Abstract: Disclosed is a method of measuring the amount of exercise using a mobile communication terminal equipped with an acceleration sensor capable of measuring movement of a user. The method includes the steps of: a) measuring acceleration according to a change in the location of the mobile communication terminal by the acceleration sensor and detecting acceleration values of the terminal expressed in an orthogonal coordinate system where the acceleration sensor is set to a reference position; b) calculating gravitational acceleration direction values of the acceleration of the terminal from the acceleration values of the terminal detected in step a); c) detecting relative values of the acceleration values with respect to the gravitational acceleration direction values; and d) calculating the movement amount from the detected relative values.

Abstract: An emergency alarm system is provided, including: a mobile communication terminal to measure and transmit a user's bio signal and to output sound data with a bell sound when an emergency alarm signal is received from a health care server; and a health care server to determine from the bio signal whether or not the user is in an emergency, and to transmit an emergency alarm signal to the mobile communication terminal when the user is determined to be in an emergency.

Abstract: The present invention relates to a method which supplies hard-ware to a mobile communication terminal. And it also discloses a payment method for a commercial transaction. A mobile communication terminal of the present invention includes a contactless IC chip module for handling payment in the machine itself The invention process reading/writing directly by interfacing its chip module with a serial interface to a micro-processor of the terminal. Therefore, it is possible to renew card information, and to issue/cancel a card, and to save multiple cards. By selecting a function, a mobile communication terminal uses it as on-line payment or contactless off-line payment.

Abstract: A battery pack device with circuits for supporting additional functions such as a Karaoke function, a disease diagnosing function, and a skin beauty care function, and adapted to be detachably coupled to a mobile communication terminal, so as to perform the additional functions through the mobile communication terminal. The mobile communication terminal including the battery pack device is also disclosed. The battery pack device includes battery cells for supplying DC power to a body of the mobile communication terminal via power supply terminals, an additional circuit unit for providing additional functions to the terminal body, and a control unit for controlling an operation of the additional circuit unit while performing data transmission and reception with respect to an external device. The control unit includes an additional function processor for controlling the additional circuit unit, and a communication unit for performing data transmission and reception with respect to the terminal body.