| 摘要 |
PROBLEM TO BE SOLVED: To automatically suppress message display in a user's busy period.SOLUTION: A use frequency measurement unit 25 measures the frequency of use by a user and automatically identifies a busy period. A message management unit 26 stores in a storage apparatus 17 a message to be displayed. When a specific message display timing comes, if the message display timing is out of the busy time, a display control unit 23 displays the message on the forefront surface, but if the message display timing is within the busy time, the display control unit 23 prohibits the message from being displayed on the forefront surface. |
