专利名称：Signal generating apparatus发明人：Hiroshi Takahashi,Hitoshi Nishiyama申请号：US07/200700申请日：19880531公开号：US04849714A公开日：19890718
摘要：The frequency setting data for setting a preset voltage of a VCO and afrequency dividing ratio of a frequency divider are latched in a data register. A controlsection includes two registers for latching the data latched in the data register, and acontrol circuit for determining the latch timings of the registers. One register suppliesthe latched data to the frequency divider. Another register supplies the latched datathrough a D/A converter to the VCO. When new frequency setting data is set in the dataregister, the control circuit delays the frequency setting data latched in the data registerby at least one period of the reference signal with respect to the latching time, andsupplies it simultaneously to the registers.
申请人：ANRITSU CORPORATION
代理机构：Frishauf, Holtz, Goodman & Woodward
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