| 摘要 |
This invention relates to a portable terminal equipment using a battery as a power source. The equipment determines whether or not battery voltage VB is lower than a voltage value V1 in a standby state or a speaking state (ST1 and ST8). The voltage value V1 is set to such a value that the equipment is capable of generating an outgoing call and making a speech during a set period of time, when the battery voltage VB is equal to the value V1. When VB<V1, the equipment shifts to a low-consumption standby mode in which a small amount of current is consumed (ST14). When the equipment is set to a speaking state, it generates a warning by means of alerting voice and so on to warn the user that the telephone communication will be broken after a expiration of a set period of time (ST10). Further, the equipment breaks the telephone communication (ST15) after the set period of time, for example, one minute (ST12) has elapsed since said the warning and then the equipment shifts to the low-consumption standby mode (ST14). Therefore, the user can generate another outgoing call after a break of the telephone communication and the possibility of generating the outgoing call at any necessary time increases. When a set period of time, for example, one minute has elapsed since the equipment is brought into the speaking state by the outgoing call generated from the low-consumption standby mode, the telephone communication is broken after warning to the user the break of telephone communication with the alerting voice, etc. and then the operation of telephone main body is stopped. <IMAGE> |
