| 摘要 |
<P>PROBLEM TO BE SOLVED: To continuously set a delay time in detail with high-accuracy and wide variable delay width in a simple and compact configuration. <P>SOLUTION: A variable delay circuit provided with at least two sets of a fine motion unit and a coarse motion unit as delay circuit units and a selection circuit to switch each delay circuit unit. The variable delay circuit sets delay time of a second fine motion unit of a second delay circuit unit to a minimum value before delay time of a first fine motion unit of a first delay circuit unit is set to a maximum value, sets the delay time of the second fine motion unit of the second delay circuit unit to a maximum value before the delay time of the first fine motion unit of the first delay circuit unit is set to a minimum value, and switches from the first delay circuit unit to the second delay circuit unit by the selection circuit after the delay time of a second coarse motion unit of the second delay circuit unit is set so that the delay time of the first delay circuit unit and the second delay circuit unit become equal to each other. <P>COPYRIGHT: (C)2011,JPO&INPIT |
