| 摘要 |
A portable electronic device includes a display, rotation detection unit, and coordinate rotation/transformation module. The display displays an image in a predetermined display direction. The rotation detection unit detects the displacement of a housing which stores the display, from a predetermined posture position by rotation. When the current posture position of the housing obtained from the rotation displacement detected by the rotation detection unit is the first posture position rotated through a predetermined angle from the predetermined posture position in a predetermined direction, the coordinate rotation/transformation module rotates the image so as to display it in the first display direction rotated through 90° from the predetermined display direction in the predetermined direction. A display direction switching method and recording medium are also disclosed. |
