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1. 发明专利

JP2006172532A Optical disk device, and recording power setting method 审中-公开
标题翻译：光盘设备和记录功率设置方法
公开(公告)号：JP2006172532A
公开(公告)日：2006-06-29
申请号：JP2004359555
申请日：2004-12-13
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： NIHEI MAKOTO , HARAI MITSURU , TODA TAKESHI , ISHII TOSHIKI
IPC分类号： G11B7/0045 , G11B7/125
摘要： PROBLEM TO BE SOLVED: To set an optimum power ratio with high precision in a short time concerning a binary pulse recording system by considering nonlinearity in a laser emission characteristic. SOLUTION: A signal is recorded with a recording laser, having binary power levels (Po, Pm, provided that Po>Pm) relative to an optical disk, concerning a recording power setting method. A power ratio k(=Po/Pm) is defined as a prescribed value, a test signal, which is obtained by changing recording power Po stepwise, is recorded in the optical disk, and then, the test signal recorded in the optical disk is reproduced. A β value, which indicates asymmetry of amplitude, is acquired from the reproduced signal, so as to calculate the change rate Δβ(=dβ/dPo) of the β value relative to the recording power Po. The value of the calculated change ratio Δβ in a target β value is compared with a target Δβ value. Based on the result, the power ratio k of the recording laser is corrected and set. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过考虑激光发射特性中的非线性，在短时间内通过考虑二进制脉冲记录系统来设置最佳功率比。解决方案：关于记录功率设置方法，用记录激光器记录信号，其具有相对于光盘的二进制功率电平（Po，Pm，Po> Pm）。将功率比k（= Po / Pm）定义为规定值，通过逐步改变记录功率Po获得的测试信号被记录在光盘中，然后记录在光盘中的测试信号是转载。从再现信号中获取表示振幅不对称的β值，以计算β值相对于记录功率Po的变化率Δβ（=dβ/ dPo）。将目标β值中的计算出的变化率Δβ的值与目标Δβ值进行比较。基于该结果，校正和设定记录激光器的功率比k。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2009163825A Optical disk unit and information recording method 审中-公开
标题翻译：光盘单元和信息记录方法
公开(公告)号：JP2009163825A
公开(公告)日：2009-07-23
申请号：JP2008000870
申请日：2008-01-08
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： ISHII TOSHIKI , TODA TAKESHI , YASUKAWA TAKAKIYO , HIMI TAKUYA
IPC分类号： G11B7/0045 , G11B7/09 , G11B7/125 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To provide a technique of selecting an optimum recording strategy in a prescribed optical disk from among the plurality of recording strategies in an optical disk unit. SOLUTION: An optimum recording pulse width of the shortest mark is obtained by acquiring power margins and defocus margins calculated from jitters acquired by performing recording and playback of repetitive patterns of the shortest marks and shortest spaces with respect to a plurality of recording pulse widths. The recording strategy in which the recording pulse width of the shortest mark is approximate to the optimum recording pulse width of the shortest mark is employed from among the plurality of recording strategies. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供从光盘单元中的多个记录策略之中在规定光盘中选择最佳记录策略的技术。解决方案：通过获取通过对多个记录脉冲执行最短标记和最短空间的重复图案的记录和重放而获得的抖动所获得的功率余量和散焦余量而获得最短标记的最佳记录脉冲宽度宽度从多个记录策略中采用其中最短标记的记录脉冲宽度近似于最短记录脉冲宽度的记录策略。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2009157980A Device and method for optical disk recording 审中-公开
标题翻译：光盘记录装置及方法
公开(公告)号：JP2009157980A
公开(公告)日：2009-07-16
申请号：JP2007333447
申请日：2007-12-26
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
摘要： PROBLEM TO BE SOLVED: To provide a recording/reproducing device and a recording method wherein reliability of reproduced data is high. SOLUTION: A test mark is recorded in a test area by a predetermined write strategy. The test mark is reproduced to obtain signal amplitudes corresponding to front, middle and rear portions of the test mark. Whether the shape of the test mark is a desired mark shape is determined based on at least one of a ratio of amplitude between the front and rear portions and a ratio of amplitude between the middle and rear portions. If the test mark is not a desired mark shape, the write strategy is corrected, and information is recorded in a data area by the corrected write strategy. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种记录/再现装置和其中再现数据的可靠性高的记录方法。
解决方案：测试标记通过预定的写入策略记录在测试区域中。复印测试标记以获得与测试标记的前，中，后部分对应的信号幅度。基于前部和后部之间的振幅比和中间部分和后部之间的振幅之比中的至少一个来确定测试标记的形状是否是所需标记形状。如果测试标记不是所需的标记形状，则写入策略被校正，并且通过校正的写入策略将信息记录在数据区域中。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2008103017A Optical disk unit and information recording method 审中-公开
标题翻译：光盘单元和信息记录方法
公开(公告)号：JP2008103017A
公开(公告)日：2008-05-01
申请号：JP2006284498
申请日：2006-10-19
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： ISHII TOSHIKI , TODA TAKESHI
IPC分类号： G11B7/0045 , G11B7/125
摘要： PROBLEM TO BE SOLVED: To provide a technology for an optical disk unit which can efficiently correct pulse timing of recording pulses in a short period of time to improve recording quality. SOLUTION: The method for information recording carries out the following steps: a step for recording with a maximum recording power, a step for measuring a first edge shift and jitter of a record marks from reproducing signals, a step for storing a first recording strategy and the first jitter in a storing means, a step for correcting pulse timing of the recording pulses based on the first edge shift and generating second pulse timing, a step for recording and reproducing by using the pulse timing and storing the recording strategy and the jitter in the storing means until the jitter becomes equal to or lower than a certain threshold or the number of correction reaches a limit, and a step for adopting the recording strategy which finally attains the minimum jitter. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够在短时间内有效地校正记录脉冲的脉冲定时的光盘单元的技术，以提高记录质量。解决方案：用于信息记录的方法执行以下步骤：用于记录最大记录功率的步骤，用于测量第一边缘移位的步骤和从再现信号的记录标记的抖动的步骤，用于存储第一记录策略和存储装置中的第一抖动，用于基于第一边缘移位校正记录脉冲的脉冲定时并产生第二脉冲定时的步骤，通过使用脉冲定时记录和再现并存储记录策略的步骤，以及直到抖动变得等于或低于某个阈值或校正次数达到极限的存储装置中的抖动，以及采用最终达到最小抖动的记录策略的步骤。版权所有（C）2008，JPO＆INPIT

5. 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

6. 发明专利

JP2007149239A Optical disk device and information recording method 审中-公开
标题翻译：光盘设备和信息记录方法
公开(公告)号：JP2007149239A
公开(公告)日：2007-06-14
申请号：JP2005343206
申请日：2005-11-29
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： ISHII TOSHIKI , TODA TAKESHI , FUSHIMI TETSUYA , IMAI MASASHI
IPC分类号： G11B7/0045 , G11B7/125
CPC分类号： G11B7/00456 , G11B7/1267
摘要： PROBLEM TO BE SOLVED: To provide technology for improving recording quality by correcting an edge of a recording pulse in an optical disk apparatus. SOLUTION: Optimum recording power of the recording pulse is obtained by OPC processing by recording strategy of first pulse timing, recording is performed by the recording pulse of the optimum recording power, first edge shift quantity of a recording mark is measured from a reproduced signal, edge correction of the recording pulse is performed, and second pulse timing of the recording strategy is formed, after that, pulse width of the recording pulse is changed and recording is performed, the second edge shift quantity of the recording mark is measured from the reproduced signal, and an optimum edge position of the recording pulse is calculated based on the first edge shift quantity and the second edge shift quantity. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供通过校正光盘装置中的记录脉冲的边缘来提高记录质量的技术。解决方案：通过记录第一脉冲定时策略的OPC处理获得记录脉冲的最佳记录功率，通过最佳记录功率的记录脉冲执行记录，记录标记的第一边沿位移量从再现信号，进行记录脉冲的边缘校正，并且形成记录策略的第二脉冲定时，之后改变记录脉冲的脉冲宽度并进行记录，测量记录标记的第二边沿位移量并根据第一边缘移位量和第二边缘移位量来计算记录脉冲的最佳边缘位置。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2006277780A Information recording and reproducing method and information recording and reproducing device 审中-公开
标题翻译：信息记录和复制方法和信息记录和再现设备
公开(公告)号：JP2006277780A
公开(公告)日：2006-10-12
申请号：JP2005090462
申请日：2005-03-28
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： TODA TAKESHI , ISHII TOSHIKI
IPC分类号： G11B7/0045 , G11B7/125
CPC分类号： G11B7/1267 , G11B7/0045 , G11B7/24038
摘要： PROBLEM TO BE SOLVED: To solve the problem that an optimum recording power determining area is excessively consumed since random data are required to record to a higher-order recording layer, at least equivalently to an optimum recording power determining area in a lower-order recording layer, so as to find optimum recording power in the lower-order recording layer relative to the higher-order recording layer after the random data are recorded to the higher-order recording layer. SOLUTION: When the recording conditions of a lower-order recording layer corresponding to an area recorded to a higher-order recording layer are determined, recording power is corrected with a variation in transparency between a higher-order recording layer to which recording is made and a higher-order recording layer to which recording is not made to easily determine the recording conditions of the lower-order recording layer corresponding to the area recorded to the higher-order recording layer. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题为了解决由于需要随机数据记录到高阶记录层而使最佳记录功率确定区域过度消耗的问题，至少等同于较低级记录层中的最佳记录功率确定区域以便在将随机数据记录到高阶记录层之后，相对于较高级记录层，在低级记录层中找到最佳记录功率。解决方案：当确定对应于记录到高阶记录层的区域的低级记录层的记录条件时，记录功率被校正，其中记录的高级记录层之间的透明度变化并且不进行记录的高阶记录层容易地确定与记录到高级记录层的区域相对应的低级记录层的记录条件。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2006331588A Optical disk recording method and optical disk device 审中-公开
标题翻译：光盘记录方法和光盘设备
公开(公告)号：JP2006331588A
公开(公告)日：2006-12-07
申请号：JP2005156579
申请日：2005-05-30
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： ISHII TOSHIKI , TODA TAKESHI
IPC分类号： G11B7/0045 , G11B7/125
CPC分类号： G11B7/126 , G11B7/00456 , G11B7/0079
摘要： PROBLEM TO BE SOLVED: To control recording power by matching a write strategy with a recording linear velocity change in a zone to secure quality when a plurality of zones are provided in the CAV recording of an optical disk. SOLUTION: The reliability of information is secured by optimizing a write strategy (pulse timing and power ratio) based on the highest recording linear velocity of each zone, and controlling power setting in each zone so that a relation between a recording linear velocity V and recording power Po is Po=CV (C is a coefficient obtained from a relation between Po and V at a zone end point). COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过使写入策略与区域中的记录线速度变化匹配来控制记录功率，以在光盘的CAV记录中提供多个区域时确保质量。解决方案：通过基于每个区域的最高记录线速度优化写入策略（脉冲定时和功率比）以及控制每个区域中的功率设置来确保信息的可靠性，使得记录线速度 V和记录功率Po是Po = CV（C是从区域端点处的Po和V之间的关系获得的系数）。版权所有（C）2007，JPO＆INPIT

9. 发明专利

JP2009026427A Optical disk device and its control method 审中-公开
标题翻译：光盘设备及其控制方法
公开(公告)号：JP2009026427A
公开(公告)日：2009-02-05
申请号：JP2007191325
申请日：2007-07-23
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： TODA TAKESHI , ISHII TOSHIKI
IPC分类号： G11B7/09 , G11B7/005
CPC分类号： G11B7/0945 , G11B7/0908
摘要： PROBLEM TO BE SOLVED: To provide an optical disk device and its control method, wherein information can be recorded to and/or reproduced from an optical disk, with high reliability.
SOLUTION: A position of an objective lens at which amplitude of a reproduced signal in a recording mark having the shortest mark length becomes the maximum is detected, the position is set as a reference position in focus control of the objective lens for the optical disk. Also a position of the objective lens at which a multiplication result of resonance and modulation degree becomes the maximum is detected, the position is set to as a reference position in focus control of the objective lens for the optical disk.
COPYRIGHT: (C)2009,JPO&INPIT

10. 发明专利

JP2009009656A Optical disk drive and information recording method 审中-公开
标题翻译：光盘驱动器和信息记录方法
公开(公告)号：JP2009009656A
公开(公告)日：2009-01-15
申请号：JP2007171374
申请日：2007-06-29
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： ISHII TOSHIKI , TODA TAKESHI
IPC分类号： G11B7/0045 , G11B7/125
摘要： PROBLEM TO BE SOLVED: To provide an optical disk drive and information recording method which enhances recording quality, by effectively optimizing recording power and recording pulse timing with respect to a temperature change, only when needed by referring to a past optimization history. SOLUTION: A disk ID, ambient temperature of laser in recording strategy optimization processing and optimized recording strategy are stored in a storage means, and the ambient temperature of the laser is compared with the history of the storage means, thereby determining whether to optimize the recording strategy or whether to employ the recording strategy of the history. COPYRIGHT: (C)2009,JPO&INPIT

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