| 摘要 |
PROBLEM TO BE SOLVED: To secure non-voice communication functions besides the minimum voice communication function when the power supply capacity of a battery drops, and at the same time enable the use of other functions. SOLUTION: The portable communication terminal has a battery-monitoring circuit 2 for monitoring the drop of the power supply capacity of the battery 1, and a CPU 8 performs control for limiting the communication functions when the voltage drop of the battery 1 is detected by the battery-monitoring circuit 2. For example, when the drop of the power supply capacity in the battery is detected, the CPU 8 limits the communication time of voice communication to a fixed time, stops voice communication excluding the detection of an arrival signal, stops either or pluralities of a function for transmitting all or at least a certain level of data other than voice, a reception function, and a transmission/reception function, or the like. Also, the priority is given to communication, the voltage power supply capacity of the battery is detected to communication where the of priority is higher than a specific level, and the limitation of the communication function is cancelled temporarily when the communication function is limited. |
