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1. 发明专利

JP5607562B2 Recording medium for use by the method and the recording apparatus and the method for selecting an optimized write strategy 有权
标题翻译：空值
公开(公告)号：JP5607562B2
公开(公告)日：2014-10-15
申请号：JP2011062144
申请日：2011-03-22
申请人：コーニンクレッカフィリップスエヌヴェ
发明人：ジェラルドイーエヌシュレウルス , ゲールトルイテン
IPC分类号： G11B7/0045 , G11B7/24 , G11B7/00 , G11B7/125 , G11B7/1263 , G11B7/1267 , G11B19/26 , G11B20/18
CPC分类号： G11B7/126 , G11B7/0045 , G11B19/26 , G11B20/182

2. 发明专利

JP5450376B2 Signal evaluation method and signal evaluation device 有权
公开(公告)号：JP5450376B2
公开(公告)日：2014-03-26
申请号：JP2010500578
申请日：2009-02-27
申请人：パナソニック株式会社
发明人：晴旬宮下 , 浩平中田 , 泰守日野 , 直浩木村
IPC分类号： G11B20/18 , G11B7/005
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/10111 , G11B20/1012 , G11B20/10212 , G11B20/10277 , G11B20/10296 , G11B20/10361 , G11B20/1037 , G11B20/10398 , G11B20/10472 , G11B20/10481 , G11B20/1816 , G11B20/182 , G11B20/225 , G11B2220/2541

3. 发明专利

JP2012009108A Non-linear property measurement apparatus, non-linear property measuring method and magnetic recording replay device 审中-公开
标题翻译：非线性物品测量装置，非线性物质测量方法和磁记录重放装置
公开(公告)号：JP2012009108A
公开(公告)日：2012-01-12
申请号：JP2010144002
申请日：2010-06-24
申请人： Toshiba Corp , 株式会社東芝
发明人： UENO HIROAKI
IPC分类号： G11B5/09 , G11B5/00
CPC分类号： G11B19/048 , G11B5/012 , G11B20/182 , G11B2220/2516
摘要： PROBLEM TO BE SOLVED: To provide a non-linear property measurement apparatus, a non-linear property measuring method and a magnetic recording replay device with which convenience relating to the derivation of NLTS can be enhanced.SOLUTION: A non-linear property measurement apparatus includes a first measuring means for measuring the harmonic component of a first predetermined degree from replay signal of reference signal recorded in a magnetic recording medium, a second measuring means for measuring the harmonic component of a second predetermined degree from replay signal of signal to be measured which is recorded in the magnetic recording medium, and a calculating means for calculating a non-linear transition shift at the magnetic recording medium by calculating the value obtained by division of the harmonic component of the second predetermined degree by the harmonic component of the first predetermined degree using transverse sine function.
摘要翻译：要解决的问题：提供一种非线性特性测量装置，可以提高与NLTS的推导有关的便利性的非线性特性测量方法和磁记录重放装置。解决方案：非线性特性测量装置包括：第一测量装置，用于测量记录在磁记录介质中的参考信号的重放信号中的第一预定度的谐波分量;第二测量装置，用于测量谐波分量记录在磁记录介质中的待测信号的重播信号的第二预定程度，以及计算装置，用于通过计算通过对磁记录介质的谐波分量的除法获得的磁记录介质上的非线性跃变位移使用横向正弦函数的第一预定度的谐波分量的第二预定度。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2011018426A Evaluation method of perpendicular magnetic recording medium, and method for manufacturing the perpendicular magnetic recording medium 审中-公开
标题翻译：全息磁记录介质的评估方法及制造全磁性记录介质的方法
公开(公告)号：JP2011018426A
公开(公告)日：2011-01-27
申请号：JP2009164086
申请日：2009-07-10
申请人： Wd Media Singapore Pte Ltd , ダブリュディ・メディア・シンガポール・プライベートリミテッド
发明人： SAITO TOMOYO
IPC分类号： G11B5/84 , G11B5/00
CPC分类号： G11B5/82 , G11B5/84 , G11B20/10398 , G11B20/182 , G11B2220/2516
摘要： PROBLEM TO BE SOLVED: To provide a method for evaluating characteristics of a perpendicular magnetic recording medium that is suitable for obtaining a perpendicular magnetic recording medium that is adaptable to increased recording density.SOLUTION: The method for evaluating the perpendicular magnetic recording medium includes: a step for recording a first signal of a specific frequency at an arbitrary first position on the perpendicular magnetic recording medium; a step for measuring a reproduction output of the first signal, and measuring the signal-to-noise ratio (initial value) of the first signal at a peak position at which the reproduction output becomes largest; a step for recording a signal of a specific frequency at a second position separated from the first position by a predetermined distance in the radial direction of the perpendicular magnetic recording medium; a step for measuring again the signal-to-noise ratio of the first signal at the peak position; a step for repeating a step of recording a signal of a specific frequency at a position closer to the first position from the second position by a predetermined distance, and measuring again the signal-to-noise ratio of the first signal at the peak position, while sequentially approaching in the direction of the first position from the second position; and a step of determining whether the value of the signal-to-noise ratio has decreased by a predetermined range or more compared with the initial value.
摘要翻译：要解决的问题：提供一种用于评估适合于获得适于增加记录密度的垂直磁记录介质的垂直磁记录介质的特性的方法。解决方案：用于评估垂直磁记录介质的方法包括：a 用于在垂直磁记录介质上的任意第一位置记录特定频率的第一信号的步骤; 测量第一信号的再现输出并测量在再现输出变得最大的峰值位置处的第一信号的信噪比（初始值）的步骤; 在与第一位置分离的第二位置处，在垂直磁记录介质的径向方向上记录特定频率的信号预定距离的步骤; 再次测量峰值位置处的第一信号的信噪比的步骤; 重复在距离第二位置更靠近第一位置的位置记录特定频率的信号预定距离的步骤，并再次测量峰值位置处的第一信号的信噪比，同时从第二位置顺序地接近第一位置的方向; 以及确定所述信噪比的值是否已经比所述初始值降低预定范围或更大的步骤。

5. 发明专利

JP2010182342A Method of evaluating reproduced signal and optical disk drive 有权
标题翻译：评估重现信号和光盘驱动器的方法
公开(公告)号：JP2010182342A
公开(公告)日：2010-08-19
申请号：JP2009022112
申请日：2009-02-03
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MINEMURA HIROYUKI , ETO SOICHIRO , KUROKAWA TAKAHIRO , KUSABA HISAKAZU
IPC分类号： G11B20/18 , G11B7/005
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/1012 , G11B20/10212 , G11B20/10296 , G11B20/1816 , G11B20/182 , G11B2220/2541 , H03M13/39 , H03M13/6343
摘要： PROBLEM TO BE SOLVED: To provide a highly efficient and reliable reproduced signal evaluation method and an optical disk drive using the method since in a large capacity optical disk system with a constraint length of 5 or longer, the circuit size increases exponentially in accordance with an increase in the constraint length of a PRML system when determining the matching of a binarized bitstream with predetermined evaluation bitstreams and calculating the Euclidean distances to evaluate the quality of a reproduced signal. SOLUTION: Assuming that the number of 2T's appearing successively in a predetermined evaluation bit stream is i, the evaluation bitstream is divided into a main bitstream (5+2i) long and sub bitstreams at ends of the main bitstream. A determination process to determine whether a predetermined evaluation bitstream is included in the binarized bitstreams is aggregated with a main bitstream matching determination. This prevents an increase in the circuit scale. At the same time, by separately summing up for each main bitstream the calculated results of Euclidean distance between the reproduced signal and the target signal corresponding to the evaluation bitstream, the scale of an evaluation summing circuit can be reduced. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供高效可靠的再现信号评估方法和使用该方法的光盘驱动器，因为在约束长度为5或更大的大容量光盘系统中，电路尺寸以指数方式增加根据PRML系统的约束长度的增加，当确定二进制比特流与预定评估比特流的匹配时，并计算欧氏距离以评估再现信号的质量。解决方案：假设在预定的评估比特流中连续出现的2T的数目是i，则将评估比特流分成主比特流（5 + 2i）长，并在主比特流的末端被划分为子比特流。用于确定在二进制化比特流中是否包括预定评估比特流的确定处理与主比特比特匹配确定进行聚合。这防止了电路规模的增加。同时，通过对每个主比特流分别求和再现信号与对应于评估比特流的目标信号之间的欧氏距离的计算结果，可以减小评估求和电路的比例。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2010123153A Magnetic storage apparatus, head test method, head test apparatus 审中-公开
标题翻译：磁性储存装置，头部测试方法，头部测试装置
公开(公告)号：JP2010123153A
公开(公告)日：2010-06-03
申请号：JP2008293221
申请日：2008-11-17
申请人： Toshiba Storage Device Corp , 東芝ストレージデバイス株式会社
发明人： SHIBAZAKI TAKESHI
IPC分类号： G11B21/10
CPC分类号： G11B20/182 , G11B5/455 , G11B19/048 , G11B20/1816 , G11B27/36 , G11B2220/2516
摘要： PROBLEM TO BE SOLVED: To provide a magnetic storage apparatus which reduces influence of side erase in writing a read data pattern in measurement of side erase, to provide a head test method, and a head test apparatus.
SOLUTION: The magnetic storage apparatus includes: a setting module 33 which sets a plurality of sections divided in the track direction of a magnetic medium and a predetermined reference path along the track direction, and also sets at least one offset for each of the sections such that the offset is different between adjacent sections about the offset being a position of the head with respect to the reference path; a write module which writes a first data pattern to the offset set by the setting module and writes a second data pattern to the reference path a predetermined number of times; a read module which reads the first data pattern written by the write module; and a quality measurement module 34 which measures the quality of the first data pattern read by the read module.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种在侧面擦除测量中减少写入读取的数据模式时的侧面擦除的影响的磁性存储装置，以提供头部测试方法和头部测试装置。解决方案：磁存储装置包括：设置模块33，其设置沿磁道方向沿磁道的磁道方向分割的多个部分和预定的参考路径，并且还设置至少一个偏移量所述部分使得相邻部分之间的偏移在偏移处是不同的，即所述头部相对于所述参考路径的位置; 写入模块，其将第一数据模式写入由所述设置模块设置的偏移量，并将第二数据模式写入所述参考路径预定次数; 读取模块，读取由写入模块写入的第一数据模式; 以及测量读取模块读取的第一数据模式的质量的质量测量模块34。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2008305483A Optical disk recording device and optical disk recording method 审中-公开
标题翻译：光盘记录装置和光盘记录方法
公开(公告)号：JP2008305483A
公开(公告)日：2008-12-18
申请号：JP2007151088
申请日：2007-06-07
申请人： Hitachi Ltd , Hitachi-Lg Data Storage Inc , 株式会社日立エルジーデータストレージ , 株式会社日立製作所
发明人： HIMI TAKUYA , ISHII TOSHIKI , TODA TAKESHI
IPC分类号： G11B7/0045 , G11B7/125
CPC分类号： G11B20/182 , G11B7/00456 , G11B7/1267 , G11B27/36 , G11B2020/1275 , G11B2220/2537
摘要： PROBLEM TO BE SOLVED: To provide a highly reliable recording and reproducing device and a reliable method of recording reproduced data. SOLUTION: This device and method are employed to: record a test mark in a test area with a predetermined write strategy; acquire signal amplitudes corresponding to a front part, the middle part and the rear part of the test mark by reproducing the test mark; determine whether the shape of the test mark is a desired shape of a mark from at least either of a ratio of the amplitude of the front part to the amplitude of the rear part, or a ratio of the amplitude of the middle part to the amplitude of the rear part; correct the write strategy when the test mark is not the predetermined mark shape; and record information in a data area with the corrected write strategy. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供高度可靠的记录和再现装置以及记录再现数据的可靠方法。解决方案：该装置和方法用于：在具有预定写入策略的测试区域中记录测试标记; 通过再现测试标记来获取对应于测试标记的前部，中间部分和后部的信号幅度; 从前部的振幅与后部的振幅的比例中的至少一个或中间部的振幅与振幅的比例中的至少一个来判断测试标记的形状是否是期望的标记形状的后部当测试标记不是预定的标记形状时，纠正写入策略; 并在具有更正的写策略的数据区中记录信息。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2007149194A Test disk and drive testing method 审中-公开
标题翻译：测试盘和驱动测试方法
公开(公告)号：JP2007149194A
公开(公告)日：2007-06-14
申请号：JP2005340402
申请日：2005-11-25
申请人： Sanyo Electric Co Ltd , 三洋電機株式会社
发明人： NAKATANI MORIO , HATTORI KATSUMI
IPC分类号： G11B7/007 , G11B7/004 , G11B7/26
CPC分类号： G11B20/182 , G11B19/04 , G11B2007/0013 , G11B2220/2579 , H04N5/85
摘要： PROBLEM TO BE SOLVED: To provide a test disk and a drive testing method capable of smoothly testing whether an HD DVD drive can properly record/play a two-layer type DRAW type HD DVD. SOLUTION: In the test disk 30, data of capacity (about 3 MByte) of the degree of a small fraction of the recording capacity of layers 0 and 1 is recorded over the layers 0 and 1, and a middle area of the layers 0 and 1 is expanded. Next, the test disk 30 is mounted in a test object drive, and a testing device inquires of the test object drive, a start position of the middle area, a recording end position of file data, a recordable start position of the disk and a recordable capacity (spare capacity). When the inquiry is properly responded, the existence/absence of middle area expansion, the acceptance/rejection of recording of the disk, the recordable capacity and the recordable start position can properly be recognized so that it can be determined that the test object drive can perform a recording operation from a proper recording position when the DRAW type HD DVD is recordable. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供能够平滑地测试HD DVD驱动器是否可以正确地记录/播放两层式DRAW型HD DVD的测试盘和驱动器测试方法。解决方案：在测试盘30中，层0和1的记录容量的一小部分的容量（约3兆字节）的数据被记录在层0和1上，并且层0和1扩展。接下来，将测试盘30安装在测试对象驱动器中，并且测试设备询问测试对象驱动器，中间区域的开始位置，文件数据的记录结束位置，盘的可记录开始位置和可记录容量（备用容量）。当调查得到正确响应时，可以正确地识别中间区域扩展的存在/不存在，盘的记录的接受/拒绝，可记录容量和可记录的开始位置，以便可以确定测试对象驱动可以当DRAW型HD DVD可记录时，从适当的记录位置执行记录操作。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2006172590A Manufacturing method for magnetic disk device 审中-公开
标题翻译：磁盘设备的制造方法
公开(公告)号：JP2006172590A
公开(公告)日：2006-06-29
申请号：JP2004362809
申请日：2004-12-15
申请人： Hitachi Global Storage Technologies Netherlands Bv , ヒタチグローバルストレージテクノロジーズネザーランドビーブイ
发明人： TANIGUCHI MASATO , NAKAJIMA MICHIO , UMEMURA KAORU
IPC分类号： G11B20/18 , G11B5/09 , G11B20/10
CPC分类号： G11B27/36 , G11B20/10009 , G11B20/182 , G11B2005/001 , G11B2220/2516 , Y10T29/49025 , Y10T29/49027 , Y10T29/4903 , Y10T29/49032
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method for a magnetic disk device including a process for detecting and processing a defective sector, in which reproduction failure occurs at low operational temperature, by a simple method. SOLUTION: Detecting the defective sector is performed by read/write test at a high operational temperature of 40-65°C. When the data recorded in the defective sector is reproduced, gain for high frequency band turns out to be reduced. After recording the test data in each of the sectors, a value for a filter factor of an FIR filter arranged in a data reproduction system is changed from the optimal value, frequency gain is reduced, the testing data is reproduced, and the sector in which the reproduction failure occurs is registered as the defect. By correcting the value of the filter factor of the FIR filter, detecting the defective sector, in which the gain of the high frequency band for the data reproduction system is reduced and the reproduction failure becomes outstanding at a low operational temperature, is made possible. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：提供一种磁盘装置的制造方法，其包括用简单的方法检测和处理在低操作温度下发生再现故障的缺陷扇区的处理的处理。
解决方案：通过在40-65°C的高工作温度下进行读/写测试来检测缺陷扇区。当记录在缺陷扇区中的数据被再现时，高频带的增益被降低。在每个扇区中记录测试数据之后，布置在数据再现系统中的FIR滤波器的滤波器因子的值从最佳值，频率增益减小，测试数据被再现，以及其中发生再现故障被注册为缺陷。通过校正FIR滤波器的滤波器因子的值，可以检测在数据再现系统中的高频带的增益减小并且在低操作温度下再现故障变得突出的缺陷扇区。版权所有（C）2006，JPO＆NCIPI

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