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1. 发明申请

US20060039457A1 System and method for controlling line driver power in digital subscriber line modems 有权
公开(公告)号：US20060039457A1
公开(公告)日：2006-02-23
申请号：US11237001
申请日：2005-09-28
申请人： Gordon Davis , Jeffrey Derby , Evangelos Eleftheriou , Sedat Oelcer , Malcolm Ware
发明人： Gordon Davis , Jeffrey Derby , Evangelos Eleftheriou , Sedat Oelcer , Malcolm Ware
IPC分类号： H04B1/38
CPC分类号： H04L25/028 , H04L27/2626 , H04M11/062 , Y02D50/44
摘要： A low power DSL modem transmitter, suitable for incorporation in integrated DSLAM server line cards, transmits full power physical frames which include a control channel and a data field when data is available for transmission and physical frames having only a control channel or a control channel and a low power synchronization field when data is not available for transmission. And a method for controlling the total power dissipated in the integrated DSLAM by selectively restricting the flow of data packets to the DSLs.

2. 发明申请

US20080069194A1 SYSTEM AND METHOD FOR CONTROLLING LINE DRIVER POWER IN DIGITAL SUBSCRIBER LINE MODEMS 有权
标题翻译：用于控制数字用户线路模式的线路驱动器功率的系统和方法
公开(公告)号：US20080069194A1
公开(公告)日：2008-03-20
申请号：US11945213
申请日：2007-11-26
申请人： Gordon DAVIS , Jeffrey Derby , Evangelos Eleftheriou , Sedat Oelcer , Malcolm Ware
发明人： Gordon DAVIS , Jeffrey Derby , Evangelos Eleftheriou , Sedat Oelcer , Malcolm Ware
IPC分类号： H04B1/38
CPC分类号： H04L25/028 , H04L27/2626 , H04M11/062 , Y02D50/44
摘要： A method for operating plurality of DSL modem transmitters integrated within a circuit card. The method includes each DSL modem transmitter: generating a full power physical frame when the DSL modem transmitter is provided with data to transmit; generating a low power physical frame having a control channel signal component and no data; and selecting between the full power physical frame and the low power physical frame for transmission from the DSL modem transmitter, wherein selection of the low power physical frame for transmission from the DSL modem transmitter is based only on the DSL modem transmitter having no data to transmit. The method further includes limiting aggregate flow of data to the plurality of DSL modem transmitters such that a total power required by the plurality of DSL modem transmitters is held below a predefined target power level.
摘要翻译：一种用于操作集成在电路卡内的多个DSL调制解调器发射机的方法。该方法包括每个DSL调制解调器发射机：当DSL调制解调器发射机被提供有要传输的数据时，产生全功率物理帧; 生成具有控制信道信号分量且不存在数据的低功率物理帧; 并且在全功率物理帧和低功率物理帧之间选择用于从DSL调制解调器发射机发射，其中，用于从DSL调制解调器发射机传输的低功率物理帧的选择仅基于没有数据传输的DSL调制解调器发射机。该方法还包括限制数据到多个DSL调制解调器发射机的汇总流量，使得多个DSL调制解调器发射机所需的总功率保持在预定义的目标功率电平以下。

3. 发明申请

US20070177292A1 Using at least one servo channel to provide timing recovery and timing information to data channels 失效
标题翻译：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：US20070177292A1
公开(公告)日：2007-08-02
申请号：US11346391
申请日：2006-02-01
申请人： Nhan Bui , Giovanni Cherubini , Evangelos Eleftheriou , Robert Hutchins , Glen Jaquette , Jens Jelitto , Sedat Oelcer , Mark Taylor
发明人： Nhan Bui , Giovanni Cherubini , Evangelos Eleftheriou , Robert Hutchins , Glen Jaquette , Jens Jelitto , Sedat Oelcer , Mark 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。

4. 发明申请

US20070076313A1 Dynamic method for asymmetry compensation in a storage read channel 有权
标题翻译：存储读通道中不对称补偿的动态方法
公开(公告)号：US20070076313A1
公开(公告)日：2007-04-05
申请号：US11242343
申请日：2005-10-03
申请人： Robert Hutchins , Evangelos Eleftheriou , Sedat Oelcer
发明人： Robert Hutchins , Evangelos Eleftheriou , Sedat Oelcer
IPC分类号： G11B5/09
CPC分类号： G11B5/09 , G11B2005/0013
摘要： Provided is a dynamic method for asymmetry compensation in a storage read channel. An asymmetry cancellation component in communication with an analog-to-digital converter receives an analog signal representing data read from a storage medium by a read head. The asymmetry cancellation component receives a digital signal from the analog-to-digital converter representing data read from the storage medium and computes an error signal indicating an asymmetry in the digital signal. The computed error signal is used to determine a coefficient. The digital signal is adjusted using the coefficient to produce a corrected digital signal.
摘要翻译：提供了一种用于存储读取通道中的不对称补偿的动态方法。与模数转换器通信的不对称消除部件接收表示由读取头从存储介质读取的数据的模拟信号。不对称消除部件从模数转换器接收表示从存储介质读取的数据的数字信号，并计算指示数字信号不对称的误差信号。计算出的误差信号用于确定系数。使用系数调整数字信号以产生校正的数字信号。

5. 发明申请

US20060119964A1 Magnetic tape read channel signal values developed employing intermediate bits of the path memory of a PRML viterbi detector 失效
标题翻译：使用PRML维特比检测器的路径存储器的中间位开发的磁带读取通道信号值
公开(公告)号：US20060119964A1
公开(公告)日：2006-06-08
申请号：US11003316
申请日：2004-12-03
申请人： Evangelos Eleftheriou , Robert Hutchins , Glen Jaquette , Sedat Oelcer
发明人： Evangelos Eleftheriou , Robert Hutchins , Glen Jaquette , Sedat Oelcer
IPC分类号： G11B5/09 , G11B20/10
CPC分类号： G11B20/10009 , G11B20/10037 , G11B20/10055 , G11B20/10074 , G11B20/10296 , G11B2220/90
摘要： Magnetic tape read channel signal values are developed employing intermediate bits of the path memory of a PRML Viterbi detector. Identification logic identifies a most likely path memory state of the PRML Viterbi detector from the path metrics of the PRML Viterbi detector. An intermediate bit sequence of the identified most likely path memory state is obtained, the intermediate bit sequence extending from an initiation point of the path memory which is intermediate the output and the input of the PRML Viterbi detector. A sample value is determined which corresponds to the obtained intermediate bit sequence.
摘要翻译：使用PRML维特比检测器的路径存储器的中间位来开发磁带读取通道信号值。识别逻辑根据PRML维特比检测器的路径度量来识别PRML维特比检测器的最可能的路径存储状态。获得所识别的最可能的路径存储器状态的中间比特序列，从位于PRML维特比检测器的输出和输入之间的路径存储器的起始点延伸的中间比特序列。确定对应于获得的中间位序列的采样值。

6. 发明申请

US20070206310A1 DYNAMICALLY ADAPTING A MAGNETIC TAPE READ CHANNEL EQUALIZER 失效
标题翻译：动态调整磁带读取通道均衡器
公开(公告)号：US20070206310A1
公开(公告)日：2007-09-06
申请号：US11733934
申请日：2007-04-11
申请人： ROBERT HUTCHINS , Glen Jaquette , Evangelos Eleftheriou , Sedat Oelcer
发明人： ROBERT HUTCHINS , Glen Jaquette , Evangelos Eleftheriou , Sedat Oelcer
IPC分类号： G11B5/035
CPC分类号： G11B20/10 , G11B5/02
摘要： A read channel equalizer of a magnetic tape drive which equalized digitally sampled magnetic signals detected by a read head is dynamically adapted. A detector of equalizer dynamic adaptation logic compares equalizer output signals to desired values that are based on the decoding scheme (such as +2, 0 and −2 for PR4) to sense equalizer output signals that are offset from at least one desired value, and signals the fact of each offset and it polarity as amplitude independent error signals. The signaled sensed amplitude independent error signals are fed back to adjustable taps of the equalizer. The simplified error signals thus avoid complex calculations of waveform errors, such as least mean square calculations. The error signals may be weighted and may be adjusted to align synchronously provided error signals with asynchronous taps of the equalizer.
摘要翻译：驱动磁头驱动器的读取通道均衡器，其均衡由读取头检测到的数字采样的磁信号。均衡器动态适配逻辑的检测器将均衡器输出信号与基于解码方案（例如PR4的+2,0和-2）的期望值进行比较，以感测与至少一个期望值偏移的均衡器输出信号，以及将每个偏移的事实表示为与振幅无关的误差信号。信号感知的与振幅无关的误差信号反馈到均衡器的可调节抽头。因此，简化的误差信号避免了波形误差的复杂计算，例如最小均方根计算。误差信号可以被加权并且可以被调整以使同步提供的误差信号与均衡器的异步抽头对齐。

7. 发明申请

US20070098061A1 Apparatus, system, and method for adaptive asynchronous equalization using leakage 有权
标题翻译：使用泄漏进行自适应异步均衡的装置，系统和方法
公开(公告)号：US20070098061A1
公开(公告)日：2007-05-03
申请号：US11263189
申请日：2005-10-31
申请人： Evangelos Eleftheriou , Robert Hutchins , Jens Jelitto , Sedat Oelcer
发明人： Evangelos Eleftheriou , Robert Hutchins , Jens Jelitto , Sedat Oelcer
IPC分类号： H03H7/40 , G06F17/10
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10175 , G11B20/10481 , H04L25/03019 , H04L2025/03484 , H04L2025/03681
摘要： An apparatus, system, and method are disclosed for adaptive asynchronous equalization using leakage. An equalizer sums products of a plurality of tap signals from a delay line sampling a read signal and a plurality of corresponding tap coefficients to form an equalized signal in an asynchronous time domain having a first sampling rate. A leaky function module calculates a leaky function for each tap coefficient in the asynchronous time domain. An adaptation module adapts each of the tap coefficients as the leaky function for each tap coefficient summed with a signal-dependent updating function for each tap coefficient.
摘要翻译：公开了一种使用泄漏进行自适应异步均衡的装置，系统和方法。均衡器对来自对读取信号进行采样的延迟线和多个对应抽头系数的多个抽头信号的乘积相加，以在具有第一采样率的异步时域中形成均衡信号。泄漏功能模块计算异步时域中每个抽头系数的泄漏函数。适配模块将每个抽头系数适配为每个抽头系数的泄漏函数，用于针对每个抽头系数的与信号相关的更新函数相加。

8. 发明申请

US20070047127A1 Dynamically adapting a read channel equalizer 失效
标题翻译：动态调整读通道均衡器
公开(公告)号：US20070047127A1
公开(公告)日：2007-03-01
申请号：US11215409
申请日：2005-08-30
申请人： Robert Hutchins , Sedat Oelcer , Jens Jelitto , Evangelos Eleftheriou
发明人： Robert Hutchins , Sedat Oelcer , Jens Jelitto , Evangelos Eleftheriou
IPC分类号： G11B5/035
CPC分类号： G11B5/035 , G11B20/10046 , G11B20/10212 , G11B20/1201
摘要： Provided is a read channel incorporated in a storage device to process signals read from a storage medium. The read channel includes an equalizer equalizing input read signals to produce equalizer output signals. A detector senses an adjusted equalizer output signal to determine an output value comprising data represented by the input read signals. An equalizer adaptor receives the output value from the detector to determine a first error signal used to adjust the equalizer operations. A component adjusts the equalizer output signals being transmitted to the detector, wherein the component is adjusted by a second error signal calculated from the output value from the detector, wherein the first and second error signals are different.
摘要翻译：提供了一种结合在存储装置中以读取从存储介质读取的信号的读通道。读通道包括均衡器均衡输入读信号以产生均衡器输出信号。检测器感测调整的均衡器输出信号以确定包括由输入读取信号表示的数据的输出值。均衡器适配器从检测器接收输出值以确定用于调整均衡器操作的第一误差信号。一个分量调整正被发送到检测器的均衡器输出信号，其中通过从检测器的输出值计算的第二误差信号调整分量，其中第一和第二误差信号是不同的。

9. 发明申请

US20060250719A1 Method for a cyclic dibit response estimation in a media system using a data set separator sequence 失效
标题翻译：在使用数据集分隔符序列的媒体系统中进行循环双位响应估计的方法
公开(公告)号：US20060250719A1
公开(公告)日：2006-11-09
申请号：US11122680
申请日：2005-05-05
申请人： Robert Hutchins , Evangelos Eleftheriou , Sedat Oelcer
发明人： Robert Hutchins , Evangelos Eleftheriou , Sedat Oelcer
IPC分类号： G11B5/09
CPC分类号： G11B20/10 , G11B20/10009 , G11B20/10046
摘要： A dibit response estimation generator receives a DSS sequence and a DSS readback sequence, which is a function of a channel processing of the DSS sequence by a read channel. The generator generates a cyclic dibit response vector as a function of the DSS sequence and the DSS readback sequence. The generator further generates an error signal as a function of a comparison of the DSS readback sequence and a filtering of the DSS sequence based on the cyclic dibit response vector. An unacceptable error signal indicates a need to adjust the cyclic dibit response vector to yield an acceptable comparison of the DSS readback sequence and the filtering of the DSS sequence based on the cyclic dibit response vector.
摘要翻译：双向响应估计生成器接收DSS序列和DSS回读序列，DSS序列是通过读取通道的DSS序列的信道处理的函数。发生器产生作为DSS序列和DSS回读序列的函数的循环双位响应向量。发生器还根据DSS回读序列的比较和基于循环双位响应向量的DSS序列的滤波产生误差信号。不可接受的误差信号表示需要调整循环双位响应向量，以产生DSS回读序列的可接受比较和基于循环双位响应向量的DSS序列的过滤。

10. 发明申请

US20060119969A1 Dynamically adapting a magnetic tape read channel equalizer 失效
标题翻译：动态调整磁带读通道均衡器
公开(公告)号：US20060119969A1
公开(公告)日：2006-06-08
申请号：US11003283
申请日：2004-12-03
申请人： Robert Hutchins , Glen Jaquette , Evangelos Eleftheriou , Sedat Oelcer
发明人： Robert Hutchins , Glen Jaquette , Evangelos Eleftheriou , Sedat Oelcer
IPC分类号： G11B5/035 , G11B20/10
CPC分类号： G11B20/10 , G11B5/02
摘要： A read channel equalizer of a magnetic tape drive which equalizes digitally sampled magnetic signals detected by a read head is dynamically adapted. A detector of equalizer dynamic adaptation logic compares equalizer output signals to desired values that are based on the decoding scheme (such as +2, 0 and −2 for PR4) to sense equalizer output signals that are offset from at least one desired value, and signals the fact of each offset and its polarity as amplitude independent error signals. The signaled sensed amplitude independent error signals are fed back to adjustable taps of the equalizer. The simplified error signals thus avoid complex calculations of waveform errors, such as least mean square calculations. The error signals may be weighted and may be adjusted to align synchronously provided error signals with asynchronous taps of the equalizer.
摘要翻译：磁头驱动器的读取通道均衡器，其均衡由读取头检测到的数字采样磁信号。均衡器动态适配逻辑的检测器将均衡器输出信号与基于解码方案（例如PR4的+2,0和-2）的期望值进行比较，以感测与至少一个期望值偏移的均衡器输出信号，以及将每个偏移及其极性的事实表示为与振幅无关的误差信号。信号感知的与振幅无关的误差信号反馈到均衡器的可调节抽头。因此，简化的误差信号避免了波形误差的复杂计算，例如最小均方根计算。误差信号可以被加权并且可以被调整以使同步提供的误差信号与均衡器的异步抽头对齐。

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