| 摘要 |
<p>PURPOSE:To provide a delay pulse generator which achieves a smaller size and a lower cost with a high accuracy by providing a delay time control means with a multi-phase clock generation means, a clock section means and a pulse generation starting means which counts a clock signal selected to output a pulse generation start signal to a pulse generation means based on the counts. CONSTITUTION:A high-frequency multi-phase clock generation section 12 outputs (m) type of high-frequency clocks f1, f2 and fm synchronous to a reference signal (a) from a transmission start reference signal generating section 11. Two clocks g1 and g2 are selected by clock selection sections 13a and 13b from among the (m) type of high-frequency clocks to be sent to counters 14a and 14b. After reset by the reference signal (a), the counters 14a and 14b start counting and a counter output is inverted when counts thereof coincide with a preset value. A counter 15 receives the output as counting start command signal and gets the output of the counter inverted immediately after the counts reach a preset value.</p> |
