Display control device, display control system, and display control method

A display control system, comprising:

• a plurality of display control devices each for controlling a display of a display device mounted on a vehicle;
• and
• a server for managing a classification criterion used for classifying display information which is information to be displayed on the display device into confidential information and non-confidential information, for each attribute of a user,
• wherein each of the plurality of display control devices comprises:
• a processor to execute a program;
• and
• a memory to store the program which, when executed by the processor, performs processes of
• receiving the classification criterion in accordance with an attribute of a user from the server;
• classifying the display information into the confidential information and the non-confidential information on the basis of the received classification criterion;
• transmitting a classification status of the display information and attribute information indicating the attribute of the user to the server;
• and
• performing a display control of the display device so that the confidential information and the non-confidential information are displayed in a first display mode and the confidential information is not displayed and the non-confidential information is displayed in a second display mode, and
• the server updates the classification criterion for each attribute of the user on the basis of the classification status and the attribute information which are acquired from the plurality of display control devices.

A display control method of a display device mounted on a vehicle, which is performed by a server and a display control device, comprising:

• managing a classification criterion used for classifying display information of the display device into confidential information and non-confidential information, for each attribute of a user, by the server;
• receiving the classification criterion in accordance with the attribute of the user from the server, by the display control device;
• classifying the display information into the confidential information and the non-confidential information on the basis of the received classification criterion, by the display control device;
• performing a display control of the display device so that the confidential information and the non-confidential information are displayed in a first display mode and the confidential information is not displayed and the non-confidential information is displayed in a second display mode, by the display control device;
• transmitting a classification status of the display information and attribute information indicating the attribute of the user to the server, by the display control device;
• and
• updating the classification criterion for each attribute of the user on the basis of the classification status and the attribute information, by the server.