An on-vehicle device, which is connected to an external image taking
device via the Internet so as to allow communication therebetween,
includes a communication section, a reception notification section, a
display section, a vehicle stopped state detection section, and a display
control section. When the communication section receives an emergency (or
call) detection notification from the image taking device, the display
control section checks the vehicle stopped state detection section to
determine whether or not a vehicle is stopped. If the vehicle is stopped,
the display control section receives video data from the image taking
device via the communication section for causing the display section to
display a video image of the video data. Otherwise, the display control
section notifies a user of an emergency (or call) detection notification
via the reception notification section.