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1. 发明专利

JP2007200342A Data accessing method and device of distributed database 有权
标题翻译：数据访问方法和分布式数据库的设备
公开(公告)号：JP2007200342A
公开(公告)日：2007-08-09
申请号：JP2007061199
申请日：2007-03-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAMURA KIMITAKA , KUMAMOTO KUNIO , ITO MAKOTO , HAGA YOICHI , YAMAMOTO TOSHIO , KOBAYASHI SATOSHI , KOISO NORIKO , SATO TAKAO , YOSHINO KOUICHIRO
IPC分类号： G06F12/00 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To save a storage area by suppressing communication traffic volume due to the inquiry concentration as to locations of data in addition to improvement of operability/scalability capable of easily generating/maintaining a distributed database environment in databases on a plurality of computer systems connected to a network.
SOLUTION: An access route to the data of a remote database is arbitrarily defined and stored in each local database, when the route is traced, data are automatically retrieved, location information is attached, the data are parallelly retrieved from a plurality of databases even when the location information of the data is not held, the location information of the data is learned during retrieval, and a user is notified of the location information of the data.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：除了能够容易地生成/维护数据库中的分布式数据库环境的可操作性/可扩展性的改进之外，通过抑制与查询集中在一起的数据位置来抑制通信量的存储区域连接到网络的多个计算机系统。解决方案：对远程数据库的数据的访问路由被任意定义并存储在每个本地数据库中，当跟踪路由时，自动检索数据，附加位置信息，数据从多个数据库即使不保持数据的位置信息，也可以在检索期间学习数据的位置信息，并向用户通知数据的位置信息。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2000076110A Recovering process system of decentralized file system 审中-公开
标题翻译：分散文件系统的恢复过程系统
公开(公告)号：JP2000076110A
公开(公告)日：2000-03-14
申请号：JP24286798
申请日：1998-08-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAMOTO TOSHIO , TAKEUCHI KAZUYUKI , TAMURA KIMITAKA , HAGA YOICHI
IPC分类号： G06F15/16 , G06F3/06 , G06F12/00
摘要： PROBLEM TO BE SOLVED: To make the system automatically recover in a short time by accessing a decentralized file by using location information on the file and restoring only a file judged to be broken from backup information.
SOLUTION: When a user recognizes file breakage, a fault detecting and restoring process execution part 301 reads in the management information of the file by using a file operation part 304 and compares the identification record that the management information has with the value of an identification record storage part 303. When the identification record does not match the value or when the file can not be read in, it is judged that the file is broken. In this case, a backup information operation part 305 fetches the corresponding file from the backup information. Then the fault detecting and restoring process execution part 301 transfers the fetched file to the file operation part 304 to restore it in a directory on a specified host. Consequently, an efficient system recovery becomes possible.
COPYRIGHT: (C)2000,JPO
摘要翻译：要解决的问题：通过使用文件上的位置信息访问分散文件并仅恢复被判断为备份信息的文件，使系统在短时间内自动恢复。解决方案：当用户识别出文件破损时，故障检测和恢复处理执行部分301通过使用文件操作部分304读取文件的管理信息，并将管理信息所具有的识别记录与识别记录的值进行比较存储部303.当识别记录与该值不匹配或当该文件不能被读入时，判断文件被破坏。在这种情况下，备份信息操作部305从备份信息中取出对应的文件。然后，故障检测和恢复处理执行部301将获取的文件传送到文件操作部304，将其恢复到指定主机的目录中。因此，有效的系统恢复成为可能。

3. 发明专利

JP2002149651A DATA MANAGEMENT SYSTEM 失效
公开(公告)号：JP2002149651A
公开(公告)日：2002-05-24
申请号：JP2000345042
申请日：2000-11-13
申请人： HITACHI LTD
发明人： OUE MASAYA , YAMAMOTO TOSHIO , KUROSAWA MASAHIRO
IPC分类号： G06F12/14 , G06F12/00 , G06F17/30 , G06F17/50 , G06F21/24
摘要： PROBLEM TO BE SOLVED: To provide a data management system capable of restricting the access to a some part of data without restricting the access to the data itself. SOLUTION: The figure shows the case of drawing data as the example of data stored in a database, numeral 231 shows a drawing 1, 501 is a shape layer, 502 is a dimension layer, 503 is a note layer and 504 is a table layer. 232 shows access authority information to the drawing and the respective layers, and the access authority information is provided to each group to show the presence of access authority with ○ and the absence of it with ×. A user is assigned with a group in advance and when the user access desired drawing data, the group assigned to the user is taken out. Then, in accordance with the access authority information of this group set previously to the desired drawing data, the respective layers having the access authority are read and the respective read layers are displayed on a display device. 505 is the example of display in the case of the access authority information of a group A.

4. 发明专利

JPS5996802A SPEED CONTROL SYSTEM FOR VEHICLE 失效
公开(公告)号：JPS5996802A
公开(公告)日：1984-06-04
申请号：JP20209982
申请日：1982-11-19
申请人： JAPAN NATIONAL RAILWAY , HITACHI LTD
发明人： YASUKAWA SHINOBU , YAMAMOTO HIDEKI , YAMAMOTO TOSHIO , OOI HIROYUKI
IPC分类号： B60L15/40 , B60L15/20
摘要： PURPOSE:To eliminate the application of an abrupt acceleration to a vehicle by controlling the acceleration so that the acceleration enters the prescribed width when the speed control is shifted. CONSTITUTION:A target thrust calculator 5 interrupts at every T time, sets the calculated result Fa(t) in a target thrust memory 3 and interrupts a thrust comparator 1. A thrust calculator 6 interrupts at every DELTAt(T>DELTAt), calculates the thrust by way of F=F(t)+ or -DELTAF, sets it in a thrust memory 4, and interrupts the comparator 1. The comparator 1 outputs the thrust of F=F(t) (epsilonk is an allowable target thrust value) in case of ¦Fa(t)-F(t)¦>=epsilonk and the thrust of F=Fa(t) in case of ¦Fa(t)-F(t)¦

5. 发明专利

JPH09244939A DATA ACCESS METHOD FOR DISTRIBUTED DATA BASE AND DEVICE THEREFOR 失效
公开(公告)号：JPH09244939A
公开(公告)日：1997-09-19
申请号：JP5284896
申请日：1996-03-11
申请人： HITACHI LTD
发明人： TAMURA KIMITAKA , KUMAMOTO KUNIO , ITO MAKOTO , HAGA YOICHI , YAMAMOTO TOSHIO , KOBAYASHI SATOSHI , KOISO NORIKO , SATO TAKAO , YOSHINO KOUICHIROU
IPC分类号： G06F12/00
摘要： PROBLEM TO BE SOLVED: To eliminate the concentration of load to a specific computer system that is caused by the inquiry processing without limiting the system operation by associating an optional remote data base with every data base via a hierarchical structure and then setting an access path. SOLUTION: This method/device includes an input device 101, a display device 102, an input controller 103, a display controller 104, a hierarchy management device 105 which manages the data registered in a data base in groups and in a hierarchical structure and also processes the request given from the controller 103 to ask the controller 104 to display the request processing result, etc. In such a constitution, an access route of data is optionally defined to a remote data base 111 and stored in every local data base 110. Then the data are automatically retrieved via the defined access path and the location information is added, and the data are retrieved in parallel out of plural data bases even with absence of the data location information to notify a user of the data location information.

6. 发明专利

JPH1080020A GAS INSULATED SWITCHGEAR 失效
公开(公告)号：JPH1080020A
公开(公告)日：1998-03-24
申请号：JP23176396
申请日：1996-09-02
申请人： HITACHI LTD
发明人： YOSHIMOTO HIROSHI , TAKAHASHI KAZUHIKO , OZAWA HIROSHI , YAMAMOTO TOSHIO , OKUBO KENICHI
IPC分类号： H02B13/02 , H02B13/035
摘要： PROBLEM TO BE SOLVED: To provide a gas insulated switchgear which is low in height, small in installation area, and capable of being carried by a ten-ton truck. SOLUTION: At least, disconnecting switches 3, 4 for bus-bar, and main bus-bars 5, 6 are arranged in one direction around a circuit breaker 1, and at least, an earthing switch 9 for rail, an arrester 10, current transformers 13, 14, 15, and a cable head 12 are arranged in the other direction to constitute each component in a flat manner without double stacking, and to reduce the height.

7. 发明专利

JPH07123546A GAS INSULATED SWITCHGEAR 失效
公开(公告)号：JPH07123546A
公开(公告)日：1995-05-12
申请号：JP26333393
申请日：1993-10-21
申请人： HITACHI LTD
发明人： YAMAMOTO TOSHIO , TAKAHOSHI MASAHIRO , ITO SHUNJI , NAKANO KOICHI , KIKUCHI TAKEHIRO
IPC分类号： H02B13/02 , H01H33/42 , H02B13/065
摘要： PURPOSE:To reduce the size of an enclosure for a circuit breaker by housing a current transformer through an insulation spacer in a dedicated enclosure, disposing an enclosure housing the ground switches at the opposite ends of an interrupting section on one end face of the enclosure for circuit breaker, and setting the operating direction of the mover in the ground switch in parallel with that of the mover at the interrupting section. CONSTITUTION:A current transformer 7 is housed through an insulating spacer 15 in an enclosure dedicated for a circuit breaker. An enclosure 25 housing the ground switches 5a, 8a at the opposite ends of an interrupting section in parallel is disposed on one end face of the enclosure 16 for the circuit breaker. The operating direction of mover in the ground switch 5a, 8a is set in parallel with that of mover at the interrupting section. A switch control box 14 is disposed on the base 18 of gas insulated switchgear thus reducing the height and size of the enclosure 16 for the circuit breaker. This structure enhances the measurement accuracy of current transformer and reducing the installation space thus enhancing the maintenance and inspection performance.

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