Signal generator

专利名称：Signal generator发明人：Hitoshi Kitayoshi申请号：US07/284691申请日：19881215公开号：US04901027A公开日：19900213

摘要：In a phase accumulation type signal generatorm when an adder of a phaseaccumulator yields a carry output, a difference circuit generates an analog voltageV.sub.1 =a.sub.2 (n-k.sub.s) which is in proportion to the difference between the outputk.sub.s of the adder and a phase add amount n. A ramp function voltage generatorgenerates a ramp function voltage V(t)=nfa.sub.1 a.sub.3 t/cm which is in proportion tothe product of the frequency f/m of a clock and the phase add amount n. The analogvoltage and the ramp function voltage are compared by a comparator, which outputs asynchronization pulse when they agree with each other.

申请人：ADVANTEST CORPORATION

代理机构：Staas & Halsey

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