| 摘要 |
<p>PURPOSE:To reduce mis-sampling due to the deviation of transmission reception clock frequencies and the effect of waveform distortion by extracting a sampling point from not only a synchronous word from but also an information word in succession to the synchronous word. CONSTITUTION:Suppose that a transmission data whose frame F consists of a synchronous word SY and information words I1-In in succession thereto is sent from a sender side terminal equipment T to a receiver side terminal equipment R via a transmission line TL. A final change point Ai being a change from 0 to 1 level in an information word Ii is detected within a change detection permissible range by taking a waveform distortion of a transmission system into account based on a sampling point decided precedingly and a sampling point of the succeeding information word Ii+1 is decided based thereupon. Thus, mis-sampling due to the accumulation of waveform distortion of the transmission system and deviation of a clock frequency of the sender side and the receiver side between frames F is reduced and the reception data due to the sampling point is sampled accurately.</p> |
