Abstract: The present invention provides a battery monitoring method, which is performed by a battery monitoring device, including: measuring a first voltage drop across both ends of a first shunt resistor of a bus bar electrically connected to a battery and a second voltage drop across both ends of a second shunt resistor, which is in parallel or serial connection with the first shunt resistor; calculating a first current and a second current flowing, respectively, through the first shunt resistor and the second shunt resistor using a first voltage drop value and a second voltage drop value; and determining a state of the battery using a difference between a first current value and a second current value. According to the present invention, it is possible to increase the reliability of monitoring information related to the battery's state by utilizing current values that have undergone linearity compensation and temperature compensation.

Abstract: A method and apparatus for supporting an input function to a touchscreen-based device when the touch interface malfunctions are provided. The input function supporting method includes detecting an input operation via a function key, determining, when the input operation is performed via the function key, an input manner of the input operation via the function key, changing, when the input manner of the input operation via the function key corresponds to a preset manner, a current mode to an emergency input mode, and processing a function, according to another input operation of the same or another function key, in the emergency input mode.

Abstract: A mobile commerce execution method and apparatus using a mobile device and an external mobile commerce module is provided. The method for executing mobile commerce includes detecting, at the mobile device, a connection of an external module, determining whether the external module is a mobile commerce module, activating a mobile commerce function by exchanging control signals with the mobile commerce module, and executing an operation according to a key input.