| 摘要 |
PURPOSE: A method for controlling a DSP(Digital Signal processor) scheduling is provided to create and supply a DSP control signal capable of controlling a DSP scheduling for a large amount vocoder signal process at basic processing time period in a receiving termination time of a TDM(Time Division Multiplexed) highway and a time of inactive statuses of a serial port and a DMA(Direct Memory Access) for making an interactive independent serial vocoding job possible without a handshaking method between a host processor in a vocoder board and a DSP. CONSTITUTION: A TDM highway connected to a public telecommunication network and a path connected to a packet network are provided. An interface function is supplied for transmitting voice data between a user connected to a corresponding packet network and a user of the public telecommunication network. A predetermined control signal necessary for each DSP(12) is created and supplied in a control circuit(11) comprising an FPGA(Field Programmable Gate Array) for a voice data receipt and accumulation from the TDM highway connected to the public telecommunication network and a process of basic processing time unit with respect to received data. Thus, a DSP scheduling function for a large amount vocoder signal process is supplied. That is, a large amount vocoder board(10) decodes voice data coded from a packet network and transmits the data to the public telecommunication network user, and codes a voice signal of the public telecommunication network user and transmits the signal to the packet network. Each DSP(12) performs a coding process and a decoding process as DSP capacity lines according to each vocoding kind, and performs a signal process by receiving a standard control signal from the control circuit(11) in the vocoder board(10) for a vocoding job.
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