Ntt Docomo, Inc.

Takuya Doumen

Tomohiro Nakagawa

Kazuya Sasaki

Kazuma Nozawa

Chao Xue

Keita Hasegawa

In response to a request from a first device (), a management unit () transmits a data encryption key to the first device () through a secure environment between the management unit () and the first device () when integrity of a first application running in an isolated calculation area is verified. The first device () encrypts target data using the data encryption key and transmits encrypted target data to a second device () through the first application. In response to a request from the second device (), the management unit () transmits a data encryption key to the second device () through a secure environment between the management unit () and the second device () when integrity of a second application running in an isolated calculation area is verified. The second device () decrypts the encrypted target data using the data encryption key through the second application.

Information processing device and information processing system

An object of the present invention is to appropriately correct data based on position data acquired by positioning. A data correction deviceincludes an information storage unitthat stores position information including position data acquired by positioning and positioning information relating to the positioning, a filter generation unitthat generates a filter on the basis of the positioning information included in the position information stored by the information storage unit, and a data correction unitthat applies the filter generated by the filter generation uniton 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.

Data correction device

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.

Traffic amount estimation system

An object is to provide a moving route determination device that makes it possible to accurately determine a user's moving route. A server deviceincludes a geofence evaluation unitconfigured to store a scoring table for determining a moving route of a user terminal, a check-in log acquisition unitconfigured 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 terminalis located in a predetermined range, a settlement log, and a search log as a position management log, and a scoring determination unitconfigured to determine a moving route of the user terminalon the basis of the position management log and determination information stored in the geofence evaluation unitin 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.

Moving means determination device

An object is to provide a population distribution aggregation calculation device which can calculate a population distribution of high accuracy. A population distribution aggregation calculation device includes a narrow-area mesh group management unitconfigured to generate wide-area mesh data by acquiring the number of user terminals positioned in each predefined wide-area mesh using approximate positional information of a user terminal, and to generate narrow-area mesh data by acquiring the number of user terminals positioned in each of a plurality of narrow-area meshes obtained by dividing a wide-area mesh by a predetermined geographic resolution for each predetermined positional information acquisition pattern using detailed positional information stored in the positioning data accumulation unit, a reliability evaluation unitconfigured to calculate reliability of narrow-area mesh data for each positional information acquisition pattern on the basis of wide-area mesh data and narrow-area mesh data, and a population distribution estimation unitconfigured to estimate the number of terminals in a narrow-area mesh on the basis of the narrow-area mesh data and the wide-area mesh data according to the reliability.

Growing community of inventors

Chiyoda-ku, Japan

Takuya Doumen