METHOD FOR OPERATING VOCODER FOR MOBILE COMMUNICATION TERMINAL

摘要

PURPOSE: A method for operating a vocoder for a mobile communication terminal is provided to easily adjust encoding and decoding points of the vocoder through a microprocessor. CONSTITUTION: A vocoder initializes necessary parameters. The vocoder enters a standby state waiting a frame reference signal for setting a timing with a system. The vocoder reads values of encoding offset register(34), decoding offset register(35), and decoding interrupt register(36) preliminarily stored at a microprocessor(33) for initializing IS_CNT and OS_CNT values, and changes a state to operate according to the timing of the system. The vocoder inspects the OS_CNT value. In the case of a decoding point, the vocoder starts decoding. In the case of a non-decoding point, the vocoder inspects the IS_CNT value. In the case of an encoding point, the vocoder starts encoding. In the case of a non-encoding point, the vocoder enters into an idle state.