| 摘要 |
A mobile telephone device (30) includes the TV viewing function as an additional function. A battery (7) supplies power to each circuit of the mobile telephone device (30). The battery (7) can cut off power supply to a tuner (4) by control of a base band chip (3). A battery remaining capacity monitoring device (11) outputs data indicating the battery remaining capacity. The base band chip (3) reads the data outputted from the battery remaining capacity monitoring device (11) so as to acquire the remaining capacity of the battery (7). When the remaining capacity of the battery (7) is found to be lower than a predetermined value, execution of the TV viewing function is disabled (power supply to the tuner (4) is cut off) and a menu and icons are displayed differently on a display device (6). |
