Patents by Inventor Yoshihiro Kajiki

Yoshihiro Kajiki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9002811
    Abstract: An index update unit analyses the information stored in a document repository to create an index for search and stores the index in a time-series divisional index storage unit and creates, from an ACL repository, an access control entry ACE in association with the index for search, which is correlation of information to be searched with access right of at least a group to which the user belongs. The ACL cache generation unit creates ACL cache data that correlates the user with access right to the information to be searched, from the ACE, and registers the ACL cache data created in an ACL cache. A search processing unit searches for an index for search in response to a request for search from said user. In case the ACL cache data correlating the user with the index for search is registered in the ACL cache, the search processing unit takes, from among the information searched, the information, reference to which is allowed for the user as a search result, based on information in the ACL cache.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: April 7, 2015
    Assignee: NEC Corporation
    Inventors: Masaki Kan, Yoshihiro Kajiki
  • Patent number: 8595272
    Abstract: A management policy is given to a predetermined storage area by an administrator or a predetermined end user of end users as users of a plurality of client terminals. At this time, a file server generates a setting file in which the management policy is written, to set in a directory corresponding to the predetermined storage area. A write instruction (change data) is given by the administrator or the predetermined end user. The file server changes the management policy based on the change data.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: November 26, 2013
    Assignee: NEC Corporation
    Inventors: Takashi Torii, Yoshihiro Kajiki
  • Patent number: 8346826
    Abstract: A system which includes at least one client, a plurality of file servers, each having a file system, and a switch logically arranged between the client and the plurality of file servers to provide file access services which virtually render the plurality of file systems accessible as a single file system, termed a ‘pseudo file system’, when viewed from the terminal. The switch distributes a command that starts generation of snapshots to the plurality of file servers, which file servers formulate respective snapshots responsive to the command that starts formation of the snapshots. The switch sets the plurality of snapshots, generated by the plurality of file servers, so as to be associated with the file system structure of the virtual file system at the time of formation of the snapshots.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: January 1, 2013
    Assignee: NEC Corporation
    Inventors: Takashi Torii, Satoshi Yamakawa, Yoshihiro Kajiki
  • Patent number: 8301603
    Abstract: Disclosed is a system in which an index registration unit registers an index, which will be used for search processing, as a partitioned index which is partitioned on a time series basis, and a search means reads indexes older than a specified point in time, which is used as a search base point, to perform search processing, thereby searching for information based on a point in time in the past.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: October 30, 2012
    Assignee: NEC Corporation
    Inventors: Masaki Kan, Yoshihiro Kajiki, Satoshi Yamakawa, Takashi Torii, Yuji Kaneko
  • Patent number: 8224772
    Abstract: Disclosed is a data management apparatus comprising a message transfer/analysis unit that receives an object data access request from a client and returns a response; an object metadata storage unit that stores, as metadata, a set of ancillary information on data for an object and a data area corresponding to the ancillary information; an object metadata management unit that performs reading, updating, and registration processing for the metadata; a data conversion unit that sends the data access request to a data access unit, extracts object data; and a data access unit that sends a data access command, specified by the data conversion unit, to a file server or a database server and sends response data, received from the file server or the database server, to the data conversion unit.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: July 17, 2012
    Assignee: NEC Corporation
    Inventors: Satoshi Yamakawa, Yoshihiro Kajiki
  • Publication number: 20110218999
    Abstract: The index update unit analyses the information stored in a document repository to create an index for search and stores the index in a time-series divisional index storage unit and creates, from an ACL repository, an access control entry ACE in association with the index for search, which is correlation of information to be searched with access right of at least a group to which the user belongs. The ACL cache generation unit creates ACL cache data that correlates the user with access right to the information to be searched, from the ACE, and registers the ACL cache data created in an ACL cache. A search processing unit searches for an index for search in response to a request for search from said user. In case the ACL cache data correlating the user with the index for search is registered in the ACL cache, the search processing unit_takes, from among the information searched, the information, reference to which is allowed for the user as a search result, based on information in the ACL cache.
    Type: Application
    Filed: November 13, 2009
    Publication date: September 8, 2011
    Inventors: Masaki Kan, Yoshihiro Kajiki
  • Patent number: 7925810
    Abstract: A data storage system has a first storage unit and a second storage unit for storing the same data received from a plurality of higher-level devices. The first storage unit transmits sequence information representative of a sequence for storing the data received from the higher-level devices, to said second storage unit.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: April 12, 2011
    Assignee: NEC Corporation
    Inventors: Michitaro Miyata, Yoshihiro Kajiki, Yoshihiro Hasebe
  • Patent number: 7860867
    Abstract: An information managing system includes a parameter setting unit for setting a parameter representative of an attribute of a user and information to be retrieved, and an information relevance space generator for generating an information relevance space representative of information indicating a relevance between the user and the information to be retrieved, based on the parameter set by the parameter setting unit.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: December 28, 2010
    Assignee: NEC Corporation
    Inventors: Masaki Kan, Junichi Yamato, Yuji Kaneko, Yoshihiro Kajiki
  • Patent number: 7818287
    Abstract: Disclosed is a storage management system including at least one client, a first server having a primary storage, a second server having a secondary storage, and an intermediate device logically arranged between the client and the first and second servers. The primary storage includes a stub file in which there is recorded the position information of the real file migrated from the primary storage to the secondary storage. The intermediate device exercises control so that, when a file access request of the primary storage of a first server, issued by the client, is received by the intermediate device, the intermediate device receives the file access request and, if the file to be accessed is a stub file, and the access request necessitates accessing to the real file, the intermediate device accesses the real file of the secondary storage using the information of the stub file to return a response.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: October 19, 2010
    Assignee: NEC Corporation
    Inventors: Takashi Torii, Satoshi Yamakawa, Yoshihiro Kajiki
  • Publication number: 20100250634
    Abstract: A management policy is given to a predetermined storage area by an administrator or a predetermined end user of end users as users of a plurality of client terminals. At this time, a file server generates a setting file in which the management policy is written, to set in a directory corresponding to the predetermined storage area. A write instruction (change data) is given by the administrator or the predetermined end user. The file server changes the management policy based on the change data.
    Type: Application
    Filed: February 15, 2008
    Publication date: September 30, 2010
    Inventors: Takashi Torii, Yoshihiro Kajiki
  • Patent number: 7765217
    Abstract: Each of the sites interconnected to one another through a wide area network includes at least one client, a switch device logically disposed between the client and at least one server including a storage device, for providing to the client a file access virtually unifying of a plurality of storage devices, and an analysis device connected to the switch device. The switch device takes log information on the file access from the client. The analysis device determines data to be migrated to the server in a site to which the client belongs or the server in a site in vicinity of the site to which the client belongs, and commands the switch device to migrate the data. The switch device migrates the data based on the command from the analysis device.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: July 27, 2010
    Assignee: NEC Corporation
    Inventors: Satoshi Yamakawa, Takashi Torii, Yoshihiro Kajiki
  • Publication number: 20100179953
    Abstract: An information presentation system comprises a time-series search processing unit 1, a time-series search input/output unit 2, a period information extraction unit 4, and a period information presentation unit 3. The period information presentation unit 3 provides period information, extracted by the period information extraction unit 4, to the time-series search input/output unit 2, which presents the period information to a user.
    Type: Application
    Filed: June 2, 2008
    Publication date: July 15, 2010
    Inventors: Masaki Kan, Yoshihiro Kajiki, Nami Uchida
  • Patent number: 7739544
    Abstract: Disclosed is a disk array system which includes a plurality of disks constituting a disk array and a backup storage for backing up data in the disk array and performs control so that when a failed disk among the disks constituting the disk array is replaced with the replacement disk, restoration of data in the replacement disk is performed using the backup device.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: June 15, 2010
    Assignee: NEC Corporation
    Inventors: Junichi Yamato, Yoshihiro Kajiki
  • Publication number: 20100094803
    Abstract: Disclosed is a data management apparatus comprising a message transfer/analysis unit that receives an object data access request from a client and returns a response; an object metadata storage unit that stores, as metadata, a set of ancillary information on data for an object and a data area corresponding to the ancillary information; an object metadata management unit that performs reading, updating, and registration processing for the metadata; a data conversion unit that sends the data access request to a data access unit, extracts object data; and a data access unit that sends a data access command, specified by the data conversion unit, to a file server or a database server and sends response data, received from the file server or the database server, to the data conversion unit.
    Type: Application
    Filed: November 30, 2007
    Publication date: April 15, 2010
    Inventors: Satoshi Yamakawa, Yoshihiro Kajiki
  • Publication number: 20100088318
    Abstract: Disclosed is a system in which an index registration unit registers an index, which will be used for search processing, as a partitioned index which is partitioned on a time series basis, and a search means reads indexes older than a specified point in time, which is used as a search base point, to perform search processing, thereby searching for information based on a point in time in the past.
    Type: Application
    Filed: October 2, 2007
    Publication date: April 8, 2010
    Inventors: Masaki Kan, Yoshihiro Kajiki, Satoshi Yamakawa, Takashi Torii, Yuji Kaneko
  • Publication number: 20080162608
    Abstract: Disclosed is a system which includes at least one client, a plural number of file servers, each having a file system, and a switch logically arranged between the client and the plural file servers to provide file access services which virtually render the plural file services accessible as a single file system, termed a ‘pseudo file system’, when viewed from the terminal. The switch distributes a command for start of generation of snapshots to the plural file servers, which file servers formulate respective snapshots responsive to the command for start of formation of the snapshots. The switch sets the plural snapshots, generated by the plural file servers, so as to be associated with the file system structure of the virtual file system at the time of formation of the snapshots.
    Type: Application
    Filed: March 11, 2008
    Publication date: July 3, 2008
    Applicant: NEC CORPORATION
    Inventors: Takashi TORII, Satoshi YAMAKAWA, Yoshihiro KAJIKI
  • Publication number: 20080162607
    Abstract: Disclosed is a system which includes at least one client, a plural number of file servers, each having a file system, and a switch logically arranged between the client and the plural file servers to provide file access services which virtually render the plural file services accessible as a single file system, termed a ‘pseudo file system’, when viewed from the terminal. The switch distributes a command for start of generation of snapshots to the plural file servers, which file servers formulate respective snapshots responsive to the command for start of formation of the snapshots. The switch sets the plural snapshots, generated by the plural file servers, so as to be associated with the file system structure of the virtual file system at the time of formation of the snapshots.
    Type: Application
    Filed: March 11, 2008
    Publication date: July 3, 2008
    Applicant: NEC CORPORATION
    Inventors: Takashi TORII, Satoshi YAMAKAWA, Yoshihiro KAJIKI
  • Publication number: 20080052331
    Abstract: An ILM device manages data arrangement in multiple storage areas to each of which a service level (called SLA), which guarantees a service level to data, is assigned, checks whether the SLA of a storage area satisfies a required service level object (SLO) of data to which the SLO is assigned, and determines the data arrangement so that the data is stored in a storage area whose SLA satisfies the SLO. A data migration execution unit migrates the data in storage based on the data arrangement determined by the ILM device.
    Type: Application
    Filed: July 20, 2007
    Publication date: February 28, 2008
    Applicant: NEC Corporation
    Inventors: Shugo Ogawa, Yoshihiro Kajiki, Satoshi Yamakawa
  • Publication number: 20070198784
    Abstract: A data storage system has a first storage unit and a second storage unit for storing the same data received from a plurality of higher-level devices. The first storage unit transmits sequence information representative of a sequence for storing the data received from the higher-level devices, to said second storage unit.
    Type: Application
    Filed: January 5, 2007
    Publication date: August 23, 2007
    Applicant: NEC CORPORATION
    Inventors: Michitaro Miyata, Yoshihiro Kajiki, Yoshihiro Hasebe
  • Publication number: 20070174275
    Abstract: An information managing system includes a parameter setting unit for setting a parameter representative of an attribute of a user and information to be retrieved, and an information relevance space generator for generating an information relevance space representative of information indicating a relevance between the user and the information to be retrieved, based on the parameter set by the parameter setting unit.
    Type: Application
    Filed: December 20, 2006
    Publication date: July 26, 2007
    Inventors: Masaki Kan, Junichi Yamato, Yuji Kaneko, Yoshihiro Kajiki