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1. 发明专利

JP2013046010A Information storage element 有权
标题翻译：信息存储元素
公开(公告)号：JP2013046010A
公开(公告)日：2013-03-04
申请号：JP2011184661
申请日：2011-08-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MINEMURA HIROYUKI , ANZAI YUMIKO
IPC分类号： H01L27/105 , G11C13/00 , H01L45/00
摘要： PROBLEM TO BE SOLVED: To provide an information storage element capable of multi-value recording and having a wide margin of pulse current conditions when compared with that of a system where phase mixture ratio of amorphous and crystal is controlled.SOLUTION: Three states of fusion crystal consisting of amorphous state, solid phase crystal of fine grains, and crystal state of large grain size are formed by feeding pulse currents having different shapes, respectively, to a phase change material, thus materializing a reliable information storage element capable of multi-value recording and having a wide margin of pulse current conditions when compared with prior art. In order to form the three states, recrystallization speed and resistance after fusion are controlled by changing the composition of the phase change material, or adding other element.
摘要翻译：要解决的问题：提供一种能够进行多值记录的信息存储元件，与控制非晶体和晶体的相位混合比的系统相比，具有宽的脉冲电流条件。解决方案：通过将不同形状的脉冲电流分别馈送到相变材料中，形成由非晶状态，细晶粒的固相晶体和大晶粒尺寸的晶体状态的三种状态，从而实现可靠的信息存储元件，其能够进行多值记录，并且与现有技术相比具有宽的脉冲电流条件。为了形成三种状态，通过改变相变材料的组成或添加其它元素来控制熔融后的再结晶速度和电阻。版权所有（C）2013，JPO＆INPIT

2. 发明专利

JP2013030266A Optical information recording and reproduction method 审中-公开
标题翻译：光信息记录和再现方法
公开(公告)号：JP2013030266A
公开(公告)日：2013-02-07
申请号：JP2012196763
申请日：2012-09-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHINTANI TOSHIMICHI , MINEMURA HIROYUKI , ETO SOICHIRO
IPC分类号： G11B7/0045 , G11B7/005 , G11B7/1263 , G11B7/1267
摘要： PROBLEM TO BE SOLVED: To provide an optical information recording and reproduction method capable of reproducing a recording mark smaller than optical resolution with excellent quality by resetting a super resolution reproduction condition together with resetting of a recording condition.SOLUTION: In a test recording step for detecting deviation from an optimum value of a recording condition to calculate optimum recording power, super resolution reproduction power is changed at the same time when recording power is changed. At that time, recording power and reproduction power are first adjusted about a long mark, and then trial writing and trial reading about all marks including a short mark are executed to perform power adjustment.
摘要翻译：解决的问题：提供一种光信息记录和再现方法，其能够通过重置超分辨率再现条件以及记录条件的重设来再现具有优异质量的光学分辨率的记录标记。解决方案：在用于检测与记录条件的最佳值的偏差以计算最佳记录功率的测试记录步骤中，在记录功率改变的同时改变超分辨率再现功率。此时，记录功率和再现功率首先被调整为长标记，然后执行关于包括短标记的所有标记的试写和试阅，以进行功率调整。版权所有（C）2013，JPO＆INPIT

3. 发明专利

JP2012248249A Data recording method for semiconductor storage device 有权
标题翻译：半导体存储器件的数据记录方法
公开(公告)号：JP2012248249A
公开(公告)日：2012-12-13
申请号：JP2011118600
申请日：2011-05-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MINEMURA HIROYUKI , ANZAI YUMIKO
IPC分类号： G11C13/00 , H01L27/105 , H01L45/00
摘要： PROBLEM TO BE SOLVED: To improve a transfer speed performance and reliability for a phase change memory that has a memory array structure in which a plurality of memory bits having a current selector switch and phase change film electrically formed in parallel are electrically arranged in series.SOLUTION: Each current selector switch of a plurality of memory bits which are connected in serial is sequentially switched ON/OFF within the time period of occurrence of a pulse current generated by a pulse current source, and current is flowed through a phase change film of at least one of the plurality of memory bits for a time period shorter than that of occurrence of the pulse current, thereby writing data sequentially to the plurality of memory bits.
摘要翻译：解决的问题为了提高具有存储器阵列结构的相变存储器的传送速度性能和可靠性，其中具有并联电气形成的具有电流选择器开关和相变膜的多个存储器位电配置系列。解决方案：串联连接的多个存储器位的每个电流选择开关在由脉冲电流源产生的脉冲电流发生的时间段内被顺序地接通/断开，并且电流流过相位改变多个存储器位中的至少一个存储位的电影时间比脉冲电流发生的时间短，从而顺序地将数据写入多个存储器位。版权所有（C）2013，JPO＆INPIT

4. 发明专利

JP2011187160A Information recording device, information recording method, and recording medium 有权
标题翻译：信息记录装置，信息记录方法和记录介质
公开(公告)号：JP2011187160A
公开(公告)日：2011-09-22
申请号：JP2011141387
申请日：2011-06-27
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： NISHIMURA KOICHIRO , KUREBAYASHI MASAAKI , MINEMURA HIROYUKI
IPC分类号： G11B20/10 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To prevent degradation in recording compatibility and playback compatibility due to a difference in recording quality when recording quality is different with respect to a threshold of switch processing due to a difference in a reproducing means, and to secure compatibility of a device especially between drives of PRML correspondence/non-correspondence, and between drives having different recording speeds/reading speeds.
SOLUTION: This information recording device for recording information in a recording medium provided with a first recording area for recording information and a second recording area being a spare area for the first recording area is provided with a recording part for writing information in the recording area of the recording medium, and a control part for controlling the recording part, and a reference value to be used in the case of changing a recording area for writing the information therein from the first recording area to the second recording area, is made different between when processed by a first signal processing method and when processed by a second signal processing method.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了防止由于再现装置的差异而导致记录质量相对于切换处理的阈值而不同的记录质量差异导致的记录兼容性和回放兼容性的降低，并且确保兼容性特别是在PRML对应/非对应的驱动器之间以及具有不同记录速度/读取速度的驱动器之间的装置。解决方案：用于在设置有用于记录信息的第一记录区域和作为第一记录区域的备用区域的第二记录区域的记录介质中记录信息的信息记录装置设置有用于在记录介质的记录区域和用于控制记录部分的控制部分，以及在将从第一记录区域向其中写入信息的记录区域改变为第二记录区域时使用的基准值当通过第一信号处理方法处理时和由第二信号处理方法处理时不同。版权所有（C）2011，JPO＆INPIT

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

JP2009110655A Test writing method, information recording method, and information recording device 有权
标题翻译：测试写作方法，信息记录方法和信息记录装置
公开(公告)号：JP2009110655A
公开(公告)日：2009-05-21
申请号：JP2008329026
申请日：2008-12-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： USHIYAMA JUNKO , SHINTANI TOSHIMICHI , MINEMURA HIROYUKI
IPC分类号： G11B7/0045 , G11B7/125
摘要： PROBLEM TO BE SOLVED: To provide a test writing method precisely obtaining a recording condition in a short time period in high-speed recording in which the time after the emission of a leading end pulse until the emission of the next pulse is shortened, and to provide a device adapted thereto. SOLUTION: In a 2T-based strategy, an even-length recording pattern comprising a recording mark of a length corresponding to an even multiple of a reference clock period and an odd-length recording pattern comprising a recording mark of a length corresponding to an odd multiple of the reference clock period are recorded, respectively, to perform reproduction. On the basis of the reproduction results, the optimum recording pulse waveform of the even length and the optimum recording pulse waveform of the odd length are set. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种在高速记录中精确获得记录条件的测试写入方法，在高速记录中，直到发出下一个脉冲的前导脉冲发射之后的时间被缩短，并提供适应于其的装置。解决方案：在基于2T的策略中，包括长度对应于参考时钟周期的偶数倍的记录标记的偶数长度记录模式和包括长度对应的记录标记的奇数长度记录模式分别记录到参考时钟周期的奇数倍以进行再现。基于再现结果，设定偶数长度的最佳记录脉冲波形和奇数长度的最佳记录脉冲波形。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2008210485A Optical information recording medium and information reproducing method 有权
标题翻译：光信息记录介质和信息再现方法
公开(公告)号：JP2008210485A
公开(公告)日：2008-09-11
申请号：JP2007048330
申请日：2007-02-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHINTANI TOSHIMICHI , MINEMURA HIROYUKI , ANZAI YUMIKO , ETO SOICHIRO
IPC分类号： G11B7/24 , G11B7/243
CPC分类号： G11B7/005 , G11B7/24062 , G11B7/24065 , G11B7/252 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316
摘要： PROBLEM TO BE SOLVED: To solve the problem that a super resolution signal is small and it is difficult to obtain a satisfactory signal amplitude since a super resolution region is made small for heightening density of recording data in a conventional super resolution. SOLUTION: The signal amplitude is increased by achieving a disk structure wherein reverse optical responses are generated by super resolution in a recording mark part and a space part. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题为了解决超分辨率信号小的问题，难以获得令人满意的信号幅度，因为超分辨率区域对于提高传统超分辨率的记录数据的密度而言较小。解决方案：通过实现在记录标记部分和空间部分中通过超分辨率产生反向光学响应的盘结构来增加信号幅度。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2008165927A Optical disk medium and optical disk drive 有权
标题翻译：光盘介质和光盘驱动器
公开(公告)号：JP2008165927A
公开(公告)日：2008-07-17
申请号：JP2006356034
申请日：2006-12-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MINEMURA HIROYUKI , SHINTANI TOSHIMICHI , ANZAI YUMIKO
IPC分类号： G11B7/007 , G11B7/005 , G11B7/09
CPC分类号： G11B7/2437 , G11B7/0903 , G11B7/24065 , G11B7/24079 , G11B2007/24308 , G11B2007/2431 , G11B2007/24314 , G11B2007/24316
摘要： PROBLEM TO BE SOLVED: To provide a medium structure for reducing a track for a three dimensional pit selection type disk and an optical disk drive compatible therewith. SOLUTION: A plurality of data pit strings are prepared between track guide grooves, and a disk is configured to form a phase change recording film only in the data pit string. A normal resolution signal cancellation is achieved by setting reflectance and phases of a space section and a mark section properly, and deterioration of data cross talk and a push-pull signal is prevented. An optical disk drive configured to read wobble address information after selecting a signal from a push-pull signal of a main beam and a push-pull signal of a sub-beam is used for the optical disk medium of this invention. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供用于减小用于三维凹坑选择型盘的轨道的介质结构和与其兼容的光盘驱动器。解决方案：在轨道引导槽之间准备多个数据凹坑串，并且盘被配置为仅在数据凹坑串中形成相变记录膜。正常分辨率信号消除通过适当地设置空间部分和标记部分的反射率和相位来实现，并且防止数据串扰和推挽信号的恶化。本发明的光盘介质使用的光盘驱动器被配置为在从主波束的推挽信号和子波束的推挽信号中选择信号之后读取摆动地址信息。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2008071414A Method of learning reproduction power 有权
标题翻译：学习再生能力的方法
公开(公告)号：JP2008071414A
公开(公告)日：2008-03-27
申请号：JP2006248875
申请日：2006-09-14
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： KUROKAWA TAKAHIRO , MINEMURA HIROYUKI
IPC分类号： G11B7/005 , G11B7/125
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/1263
摘要： PROBLEM TO BE SOLVED: To solve the problem that it is difficult for a conventional optical disk recording and reproducing apparatus to control reproduction power precisely since the apparatus cannot simply measure the power of a main beam focused on an information recording surface and contributing to recording and reproduction among laser beams outputted from an objective lens. SOLUTION: The ratio of proper reproduction power to erasure threshold power is obtained in advance and in the case of learning the reproduction power by each drive apparatus, the erasure threshold power is measured and multiplied by the ratio to determine the reproduction power. The method of learning the reproduction power makes it possible to determine the proper reproduction power without regard to the variance of an optical pickup or the variance of sensitivity of a medium. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题为了解决传统的光盘记录和再现装置难以精确地控制再现功率的问题，因为该装置不能简单地测量聚焦在信息记录表面上的主光束的功率，并且有助于以在从物镜输出的激光束之间进行记录和再现。解决方案：预先获得适当的再现功率与擦除阈值功率的比率，并且在通过每个驱动装置学习再现功率的情况下，测量擦除阈值功率并乘以该比率以确定再现功率。学习再现功率的方法使得可以确定适当的再现功率，而不考虑光学拾取器的方差或介质的灵敏度的变化。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2007280571A Optical disk device and reproduction signal processing method 审中-公开
标题翻译：光盘设备和生成信号处理方法
公开(公告)号：JP2007280571A
公开(公告)日：2007-10-25
申请号：JP2006109352
申请日：2006-04-12
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： KIKUKAWA ATSUSHI , MINEMURA HIROYUKI
IPC分类号： G11B7/005 , G11B20/10 , G11B20/18
CPC分类号： G11B20/18 , G11B19/04 , G11B20/10009 , G11B20/10046 , G11B20/10111 , G11B20/10296 , G11B20/10481 , G11B2020/1288 , G11B2020/183 , G11B2220/218 , G11B2220/2541
摘要： PROBLEM TO BE SOLVED: To provide a highly compatible optical disk device by having high read-retry ability and appropriately verifying another model.
SOLUTION: The optical disk device includes: a reproduction system for arbitrarily changing reproduction performance; and a means 5 for detecting and discriminating the main cause of a read error. Read-retry is performed by using a reproduction parameter corresponding to the main cause of the read error. When verifying is performed, the reproduction performance of the reproduction system is reduced so as to perform verifying.
COPYRIGHT: (C)2008,JPO&INPIT

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