DATA TRANSMITTING METHOD AND TRANSMISSION/RECEPTION CIRCUIT USED THEREFOR, AND SIGNAL PROCESSOR

摘要

The purpose of this invention is to realize high-speed data transmission by reducing the waveform distortion which occurs when binary digital data signals are transmitted through a transmission line. A sinusoidal reference clock signal (Ck1) is transmitted together with data signal (D1) synchronously modulated in amplitude. The modulated signals are received and demodulated according to the received clock signal to obtain the original data (Dr2). In the synchronous amplitude modulation, a sine wave (Vddq) having the same period and phase as those of the reference clock signal (Ck1) is modulated to have an amplitude larger or smaller than that of the signal (Ck1) depending upon the information (1,0) of the digital data. This data transmitting method can be used for data transmission between the microprocessor and storage device of a computer.