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1. 发明专利

JP2006221783A Apparatus, system, signal bearing medium, and method for detecting asymmetrical maximum likelihood (apparatus, system, and method for detecting asymmetrical maximum likelihood) 审中-公开
标题翻译：装置，系统，信号轴承介质和用于检测不对称最大似然的方法（装置，系统和用于检测不对称最大像素的方法）
公开(公告)号：JP2006221783A
公开(公告)日：2006-08-24
申请号：JP2006019666
申请日：2006-01-27
申请人： Internatl Business Mach Corp , インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation
发明人： BERMAN DAVID , ELEFTHERIOU EVANGELOS S , HUTCHINS ROBERT ALLEN , JAQUETTE GLEN ALAN , MELAS CONSTANTIN M , OELCER SEDAT
IPC分类号： G11B20/14 , G11B20/10 , G11B20/18 , H03M13/41
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10296 , G11B2220/2516
摘要： PROBLEM TO BE SOLVED: To provide a device, a system, and a method for detecting asymmetrical maximum likelihood.
SOLUTION: In an initialization module, a plurality of branch metrics and a plurality of path memories are initialized. In a coefficient module, a plurality of coefficients are calculated. In the calculation module, a first and second designated likelihood functions are calculated. In a selection module, a third designated branch metric is calculated as the maximum value among the first and the second designated likelihood functions. In the path metric module, the third designated path memory is calculated from a first and second designated path memory. In a result module, a data output value is identified from one or more path memories.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于检测不对称最大似然性的装置，系统和方法。解决方案：在初始化模块中，初始化多个分支度量和多个路径存储器。在系数模块中，计算多个系数。在计算模块中，计算第一和第二指定似然函数。在选择模块中，第三指定分支度量被计算为第一和第二指定似然函数中的最大值。在路径度量模块中，从第一和第二指定路径存储器计算第三指定路径存储器。在结果模块中，从一个或多个路径存储器识别数据输出值。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2012059353A Method of operating synchronous servo channel for tape drive systems 有权
标题翻译：用于磁带驱动系统的同步伺服通道的操作方法
公开(公告)号：JP2012059353A
公开(公告)日：2012-03-22
申请号：JP2011230322
申请日：2011-10-20
申请人： Internatl Business Mach Corp , インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation
发明人： CHERUBINI GIOVANNI , ELEFTHERIOU EVANGELOS S , JEN JERIT , HUTCHINS ROBERT ALLEN
IPC分类号： G11B27/10 , G11B5/584 , G11B27/19
CPC分类号： G11B5/59688
摘要： PROBLEM TO BE SOLVED: To provide a fully synchronous servo channel for a data tape drive.SOLUTION: A fully synchronous servo channel for a data tape drive is provided by including: initial acquisition of synchronous servo channel parameters; generation of a timing basis for signal interpolation; generation of a tape velocity estimate and a y-position estimate; and an optimum detection of longitudinal position (LPOS) symbols.
摘要翻译：要解决的问题：为数据磁带驱动器提供完全同步的伺服通道。解决方案：数据磁带驱动器的完全同步伺服通道包括：初始采集同步伺服通道参数; 生成信号插值的定时基础; 产生磁带速度估计和y位置估计; 以及纵向位置（LPOS）符号的最佳检测。版权所有（C）2012，JPO＆INPIT

3. 发明专利

JP2009095027A Frequency error combination logic configured for multi-channel data detection system, and method for generating frequency error 有权
标题翻译：针对多通道数据检测系统配置的频率错误组合逻辑和产生频率误差的方法
公开(公告)号：JP2009095027A
公开(公告)日：2009-04-30
申请号：JP2008262279
申请日：2008-10-08
申请人： Internatl Business Mach Corp , インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation
发明人： HUTCHINS ROBERT ALLEN , JELITTO JENS , OELCER SEDAT
IPC分类号： H03L7/08 , G11B20/14 , G11B20/18 , H03L7/06
摘要： PROBLEM TO BE SOLVED: To provide frequency error combination logic for a multi-channel data detection system with a phase locked loop for each channel.
SOLUTION: The frequency error combination logic comprises receiving frequency error information with respect to each channel; combination logic configured to combine the received frequency error information and generate a combined phase error, weighting the received frequency error information from each channel; and a frequency error output configured to apply the combined frequency error to at least one channel phase locked loop.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为具有每个通道的锁相环的多通道数据检测系统提供频率误差组合逻辑。解决方案：频率误差组合逻辑包括相对于每个通道接收频率误差信息; 组合逻辑，其被配置为组合所接收的频率误差信息并产生组合的相位误差，从每个信道对所接收的频率误差信息进行加权; 以及频率误差输出，被配置为将组合的频率误差应用于至少一个通道锁相环。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2009095028A Error combination logic configured for multi-channel data detection system, and method for generating error signal 有权
标题翻译：用于多通道数据检测系统的错误组合逻辑和用于产生错误信号的方法
公开(公告)号：JP2009095028A
公开(公告)日：2009-04-30
申请号：JP2008262296
申请日：2008-10-08
申请人： Internatl Business Mach Corp , インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation
发明人： HUTCHINS ROBERT ALLEN , JELITTO JENS , OELCER SEDAT
IPC分类号： H03L7/091
摘要： PROBLEM TO BE SOLVED: To provide phase-error combination logic for a multi-channel data detection system with a phase locked loop for each channel.
SOLUTION: The phase-error combination logic comprises receiving phase error information with respect to each channel; combination logic configured to combine the received phase error information and generate a combined phase error; and a phase-error output configured to apply the combined phase error to at least one channel phase locked loop. Additionally, error signal combination logic comprises receiving error information of a signal relevant to a phase locked loop with respect to each channel; combination logic configured to combine the received error signal information and generate a combined error signal, weighting the received error signal information from each channel, for example with reliability information. An error compensation output is configured to apply the combined, weighted error signal to at least one channel phase locked loop.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为具有每个通道的锁相环的多通道数据检测系统提供相位误差组合逻辑。解决方案：相位误差组合逻辑包括接收关于每个通道的相位误差信息; 组合逻辑，被配置为组合所接收的相位误差信息并产生组合的相位误差; 以及被配置为将组合的相位误差应用于至少一个通道锁相环的相位误差输出。另外，误差信号组合逻辑包括相对于每个信道接收与锁相环相关的信号的误差信息; 组合逻辑，其被配置为组合所接收的误差信号信息并产生组合误差信号，例如用可靠性信息对来自每个信道的接收到的误差信号信息进行加权。误差补偿输出被配置为将组合的加权误差信号应用于至少一个通道锁相环。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2008034088A Synchronous servo channel for tape drive systems, its operation method, program, and computer infrastructure arrangement method 有权
标题翻译：用于磁带驱动系统的同步伺服通道，其操作方法，程序和计算机基础设施布置方法
公开(公告)号：JP2008034088A
公开(公告)日：2008-02-14
申请号：JP2007192165
申请日：2007-07-24
申请人： Internatl Business Mach Corp , インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation
发明人： CHERUBINI GIOVANNI , ELEFTHERIOU EVANGELOS S , JENS JELITTO , HUTCHINS ROBERT ALLEN
IPC分类号： G11B5/584
CPC分类号： G11B5/59688
摘要： PROBLEM TO BE SOLVED: To provide a fully synchronous servo channel for a data tape drive. SOLUTION: The fully synchronous servo channel for a data tape drive includes the initial acquisition of synchronous servo channel parameters, generation of a timing basis for signal interpolation, generation of a tape velocity estimate and a y-position estimate, and optimum detection of longitudinal position (LPOS) symbols. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为数据磁带驱动器提供完全同步的伺服通道。解决方案：数据磁带驱动器的完全同步伺服通道包括初始采集同步伺服通道参数，产生信号插补的定时基准，产生磁带速度估计和y位置估计，以及最佳检测的纵向位置（LPOS）符号。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2004127507A Method and system for calibrating multimode device 有权
公开(公告)号：JP2004127507A
公开(公告)日：2004-04-22
申请号：JP2003359480
申请日：2003-10-20
申请人： Internatl Business Mach Corp , インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation
发明人： CLARK ALAN ROBERT , HUTCHINS ROBERT ALLEN , JAQUETTE GLEN ALAN
IPC分类号： G01M11/00 , G11B7/00 , G11B7/0037 , G11B7/004 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/125 , G11B11/10 , G11B11/105 , G11B20/10 , G11B20/18 , G11B27/36
CPC分类号： G11B7/126 , G11B7/0037 , G11B7/0045 , G11B11/10595 , G11B20/1879 , G11B27/36
摘要： PROBLEM TO BE SOLVED: To provide a method and a system for calibrating a multimode device in order to execute reading and/or writing on one of a plurality of writing modes.
SOLUTION: The process of reading data written on an information medium on one of a plurality of writing modes includes the step of setting the configuration of a correction circuit capable of being set to a configuration for measuring a parameter corresponding to one of the plurality of writing modes in order to execute measurement corresponding to the writing mode during a given correction cycle, and executing a plurality of measurements for the read data by using the correction circuit set to the configuration in order to measure one or a plurality of reading parameters simultaneously, and the step of optimizing the writing mode of the multimode device based on a selected measured value.
COPYRIGHT: (C)2004,JPO

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