ALARM SIGNAL OUTBREAK APPARATUS AND HIS CONTROL METHOD OF PORTABLE TELEPHONE

摘要

PURPOSE: An apparatus for generating an alarm signal in a cellular phone and a control method therefor are provided to prevent phenomenon in which a user is surprised by a sharply increased volume and does not recognize the alarm signal by a low volume by successively increasing the volume of the alarm signal from a low level according to a certain level. CONSTITUTION: A key input unit(10) inputs alarm time setting data by an external operation. A microcomputer(20) has a timer for counting an internal clock, outputting a time display control signal, outputting an alarm control signal when a current time is identical to the alarm time setting data of the key input unit(10), and outputting a volume variable control signal for varying the volume of an alarm signal. A time display unit(30) displays a time according to the time display control signal of the microcomputer(20). An alarm signal generating unit(40) is operated by the alarm control signal of the microcomputer(20), and generates the alarm signal. An amplifying unit(50) receives the alarm signal of the alarm signal generating unit(40), successively increases the volume of the alarm signal according to the volume variable control signal of the microcomputer(20) by a certain level, and outputs the alarm signal through a speaker(60).