Patent ID: 8126397

Claim:
A mobile terminal comprising: a main unit having an input unit, a first short range communication unit, a memory for storing data received or to be transmitted through the first short range communication unit, a radio frequency unit for establishing a radio channel with a mobile communication system, and a control unit for controlling communication between the first short range communication unit, memory, and radio frequency unit; and a sub-unit having a second short range communication unit for establishing a wireless channel to the first short range communication unit, and having a plurality of function units for executing various functions of the mobile terminal, wherein one of the plurality of function units transmits a message having a source address as an address of the function unit and a destination address as an address of the control unit through the wireless channel, wherein the control unit receives the message, analyzes the message based on the source address of the message, formats the message, and transmits the formatted message having the address of the control unit as a source address of the formatted message and an address of a corresponding function unit according to the source address of the message as a destination address of the formatted message through the wireless channel, and wherein the corresponding function unit receives and processes the formatted message.