| 摘要 |
PURPOSE:To make it possible to simply correct a time error uniformly for the preciseness irregularity of an interval timer, by correcting the interval timer by storing the error thereof after converting the detected error thereof to a correcting value. CONSTITUTION:The time per unit error difference of the inverse number of an error per unit time is determined by the difference of an accurate time inputted to an error detecting part 1 and the content of the integration time memory part 7a of an interruption treatment part 7 and the difference with the preceeding time stored in a time memory part 1a while gain and delay information and a time per a unit error are respectively stored in the memory parts 2a, 2b of a conversion part 2 and gain and delay information, information about the necessity of correction and the time per the unit error of the corrected value are respectively stored in the memory parts 3a, 3c and the counter 3b of a correcting value memory circuit 3. Because a correcting part 5 is controlled through this circuit 3 while the corrected clock is applied to an interval timer 6 and a highly precise oscillator is unnecessary, the uniform correction of a time error can be simply performed with respect to the preciseness irregularity of the interval timer. |
