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1. 发明专利

JP2011070767A Digital signal recording method and information recording medium 有权
标题翻译：数字信号记录方法和信息记录介质
公开(公告)号：JP2011070767A
公开(公告)日：2011-04-07
申请号：JP2010265903
申请日：2010-11-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRAYAMA HIROSHI
IPC分类号： G11B20/12 , G11B20/14
摘要： PROBLEM TO BE SOLVED: To easily avoid false detection of a synchronization frame position in a sector and error propagation due to the false detection of the frame position. SOLUTION: When, for at least a plurality of frames included in a sector, one sector is divided into the first, second, ..., and n-th areas by continuously allocating the same first, second, ..., and n-th synchronization signals (n is positive integer) for every k frames (k is positive integer), an intersymbol distance of the bit patterns given to the first, second, ..., and n-th synchronization signals for every k frames is 2 or more. Otherwise, bit patterns with different number of inverted bits are given. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了容易地避免扇区中的同步帧位置的错误检测和由于帧位置的错误检测而导致的误差传播。解决方案：当对于包括在扇区中的至少多个帧时，通过连续分配相同的第一，第二，...，第一，第二，...和第n个区域，，并且对于每k个帧（k为正整数），n个同步信号（n为正整数），对于每个k帧给出的第一，第二，...和第n同步信号的位模式的符号间距离 k帧为2以上。否则，给出具有不同数目的反转位的位模式。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2007234174A Optical disk drive and method of reproducing same 审中-公开
标题翻译：光盘驱动器及其再生方法
公开(公告)号：JP2007234174A
公开(公告)日：2007-09-13
申请号：JP2006057087
申请日：2006-03-03
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： HIRAYAMA HIROSHI
IPC分类号： G11B20/14 , G11B7/005 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To provide an optical disk reproducing device which ensures reproducing reliability for a high-density optical disk, even in a degradation state due to the degradation of SNR (Signal to Noise Ratio) or the defect on a disk, etc.
SOLUTION: A optical disk drive includes a first decode means which decodes a first code sequence based on a Viterbi decode algorithm, an equalizer which adds high-frequency region components extracted from reproduced signals after amplitude limitation and performs amplitude emphasis, and a second decode means which decodes a second code sequence based on an amplitude value of the equalizer output, and chooses a code sequence for performing data decode processing from the first or second code sequences.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种确保高密度光盘再现可靠性的光盘再现装置，即使由于SNR（信噪比）的劣化或盘的缺陷导致的劣化状态等等。解决方案：光盘驱动器包括：第一解码装置，其基于维特比解码算法对第一代码序列进行解码;均衡器，其添加从振幅限制之后的再现信号中提取的高频区域分量，并执行幅度强调以及第二解码装置，其基于均衡器输出的幅度值对第二代码序列进行解码，并且从第一或第二代码序列中选择用于执行数据解码处理的代码序列。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2006246507A Recording recording medium device for 有权
标题翻译：记录录音中间设备
公开(公告)号：JP2006246507A
公开(公告)日：2006-09-14
申请号：JP2006101401
申请日：2006-04-03
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRAYAMA HIROSHI
IPC分类号： H04N5/92 , G11B20/10 , H04N5/76 , H04N7/173 , H04N21/433 , H04N21/435
摘要： PROBLEM TO BE SOLVED: To record a packet to be recorded in a disc recording medium, by separating and multiplexing a plurality of kinds of packets to a multiple stream, whereto the information of a packet unit is subjected to time division and multiplex and transmitted, and to extract only the target packet, with respect to reproduction signal from a disc recording medium in reproduction. SOLUTION: The device has a means of detecting the target packet ID, with respect to at least a multiplex stream and controlling write of the detected packet itself to a storage means; a storage means of temporarily storing the detected packet; a means of applying information to a record packet so that it matches with the data amount to be stored in a record sector on a disc recording medium in recording and detecting the information in reproduction and outputting a packet alone; a means of converting it into a digital signal suitable for record of an optical disc in recording and converting it into digital information, prior to recording in reproduction; and a means of controlling a recording reproducing device as a whole and performing recording and reproduction control to the disc recording medium. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了记录要记录在盘记录介质中的分组，通过将多种分组分离多路复用到多个流，对分组单元的信息进行时分复用并且在再现时相对于来自盘记录介质的再现信号发送并且仅提取目标分组。解决方案：该设备具有相对于至少多路复用流检测目标分组ID并且将检测到的分组本身的写入控制到存储装置的手段; 存储装置，临时存储检测到的分组; 将信息应用于记录包，使其与要记录在盘记录介质上的记录扇区中的数据量相匹配，以便在再现中记录和检测信息并仅输出一个包; 在记录再现之前将其转换为适合于记录光盘的数字信号并将其转换成数字信息的装置; 以及作为整体控制记录再现装置并对盘记录介质执行记录和再现控制的手段。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2005259272A Optical disk recording method and optical disk recording and reproducing apparatus 审中-公开
标题翻译：光盘记录方法和光盘记录和再现装置
公开(公告)号：JP2005259272A
公开(公告)日：2005-09-22
申请号：JP2004069982
申请日：2004-03-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRAYAMA HIROSHI
IPC分类号： G11B20/10 , G11B7/0045
摘要： PROBLEM TO BE SOLVED: To provide an optical disk recording method and an optical disk recording and reproducing apparatus which is optimum for an optical disk having a plurality of recording layers, in which access from a disk side plane, forming, and reading of a recording mark can be performed.
SOLUTION: The optical disk recording method successively performs a first step in which recording information is recorded to a first data area terminal in a first recording layer in an optical disk; a second step in which recording information is recorded from a second data area head in a second recording layer; and a third step in which dummy blocks of N, M pieces (N, M are positive integer, 0
摘要翻译：要解决的问题：提供一种光盘记录方法和光盘记录和再现装置，其对于具有多个记录层的光盘是最佳的，其中从盘侧平面进入，形成和读取可以执行记录标记。解决方案：光盘记录方法依次执行第一步骤，其中记录信息被记录在光盘中的第一记录层中的第一数据区终端; 第二步骤，其中从第二记录层中的第二数据区域头记录记录信息; 以及第三步骤，其中记录包括独立于作为第一和第二虚拟区域的记录信息的信息的N，M个（N，M为正整数，0

5. 发明专利

JP2012099214A Combination type optical disk medium and method for reproducing the same, and optical disk device 审中-公开
标题翻译：组合型光盘介质及其再生方法及光盘装置
公开(公告)号：JP2012099214A
公开(公告)日：2012-05-24
申请号：JP2011258431
申请日：2011-11-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRAYAMA HIROSHI
IPC分类号： G11B7/007 , G11B7/005 , G11B7/24 , G11B20/12
摘要： PROBLEM TO BE SOLVED: To provide a combination type optical disk medium having recording layers of different formats, which configures a single volume space continued from respective recording layers, and can control access and reproduction to/from the space.SOLUTION: In the combination type optical disk medium including at least first and second recording layers different recording densities, the optical disk medium forms each of first and second volume spaces in each of the first and second recording layers, each of the respective volume spaces include identification information identifying the start or the end of the volume spaces, configuration information of a file and a directory, and a storage region of data, and one volume space records the identification information in the other volume space.
摘要翻译：要解决的问题：提供一种具有不同格式的记录层的组合型光盘介质，其配置从相应记录层继续的单个体积空间，并且可以控制对该空间的访问和再现。解决方案：在包括不同记录密度的至少第一和第二记录层的组合型光盘介质中，光盘介质在第一和第二记录层中的每一个中形成第一和第二容积空间中的每一个，卷空间包括识别卷空间的开始或结束的标识信息，文件和目录的配置信息以及数据的存储区域，并且一个卷空间将标识信息记录在另一个卷空间中。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2011181180A Recording method and reproducing method 审中-公开
标题翻译：记录方法和再现方法
公开(公告)号：JP2011181180A
公开(公告)日：2011-09-15
申请号：JP2011135883
申请日：2011-06-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRAYAMA HIROSHI
IPC分类号： G11B20/14 , G11B20/10 , G11B20/12
摘要： PROBLEM TO BE SOLVED: To reliably detect a data block boundary by detecting a boundary of a correction block independent of a sector ID.
SOLUTION: When a synchronization signal frame is generated by adding modulation processing and a synchronization signal to a correction block constructed by adding an error correction code to a plurality of data blocks which include at least additional information and recording information, a first synchronization signal is imparted to a synchronization signal frame located in a boundary of the correction block, and a second synchronization signal is imparted to a synchronization signal frame located in a boundary of the data block. Furthermore, synchronization patterns included at least in the first and second synchronization signals give patterns with the low degree of similarity to each other.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：通过检测独立于扇区ID的校正块的边界来可靠地检测数据块边界。解决方案：当通过向包括至少附加信息和记录信息的多个数据块添加纠错码而构成的校正块来产生同步信号帧时，将第一同步信号帧信号被赋予位于校正块的边界中的同步信号帧，并且第二同步信号被赋予位于数据块的边界中的同步信号帧。此外，至少包括在第一和第二同步信号中的同步模式给出彼此具有低相似度的模式。版权所有（C）2011，JPO＆INPIT

7. 发明专利

JP2008092391A Recording stream generating method and reproducing method thereof, recording device, and reproducing device 审中-公开
标题翻译：记录流生成方法及其再现方法，记录装置和再现装置
公开(公告)号：JP2008092391A
公开(公告)日：2008-04-17
申请号：JP2006272409
申请日：2006-10-04
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRAYAMA HIROSHI
IPC分类号： H04N5/92 , G11B20/10 , H04N7/173 , H04N21/231 , H04N21/236 , H04N21/433 , H04N21/434
摘要： PROBLEM TO BE SOLVED: To generate a recording stream suitable to simultaneous recording to a disk device and capable of having jitters suppressed when reproduced from a stream received from a transmission line on which reception time of a packet is randomly delayed behind transmission time and a stream received from a transmission line where no delay is generated. SOLUTION: A recording stream generating method includes: receiving a first stream for a first transmission line; generating reference time for the recording stream from the detection timing of a packet as a constitution unit thereof; receiving a second stream for a second transmission line; correcting intervals of a packet string to the time series when transmitted according to transmission time included in the packet as the constitution unit thereof and the reference time; and multiplexing the first stream and the second stream having been corrected in the order of detection time of respective packet strings. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了产生适合于同时记录到盘装置的记录流，并且能够从从传输线接收到的数据流再现时抑制抖动，在传输线上接收到数据包的接收时间在传输时间后随机延迟以及从不产生延迟的传输线接收的流。解决方案：记录流生成方法包括：接收用于第一传输线的第一流; 从分组的检测定时产生用于记录流的参考时间作为其构成单元; 接收用于第二传输线的第二流; 根据包含在分组中的传输时间作为其构成单元和参考时间来将分组串的间隔校正到根据传输时间序列的时间序列; 并且按照各个分组串的检测时间的顺序对第一流和第二个流进行多路复用。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2007048353A Optical disk device and optical disk playback method 有权
标题翻译：光盘设备和光盘播放方法
公开(公告)号：JP2007048353A
公开(公告)日：2007-02-22
申请号：JP2005230233
申请日：2005-08-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRAYAMA HIROSHI
IPC分类号： G11B20/10 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To enable reproduction wherein an error rate is suppressed at an optimal tap coefficient by adaptive equalization processing from a reproduction target block.
SOLUTION: The optical disk device sets an attenuation rate for deciding the updating speed of a tap coefficient, After N block (integer positive in N) reproduce, determines the convergence of adaptive equalization processing based on an error obtained from a FIR filter output and an equalization target value or a tap coefficient amount per unit time, and decides the number of converged blocks N with respect to the set attenuation rate. During reproduction, an access target bock before the N block of a reproduction target block is accessed by using the number of converged blocks N to start adaptive equalization processing.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过来自再现目标块的自适应均衡处理，能够实现以最佳抽头系数抑制错误率的再现。解决方案：光盘装置设置用于决定抽头系数的更新速度的衰减率。在N块（N中的整数为正）再现之后，基于从FIR滤波器获得的误差确定自适应均衡处理的收敛输出和均衡目标值或每单位时间的抽头系数量，并且相对于设定的衰减率决定收敛块N的数量。在再现期间，通过使用收敛块N的数量来访问在再现目标块的N块之前的接入目标块开始自适应均衡处理。版权所有（C）2007，JPO＆INPIT

9. 发明专利

JP2004004110A Heating resistor type air-flow rate measuring module 有权
公开(公告)号：JP2004004110A
公开(公告)日：2004-01-08
申请号：JP2003202167
申请日：2003-07-28
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： IGARASHI SHINYA , KOBAYASHI CHIHIRO , HIRAYAMA HIROSHI , SAITO TAKAYUKI , ARAI NOBUKATSU
IPC分类号： G01F1/684 , F02D35/00
摘要： PROBLEM TO BE SOLVED: To provide a heating resistor type air-flow rate measuring device which is superior in cost reduction in internal combustion engine and in mountability. SOLUTION: In an analysis method for the phase length of polyphase body, an accessory air passageway is integrated with a part of a module and is structured to provide a single module with all the functions necessary for the heating resistance type air-flow rate measuring device. It is one kind of module of the heating resistance type air-flow rate measuring device and can be mounted in each engine, and cost reduction, including the system cost of the internal combastion engine, can be attained. Furtheremore, it can be mounted in an air cleaner and the like of a air suction system and the heating resistor type air-flow meter of superior mountability can be provide. COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2003317388A Disk recording device and disk recording method 审中-公开
标题翻译：盘记录装置和磁盘记录方法
公开(公告)号：JP2003317388A
公开(公告)日：2003-11-07
申请号：JP2002120218
申请日：2002-04-23
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： HIRAYAMA HIROSHI , SUNADA TAKAHIRO , SEKINE TAKEHIKO
IPC分类号： G11B20/10 , G11B7/0045 , G11B20/14
摘要： PROBLEM TO BE SOLVED: To determine the recording address and recording position on an optical disk having a wobble phase modulation format by using a wobble reproduction signal and a track reproduction signal.
SOLUTION: A disk recording device detects address information on the disk and a synchronization signal for each of the wobble reproduction signal and track reproduction signal from the optical disk and, in accordance with each detecting state, selects address information necessary for determining the disk recording track and synchronizing timing necessary for determining the linking position.
COPYRIGHT: (C)2004,JPO

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