发明名称 D/A CONVERSION SYSTEM
摘要 PURPOSE:To attain a system sufficiently usable for an audio equipment or the like requiring high S/N and high accuracy by locating the power center of an output analog signal to a position parted by a prescribed time from the initial time of each data output period and making the power center location always constant. CONSTITUTION:The value of 1 level is outputted by a half clock period in figure (a) and by a one clock period in figure (b) at nearly a half of one data output period with respect to a minimum value 0 of an input code. As the input code increases by 1, 2, 3, the time outputting 1 level is increased by a half clock period each in figure (a) and one clock period each in figure (b) at both sides of the location outputting 1 level. Thus, the power center location of the output analog signal having a binary value of 1 and 0 level is made constant always in each data output period independently of the inputted digital value.
申请公布号 JPS63176020(A) 申请公布日期 1988.07.20
申请号 JP19870006186 申请日期 1987.01.16
申请人 NIPPON TELEGR & TELEPH CORP <NTT> 发明人 MATSUTANI YASUYUKI
分类号 H03M1/82 主分类号 H03M1/82
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