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1. 发明专利

JP2007334992A Device and method for reproducing optical disk 审中-公开
标题翻译：用于复制光盘的设备和方法
公开(公告)号：JP2007334992A
公开(公告)日：2007-12-27
申请号：JP2006165472
申请日：2006-06-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKAMURA YUUKAI , IKEDA MASAKAZU , TAKEUCHI TOSHIFUMI
IPC分类号： G11B20/10 , G11B7/004 , G11B19/12
CPC分类号： G11B19/125 , G11B20/1426 , G11B2020/1457
摘要： PROBLEM TO BE SOLVED: To provide a device for reproducing an optical disk, which reproduces two types of optical disks having physically same characteristics but different modulation systems.
SOLUTION: The device for reproducing an optical disk is provided with a circuit for detecting a difference in modulation systems between playback signals, and a circuit for determining a modulation system from the difference, so that the modulation system is decided. Thus, two types of optical disks having physically same characteristics but different modulation systems are reproduced.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于再现光盘的装置，其再现具有物理相同特性但不同调制系统的两种类型的光盘。解决方案：用于再现光盘的装置设置有用于检测重放信号之间的调制系统的差异的电路和用于根据差异确定调制系统的电路，从而确定调制系统。因此，再现具有物理相同特性但不同调制系统的两种类型的光盘。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2005141341A Memory control unit and memory control method 审中-公开
标题翻译：存储器控制单元和存储器控制方法
公开(公告)号：JP2005141341A
公开(公告)日：2005-06-02
申请号：JP2003375092
申请日：2003-11-05
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 MASAKAZU , HIRABAYASHI MASAYUKI
IPC分类号： G06F12/16 , G06F3/06 , G11B20/10 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To obtain a memory control unit facilitating cache management of data stored in a memory. SOLUTION: The cache management of processing data in the memory can be performed easily by controlling using an upper-level counter incrementing each time a block counter exceeds a number storable in the memory, in addition to the block counter incrementing at the time one block is completed in each processing means. Also, with the provision of an error correction result decision circuit, control signal generation for permitting the operation of each processing is masked when error correction cannot be performed. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：获得促进存储在存储器中的数据的高速缓存管理的存储器控制单元。解决方案：除了块计数器递增之外，还可以通过控制每次块计数器超过存储器中可存储的数量的上位计数器递增来容易地执行存储器中的处理数据的高速缓存管理在每个处理装置中完成一个块。此外，通过提供误差校正结果判定电路，当不能执行纠错时，屏蔽用于允许每个处理的操作的控制信号生成。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2010198663A Address generating and detecting method and reproducing and recording apparatus 有权
标题翻译：地址生成和检测方法和再现和记录装置
公开(公告)号：JP2010198663A
公开(公告)日：2010-09-09
申请号：JP2009040137
申请日：2009-02-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IKEDA MASAKAZU , FUKUSHIMA AKIO , HIROSE KOICHI
IPC分类号： G11B20/12 , G11B7/007 , G11B20/10
CPC分类号： G11B20/1217 , G11B2007/0013 , G11B2020/1221 , G11B2020/1227 , G11B2020/1232 , G11B2020/1239 , G11B2020/1267 , G11B2020/1268 , G11B2020/1278 , G11B2020/1292 , G11B2220/235 , G11B2220/2537
摘要： PROBLEM TO BE SOLVED: To address detection for two kinds of discs which are equal in structure of addresses embedded in wobbles but different in bit allocation of addresses.
SOLUTION: Recording capacity per layer is detected from a disk, and bit allocation of wobble addresses in a conventional optical disk and bit allocation in a high-density optical disk are selectively controlled to detect physical position addresses on the disk.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：针对嵌入在摆动中但地址的位分配不同的地址的结构相同的两种盘的检测。解决方案：从盘检测每层的记录容量，并选择性地控制常规光盘中的摆动地址的位分配和高密度光盘中的位分配以检测盘上的物理位置地址。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2010182378A Multilayer optical disk, optical disk recording and playback method 审中-公开
标题翻译：多层光盘，光盘记录和回放方法
公开(公告)号：JP2010182378A
公开(公告)日：2010-08-19
申请号：JP2009025506
申请日：2009-02-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IKEDA MASAKAZU
IPC分类号： G11B20/12 , G11B7/007 , G11B7/24
摘要： PROBLEM TO BE SOLVED: To obtain an optical disk having a spare region arranged also in an intermediate area. SOLUTION: An intermediate spare region is arranged in the intermediate area of a user data region in addition to an innermost spare region and an outermost spare region which are arranged at the innermost periphery and the outermost periphery of the user data region of a multilayer disk, respectively. Since a spare region of an arbitrary recording layer and an arbitrary recording position closer to a defective sector can be selected when the defective sector is alternated, access performance upon alternation can be enhanced. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：获得具有也布置在中间区域中的备用区域的光盘。解决方案：在用户数据区域的中间区域中还设置有中间备用区域，该中间备用区域除了布置在用户数据区域的用户数据区域的最内周和最外周的最内部备用区域和最外部备用区域之外多层磁盘。由于当缺陷扇区交替时可以选择任意记录层的备用区域和更靠近缺陷扇区的任意记录位置，所以可以提高交替时的访问性能。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2004303118A Memory control device and method 审中-公开
公开(公告)号：JP2004303118A
公开(公告)日：2004-10-28
申请号：JP2003097581
申请日：2003-04-01
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 MASAKAZU
IPC分类号： G06F12/00 , G06F3/06 , G11B20/10
摘要： PROBLEM TO BE SOLVED: To provide a memory control device and a memory control method using an efficient access control in the input and output control of data to a memory shared by a plurality of processing circuits. SOLUTION: This memory control device is provided with a means for detecting the continuity of access permitting situations with respect to a memory access request to control access permission in an independent priority order in continuous access time and under discontinuous access conditions. Thus, access rights to memory access are easily and equally distributed in a lower priority order, thereby realizing the efficient memory access control. COPYRIGHT: (C)2005,JPO&NCIPI

6. 发明专利

JP2012212501A Information recording medium, address generation and detection method, and reproducing and recording apparatuses 审中-公开
标题翻译：信息记录介质，地址生成和检测方法以及再现和记录装置
公开(公告)号：JP2012212501A
公开(公告)日：2012-11-01
申请号：JP2012121490
申请日：2012-05-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUKUSHIMA AKIO , IKEDA MASAKAZU , HIROSE KOICHI , NISHIMURA KOICHIRO
IPC分类号： G11B20/12 , G11B20/10
摘要： PROBLEM TO BE SOLVED: To obtain an extension address without changing the number of bits of an address embedded in wobbles.SOLUTION: Address information is embedded by applying encoding processing to a part or all of a wobble address. When reproducing the address information, original address information is obtained by applying decoding processing and restoring the embedded information.
摘要翻译：要解决的问题：获取扩展地址而不改变嵌入在摆动中的地址的位数。解决方案：通过对摆动地址的一部分或全部应用编码处理来嵌入地址信息。当再现地址信息时，通过应用解码处理和恢复嵌入信息来获得原始地址信息。版权所有（C）2013，JPO＆INPIT

7. 发明专利

JP2010205373A Information recording medium, recording method, recording device, reproducing method, and reproducing device 审中-公开
标题翻译：信息记录介质，记录方法，记录装置，再现方法和再现装置
公开(公告)号：JP2010205373A
公开(公告)日：2010-09-16
申请号：JP2009052821
申请日：2009-03-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NISHIMURA KOICHIRO , IKEDA MASAKAZU , NAGAI YUTAKA
IPC分类号： G11B20/12 , G06F3/06 , G11B20/10 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To maintain conventional capacity of a defect list to achieve compatibility with a conventional device and efficiency of start process even when a defect cluster is increased by increase of the capacity when the capacity is tried to be further increased by multi-layer technique.
SOLUTION: Even when more defect alternative processing is required due to increase of recording capacity, as a number of successive clusters is shown using a portion of a status or a sector address display part for alternative of the successive clusters, alternative processing can be instructed using one DFL entry, so that it is possible to instruct more defect alternatives using less DFL entry while maintaining high compatibility with the conventional device and to prevent increase of the capacity of the defect list.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了保持缺陷列表的常规容量以实现与常规设备的兼容性以及启动处理的效率，即使当通过增加容量来增加容量时，通过增加容量来增加缺陷簇，当容量被尝试进一步增加时多层技术。解决方案：即使由于记录容量的增加而需要更多的缺陷替代处理，由于使用一部分状态或扇区地址显示部分来显示连续簇的数量，以替代连续的簇，替代处理可以使用一个DFL条目进行指示，从而可以使用较少的DFL条目来指示更多的缺陷替代品，同时保持与常规设备的高兼容性并防止缺陷列表容量的增加。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2010186507A Recording medium, address generating and detection method, and reproduction and recording apparatus 有权
标题翻译：记录介质，地址生成和检测方法以及生成和记录设备
公开(公告)号：JP2010186507A
公开(公告)日：2010-08-26
申请号：JP2009029298
申请日：2009-02-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IKEDA MASAKAZU , NISHIMURA KOICHIRO , NAGAI YUTAKA
IPC分类号： G11B20/12 , G11B20/10
CPC分类号： G11B20/1217 , G11B27/24 , G11B2020/1221 , G11B2020/1227 , G11B2020/1232 , G11B2020/1239 , G11B2020/1267 , G11B2020/1268 , G11B2020/1278 , G11B2020/1292 , G11B2220/235 , G11B2220/2537
摘要： PROBLEM TO BE SOLVED: To obtain an extended address without changing the number of bits of the address embedded in the wobble.
SOLUTION: The virtual bits not recorded in the disc and expressed by the difference of the rule or the presence or absence of the information embedded in a part or the whole of the wobble address are generated.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：获取扩展地址而不改变嵌入在摆动中的地址的位数。解决方案：生成未记录在光盘中并由规则的差异表示的虚拟位或嵌入在部分或全部摆动地址中的信息的存在或不存在。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2009054064A Digital signal reproducing device and digital signal reproducing method 审中-公开
标题翻译：数字信号再现设备和数字信号再现方法
公开(公告)号：JP2009054064A
公开(公告)日：2009-03-12
申请号：JP2007222021
申请日：2007-08-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGAI YUTAKA , IKEDA MASAKAZU , KAWAMAE OSAMU
IPC分类号： G06F21/24 , G06F21/22 , G11B20/10 , H04L9/32
摘要： PROBLEM TO BE SOLVED: To enhance safety of copyright protection by increasing the encryption intensity using an AES with a key data length of 128 bits as an AACS in an optical disk reproducing device, and to eliminate the risk of breakage of the cipher by allowing analysis by rewriting a control program of an optical disk drive to an illegal one. SOLUTION: A program for update is stored in a temporary storage device for disk data reproduction, and a sign is decoded that is read from the temporary storage device to a cipher decoding circuit, encrypted, and added to the update program. When the decoded sign is determined to be normal, the update program on the temporary storage device is copied to a flash ROM 113 where a control program of a CPU 114 is stored. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了通过在光盘再现装置中使用密钥数据长度为128位的AES作为AACS增加加密强度来提高版权保护的安全性，并且消除密码的破坏风险通过将光盘驱动器的控制程序重写为非法的来进行分析。解决方案：用于更新的程序存储在用于磁盘数据再现的临时存储装置中，并且将从临时存储装置读取的符号解码为加密解码电路，并将其加到更新程序中。当解码符号被确定为正常时，临时存储设备上的更新程序被复制到存储CPU 114的控制程序的闪存ROM 113中。版权所有（C）2009，JPO＆INPIT

10. 发明专利

JP2008299887A Data reproducing device 有权
标题翻译：数据复制设备
公开(公告)号：JP2008299887A
公开(公告)日：2008-12-11
申请号：JP2007141272
申请日：2007-05-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IKEDA MASAKAZU , NISHIMURA KOICHIRO
IPC分类号： G11B20/14
摘要： PROBLEM TO BE SOLVED: To obtain a data reproducing device for reducing power consumption, and also reducing design burden of analog components and a digital synchronous circuit, and development cost by suppressing the oscillation highest frequency during high-speed reproduction.
SOLUTION: The data reproducing device is composed of a data processing circuit which has a circuit for converting sample data during a channel clock operation into parallel data, and a circuit for interpolating missing data during half clock operation and generating the data, switches data to be outputted and always operates in a frequency of a half of a channel clock so as to share circuits.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了获得用于降低功耗的数据再现装置，并且还降低了模拟部件和数字同步电路的设计负担，并且通过在高速再现期间抑制振荡最高频率来获得开发成本。解决方案：数据再现装置由数据处理电路组成，该数据处理电路具有用于在通道时钟操作期间将采样数据转换为并行数据的电路，以及用于在半时钟操作期间内插丢失数据并产生数据的电路，开关要输出的数据总是以通道时钟的一半的频率工作，以便共享电路。版权所有（C）2009，JPO＆INPIT

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