| 摘要 |
PROBLEM TO BE SOLVED: To provide a delay time detection apparatus capable of suppressing the erroneous detection of delay time is suppressed and also enhancing fast-responsiveness compatibly, and to provide a method and a program therefor. SOLUTION: A change determination means 86 determines that the delay time is changed, when a correlation value R of a setup value Rt or more, which is preset in a correlation means 83, is detected at a plurality of times for the same delay time Td, after the delay time Td is calculated at first in a calculation means 85. Preferably, when the correlation value R of the setting value Rt or more is detected at the plurality of times (for example, two times) for the same delay time Td or within a predetermined allowable error range Td±α, within predetermined measurement cycles, it is determined that the delay time is changed. COPYRIGHT: (C)2008,JPO&INPIT
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