Mobile Communication Terminal and Control Method Thereof

A mobile communication terminal, comprising:

• a first wireless communication unit corresponding to a first wireless communication system;
• an interface capable of detachably connecting a second wireless communication unit corresponding to a second wireless communication system and consuming less power than the first wireless communication unit;
• a battery voltage detection unit for detecting battery voltage of a power supply unit containing a battery;
• and
• a control unit for controlling the first wireless communication unit to be in a disabled state when the first and the second wireless communication units are communicating and the battery voltage detected by the battery voltage detection unit is equal to or less than a fourth predetermined value.

A mobile communication terminal, comprising:

• a first wireless communication unit corresponding to a first wireless communication system;
• an interface capable of detachably connecting an external apparatus;
• a determination unit for determining whether the external apparatus connected to the interface corresponds to a second wireless communication system and is a second wireless communication unit that consumes less power than the first wireless communication unit;
• a battery voltage detection unit for detecting battery voltage of a power supply unit containing a battery;
• and
• a control unit for controlling the first wireless communication unit to be in a disabled state when the first wireless communication unit is communicating mainly for reception and the battery voltage detected by the battery voltage detection unit is equal to or less than an eighth predetermined value, in a case where the determination unit determines that the second wireless communication unit is connected.

A mobile communication terminal, comprising:

• a first wireless communication unit corresponding to a first wireless communication system;
• an interface capable of detachably connecting a second wireless communication unit corresponding to a second wireless communication system and consuming less power than the first wireless communication unit;
• a battery voltage detection unit for detecting battery voltage of a power supply unit containing a battery;
• and
• a control unit for controlling the first wireless communication unit to be in a disabled state when the battery voltage detected by the battery voltage detection unit is equal to or less than an eleventh predetermined value, in a case where the first wireless communication unit is in a standby state of the first wireless communication system and the second wireless communication unit is communicating.

A control method of a mobile communication terminal comprising a first wireless communication unit corresponding to a first wireless communication system, an interface capable of detachably connecting an external apparatus and a power supply unit containing a battery, comprising:

• a determination step of determining whether the external apparatus connected to the interface corresponds to a second wireless communication system and is a second wireless communication unit that consumes less power than the first wireless communication unit;
• a communication state detection step of detecting a communication state of the first wireless communication unit;
• a battery voltage detection step of detecting battery voltage of the power supply unit;
• and
• a control step of controlling the first wireless communication unit to be in a disabled state when it is detected that the first wireless communication unit is communicating at the communication state detection step and the battery voltage detected at the battery voltage detection step is equal to or less than a first predetermined value, in a case where it is determined that the second wireless communication unit is connected at the determination step.

A control method of a mobile communication terminal comprising a first wireless communication unit corresponding to a first wireless communication system, a second wireless communication unit corresponding to a second wireless communication system and detachably connected via an interface and a power supply unit containing a battery, comprising:

• a communication state detection step of detecting a communication state of the first and the second wireless communication units;
• a battery voltage detection step of detecting battery voltage of the power supply unit;
• and
• a control step of controlling the first wireless communication unit to be in a disabled state when it is detected that the first and the second wireless communication units are communicating at the communication state detection step and the battery voltage detected at the battery voltage detection step is equal to or less than a fourth predetermined value.

A control method of a mobile communication terminal comprising a first wireless communication unit corresponding to a first wireless communication system, an interface capable of detachably connecting an external apparatus and a power supply unit containing a battery, comprising:

• a determination step of determining whether the external apparatus connected to the interface corresponds to a second wireless communication system and is a second wireless communication unit that consumes less power than the first wireless communication unit;
• a communication state detection step of detecting a communication state of the first wireless communication unit;
• a battery voltage detection step of detecting battery voltage of the power supply unit;
• and
• a control step of controlling the first wireless communication unit to be in a disabled state when it is detected that the first wireless communication unit is communicating mainly for reception at the communication state detection step and the battery voltage detected at the battery voltage detection step is equal to or less than a eighth predetermined value, in a case where it is determined that the second wireless communication unit is connected at the determination step.

A control method of a mobile communication terminal comprising a first wireless communication unit corresponding to a first wireless communication system, a second wireless communication unit corresponding to a second wireless communication system and detachably connected via an interface and a power supply unit containing a battery, comprising the steps of:

• a communication state detection step of detecting a communication state of the first and the second wireless communication units;
• a battery voltage detection step of detecting battery voltage of the power supply unit;
• and
• a control step of controlling the first wireless communication unit to be in a disabled state when the battery voltage detected at the battery voltage detection step is equal to or less than an eleventh predetermined value in a case where it is detected that the first wireless communication unit is in a standby state of the first wireless communication system and the second wireless communication unit is communicating at the communication state detection step.