Patent ID: 8725819

Claim:
An information processing unit of a chat system where the information processing unit and a server device are connected allowing transmission and reception of message data via a network, said information processing unit comprising: a storage unit for storing room-specific information, which allows the information processing unit in the chat system to specify one or more available chat rooms, and room attribute information associated with the room-specific information; and a display controller for displaying on a display means the room attribute information and room corresponding images corresponding to the room-specific information in a mode allowing visible confirmation that the room-specific information and the room attribute information are associated, where the room attribute information includes information indicating whether or not a user of the information processing unit previously participated in one or more of the chat rooms, wherein the display controller operates to display on the display means a room selection screen with the room corresponding images corresponding to the available chat rooms specified by the room specific information stored in the storage unit.