| 摘要 |
<p>PURPOSE:To obtain a continuous wave having the continuity of a phase by giving an address to a read-out address of a comparison memory so that phases may accord with each other before and after repeated reading when the repeat reading from the comparison memory is conducted. CONSTITUTION:The number of addresses before repetition which are obtained during a period between memory triggers t2 and t3 is inputted to an address counter 30 for correction by the memory trigger t3, and the number of addresses after repetition which are obtained during a period between memory triggers t3 and t4 is inputted to the address counter 30 for correction by the memory trigger. In the address counter 30 for correction, a difference thetaan-thetabn+1 between phases before and after the aforesaid repetition is computed as a difference between the numbers of addresses, and an address of an address generator 12b is corrected at the next point t5 of repetition of reading in accordance with the result of the computation. According to this constitution, a phase at a point R of repetition can be given continuity by one correction at least even when the phase has no continuity.</p> |
