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11. 发明授权

US3476556A Austenitic heat-resisting steel containing niobium and vanadium 失效
标题翻译：包含铌和钒的奥氏体耐热钢
公开(公告)号：US3476556A
公开(公告)日：1969-11-04
申请号：US3476556D
申请日：1966-03-23
申请人： HITACHI LTD
发明人： SASAKI RYOICHI , HATAYA HUMIO
IPC分类号： B23K35/30 , C22C38/44 , C22C38/58 , C22C39/26 , C22C39/20
CPC分类号： B23K35/3086 , C22C38/44 , C22C38/58

12. 发明专利

DE69816400T2 未知
公开(公告)号：DE69816400T2
公开(公告)日：2004-06-09
申请号：DE69816400
申请日：1998-11-02
申请人： HITACHI LTD
发明人： SUSAKI SEIICHI , UMEZAWA KATSUYUKI , KAJI TADASHI , TEZUKA SATORU , SASAKI RYOICHI , TABATA KUNIAKI , AKAOSUGI TAKASHI , KITO AKIRA
IPC分类号： G06F12/00 , G06F1/00 , G06F9/46 , G06F13/00 , G06F21/00 , H04L29/06
摘要： A distributed object system comprising at least one object distributing server, at least one client terminal and at least one server object execution server according to the present invention, including: an object distributing server for storing an object program to which an electronic signature is affixed; a client terminal including means for down-loading the object program from the object distributing server, means for verifying the electronic signature affixed to the object program, means for executing the client object program when the completeness of the object program is confirmed and the user of the client terminal beforehand permits execution of the client object program which is electronically signed by a signatory, and means for transmitting the electronic signature affixed to the object program to a server object execution server; and a server object execution server including means for verifying the signature received, and means for supplying services to the user of the client terminal when the completeness of the object program is confirmed and the user and the object program permit use of the services in advance, which makes it possible to prevent a client object which is down-loaded to a client terminal through a network and executed therein from carrying out unjustified processing (not intended by a user using the client terminal) by using authority of the user.

13. 发明专利

DE69816400D1 未知
公开(公告)号：DE69816400D1
公开(公告)日：2003-08-21
申请号：DE69816400
申请日：1998-11-02
申请人： HITACHI LTD
发明人： SUSAKI SEIICHI , UMEZAWA KATSUYUKI , KAJI TADASHI , TEZUKA SATORU , SASAKI RYOICHI , TABATA KUNIAKI , AKAOSUGI TAKASHI , KITO AKIRA
IPC分类号： G06F12/00 , G06F1/00 , G06F9/46 , G06F13/00 , G06F21/00 , H04L29/06
摘要： A distributed object system comprising at least one object distributing server, at least one client terminal and at least one server object execution server according to the present invention, including: an object distributing server for storing an object program to which an electronic signature is affixed; a client terminal including means for down-loading the object program from the object distributing server, means for verifying the electronic signature affixed to the object program, means for executing the client object program when the completeness of the object program is confirmed and the user of the client terminal beforehand permits execution of the client object program which is electronically signed by a signatory, and means for transmitting the electronic signature affixed to the object program to a server object execution server; and a server object execution server including means for verifying the signature received, and means for supplying services to the user of the client terminal when the completeness of the object program is confirmed and the user and the object program permit use of the services in advance, which makes it possible to prevent a client object which is down-loaded to a client terminal through a network and executed therein from carrying out unjustified processing (not intended by a user using the client terminal) by using authority of the user.

14. 发明专利

DE3603336C3 未知
公开(公告)号：DE3603336C3
公开(公告)日：1997-06-05
申请号：DE3603336
申请日：1986-02-04
申请人： HITACHI LTD
发明人： KOKAWA MASASUMI , ONARI MIKIHIKO , SASAKI RYOICHI
IPC分类号： G05B13/00 , G05B13/02 , G06F9/44 , G06N5/04 , G21D3/00
摘要： An analogical inference apparatus for control system is disclosed in which, in order to be able to generate a control signal to a system, which is to be controlled, even when conditions to be premised are unknown, the degree of similarity between the detected control signal from a sensor incorporated in the system and one of the predetermined control conditions stored in a memory is estimated by estimation means, and then a control value is inferred in accordance with the result of the estimation.

15. 发明专利

DE3851084D1 未知
公开(公告)号：DE3851084D1
公开(公告)日：1994-09-22
申请号：DE3851084
申请日：1988-05-13
申请人： HITACHI LTD
发明人： HAGIWARA MASAYOSHI , SUZUKI MICHIO , SASAKI RYOICHI , SUGANO MINORU , HORIKI AKIRA , HAYASHI KAZUYUKI
IPC分类号： H04L12/54 , H04L12/56
摘要： In order to enable an expansion of a packet switched network and a constitution change thereof to be readily achieved in a multistage switched network constitution, in a packet switched network (1110) including a packet data terminal (111), a packet switching equipment (118), a PBX (113), a multiplexer (116), an LAN (112), a voice communication apparatus such as a telephone set (115), and a facsimile or in a linkage between switching modules in a packet switching apparatus, the basic switching modules called configuration units (4, 109) connected to the network are interconnected to each other to form a hierarchic tree structure of which the number of hierarchic levels can be selected depending on a size of the packet switched network. Furthermore, in order to increase the reliability of the packet data transfer in the multistage switched network configuration, there are disposed a plurality of connecting lines between bit switches (FIG. 3, 23-25, 40-44, 60-68) and upper-level configuration units so as to establish a redundant configuration.

16. 发明专利

DE60041617D1 未知
公开(公告)号：DE60041617D1
公开(公告)日：2009-04-09
申请号：DE60041617
申请日：2000-07-26
申请人： HITACHI LTD
发明人： YOSHIURA HIROSHI , SASAKI RYOICHI
IPC分类号： H04L29/06 , G06F13/00 , G06F21/00 , G06F21/24 , G06T1/00 , G09C1/00 , G09C5/00 , H04N1/32 , H04N1/387
摘要： A multimedia data distributing system comprising an ID issuing center side device and a multimedia data distributor side device for distributing multimedia data as electronic data to a purchaser of the multimedia data. The multimedia data distributor device includes: an attribute information transmitting unit that transmits attribute information of the electronic data indicating the multimedia data to be distributed, to the ID issuing center side device; a watermark information embedding unit that embeds information specifying the ID number transmitted from the ID issuing center side device in response to the attribute information transmitted to the attribute information transmitting unit, as an watermark information in the electronic data indicating the multimedia data to be distributed; and a distribution unit that distributes the electronic data indicating the multimedia data, in which the information specifying the ID number is embedded as the watermark information by the watermark information embedding unit, to the purchaser of the multimedia data. The ID issuing center side device includes: an ID number generating unit that generates a unique ID number and registering the generated ID number in a database in a manner to correspond to the attribute information transmitted by the distributor of the multimedia data; and an ID number transmitting unit that transmits the information specifying the generated ID number to the multimedia data distributor device.

17. 发明专利

AU758676B2 Method and system for recovering the validity of cryptographically signed digital data 未知
公开(公告)号：AU758676B2
公开(公告)日：2003-03-27
申请号：AU3887901
申请日：2001-04-26
申请人： HITACHI LTD
发明人： MIYAZAKI KUNIHIKO , YOSHIURA HIROSHI , SUSAKI SEIICHI , SASAKI RYOICHI , TOYOSHIMA HISASHI , TAKARAGI HISASHI , MATSUKI TAKESHI
IPC分类号： G09C1/00 , G06F21/00 , H04L9/32 , G06F12/16
摘要： According to the present invention, techniques, including a method and system, for restoring and/or validating data and/or associated signature log entries are provided. One embodiment of the present invention provides a method for validating a restored message, having an entry generated in a signature log for a message, where the entry includes cryptographic information associated with the message; Next, when message is lost, the restored message is generated responsive to a request; and the restored message is validated using the signature log. In another embodiment a method for validating a selected log entry by using a signature log having a plurality of recorded log entries is provided. The method includes: computing a cryptographic value for the selected log entry; and determining if the cryptographic value is part of another recorded log entry.

18. 发明专利

DE3175528D1 USE OF NICKEL BASE ALLOY HAVING HIGH RESISTANCE TO STRESS CORROSION CRACKING 未知
公开(公告)号：DE3175528D1
公开(公告)日：1986-12-04
申请号：DE3175528
申请日：1981-12-22
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： HATTORI SHIGEO , WATANABE RIKIZO , MORI YASUHIKO , MASAOKA ISAO , SASAKI RYOICHI , ITOW HISAO
IPC分类号： C22C19/05
摘要： A member adapted for use under a stress in an atmosphere of a temperature below the creep temperature and made from an Ni base alloy having a high resistance to stress corrosion cracking. The Ni alloy consists essentially of, by weight, 15 to 25% of Cr, 1 to 8% of Mo, 0.4 to 2% of Al, 0.7 to 3% of Ti, 0.7 to 4.5% of Nb and the balance Ni, and has an austenite matrix in which precipitated is at least one of y' phase and y" phase. The member can suitably used as parts which are subjected to pure water in nuclear reactor.

19. 发明专利

DE60127516D1 未知
公开(公告)号：DE60127516D1
公开(公告)日：2007-05-10
申请号：DE60127516
申请日：2001-02-22
申请人： HITACHI LTD
发明人： MIYAZAKI KUNIHIKO , SASAKI RYOICHI , TAKARAGI KAZUO , SUSAKI SEIICHI , MISHIMA HISANORI , MATSUKI TAKESHI , TAKEUCHI KUNIHITO , IWAMURA MITSURU , MATSUMOTO TSUTOMU
IPC分类号： H04L9/32 , G06F19/00 , G06Q10/00 , G06Q50/00 , G06Q50/10 , G06Q50/26 , G09C1/00
摘要： In a signature generating method where not necessarily all of a plurality of signature generating devices work together each time to generate signatures, the present invention seeks to correctly and securely reflect data relating to previous signatures. When generating signatures, the data used for the next signature is sent beforehand to the other signature generating devices. Also, when generating signatures, at least one of the devices is used consecutively, thus allowing history data to be shared during signature generation.

20. 发明专利

AU3887901A Method and system for recovering the validity of cryptographically signed digital data 未知
公开(公告)号：AU3887901A
公开(公告)日：2002-09-26
申请号：AU3887901
申请日：2001-04-26
申请人： HITACHI LTD
发明人： MIYAZAKI KUNIHIKO , MATSUKI TAKESHI , TOYOSHIMA HISASHI , TAKARAGI KAZUO , SASAKI RYOICHI , SUSAKI SEIICHI , YOSHIURA HIROSHI
IPC分类号： G09C1/00 , G06F21/00 , H04L9/32 , G06F12/16
摘要： According to the present invention, techniques, including a method and system, for restoring and/or validating data and/or associated signature log entries are provided. One embodiment of the present invention provides a method for validating a restored message, having an entry generated in a signature log for a message, where the entry includes cryptographic information associated with the message; Next, when message is lost, the restored message is generated responsive to a request; and the restored message is validated using the signature log. In another embodiment a method for validating a selected log entry by using a signature log having a plurality of recorded log entries is provided. The method includes: computing a cryptographic value for the selected log entry; and determining if the cryptographic value is part of another recorded log entry.

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