| 摘要 |
PURPOSE:To achieve high speed digital transmission, by transmitting a digital signal through D/A conversion and reproducing it through A/D conversion. CONSTITUTION:A digital signal is D/A-converted and transmitted with a reference amplitude VREF. The reference amplitude VREF is a reference signal in reproducing the signal and used for the section of data group, and periodically inserted in a transmission signal. The level between the maximum data amplitude VH and the minimum data amptitude VL is determined depending on the digital data, and sectioned in the stages of 2N when the data is N-bit. If the value of data is zero, it is the minimum data amplitude VL and this is used for the reproduction of synchronizing signal. |
