| 摘要 |
PURPOSE: A battery pack usable as an input device is provided to operate a mobile direction and a displacement of the battery pack by an acceleration value obtained by an acceleration sensor, and to interface the operated results to a terminal body, thereby using the battery pack as an input device of the terminal body. CONSTITUTION: An acceleration sensor(110) senses a mobile change of a battery pack(100), and outputs an acceleration value for the mobile change. A movement calculator(120) operates the acceleration value, and calculates vertical and horizontal movements of the battery pack(100). A data input/output controller(130) outputs the vertical and horizontal movements of the battery pack(100) to a cellular phone body(200). A body interface(140) interfaces data between the data input/output controller(130) and the terminal body(200).
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