SIGNAL TRANSMITTER

PROBLEM TO BE SOLVED: To improve a delay time difference occurring when different transmission lines are used in a signal transmitter which transmits a signal from a transmitting device to a receiving device using several systems of transmission lines. SOLUTION: In the transmitting device, modulation processing means 2, 3 and 4 perform modulation processing which requires a different processing time for each system on one and the same signal and output the results of modulation processing performed for each system to transmission lines 41 and 42 of the respective systems. In the receiving device, demodulation processing means 21 and 22 perform demodulation processing which requires a different processing time for each system on the signals of the respective systems received from the transmission lines of the respective systems, and an adjustment means 24 adjusts a delay time against at least one signal out of a plurality of signals of the demodulation processing results of the respective systems received from the demodulation processing means, and then a selecting means 24 selects and outputs a signal of one system out of signals of a plurality of systems obtained by the demodulation processing means and the adjustment means. COPYRIGHT: (C)2008,JPO&INPIT