US Patent 7327356 Data transmission device and data transmission method

The data transmission device transmits parallel data of a plurality of bits. The data transmission device includes a parallel data control unit that outputs parallel data for which the logic level of each bit of the parallel data is inverted when the number of bits representing a first logic level is greater than the number of bits representing a second logic level, a data transmitter portion that allows a second current that is larger than a first current representing the first logic level to flow to signal lines corresponding with a bit representing the second logic level; and a parallel data supply control unit that supplies parallel data for which the logic level of each bit of the parallel data is inverted to the reception side.