A mobile unit input control apparatus can include an operation member, output means, determining means, display control means, input control means, and driving control means. A mode determining unit of the mobile unit input control apparatus can determine whether a driving mode is to be set or not and whether a text input mode is to be set or not in accordance with an operation signal supplied from an operation input apparatus and notifies it to an operation detecting unit. The operation detecting unit detects and analyzes the operation signal supplied from the operation input apparatus and outputs operation information as the analysis result to a text input control unit, for example. On the basis of the operation information, the text input control unit outputs a text input screen, for example, to the multi-display apparatus.