Patents by Inventor Takuya DOUMEN
Takuya DOUMEN 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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Patent number: 12494903Abstract: In response to a request from a first device (100), a management unit (300) transmits a data encryption key to the first device (100) through a secure environment between the management unit (300) and the first device (100) when integrity of a first application running in an isolated calculation area is verified. The first device (100) encrypts target data using the data encryption key and transmits encrypted target data to a second device (200) through the first application. In response to a request from the second device (200), the management unit (300) transmits a data encryption key to the second device (200) through a secure environment between the management unit (300) and the second device (200) when integrity of a second application running in an isolated calculation area is verified. The second device (200) decrypts the encrypted target data using the data encryption key through the second application.Type: GrantFiled: November 29, 2022Date of Patent: December 9, 2025Assignee: NTT DOCOMO, INC.Inventors: Keita Hasegawa, Kazuma Nozawa, Takuya Doumen, Tomohiro Nakagawa, Hiroshi Aono, Masayuki Terada
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Patent number: 12464485Abstract: An object of the present invention is to appropriately correct data based on position data acquired by positioning. A data correction device 1 includes an information storage unit 11 that stores position information including position data acquired by positioning and positioning information relating to the positioning, a filter generation unit 13 that generates a filter on the basis of the positioning information included in the position information stored by the information storage unit 11, and a data correction unit 14 that applies the filter generated by the filter generation unit 13 on the basis of the positioning information included in the position information to data based on the position data included in the position information to thereby correct the data.Type: GrantFiled: September 29, 2020Date of Patent: November 4, 2025Assignee: NTT DOCOMO, INC.Inventors: Tomohiro Nakagawa, Takuya Doumen, Kazuya Sasaki
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Publication number: 20250132902Abstract: In response to a request from a first device (100), a management unit (300) transmits a data encryption key to the first device (100) through a secure environment between the management unit (300) and the first device (100) when integrity of a first application running in an isolated calculation area is verified. The first device (100) encrypts target data using the data encryption key and transmits encrypted target data to a second device (200) through the first application. In response to a request from the second device (200), the management unit (300) transmits a data encryption key to the second device (200) through a secure environment between the management unit (300) and the second device (200) when integrity of a second application running in an isolated calculation area is verified. The second device (200) decrypts the encrypted target data using the data encryption key through the second application.Type: ApplicationFiled: November 29, 2022Publication date: April 24, 2025Applicant: NTT DOCOMO, INC.Inventors: Keita HASEGAWA, Kazuma NOZAWA, Takuya DOUMEN, Tomohiro NAKAGAWA, Hiroshi AONO, Masayuki TERADA
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Patent number: 12231988Abstract: A traffic amount estimation system is a traffic amount estimation system that estimates a traffic amount of people in a predetermined time frame in an area that is an estimation target set in advance, the traffic amount estimation system including: a population information acquiring unit configured to acquire population information representing a population at a predetermined timing in the area that is the estimation target; a movement state information acquiring unit configured to acquire movement state information representing a movement state of each of a plurality of people in the area that is the estimation target; and an estimation unit configured to group the movement state information in accordance with moving directions represented by the movement state information and estimate the traffic amount on the basis of the grouped movement state information and the population information.Type: GrantFiled: April 17, 2020Date of Patent: February 18, 2025Assignee: NTT DOCOMO, INC.Inventors: Takuya Doumen, Tomohiro Nakagawa, Kazuya Sasaki
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Patent number: 11895559Abstract: An object is to provide a moving route determination device that makes it possible to accurately determine a user's moving route. A server device 100 includes a geofence evaluation unit 105 configured to store a scoring table for determining a moving route of a user terminal 200, a check-in log acquisition unit 103 configured to acquire at least one of a check-in log which is a history of position management information, such as check-in information, settlement information, or search information, indicating that the user terminal 200 is located in a predetermined range, a settlement log, and a search log as a position management log, and a scoring determination unit 106 configured to determine a moving route of the user terminal 200 on the basis of the position management log and determination information stored in the geofence evaluation unit 105 in a case where a moving means is not able to be determined from at least one of the check-in log, the settlement log, and the search log.Type: GrantFiled: July 23, 2019Date of Patent: February 6, 2024Assignee: NTT DOCOMO, INC.Inventors: Tomohiro Nakagawa, Takuya Doumen, Chao Xue
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Patent number: 11805393Abstract: An object is to provide a population distribution aggregation calculation device which can calculate a population distribution of high accuracy.Type: GrantFiled: July 16, 2019Date of Patent: October 31, 2023Assignee: NTT DOCOMO, INC.Inventors: Tomohiro Nakagawa, Takuya Doumen, Kazuya Sasaki
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Publication number: 20220322275Abstract: An object of the present invention is to appropriately correct data based on position data acquired by positioning. A data correction device 1 includes an information storage unit 11 that stores position information including position data acquired by positioning and positioning information relating to the positioning, a filter generation unit 13 that generates a filter on the basis of the positioning information included in the position information stored by the information storage unit 11, and a data correction unit 14 that applies the filter generated by the filter generation unit 13 on the basis of the positioning information included in the position information to data based on the position data included in the position information to thereby correct the data.Type: ApplicationFiled: September 29, 2020Publication date: October 6, 2022Applicant: NTT DOCOMO, INC.Inventors: Tomohiro NAKAGAWA, Takuya DOUMEN, Kazuya SASAKI
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Publication number: 20220301003Abstract: An area specifying system is a system for specifying an area in which information presented by an information medium is recognizable as the information, and includes a medium position information acquisition unit configured to acquire medium position information indicating a position in which the information medium is provided, an area specifying information acquisition unit configured to acquire area specifying information related to at least one of attributes of the information medium and content of the information presented by the information medium, and a specifying unit configured to specify the area based on the medium position information acquired by the medium position information acquisition unit and the area specifying information acquired by the area specifying information acquisition unit.Type: ApplicationFiled: April 28, 2020Publication date: September 22, 2022Applicant: NTT DOCOMO, INC.Inventors: Tomohiro NAKAGAWA, Takuya DOUMEN, Kazuya SASAKI
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Publication number: 20220232348Abstract: A traffic amount estimation system is a traffic amount estimation system that estimates a traffic amount of people in a predetermined time frame in an area that is an estimation target set in advance, the traffic amount estimation system including: a population information acquiring unit configured to acquire population information representing a population at a predetermined timing in the area that is the estimation target; a movement state information acquiring unit configured to acquire movement state information representing a movement state of each of a plurality of people in the area that is the estimation target; and an estimation unit configured to group the movement state information in accordance with moving directions represented by the movement state information and estimate the traffic amount on the basis of the grouped movement state information and the population information.Type: ApplicationFiled: April 17, 2020Publication date: July 21, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuya DOUMEN, Tomohiro NAKAGAWA, Kazuya SASAKI
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Publication number: 20220007143Abstract: An object is to provide a population distribution aggregation calculation device which can calculate a population distribution of high accuracy.Type: ApplicationFiled: July 16, 2019Publication date: January 6, 2022Applicant: NTT DOCOMO, INC.Inventors: Tomohiro NAKAGAWA, Takuya DOUMEN, Kazuya SASAKI
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Publication number: 20210385616Abstract: An object is to provide a moving route determination device that makes it possible to accurately determine a user's moving route. A server device 100 includes a geofence evaluation unit 105 configured to store a scoring table for determining a moving route of a user terminal 200, a check-in log acquisition unit 103 configured to acquire at least one of a check-in log which is a history of position management information, such as check-in information, settlement information, or search information, indicating that the user terminal 200 is located in a predetermined range, a settlement log, and a search log as a position management log, and a scoring determination unit 106 configured to determine a moving route of the user terminal 200 on the basis of the position management log and determination information stored in the geofence evaluation unit 105 in a case where a moving means is not able to be determined from at least one of the check-in log, the settlement log, and the search log.Type: ApplicationFiled: July 23, 2019Publication date: December 9, 2021Applicant: NTT DOCOMO, INC.Inventors: Tomohiro NAKAGAWA, Takuya DOUMEN, Chao XUE