Control information management device and remote control system

A control information management device for managing control information issued from each of a plurality of control terminals to an electronic device remotely controllable from the plurality of control terminals, the control information management device comprising:

• memory circuitry to store the control information for each of the control terminals;
• notification necessity determination circuitry to, when additional control information is issued from one of the control terminals to the electronic device, determine, on a basis of the control information stored in the memory circuitry, whether content of the additional control information should be notified to other control terminals, for each of the other control terminals;
• and
• notification circuitry to notify the content of the additional control information to a control terminal for which notification has been determined to be necessary by the notification necessity determination circuitry, wherein
• the control information includes a control date-time and a setting value relating to a control detail of each of remotely controllable applicable functions of the electronic device, and
• when the additional control information is issued from one of the control terminals to the electronic device, the notification necessity determination circuitry determines, for each of the other control terminals, whether a difference between a latest control date-time stored in the memory circuitry and a control date-time included in the additional control information falls within a predetermined time period, and the notification necessity determination circuitry determines whether a difference exceeds a predetermined threshold, the difference being a difference between a setting value relating to a latest control detail stored in the memory circuitry and a setting value relating to a control detail included in the additional control information with respect to an applicable function controlled by the additional control information, and the notification necessity determination circuitry determines that the content of the additional control information should be notified to a control terminal having the difference in the control date-time determined to fall within the predetermined time period and having the difference in the setting value relating to the control detail determined to exceed the predetermined threshold.