| 摘要 |
PURPOSE:To eliminate the effect of phase uncertainty by outputting a code of the 1st digit of an input signal with differential conversion. CONSTITUTION:A transmission differential logical circuit 11 applies (p) signal S11.(q) signal S12 for 4-phase transmission differential conversion to output (p) signal D11.(q) signal D12 and an exclusive OR circuit 12 outputs exclusive OR of the (p) signal S21.(q) signal S22 or the (p) signal S31.(q) signal S32 into (p) signal S'21.(q) signal S'22 or (p) signal S'31.(q) signal S'42. Then a code converting circuit 141 of a D-A converting section 14 converts (p) signal (D11S'21S'31).(q) signal (D12S'22S'32) into (p) signal (D11D21D31).(q) signal (D12D22D32) and a D-A converting circuit 142 converts it into a signal P or a signal Q. |
