DEVICE AND A METHOD FOR AUTOMATICALLY CONTROLLING THE VOLUME OF A MOBILE COMMUNICATION TERMINAL, SPECIFICALLY CONCERNED WITH MEASURING A VOLTAGE APPLIED TO A SPEAKER DURING A MELODY REPRODUCTION, AND AUTOMATICALLY CONTROLLING AN INTRINSIC VOLUME LEVEL OF MELODY

摘要

Purpose a: device and a kind of method, the voltage that control volume for an automatically mobile communication terminal is arranged to measure a loudspeaker voltage measurement during melody duplication is compared with a reference value of volume key level, automatically control the intrinsic volume of melody, to reduce the time, for measuring loudspeaker voltage. Construction: when a melody regenerated signal is exported from a key input unit, a controller checks whether that melody duplication is previously to be completed by reading the one side end flag of selected melody (121). Otherwise, the selected melody data of the controller output of a melody processor (123), initializing variable are used to automatically control an intrinsic volume level of melody (127). Controller checks that a volume key of a terminal is horizontal, determines a reference value (129). One A/D converter measures a loudspeaker voltage to become a digital signal, transmission digital signal to controller (131). Controller calculates a virtual value of loudspeaker voltage, virtual value compared with reference value (133). If virtual value is less than reference value, a maximum value of the controller storage virtual value as low voltage value (143) checks whether that melody duplication is interrupted (145). If so, controller decides whether, counting is 0 (147). Otherwise, controller checks whether, duplication is fully completed (151).