| 摘要 |
<P>PROBLEM TO BE SOLVED: To eliminate the need for a calibration delay line for calibrating delay amount on a delay line, and to eliminate variation in calibration. <P>SOLUTION: A unit delay amount such as by 1T hour is set during a calibration period such as 9T segment, for a delay line that delays an input signal (edge pulse). A test pulse is superposed on the input signal, and a comparison pulse having the unit delay amount to the test pulse is generated. A phase comparison is performed between the comparison pulse and the test pulse in which the unit delay amount is provided through the delay line, to determine a unit delay control value corresponding to the unit delay amount. The determined unit delay control value is used as a unit delay control value of calibration result for setting a delay amount of the subsequent delay line. <P>COPYRIGHT: (C)2012,JPO&INPIT |
