| 摘要 |
A portable electronic apparatus (300) has first and second display areas (321, 322). The apparatus has an orientation sensor (310) that provides an orientation sensor output signal (312) indicative of a spatial orientation of the apparatus. The apparatus also has a display controller (301) coupled to the first and second display areas (321, 322) and to the orientation sensor. The display controller controls the first display area and the second display area in either a first display state or a second display state, with less display activity than the first display state. When a movement of the portable electronic apparatus has been determined from the orientation sensor output signal, one of the first and second display areas is switched from the first display state to the second display state, whereas the other display area is switched from the second display state to the first display state. Specifically, the other display area is first switched from the second display state to the first display state, and then, during a transition time period, both display areas are maintained in the first display state. The transition time period is a function of a speed of the determined movement of the portable electronic apparatus. Finally, after the transition time period has lapsed, the one display area is switched from the first display state to the second display state.
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