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1. 发明专利

JP2011014213A Method of recording multilayer optical disk 有权
标题翻译：记录多层光盘的方法
公开(公告)号：JP2011014213A
公开(公告)日：2011-01-20
申请号：JP2009159535
申请日：2009-07-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIYAMOTO JIICHI , WATANABE KOICHI , NAGAI YUTAKA , NISHIMURA KOICHIRO , YASUKAWA TAKAKIYO
IPC分类号： G11B7/0045 , G11B7/007
CPC分类号： G11B7/00736 , G11B7/1267 , G11B7/24038 , G11B2007/0013
摘要： PROBLEM TO BE SOLVED: To provide a method of recording a multilayer optical disk for performing recording while securing sufficient test areas without reducing user data areas, and while suitably controlling the power of laser beam irradiated onto each of the layers.SOLUTION: The method uses an optical disk which has at least a first recording layer and a second recording layer located on the side nearer to the light incident surface than the first recording layer, and which respectively has a first test area configured of a plurality of segments in the first recording layer and a second test area configured of a plurality of segments in the second recording layer. There is defined beforehand a predetermined radial distance L corresponding to relative precision of radial positions between the plurality of layers and the optical spot diameter. If an arbitrary segment in the second test area is already test-recorded, a segment in the first test area, the radial distance from which to the recorded test area in the second test area is within the range of the predetermined radial distance L, is set as a segment in which the test recording is not to be performed. Thereby, even if the radial positions of the test areas are overlapped with each other, the learning of optical power is precisely performed.
摘要翻译：要解决的问题：提供一种记录用于执行记录的多层光盘的方法，同时确保足够的测试区域而不减少用户数据区域，并且同时适当地控制照射到每个层上的激光束的功率。解决方案：该方法使用具有至少第一记录层和位于比第一记录层更靠近光入射面的一侧的第二记录层的光盘，并且分别具有由第一记录中的多个段构成的第一测试区层和由第二记录层中的多个段构成的第二测试区。预先确定对应于多个层之间的径向位置与光点直径的相对精度的预定径向距离L. 如果第二测试区域中的任意段已经被测试记录，则第一测试区域中的第二测试区域中记录的测试区域的径向距离在预定的径向距离L的范围内的段是设置为不执行测试记录的段。因此，即使测试区域的径向位置彼此重叠，也能够精确地进行光功率的学习。

2. 发明专利

JP2009224021A Recording power adjustment method and optical recording/reproducing device 有权
标题翻译：记录功率调整方法和光学记录/再现设备
公开(公告)号：JP2009224021A
公开(公告)日：2009-10-01
申请号：JP2009128418
申请日：2009-05-28
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： ETO SOICHIRO , WATANABE KOICHI , KUROKAWA TAKAHIRO
IPC分类号： G11B7/0045 , G11B7/125
摘要： PROBLEM TO BE SOLVED: To provide a recording power adjustment method and an optical recording/reproducing device which highly accurately set optimal recording power. SOLUTION: Test write is carried out by using a plurality of kinds of recording power Pwm to calculate a modulation degree Mm corresponding to each recording power Pwm. An evaluation value Smn=Mm×(Pwm-Pcn) is calculated by using a plurality of kinds of recording power correction items Pcn to determine Pcn when correction recording power (Pwm-Pcn) and an evaluation value Smn are most close to linearity as an optimal recording power correction item Pc0. Correction recording power Pth0 is obtained in which modulation degree becomes zero, in other words, an evaluation value Sm0 becomes zero when relationship characteristics between the correction recording power (Pwm-Pc0) and the evaluation value Sm0 in Pc0 are linearly approximated. A recording power threshold value Pth=Pth0+Pc0 is calculated by using the Pth0 and the optimal recording power correction item Pc0, and optimal recording power is obtained by performing predetermined calculation on the Pth. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供高精度地设定最佳记录功率的记录功率调节方法和光学记录/再现装置。解决方案：通过使用多种记录功率Pwm来执行测试写入，以计算对应于每个记录功率Pwm的调制度Mm。通过使用多种记录功率校正项目Pcn计算评价值Smn = Mm×（Pwm-Pcn），以便当校正记录功率（Pwm-Pcn）和评估值Smn最接近于线性时确定Pcn，作为最佳记录功率校正项目Pc0。获得校正记录功率Pth0，其中调制度变为零，换句话说，当校正记录功率（Pwm-Pc0）和Pc0中的评估值Sm0之间的关系特性被线性近似时，评估值Sm0变为零。通过使用Pth0和最佳记录功率校正项Pc0来计算记录功率阈值Pth = Pth0 + Pc0，并且通过在Pth上执行预定计算来获得最佳记录功率。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2009048699A Laser generator, its control method, and optical disk device 审中-公开
标题翻译：激光发生器，其控制方法和光盘设备
公开(公告)号：JP2009048699A
公开(公告)日：2009-03-05
申请号：JP2007214124
申请日：2007-08-20
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： IKEDA NAOHITO , WATANABE KOICHI
IPC分类号： G11B7/125 , G11B7/0045
CPC分类号： H01S5/06804 , G11B7/1263 , H01S5/0428
摘要： PROBLEM TO BE SOLVED: To provide a laser generator capable of improving recording quality, its control method, and an optical disk device. SOLUTION: The laser generator is provided with a semiconductor laser diode for generating a laser, and a semiconductor laser diode driving part for supplying a driving pulse to the semiconductor laser diode and flashing and driving a semiconductor laser according to the driving pulse. In the laser generator, impedance between the semiconductor laser diode and the semiconductor laser diode driving part is controlled to an appropriate state. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供能够提高记录质量的激光发生器，其控制方法和光盘装置。解决方案：激光发生器设置有用于产生激光的半导体激光二极管和用于向半导体激光二极管提供驱动脉冲并根据驱动脉冲闪烁和驱动半导体激光器的半导体激光二极管驱动部分。在激光发生器中，将半导体激光二极管与半导体激光二极管驱动部之间的阻抗控制在适当的状态。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2007335044A Information recording device 审中-公开
标题翻译：信息记录装置
公开(公告)号：JP2007335044A
公开(公告)日：2007-12-27
申请号：JP2006168778
申请日：2006-06-19
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： SAGA HIDEKI , WATANABE KOICHI
IPC分类号： G11B7/0045 , G11B7/125
CPC分类号： G11B7/00456 , G11B7/0062 , G11B7/126
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive information recording device of high speed and large capacity by making driving of a recording energy generation source easy, while performing high speed forming of highly accurate mark by securing a sufficient cooling time in a recording medium. SOLUTION: During information recording, (p) is defined as integer constant for the mark having length of natural number (k) times of detection window width referring to mark length in a recording code column, the recording code column is discriminated according to quotient and surplus in which k+p is divided by the integer constant of 2 or more, and the energy generating means is driven according to different procedure based on the discriminated result. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过使记录能量产生源的驱动变得容易，通过确保足够的冷却时间在记录中进行高精度标记的高速成形，来提供高速度和大容量的廉价的信息记录装置中。解决方案：在信息记录期间，（p）被定义为在记录代码列中具有参考标记长度的检测窗口宽度的自然数（k）倍的标记的标记的整数常数，记录代码列根据以及k + p除以2或更大的整数常数的商和剩余量，并且根据鉴别结果根据不同的过程来驱动能量产生装置。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2006012258A Optical recording device 有权
标题翻译：光学记录装置
公开(公告)号：JP2006012258A
公开(公告)日：2006-01-12
申请号：JP2004185834
申请日：2004-06-24
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： WATANABE KOICHI , MINEMURA HIROYUKI
IPC分类号： G11B7/125
摘要： PROBLEM TO BE SOLVED: To drive two or more LDs different in wavelength by one driver circuit in order to record information on different kinds of optical disks adapted to infrared, red, and blue LDs by one device. SOLUTION: Resistance components and capacity components of an LD 1 and an LD 2 are supplemented by an additional resistance R2A and an additional capacity C2A, and the load of a driver circuit is fixed in the LD 1 side and the LD 2 side to perform driving. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过一个驱动器电路驱动两个或更多个不同波长的LD，以便通过一个设备记录适用于红外线，红色和蓝色LD的不同种类的光盘上的信息。解决方案：LD1和LD2的电阻分量和容量分量由附加电阻R2A和额外容量C2A补充，驱动电路的负载固定在LD 1侧和LD 2侧开车。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2004287071A Optical transmitter 有权
公开(公告)号：JP2004287071A
公开(公告)日：2004-10-14
申请号：JP2003078813
申请日：2003-03-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WATANABE KOICHI , KIKUCHI NOBUHIKO
IPC分类号： G02F1/015 , G02F1/01 , H04B10/00 , H04B10/40 , H04B10/50 , H04B10/516 , H04B10/60 , H04B10/61 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/142 , H04B10/152 , H04B10/26 , H04B10/28
摘要： PROBLEM TO BE SOLVED: To form an RZ (Return to Zero) optical signal, an intensity multi-valued optical signal and a phase multi-valued optical signal in a simple configuration and in a miniaturized shape.
SOLUTION: A semiconductor substrate 31 with which two optical modulators 11 and 12 are integrated in series is mounted on a semiconductor substrate 32 with which driving circuits 21 and 22 are integrated. The driving circuits 21 and 22 have emitter follower circuits in their output stages.
COPYRIGHT: (C)2005,JPO&NCIPI

7. 发明专利

JP2010146673A Optical information reproducing method 审中-公开
标题翻译：光信息再现方法
公开(公告)号：JP2010146673A
公开(公告)日：2010-07-01
申请号：JP2008324919
申请日：2008-12-22
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： WATANABE KOICHI , SHIOZAWA MANABU
IPC分类号： G11B7/125 , G11B7/005
CPC分类号： G11B7/126
摘要： PROBLEM TO BE SOLVED: To provide an optical information reproducing device or an optical information reproducing method capable of stably controlling laser reproducing power of laser with a realistic circuit structure even when there is a variance in laser characteristics or a fluctuation factor such as temperature characteristics. SOLUTION: HF amplitude is changed with respect to a laser resistance, a differential resistance value, or a temperature. A potential of a laser driver is measured to calculate a resistance or a differential resistance value. A temperature is measured to estimate a resistance value based on a conversion table of a temperature and a resistance or a differential resistance value. A register is provided for storing an amplitude value of a high-frequency current, a frequency of the high-frequency current, an amplitude value of a laser driving current or the like. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种光信息再现装置或光信息再现方法，其能够以逼真的电路结构稳定地控制激光的再现功率，即使当激光特性的变化或诸如温度特性。解决方案：HF幅度相对于激光电阻，差分电阻值或温度而改变。测量激光驱动器的电位以计算电阻或差分电阻值。测量温度以基于温度和电阻或差分电阻值的转换表来估计电阻值。提供了用于存储高频电流的振幅值，高频电流的频率，激光驱动电流的振幅值等的寄存器。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2008152832A Optical disk recording method and optical disk drive 有权
标题翻译：光盘记录方法和光盘驱动
公开(公告)号：JP2008152832A
公开(公告)日：2008-07-03
申请号：JP2006337782
申请日：2006-12-15
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： WATANABE KOICHI
IPC分类号： G11B7/0045 , G11B7/125
CPC分类号： G11B7/126 , G11B7/1267
摘要： PROBLEM TO BE SOLVED: To raise the reliability of recorded data by preventing the deterioration of OPC (Optimum Power Control) accuracy due to change of temperature. SOLUTION: In OPC using a modulation depth, OPC is carried out by changing a multiplication factor required for calculation. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过防止由于温度变化导致的OPC（最佳功率控制）精度的劣化，提高记录数据的可靠性。解决方案：在使用调制深度的OPC中，通过改变计算所需的乘法因子来执行OPC。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2007334922A Recording power adjusting method, and optical recording and reproducing device 有权
标题翻译：记录功率调节方法和光学记录和再现装置
公开(公告)号：JP2007334922A
公开(公告)日：2007-12-27
申请号：JP2006161784
申请日：2006-06-12
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： ETO SOICHIRO , WATANABE KOICHI , KUROKAWA TAKAHIRO
IPC分类号： G11B7/0045 , G11B7/125
CPC分类号： G11B7/0062 , G11B7/1267
摘要： PROBLEM TO BE SOLVED: To provide a recording power adjusting method capable of highly precisely setting the optimum recording power, and to provide an optical recording and reproducing device. SOLUTION: A trial writing is performed using a plurality of kinds of recording power Pwm, modulation degree Mm corresponding to each recording power Pwm are calculated. An evaluation value Smn=Mnm(Pwm-Pcn) is calculated using a plurality of kinds of recording power correction item Pcn, Pcn when correction recording power (Pwm-Pcn) and an evaluation value Smn are close most to a straight line state is decided as the optimum recording power correction item Pc0. Correction recording power Pth0 in which modulation degree becomes 0, that is, the evaluation value Sm becomes 0 when a relation property of correction recording power (Pwm-Pco) and the evaluation value Sm in Pc0 is assumed to an approximate straight line is obtained. A recording power threshold value Pth=Pth0+Pc0 is calculated using Pth0 and the optimum recording power correction item Pc0, and Optimum recording power Popt is obtained by performing the prescribed operation for Pth. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够高精度地设定最佳记录功率的记录功率调节方法，并提供光学记录和再现装置。解决方案：使用多种记录功率Pwm进行试写，计算与各记录功率Pwm对应的调制度Mm。当校正记录功率（Pwm-Pcn）和评估值Smn最接近直线状态时，使用多种记录功率校正项目Pcn，Pcn来计算评估值Smn = Mnm（Pwm-Pcn）作为最佳记录功率校正项目Pc0。当校正记录功率（Pwm-Pco）和Pc0中的评估值Sm的关系性质被假定为近似的直线时，获得调制度变为0的校正记录功率Pth0，即评估值Sm变为0。使用Pth0和最佳记录功率校正项目Pc0计算记录功率阈值Pth = Pth0 + Pc0，并且通过对Pth执行规定的操作来获得最佳记录功率Popt。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2007323702A Recording method and optical disk device 有权
标题翻译：记录方法和光盘设备
公开(公告)号：JP2007323702A
公开(公告)日：2007-12-13
申请号：JP2006150425
申请日：2006-05-30
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： WATANABE KOICHI , MINEMURA HIROYUKI , KOBAYASHI MITSUKI , ODA KAZUHIRO
IPC分类号： G11B7/0045 , G11B7/007 , G11B7/125
CPC分类号： G11B7/1267 , G11B2007/0013
摘要： PROBLEM TO BE SOLVED: To improve reliability of recording data by preventing reduction of OPC accuracy due to influence of interference between layers in an optical disk device in which recording can be performed for a multi-layer optical disk. SOLUTION: Offset caused by recording states or the like of a device, a disk, and other layers is corrected by referring to relation of asymmetry and signal modulation degree measured using a reference drive device, and OPC is performed. COPYRIGHT: (C)2008,JPO&INPIT

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