道产生标志的时间的第一和第二时刻的逻辑，用于确定表示第一和第二校正项的逻辑，相关信号的峰值和标志出现的时间的时间，用于基于与头模块跨越的伺服带对相关联的参考移位值计算偏斜误差估计的逻辑，以及用于施加控制的逻辑信号包括对应于所计算的偏斜误差估计到偏斜跟踪环路的偏斜校正。还公开了其它系统和方法。

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