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31. 发明申请

US20090097603A1 COMMON STATE-SPACE MULTI-CHANNEL DIGITAL SAMPLE TIMING PHASE CONTROL OF MULTIPLE READ CHANNELS FOR CORRELATED SIGNALS 失效
标题翻译：通用状态空间多通道数字样本时序相位控制多个读取通道的相关信号
公开(公告)号：US20090097603A1
公开(公告)日：2009-04-16
申请号：US11870765
申请日：2007-10-11
申请人： Robert Allen Hutchins , Jens Jelitto , Sedat Oelcer
发明人： Robert Allen Hutchins , Jens Jelitto , Sedat Oelcer
IPC分类号： H04L7/00
CPC分类号： H03L7/0994 , G11B20/10037 , G11B20/1403 , G11B20/20 , H03L7/07 , H03L7/093
摘要： Common sample timing control for sample timing of multiple read channels, wherein the signal clocking of the signals received by the multiple read channels are correlated, for example from parallel tracks of magnetic tape that have been written simultaneously. In one embodiment, a common sample timing control comprises multiple phase error inputs, each indicating phase error of one of the read channels. Logic responsive to the multiple phase error inputs is configured to weight and crosscouple the phase error indication of each phase error input with the phase error indication of each other phase error input, and to apply gain related to the variance of noise of the phase error indications. Feedback logic is responsive to the crosscoupling and is configured to provide a sample timing phase estimate for each read channel.
摘要翻译：用于多个读取通道的采样定时的公共采样定时控制，其中由多个读取通道接收的信号的信号时钟与例如已经被同时写入的磁带的平行磁道相关。在一个实施例中，公共采样定时控制包括多个相位误差输入，每个相位误差输入指示一个读取通道的相位误差。响应于多个相位误差输入的逻辑被配置为对每个相位误差输入的相位误差指示进行加权和交叉耦合，并且将每个相位误差输入的相位误差指示与相位误差指示的噪声方差相关联。反馈逻辑响应于交叉耦合，并且被配置为为每个读取通道提供采样定时相位估计。

32. 发明申请

US20080297937A1 USING A MEASURED ERROR TO DETERMINE COEFFICIENTS TO PROVIDE TO AN EQUALIZER TO USE TO EQUALIZE AN INPUT SIGNAL 失效
标题翻译：使用测量错误确定系数以提供均衡器以均衡输入信号
公开(公告)号：US20080297937A1
公开(公告)日：2008-12-04
申请号：US12189096
申请日：2008-08-08
申请人： Evangelos S. Eleftheriou , Robert Allen Hutchins , Jens Jelitto , Sedat Oelcer
发明人： Evangelos S. Eleftheriou , Robert Allen Hutchins , Jens Jelitto , Sedat Oelcer
IPC分类号： G11B5/35
CPC分类号： G11B5/09 , G11B5/00817 , G11B20/10009 , G11B20/10046
摘要： Provided are a read channel, storage drive and method using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal. A read channel is incorporated in a storage device to process signals read from a storage medium. An equalizer uses coefficients to equalize input read signals to produce equalizer output signals. A detector processes adjusted equalizer output signals to determine output values comprising data represented by the input read signals. An equalizer adaptor is enabled to provide a reference measured error and coefficients used to produce the adjusted equalizer signals that are associated with the reference measured error. The equalizer adaptor computes new equalizer coefficients to use to equalize input read signals that result in a new measured error from the detector and computes a new measured error for the new equalizer coefficients. The equalizer adaptor determines whether the new measured error is degraded with respect to the reference measured error and saves the new equalizer coefficients and the new measured error in response to determining that the new measured error is not degraded with respect to the reference measured error. The equalizer adaptor provides the equalizer coefficients associated with the reference measured error to the equalizer to use to equalize input read signals in response to determining that the new measured error is degraded with respect to the reference measured error.
摘要翻译：提供了读通道，存储驱动器和使用测量误差的方法来确定提供给均衡器的系数以用于均衡输入信号。读取通道并入存储装置中以处理从存储介质读取的信号。均衡器使用系数来均衡输入读取信号以产生均衡器输出信号。检测器处理经调整的均衡器输出信号以确定包括由输入读信号表示的数据的输出值。启用均衡器适配器以提供参考测量误差和用于产生与参考测量误差相关联的经调整的均衡器信号的系数。均衡器适配器计算新的均衡器系数以用于均衡来自检测器的导致新的测量误差的输入读取信号，并且计算新的均衡器系数的新的测量误差。均衡器适配器确定新的测量误差是否相对于参考测量误差降级，并且响应于确定新的测量误差相对于参考测量误差而不降级而保存新的均衡器系数和新的测量误差。均衡器适配器将与参考测量误差相关联的均衡器系数提供给均衡器以用于响应于确定新的测量误差相对于参考测量误差而降级来均衡输入读取信号。

33. 发明授权

US07436615B2 Using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal 失效
标题翻译：使用测量误差来确定提供给均衡器的系数以用于均衡输入信号
公开(公告)号：US07436615B2
公开(公告)日：2008-10-14
申请号：US11298386
申请日：2005-12-08
申请人： Evangelos S. Eleftheriou , Robert Allen Hutchins , Jens Jelitto , Sedat Oelcer
发明人： Evangelos S. Eleftheriou , Robert Allen Hutchins , Jens Jelitto , Sedat Oelcer
IPC分类号： G11B5/35
CPC分类号： G11B5/09 , G11B5/00817 , G11B20/10009 , G11B20/10046
摘要： Provided are a read channel, storage drive and method using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal. A read channel is incorporated in a storage device to process signals read from a storage medium. An equalizer uses coefficients to equalize input read signals to produce equalizer output signals. A detector processes adjusted equalizer output signals to determine output values comprising data represented by the input read signals. An equalizer adaptor is enabled to provide a reference measured error and coefficients used to produce the adjusted equalizer signals that are associated with the reference measured error. The equalizer adaptor computes new equalizer coefficients to use to equalize input read signals that result in a new measured error from the detector and computes a new measured error for the new equalizer coefficients. The equalizer adaptor determines whether the new measured error is degraded with respect to the reference measured error and saves the new equalizer coefficients and the new measured error in response to determining that the new measured error is not degraded with respect to the reference measured error. The equalizer adaptor provides the equalizer coefficients associated with the reference measured error to the equalizer to use to equalize input read signals in response to determining that the new measured error is degraded with respect to the reference measured error.
摘要翻译：提供了读通道，存储驱动器和使用测量误差的方法来确定提供给均衡器的系数以用于均衡输入信号。读取通道并入存储装置中以处理从存储介质读取的信号。均衡器使用系数来均衡输入读取信号以产生均衡器输出信号。检测器处理经调整的均衡器输出信号以确定包括由输入读信号表示的数据的输出值。启用均衡器适配器以提供参考测量误差和用于产生与参考测量误差相关联的经调整的均衡器信号的系数。均衡器适配器计算新的均衡器系数以用于均衡来自检测器的导致新的测量误差的输入读取信号，并且计算新的均衡器系数的新的测量误差。均衡器适配器确定新的测量误差是否相对于参考测量误差降级，并且响应于确定新的测量误差相对于参考测量误差而不降级而保存新的均衡器系数和新的测量误差。均衡器适配器将与参考测量误差相关联的均衡器系数提供给均衡器以用于响应于确定新的测量误差相对于参考测量误差而降级来均衡输入读取信号。

34. 发明授权

US08130021B2 Gain control with multiple integrators 有权
标题翻译：增益控制与多个积分器
公开(公告)号：US08130021B2
公开(公告)日：2012-03-06
申请号：US12351403
申请日：2009-01-09
申请人： Jacob Lee Dahle , Robert Allen Hutchins , Sedat Oelcer , Larry LeeRoy Tretter
发明人： Jacob Lee Dahle , Robert Allen Hutchins , Sedat Oelcer , Larry LeeRoy Tretter
IPC分类号： H03K5/00
CPC分类号： G11B20/10009 , G11B5/09 , G11B20/10027 , G11B20/10037 , G11B20/10046 , G11B20/10055 , G11B20/10074 , G11B20/10175 , G11B20/10212 , G11B20/10425 , G11B2220/90
摘要： A system according to one embodiment includes an analog input for receiving an analog signal; a variable gain amplifier coupled to the analog input; a first integrator coupled to the variable gain amplifier for controlling the gain of the analog signal; a second integrator generating control signals for controlling functions of the first integrator; a serializer for serializing the control signals; and a deserializer coupled to the serializer for deserializing the control signals and passing the deserialized control signals to the first integrator.
摘要翻译：根据一个实施例的系统包括用于接收模拟信号的模拟输入; 耦合到模拟输入的可变增益放大器; 耦合到可变增益放大器的第一积分器，用于控制模拟信号的增益; 产生用于控制第一积分器的功能的控制信号的第二积分器; 用于串行化控制信号的串行器; 以及耦合到串行器的解串器，用于反序列化控制信号并将反序列化的控制信号传递给第一积分器。

35. 发明授权

US07885030B2 Methods and systems for delay compensation in global PLL-based timing recovery loops 有权
标题翻译：全球基于PLL的定时恢复循环中延迟补偿的方法和系统
公开(公告)号：US07885030B2
公开(公告)日：2011-02-08
申请号：US12168723
申请日：2008-07-07
申请人： Evangelos S. Eleftheriou , Robert Allen Hutchins , Sedat Oelcer
发明人： Evangelos S. Eleftheriou , Robert Allen Hutchins , Sedat Oelcer
IPC分类号： G11B5/035
CPC分类号： H03L7/07 , G11B20/10009 , G11B20/10222 , G11B20/10425 , G11B20/1403 , G11B2220/90 , H03L7/085 , H03L7/22
摘要： A system in one embodiment includes a global PLL circuit comprising multiple inputs, each input being for receiving an error signal associated with an individual channel; and a delay compensation circuit coupled to the global PLL circuit. A method in one embodiment includes receiving multiple error signals, each error signal being associated with an individual channel; applying one or more delay compensation signals to the error signals; and outputting phase error output signals for each of the channels.
摘要翻译：一个实施例中的系统包括包括多个输入的全局PLL电路，每个输入用于接收与单个信道相关联的错误信号; 以及耦合到全局PLL电路的延迟补偿电路。一个实施例中的方法包括接收多个误差信号，每个误差信号与单个信道相关联; 对误差信号施加一个或多个延迟补偿信号; 并输出每个通道的相位误差输出信号。

36. 发明授权

US07813077B2 Apparatus, system, and method for detecting a periodic sequence of servo signals 有权
标题翻译：用于检测伺服信号的周期性序列的装置，系统和方法
公开(公告)号：US07813077B2
公开(公告)日：2010-10-12
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： G11B5/596
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。

37. 发明申请

US20100177427A1 SYSTEM AND METHOD FOR GENERATING AN AMPLITUDE ERROR SIGNAL IN A MAGNETIC TAPE RECORDING CHANNEL 有权
标题翻译：在磁带记录通道中产生振幅误差信号的系统和方法
公开(公告)号：US20100177427A1
公开(公告)日：2010-07-15
申请号：US12351432
申请日：2009-01-09
申请人： Jacob Lee Dahle , Robert Allen Hutchins , Sedat Oelcer , Larry LeeRoy Tretter
发明人： Jacob Lee Dahle , Robert Allen Hutchins , Sedat Oelcer , Larry LeeRoy Tretter
IPC分类号： G11B5/035 , H04L27/01
CPC分类号： G11B5/035 , G11B20/10009 , G11B20/10027 , G11B2220/90 , H04L25/03248
摘要： A method according to one embodiment includes generating a first gain error, comprising: receiving an output of an equalizer; and comparing a magnitude of the output to a saturation threshold level; if the output is higher than the saturation threshold level, generating a first gain error. The method further including generating at least one of a second and a third gain error, wherein generating the second gain error comprises: using either a slicer or a trellis for generating the second gain error, wherein the slicer generates a gain error based on an output of an interpolator, wherein the trellis generates a gain error based on an output of a maximum likelihood detector; wherein generating the third gain error comprises: receiving an output of an equalizer; generating a threshold qualified peak from the equalizer output and a tracking threshold level; comparing the threshold qualified peak to a second threshold; and generating a third gain error based on the comparison.
摘要翻译：根据一个实施例的方法包括产生第一增益误差，包括：接收均衡器的输出; 以及将所述输出的幅度与饱和阈值电平进行比较; 如果输出高于饱和阈值电平，则产生第一增益误差。该方法还包括产生第二和第三增益误差中的至少一个，其中产生第二增益误差包括：使用限幅器或网格来产生第二增益误差，其中限幅器基于输出产生增益误差其中所述网格基于最大似然检测器的输出产生增益误差; 其中产生所述第三增益误差包括：接收均衡器的输出; 从均衡器输出产生阈值合格峰值和跟踪阈值电平; 将阈值合格峰值与第二阈值进行比较; 以及基于所述比较产生第三增益误差。

38. 发明授权

US07522680B2 Apparatus, system, and method for asymmetric maximum likelihood detection 失效
标题翻译：非对称最大似然检测的装置，系统和方法
公开(公告)号：US07522680B2
公开(公告)日：2009-04-21
申请号：US11054060
申请日：2005-02-09
申请人： David Berman , Evangelos S. Eleftherion , Robert Allen Hutchins , Glen Alan Jaquette , Constantin M. Melas , Sedat Oelcer
发明人： David Berman , Evangelos S. Eleftherion , Robert Allen Hutchins , Glen Alan Jaquette , Constantin M. Melas , Sedat Oelcer
IPC分类号： H04L27/06
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10296 , G11B2220/2516
摘要： An apparatus, system, and method are disclosed for asymmetric maximum likelihood detection. An initialization module initializes a plurality of branch metrics and a plurality of path memories. A coefficient module calculates a plurality of coefficients. A computation module calculates a first and second specified likelihood function. A selection module calculates a third specified branch metric as the maximum of the first and second specified likelihood functions. A path metrics module calculates a third specified path memory from a first and second specified path memory. A results module identifies a data output value from one or more path memories.
摘要翻译：公开了用于非对称最大似然检测的装置，系统和方法。初始化模块初始化多个分支度量和多个路径存储器。系数模块计算多个系数。计算模块计算第一和第二特定似然函数。选择模块计算第三指定分支量度作为第一和第二指定似然函数的最大值。路径度量模块从第一和第二指定路径存储器计算第三指定路径存储器。结果模块识别来自一个或多个路径存储器的数据输出值。

39. 发明授权

US07436609B2 Apparatus method and system for concurrent gain control in a magnetic read channel 失效
标题翻译：磁读取通道中并发增益控制的装置方法和系统
公开(公告)号：US07436609B2
公开(公告)日：2008-10-14
申请号：US11014475
申请日：2004-12-15
申请人： Robert Allen Hutchins
发明人： Robert Allen Hutchins
IPC分类号： G11B5/09
CPC分类号： G11B20/10009 , G11B2020/1275 , G11B2020/1292
摘要： An apparatus, system, and method are disclosed for controlling gain in a magnetic media read channel. In one embodiment, a sampling module provides an asynchronous digital stream corresponding to encoded signals on a streaming magnetic medium, a stream synchronization module converts the asynchronous digital stream to a synchronous digital stream, and a gain control module processes the asynchronous digital stream and provides a gain control signal concurrent to synchronization of the asynchronous digital stream. The described apparatus, method, and system enables calibration of a read channel using a calibration signal (such as a VFO waveform) of shorter duration than attainable with currently available calibration means and methods.
摘要翻译：公开了一种用于控制磁介质读取通道中的增益的装置，系统和方法。在一个实施例中，采样模块提供与流式磁介质上的编码信号相对应的异步数字流，流同步模块将异步数字流转换为同步数字流，增益控制模块处理异步数字流并提供增益控制信号与异步数字流的同步并发。所描述的装置，方法和系统使得能够使用比当前可用的校准装置和方法可获得的持续时间更短的校准信号（例如VFO波形）来校准读取通道。

40. 发明授权

US06525898B1 Detection of indexed servo positions displaced from servo track edges 失效
标题翻译：检测从伺服磁道边缘移位的索引伺服位置
公开(公告)号：US06525898B1
公开(公告)日：2003-02-25
申请号：US09413327
申请日：1999-10-07
申请人： Alex Chliwnyj , John James Gniewek , Robert Allen Hutchins , Steven Carter Wills
发明人： Alex Chliwnyj , John James Gniewek , Robert Allen Hutchins , Steven Carter Wills
IPC分类号： G11B5584
CPC分类号： G11B5/584 , G11B20/10
摘要： A servo position detector and a method for detecting and following an index position displaced at an offset with respect to an edge of a servo track, an edge comprising an interface between two dissimilar recorded servo signals. The servo track has two edges on opposite lateral sides of a middle recorded servo signal, the edges separated by a predetermined distance. A servo read element has an active sensing region which is no more than and is substantially the entire predetermined distance separating the edges, thereby.sensing no more than two of the dissimilar recorded servo signals at one of the edges. An independent position sensor senses the coarse position of the servo read element, indicating which edge or which index position is aligned with the servo read element. Logic compares the two sensed servo signals to determine the ratio therebetween, and determines an error between the compared ratio and a predetermined ratio. The predetermined ratio is an offset from a centered on-edge ratio, and identifies the index position. The logic provides the servo position error with respect to the index position. A servo positioner moves the servo read element to reduce the servo position error.
摘要翻译：一种伺服位置检测器和一种用于检测和跟随相对于伺服轨道的边缘偏移的指示位置的边缘，边缘包括两个不同的记录的伺服信号之间的接口。伺服轨道在中间记录的伺服信号的相对侧面具有两个边缘，边缘分开预定距离。伺服读取元件具有不超过并且基本上分开边缘的整个预定距离的有源感测区域，从而在一个边缘处不超过两个不同的记录伺服信号。独立的位置传感器感测伺服读取元件的粗略位置，指示哪个边缘或哪个索引位置与伺服读取元件对准。逻辑比较两个检测到的伺服信号以确定它们之间的比例，并且确定比较率和预定比率之间的误差。预定比率是与中心边缘比率的偏移，并且识别索引位置。该逻辑提供了相对于索引位置的伺服位置误差。伺服定位器移动伺服读取元件以减少伺服位置误差。

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