Patent ID: 7425813
Filing Date: 2008-09-16
Classification: H01M,Y02E

Abstract:
1. A battery pack comprising: connection terminals, which are connected to an electronic device, for supplying electrical power to the device, and which are connected to a charger so as to charge the battery pack; a communication terminal for performing data communication with said electronic device; a cartridge insertion section to which a cartridge can be inserted, wherein the cartridge has a function expansion means for expanding a number and a type of functions of said electronic device; a function expansion terminal for connection with said cartridge inserted into said cartridge insertion section; and expansion function operation means for operating the function expansion means of said cartridge connected to said function expansion terminal in accordance with a control signal of said electronic device, which is sent via said communication terminal, thereby enabling an additional function of the electronic device, wherein the electronic device is placed in a function expansion mode upon receiving function selection data from the function expansion cartridge and displays the additional function in a function selection menu, and wherein when the communication terminal transfers expansion function information sent from the cartridge to the electronic device, the electronic device displays a first menu to a user for turning on/off a function expansion setting and further displays a second menu to the user for selecting an expansion function from a plurality of expansion functions.