| 摘要 |
Mobile terminal device has a display rotation function for rotating a direction of an image on a screen so that the downward direction of the image fits the vertical downward direction in the real world. While no touch of a finger of a user is detected, the display rotation function remains on, and when a touch of the user is detected, the display rotation function is turned off. When the user does not wish to use the display rotation function, the user can temporarily turn off the display rotation function simply by maintaining his/her finger in contact with the screen, and when the user wishes to use the display rotation function, the user can turn on the display rotation function simply by releasing his/her finger from the screen. |
