Patents by Inventor Shinji Fujiwara

Shinji Fujiwara 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).

  • Publication number: 20190153312
    Abstract: The present invention provides a photoluminescent material emitting a visible light by irradiation of light, which is zeolite A comprising silver ion, zinc ion and at least one selected from the group consisting of cesium ion and rubidium ion.
    Type: Application
    Filed: May 29, 2017
    Publication date: May 23, 2019
    Applicant: RENGO CO., LTD.
    Inventors: Kouju SUGIYAMA, Toshikazu HANATANI, Kaoru YAMAGUCHI, Shinji FUJIKI, Minoru MATSUKURA, Shogo FUJIWARA, Akio TANIGUCHI, Junichi UCHITA
  • Patent number: 10242053
    Abstract: There is a storage apparatus which provides a storage area, comprises a cache memory, reads data into the cache memory from the storage area according to a read request and sends the data from the cache memory, and a computer is coupled to the storage apparatus. The computer receives a data processing request, determines an access usage based on the data processing request (or, the information relating to an access usage of the data processing request), selects a logical device corresponding to the determined access usage from a plurality of logical devices which are allocated to the storage area and issues a read request to the selected logical device.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: March 26, 2019
    Assignees: Hitachi, Ltd., The University of Tokyo
    Inventors: Hideomi Idei, Norifumi Nishikawa, Shinji Fujiwara, Kazuhiko Mogi, Kazuo Goda, Masaru Kitsuregawa
  • Publication number: 20180349422
    Abstract: A database includes a plurality of data blocks. Each of the plurality of data blocks includes a plurality of data pages in which a plurality of column values recorded in one or more records corresponding to the data block are stored. Each of the plurality of data pages has two or more column values in one column corresponding to the data page stored therein. A database server selects a data block from the plurality of data blocks and specifies a data page to be scanned from the selected data block.
    Type: Application
    Filed: April 13, 2015
    Publication date: December 6, 2018
    Inventors: Takayuki TSUCHIDA, Michiko TANAKA, Akira SHIMIZU, Shinji FUJIWARA, Kazuhiko MOGI
  • Patent number: 9971793
    Abstract: A database management system receives a new data table input to a database; and executes unique constraint determination processing of determining whether each comparison-subject value as each value registered in a target column in the new data table is different from each comparison reference value as each value registered in a target column in a stored data table in the database, and stores the new data table in a second database area different from a first database area storing the stored data table in the database when a determination result obtained in the unique constraint determination processing is true.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: May 15, 2018
    Assignee: HITACHI, LTD.
    Inventors: Takayuki Tsuchida, Akira Shimizu, Shinji Fujiwara, Wataru Kawai, Shinsuke Hamada, Yuki Yamada
  • Patent number: 9870152
    Abstract: A management system manages a plurality of data units constituting schemas of a database in a storage device, which includes a plurality of first storage device sets having a plurality of storage areas. An ordered schema constituted of the plurality of data units having order properties defining respective orders is included in the schemas. When a second storage device set, which is a set of one or more second storage devices and in which each of the storage areas is a free storage area, is added to the first storage device set, the management system migrates two or more data units not consecutive in the order among a plurality of data units stored in the plurality of storage areas in the first storage device set respectively from at least the one first storage device set to the free storage areas of the second storage device set.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: January 16, 2018
    Assignee: Hitachi, Ltd.
    Inventors: Hideomi Idei, Norifumi Nishikawa, Shinji Fujiwara, Kazuhiko Mogi
  • Patent number: 9842136
    Abstract: A database management system (DBMS) generates a query execution plan including information indicating one or more database (DB) operations necessary to execute the query. The DBMS dynamically generates a task for executing the DB operation in execution of the query. The DBMS performs a determination processing of simultaneous-task-generation number when newly creating a task. The determination processing of simultaneous-task-generation number is to calculate the number of simultaneous task generation, which is the number of tasks that can be generated simultaneously, based on the number of tasks which can be newly generated, a first memory resource amount which is the amount of memory resources necessary to be allocated per task newly generated, and a second memory resource amount which is the number of memory resources that can be newly allocated. The number of tasks generated dynamically and simultaneously is equal to or smaller than the calculated number of simultaneously generatable tasks.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: December 12, 2017
    Assignees: Hitachi, Ltd., The University of Tokyo
    Inventors: Seisuke Tokuda, Akira Shimizu, Michiko Yoshida, Nobuo Kawamura, Shinji Fujiwara, Kazuhiko Mogi, Masaru Kitsuregawa, Kazuo Goda
  • Patent number: 9841989
    Abstract: A parallel data processing system includes a parallel data processing execution unit for reading a data from a data set including a first data set that includes a plurality of first data and a second data set that includes a plurality of second data and executing processing. The parallel data processing execution unit (A) reads the first data from the first data set, and acquires a first value from the first data based on first format information acquired from an application, (B) generates one or more threads for respectively reading one or more second data corresponding to the first value from the second data set based on first reference information acquired from the application, (C) executes (A) and (B) on one or more first data in the first data set, and (D) executes a plurality of the threads in parallel.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: December 12, 2017
    Assignees: Hitachi, Ltd., The University of Tokyo
    Inventors: Kazuo Goda, Hiroyuki Yamada, Masaru Kitsuregawa, Nobuo Kawamura, Shinji Fujiwara, Kazuhiko Mogi
  • Patent number: 9639576
    Abstract: A database management system (DBMS) generates a query execution plan including information representing one or more database (DB) operations necessary for executing a query, and executes the query in accordance with the query execution plan. In the execution of the query, the DBMS dynamically generates tasks for executing the DB operations and executes the dynamically generated tasks. The query execution plan includes a plurality of query blocks, which are sets of one or more DB operations. When newly generating a task, the DBMS executes determination processing of simultaneous-task-generation number. The determination processing of simultaneous-task-generation number is to calculate, targeting each of the query blocks, the number of simultaneous task generation, which is the number of tasks simultaneously generatable as tasks for executing the query block. The number of the dynamically generated tasks is equal to or smaller than the number of simultaneous task generation.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: May 2, 2017
    Assignees: Hitachi, Ltd., The University of Tokyo
    Inventors: Seisuke Tokuda, Akira Shimizu, Michiko Yoshida, Shinji Fujiwara, Kazuhiko Mogi, Masaru Kitsuregawa, Kazuo Goda
  • Publication number: 20170004172
    Abstract: As an I/O method of issuing an I/O request, there are a synchronous I/O method, in which a task is in a waiting state until an I/O response to the I/O request is returned and an asynchronous I/O method, in which another task can be executed before an I/O response to the I/O request is returned. When issuing an I/O request in execution of a task, a DBMS selects any one of the synchronous I/O method and the asynchronous I/O method, based on an I/O response speed of an I/O destination storage device and issues an I/O request according to the selected I/O method.
    Type: Application
    Filed: March 28, 2014
    Publication date: January 5, 2017
    Inventors: Hideomi IDEI, Norifumi NISHIKAWA, Shinji FUJIWARA, Kazuhiko MOGI, Kazuo GODA, Masaru KITSUREGAWA
  • Publication number: 20160335321
    Abstract: A database management system determines whether an exhibition performance, which is a performance exhibited by execution of a query being in execution, satisfies a predetermined condition continuously on and after a certain time point, based on an execution state of the database management system. When the determination result is affirmative and there is an execution-waiting query, the database management system starts execution of the execution-waiting query before execution of the query being in execution ends.
    Type: Application
    Filed: March 28, 2014
    Publication date: November 17, 2016
    Inventors: Michiko YOSHIDA, Akira SHIMIZU, Shinji FUJIWARA, Kazuhiko MOGI, Kazuo GODA, Masaru KITSUREGAWA
  • Publication number: 20160171048
    Abstract: There is a storage apparatus which provides a storage area, comprises a cache memory, reads data into the cache memory from the storage area according to a read request and sends the data from the cache memory, and a computer is coupled to the storage apparatus. The computer receives a data processing request, determines an access usage based on the data processing request (or, the information relating to an access usage of the data processing request), selects a logical device corresponding to the determined access usage from a plurality of logical devices which are allocated to the storage area and issues a read request to the selected logical device.
    Type: Application
    Filed: August 29, 2013
    Publication date: June 16, 2016
    Inventors: Hideomi IDEI, Norifumi NISHIKAWA, Shinji FUJIWARA, Kazuhiko MOGI, Kazuo GODA, Masaru KITSUREGAWA
  • Publication number: 20160154848
    Abstract: Provided is a database management apparatus, having a processor, a memory, and a storage device, whereby a database which is stored in the storage device is managed, the database management apparatus further comprising: a query acceptance unit which accepts a query to the database; a query execution plan generating unit which generates a query execution plan which includes a database operation which is necessary for executing the accepted query; and a query execution unit which, in executing the accepted query on the basis of the generated query execution plan, dynamically generates a task for executing the database operation, and executes the dynamically generated task. The query execution unit acquires a resource usage state, and, when executing the next database operation, generates a new task on the basis of the resource usage state, and executes the new task in parallel with the task.
    Type: Application
    Filed: August 30, 2013
    Publication date: June 2, 2016
    Inventors: Akira SHIMIZU, Shinji FUJIWARA, Kazuhiko MOGI, Nobuo KAWAMURA, Kazuo GODA, Masaru KITSUREGAWA
  • Patent number: 9298394
    Abstract: According to this invention, a data arrangement method, the computer connected to a storage system which provides a plurality of logical storage devices comprising a plurality of physical storage devices arranges data in a logical storage volume constructed by integrating the plurality of logical storage devices. The method includes: a step wherein the computer receives an instruction to build the logical storage volume using the plurality of logical storage devices or to rebuild the constructed logical storage volume; a step wherein the computer obtains information about the plurality of physical storage devices constituting each of the plurality of logical storage devices included in the received instruction; and a step wherein the arrangement position of data into the logical storage volume is determined on the basis of the obtained information about the plurality of physical storage devices.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: March 29, 2016
    Assignee: HITACHI, LTD.
    Inventors: Seisuke Tokuda, Kazutomo Ushijima, Akira Shimizu, Michiko Tanaka, Shinji Fujiwara, Nobuo Kawamura
  • Publication number: 20160004727
    Abstract: A database management system receives a new data table input to a database; and executes unique constraint determination processing of determining whether each comparison-subject value as each value registered in a target column in the new data table is different from each comparison reference value as each value registered in a target column in a stored data table in the database, and stores the new data table in a second database area different from a first database area storing the stored data table in the database when a determination result obtained in the unique constraint determination processing is true.
    Type: Application
    Filed: August 22, 2013
    Publication date: January 7, 2016
    Applicant: HITACHI, LTD.
    Inventors: Takayuki TSUCHIDA, Akira SHIMIZU, Shinji FUJIWARA, Wataru KAWAI, Shinsuke HAMADA, Yuki YAMADA
  • Publication number: 20150177984
    Abstract: A management system manages a plurality of data units constituting schemas of a database in a storage device, which includes a plurality of first storage device sets having a plurality of storage areas. An ordered schema constituted of the plurality of data units having order properties defining respective orders is included in the schemas. When a second storage device set, which is a set of one or more second storage devices and in which each of the storage areas is a free storage area, is added to the first storage device set, the management system migrates two or more data units not consecutive in the order among a plurality of data units stored in the plurality of storage areas in the first storage device set respectively from at least the one first storage device set to the free storage areas of the second storage device set.
    Type: Application
    Filed: June 7, 2012
    Publication date: June 25, 2015
    Applicant: HITACHI, LTD.
    Inventors: Hideomi Idei, Norifumi Nishikawa, Shinji Fujiwara, Kazuhiko Mogi
  • Publication number: 20150169591
    Abstract: A database management system (DBMS) manages a database existing in a second storage device with an access speed lower than that of a first storage device. In an execution of a query, the DBMS dynamically generates tasks two or more executable tasks in parallel. The DBMS generates task start information which is information representing a content of the execution of the task, manages the task start information, and executes a content represented by the task start information by the task. The task start information includes a data address set existing in the second storage device. The DBMS controls movement of the data address sets between the first storage device and the second storage device based on a management state of the task start information. In addition, the DBMS selects the task start information based on whether or not the data address set exists in the first storage device.
    Type: Application
    Filed: May 24, 2012
    Publication date: June 18, 2015
    Applicants: THE UNIVERSITY OF TOKYO, HITACHI, LTD.
    Inventors: Michiko Yoshida, Akira Shimizu, Seisuke Tokuda, Kazuhiko Mogi, Shinji Fujiwara, Nobuo Kawamura, Masaru Kitsuregawa, Kazuo Goda
  • Publication number: 20150112966
    Abstract: A database management system (DBMS) generates a query execution plan including information indicating one or more database (DB) operations necessary to execute the query. The DBMS dynamically generates a task for executing the DB operation in execution of the query. The DBMS performs a determination processing of simultaneous-task-generation number when newly creating a task. The determination processing of simultaneous-task-generation number is to calculate the number of simultaneous task generation, which is the number of tasks that can be generated simultaneously, based on the number of tasks which can be newly generated, a first memory resource amount which is the amount of memory resources necessary to be allocated per task newly generated, and a second memory resource amount which is the number of memory resources that can be newly allocated. The number of tasks generated dynamically and simultaneously is equal to or smaller than the calculated number of simultaneously generatable tasks.
    Type: Application
    Filed: April 27, 2012
    Publication date: April 23, 2015
    Applicants: THE UNIVERSITY OF TOKYO, HITACHI, LTD.
    Inventors: Seisuke Tokuda, Akira Shimizu, Michiko Yoshida, Nobuo Kawamura, Shinji Fujiwara, Kazuhiko Mogi, Masaru Kitsuregawa, Kazuo Goda
  • Publication number: 20150112965
    Abstract: A database management system (DBMS) generates a query execution plan including information representing one or more database (DB) operations necessary for executing a query, and executes the query in accordance with the query execution plan. In the execution of the query, the DBMS dynamically generates tasks for executing the DB operations and executes the dynamically generated tasks. The query execution plan includes a plurality of query blocks, which are sets of one or more DB operations. When newly generating a task, the DBMS executes determination processing of simultaneous-task-generation number. The determination processing of simultaneous-task-generation number is to calculate, targeting each of the query blocks, the number of simultaneous task generation, which is the number of tasks simultaneously generatable as tasks for executing the query block. The number of the dynamically generated tasks is equal to or smaller than the number of simultaneous task generation.
    Type: Application
    Filed: April 27, 2012
    Publication date: April 23, 2015
    Applicants: The University of Tokyo, HITACHI, LTD.
    Inventors: Seisuke Tokuda, Akira Shimizu, Michiko Yoshida, Shinji Fujiwara, Kazuhiko Mogi, Masaru Kitsuregawa, Kazuo Goda
  • Publication number: 20150112967
    Abstract: A database management system (DBMS) generates a query execution plan including information representing one or more database (DB) operations necessary for executing a query and executes the query based on the query execution plan. In the execution of the query, the DBMS dynamically generates a task for executing a DB operation and executes the dynamically generated task. The DBMS executes a task in a plurality of threads executed by a processor core.
    Type: Application
    Filed: April 27, 2012
    Publication date: April 23, 2015
    Applicants: THE UNIVERSITY OF TOKYO, HITACHI, LTD.
    Inventors: Akira Shimizu, Seisuke Tokuda, Michiko Yoshida, Kazuhiko Mogi, Shinji Fujiwara, Nobuo Kawamura, Masaru Kitsuregawa, Kazuo Goda
  • Publication number: 20150113535
    Abstract: A parallel data processing system includes a parallel data processing execution unit for reading a data from a data set including a first data set that includes a plurality of first data and a second data set that includes a plurality of second data and executing processing. The parallel data processing execution unit (A) reads the first data from the first data set, and acquires a first value from the first data based on first format information acquired from an application, (B) generates one or more threads for respectively reading one or more second data corresponding to the first value from the second data set based on first reference information acquired from the application, (C) executes (A) and (B) on one or more first data in the first data set, and (D) executes a plurality of the threads in parallel.
    Type: Application
    Filed: May 31, 2012
    Publication date: April 23, 2015
    Applicants: HITACHI, LTD., THE UNIVERSITY OF TOKYO
    Inventors: Kazuo Goda, Hiroyuki Yamada, Masaru Kitsuregawa, Nobuo Kawamura, Shinji Fujiwara, Kazuhiko Mogi