| 摘要 |
PURPOSE: An automatic time signal broadcast system using the Internet and its control method are provided to output a time signal on time by synchronizing a current time with a time calibrating server by using the Internet and automatically calibrate the current time of a broadcast system on online on a real time basis. CONSTITUTION: A time calibrating server(100) provides an accurate current time. A personal computer(310), connected to the time calibrating server through the Internet so that a current time of a broadcast system is automatically calibrated, stores various music contents, sets a school schedule operation time and selects a time signal music to be outputted at the set time, and transmits a corresponding output signal to an I/O port(320) through an RS-232C in order to remotely control school broadcasting. The I/O port(320) receives the serial signal from the RS-232C, converts it into a parallel signal and outputs it in order to adjust an operation speed of a CPU and an external device, a signal form(serial-parallel) and a voltage level to control a 16-channel school broadcasting remote amp controller(330). The remote amp controller(330) receives an output signal from the I/O port(320) and operates a general school broadcasting device. The school broadcasting device(340) outputs a melody and music through a speaker(350) at a predetermined time point under the control of the remote amp controller(330).
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