| 摘要 |
PURPOSE: A method for transmitting a short message in real time in the middle of telephone conversation is provided to send a short message in real time by using a DTMF(Dual Tone Multi Frequency) message used for the call processing of a mobile phone. CONSTITUTION: A key input part(11) comprises a hot key(20) to recognize the data inputted in the middle of telephone conversation as a text. A converter(30) converts the data, inputted through the key input part(11) in the middle of telephone conversation, into a DTMF message. If the data inputted through the key input part(11) is a DTMF tone, the converter(30) inserts a DTMF tone code in the DTMF message. If the inputted data is a text, the converter(30) inserts a text code in the DTMF message and then transmits the message. An interpreter(50) analyzes a DTMF message received in the middle of telephone conversation. If the received DTMF message is a DTMF tone, the interpreter(50) outputs it to a speaker(61). If the received DTMF message is text data, the interpreter(50) displays the text data through a display part(62).
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