Patents by Inventor Fumihiko Kozakura
Fumihiko Kozakura 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).
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Publication number: 20240097447Abstract: A non-transitory computer-readable recording medium storing a power transaction program for causing a computer to execute processing of storing, in a blockchain, transaction information between a supply side and a demand side of power, the processing including: determining a supply amount by dividing a power resource on the supply side by aggregate period; determining a demand amount of a plurality of customers who demand the power resource on the demand side; determining a surplus power that is a difference between the supply amount and the demand amount; generating, by using zero-knowledge protocol, the transaction information based on the supply amount, the demand amount, to store generated transaction information in the blockchain.Type: ApplicationFiled: June 16, 2023Publication date: March 21, 2024Applicant: Fujitsu LimitedInventor: Fumihiko KOZAKURA
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Patent number: 11843701Abstract: A non-transitory computer-readable recording medium stores a generation program for causing a computer to execute a process including: dividing a target content into a plurality of blocks so that head information of the target content is distributed to the blocks different from each other, according to a predetermined rule; generating a hash value corresponding to each of the plurality of divided blocks; generating an aggregation hash value by aggregating the generated hash values; and outputting the generated aggregation hash value.Type: GrantFiled: June 3, 2021Date of Patent: December 12, 2023Assignee: Fujitsu LimitedInventor: Fumihiko Kozakura
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Publication number: 20230325823Abstract: A data storage method including: acquiring first data indicating a production record of a transaction resource produced by a producer and second data indicating a consumption record of the transaction resource consumed by a consumer; generating proof information proving that a condition of consistency between the first data and the second data is satisfied regarding allocation of the transaction resource for the production record of the producer as a supplier of the transaction resource for the consumption record of the consumer; generating third data that includes the proof information and has a data size smaller than a total data size of the first data and the second data; and storing a transaction record that includes the third data and indicates that the transaction resource is consumed by the consumer, in a blockchain storing a transaction history of a supply right of the transaction resource produced by the producer.Type: ApplicationFiled: May 24, 2023Publication date: October 12, 2023Applicant: FUJITSU LIMITEDInventors: Takeshi MIYAMAE, Fumihiko KOZAKURA
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Publication number: 20220207625Abstract: A control method executed on a computer controls a transaction of electric power between a first consumer and a second consumer different from the first consumer, wherein the first consumer and the second consumer receives a request for electric power saving from an aggregator. The method includes obtaining a first amount of electric power as an amount of electric power to be purchased by the first consumer; obtaining a second amount of electric power that can be sold by the second consumer; and controlling the transaction of electric power between the first and second consumers, even when the second amount is greater than or equal to the first amount, according to a comparison result between a predicted value of shortage of electric power with respect to a target of electric power saving, and a measured value of the shortage of electric power at the first consumer.Type: ApplicationFiled: March 16, 2022Publication date: June 30, 2022Applicant: FUJITSU LIMITEDInventor: Fumihiko Kozakura
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Publication number: 20220103372Abstract: A non-transitory computer-readable recording medium has stored therein a program that causes a computer to execute a process, the process including acquiring a check program for checking data processing on data from a server in a blockchain network, executing the check program, giving a first signature of the server to a check result generated by executing the data processing during the execution of the check program, and publishing the check result with the first signature in the blockchain network.Type: ApplicationFiled: June 18, 2021Publication date: March 31, 2022Applicant: FUJITSU LIMITEDInventor: Fumihiko KOZAKURA
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Publication number: 20220014380Abstract: A non-transitory computer-readable recording medium stores a generation program for causing a computer to execute a process including: dividing a target content into a plurality of blocks so that head information of the target content is distributed to the blocks different from each other, according to a predetermined rule; generating a hash value corresponding to each of the plurality of divided blocks; generating an aggregation hash value by aggregating the generated hash values; and outputting the generated aggregation hash value.Type: ApplicationFiled: June 3, 2021Publication date: January 13, 2022Applicant: FUJITSU LIMITEDInventor: Fumihiko KOZAKURA
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Publication number: 20200175615Abstract: An electric power trade apparatus includes a memory and a processor. The processor is configured to perform determining whether it is possible to make a purchase concerning a purchase amount indicated in purchase requests received from respective purchasers of electric power having received a power-saving request, on the basis of the purchase amount and a sellable amount indicated in sale requests received from respective sellers of electric power, upon receiving the purchase requests, transmitting information for enabling any given one of the purchasers to make a reply to the power-saving request upon determining that purchase concerning a corresponding one of the purchase requests is possible, and allocating, to the sale requests, respective sale amounts a sum of which is equal to the purchase amount, on the basis of the purchase amount and the sellable amount after the information is transmitted.Type: ApplicationFiled: November 26, 2019Publication date: June 4, 2020Applicant: FUJITSU LIMITEDInventors: Fumihiko Kozakura, Shingo Fujimoto
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Patent number: 10409992Abstract: An investigation apparatus according to an embodiment includes a processor that executes a process including: analyzing uniqueness of a plurality of values included in an attribute for each attribute of a table; reducing a plurality of values included in an attribute of which the analyzed uniqueness is lower than a predetermined value by a predetermined ratio with respect to an investigation original table and outputting a feature of the investigation original table; reducing a plurality of values included in an attribute of which the analyzed uniqueness is higher than a predetermined value by a predetermined ratio with respect to an investigation target table and outputting a feature of the investigation target table; and investigating similarity of the investigation target table to the investigation original table by comparing the feature of the investigation original table with the feature of the investigation target table.Type: GrantFiled: September 14, 2016Date of Patent: September 10, 2019Assignee: FUJITSU LIMITEDInventors: Fumihiko Kozakura, Kouiohi Itoh
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Patent number: 10025784Abstract: A determination apparatus has a feature extraction unit and a similarity determination unit. The feature extraction unit counts a number of appearances of each keyword included in a piece of document information and deletes any arrangement including a keyword having the number of appearances less than a threshold under a condition where a number of types of keyword arrangements included in a certain range of the piece of document information is equal to or greater than a certain number and extracts, as features, a plurality of keyword arrangements from the piece of document information. The similarity determination unit determines a similarity between the different pieces of document information by comparing the features extracted from pieces of document information different from each other.Type: GrantFiled: December 14, 2015Date of Patent: July 17, 2018Assignee: FUJITSU LIMITEDInventors: Fumihiko Kozakura, Kouichi Itoh
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Publication number: 20170109535Abstract: An investigation apparatus according to an embodiment includes a processor that executes a process including: analyzing uniqueness of a plurality of values included in an attribute for each attribute of a table; reducing a plurality of values included in an attribute of which the analyzed uniqueness is lower than a predetermined value by a predetermined ratio with respect to an investigation original table and outputting a feature of the investigation original table; reducing a plurality of values included in an attribute of which the analyzed uniqueness is higher than a predetermined value by a predetermined ratio with respect to an investigation target table and outputting a feature of the investigation target table; and investigating similarity of the investigation target table to the investigation original table by comparing the feature of the investigation original table with the feature of the investigation target table.Type: ApplicationFiled: September 14, 2016Publication date: April 20, 2017Applicant: FUJITSU LIMITEDInventors: Fumihiko Kozakura, Kouichi ITOH
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Publication number: 20160210339Abstract: A determination apparatus has a feature extraction unit and a similarity determination unit. The feature extraction unit counts a number of appearances of each keyword included in a piece of document information and deletes any arrangement including a keyword having the number of appearances less than a threshold under a condition where a number of types of keyword arrangements included in a certain range of the piece of document information is equal to or greater than a certain number and extracts, as features, a plurality of keyword arrangements from the piece of document information. The similarity determination unit determines a similarity between the different pieces of document information by comparing the features extracted from pieces of document information different from each other.Type: ApplicationFiled: December 14, 2015Publication date: July 21, 2016Inventors: Fumihiko Kozakura, Kouichi Itoh
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Patent number: 8997183Abstract: To allow inspecting whether a security check of a planned outgoing email is finished in an outgoing email check system, a check data providing apparatus 2 of an outgoing email check system 100 stores check information distributed from a check information management apparatus 1, appends check data generated based on the check information to a header of a checked planned outgoing email, and transmits the email to an email transmitting apparatus 9. A check data inspecting apparatus 3 stores the check information distributed from the check information management apparatus 1, inspects the check data extracted from the planned outgoing email received from the email transmitting apparatus 9 based on the check information, determines that the transmission is permitted when the check data of the planned outgoing email matches the check information, and determines that the transmission is rejected when the check data does not match the check information.Type: GrantFiled: March 30, 2010Date of Patent: March 31, 2015Assignees: Fujitsu Limited, Fujitsu Social Science Laboratory LimitedInventors: Ryota Fukasawa, Aya Higashizono, Natsu Hashisaka, Masayoshi Okamoto, Kiyoshi Kurashige, Hiroshi Tsuda, Yoshinori Katayama, Fumihiko Kozakura, Shinichi Mochizuki
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Patent number: 8925046Abstract: A device includes a memory which stores a program, and a processor which executes, based on the program, a procedure comprising establishing a session with a request source when a request for a service, made to a second providing source, has been received from the request source, the second providing source providing the service based on data stored in a first providing source; and when an inquiry about whether to transmit the data to the second providing source has been received from the first providing source, notifying, so as to encrypt a mask range of the data, the first providing source of session information indicating the session established with the request source and notifying the request source of the session information so as to decrypt the encrypted mask range of data based on the session information.Type: GrantFiled: February 25, 2013Date of Patent: December 30, 2014Assignee: Fujitsu LimitedInventors: Takao Ogura, Fumihiko Kozakura
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Publication number: 20130312067Abstract: A device includes a memory which stores a program, and a processor which executes, based on the program, a procedure comprising establishing a session with a request source when a request for a service, made to a second providing source, has been received from the request source, the second providing source providing the service based on data stored in a first providing source; and when an inquiry about whether to transmit the data to the second providing source has been received from the first providing source, notifying, so as to encrypt a mask range of the data, the first providing source of session information indicating the session established with the request source and notifying the request source of the session information so as to decrypt the encrypted mask range of data based on the session information.Type: ApplicationFiled: February 25, 2013Publication date: November 21, 2013Applicant: FUJITSU LIMITEDInventors: Takao OGURA, Fumihiko KOZAKURA
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Patent number: 8095608Abstract: An email wrong transmission preventing apparatus calculates memory ratios of addresses of emails in a transmission log by a model expression in which the memory ratios decline over time, compiles the memory ratios of the emails for each destination to set weights, and records the weights in a user weight list. When receiving a planned outgoing email, the apparatus compares the weight of the destination of the planned outgoing email obtained by referring to the user weight list with a predetermined threshold and determines that the destination is “reliable” only if the weight is over the threshold. If even one of the destinations of the planned outgoing email is not “reliable”, the apparatus causes a sender terminal to display an address check screen to prompt address checking. When “checked” is inputted, the apparatus transfers the planned outgoing email to an email transmission server.Type: GrantFiled: March 9, 2010Date of Patent: January 10, 2012Assignees: Fujitsu Limited, Fujitsu Social Science Laboratory LimitedInventors: Ryota Fukasawa, Aya Higashizono, Natsu Hashisaka, Masayoshi Okamoto, Kiyoshi Kurashige, Hiroshi Tsuda, Yoshinori Katayama, Fumihiko Kozakura
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Publication number: 20110067102Abstract: To allow inspecting whether a security check of a planned outgoing email is finished in an outgoing email check system, a check data providing apparatus 2 of an outgoing email check system 100 stores check information distributed from a check information management apparatus 1, appends check data generated based on the check information to a header of a checked planned outgoing email, and transmits the email to an email transmitting apparatus 9. A check data inspecting apparatus 3 stores the check information distributed from the check information management apparatus 1, inspects the check data extracted from the planned outgoing email received from the email transmitting apparatus 9 based on the check information, determines that the transmission is permitted when the check data of the planned outgoing email matches the check information, and determines that the transmission is rejected when the check data does not match the check information.Type: ApplicationFiled: March 30, 2010Publication date: March 17, 2011Applicants: FUJITSU LIMITED, FUJITSU SOCIAL SCIENCE LABORATORY LIMITEDInventors: Ryota Fukasawa, Aya Higashizono, Natsu Hashisaka, Masayoshi Okamoto, Kiyoshi Kurashige, Hiroshi Tsuda, Yoshinori Katayama, Fumihiko Kozakura, Shinichi Mochizuki
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Publication number: 20100235452Abstract: An email wrong transmission preventing apparatus calculates memory ratios of addresses of emails in a transmission log by a model expression in which the memory ratios decline over time, compiles the memory ratios of the emails for each destination to set weights, and records the weights in a user weight list. When receiving a planned outgoing email, the apparatus compares the weight of the destination of the planned outgoing email obtained by referring to the user weight list with a predetermined threshold and determines that the destination is “reliable” only if the weight is over the threshold. If even one of the destinations of the planned outgoing email is not “reliable”, the apparatus causes a sender terminal to display an address check screen to prompt address checking. When “checked” is inputted, the apparatus transfers the planned outgoing email to an email transmission server.Type: ApplicationFiled: March 9, 2010Publication date: September 16, 2010Applicants: FUJITSU LIMITED, FUJITSU SOCIAL SCIENCE LABORATORY LIMITEDInventors: Ryota Fukasawa, Aya Higashizono, Natsu Hashisaka, Masayoshi Okamoto, Kiyoshi Kurashige, Hiroshi Tsuda, Yoshinori Katayama, Fumihiko Kozakura
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Patent number: 7392468Abstract: Based on reference information of a structured-document application program, structure information and contents of a structured document to be delivered are specified separately. Based on the specification, the structure information and the contents are obtained from a database which stores the structured document, to generate the structured document to be delivered. The generated structured document is delivered to the structured-document application program.Type: GrantFiled: August 6, 2004Date of Patent: June 24, 2008Assignee: Fujitsu LimitedInventors: Nobuyuki Igata, Fumihiko Kozakura, Yoshio Nakao
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Publication number: 20070220145Abstract: A proxy server stores therein an access prohibiting list; analyzes contents requested by a user; extracts link information included in the contents; checks whether the link information includes an access-prohibited URL included in the access prohibiting list; deletes the link information if it includes the access-prohibited URL; and sends the remaining contents to a client computer.Type: ApplicationFiled: July 5, 2006Publication date: September 20, 2007Applicant: FUJITSU LIMITEDInventors: Fumihiko Kozakura, Fumihito Nishino
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Publication number: 20050076053Abstract: Metadata related to a plurality of persons is extracted from among electronic data that include information about the persons. The metadata extracted is linked based on a co-occurrence of the information about the persons in the electronic data. Relationship between the persons is displayed graphically based on the metadata linked.Type: ApplicationFiled: February 19, 2004Publication date: April 7, 2005Applicant: Fujitsu LimitedInventors: Yoshinori Katayama, Fumihiko Kozakura, Hiroshi Tsuda