Chat system, communication device, control method thereof and computer-readable information storage medium

摘要

The invention provides a chat system in which a change in the emotion of a sender is judged by a simple construction and can be outputted on a signal receiving side. Therefore, the chat system is comprising plural devices and inputs a message character string in each device and transmits the message character string to another device and receives and outputs the message character string in this another device. The chat system includes a device for determining a emotion level in accordance with a passing time from the input timing of a certain message character string to the input timing of another message character string; and a device for outputting at least one of an image and a sound according to the determined emotion level in this another device.