Data Transfer Apparatus and Method using Asynchronous Dual-Bus

The present invention relates to a data transfer apparatus and method that allows to reduce the power consumed in the data transfer by limiting the number of double-line bus for transmitting data if the transmission side transmits the same data. Data transmission apparatus using the asynchronous double-line bus in accordance with the present invention, storing the previously transmitted data, and an index signal to the index control signal corresponding thereto when the same data is repeatedly transmitted by providing the transmission data control unit for comparison with the data currently transferred power, and a compressor that is configured to transmit the asynchronous side of the double-line bus; And by providing the output data control section for storing the previously transmitted data, if the same data is repeatedly transmitted the index signal and the index control signal is transmitted in a case where it outputs the previously transmitted data stored in the output-data control unit, the asynchronous double-line bus decompressor configured to receive the side; as by having a, so that the same data is repeatedly be limited to no more than a predetermined number of asynchronous double-line bus line for the transmission if the data transmission has a technical feature. Doublet bus