| 摘要 |
PROBLEM TO BE SOLVED: To provide a timer device capable of accurately measuring time even if communication is disrupted.SOLUTION: A timer device comprises: a reception unit 31 that receives first clock time information to determine a first clock time determined according to pulses from an oscillator 44 and second clock time information to determine a second clock time determined according to pulses from the oscillator 44; a clocking unit 48 for measuring time according to pulses output by a zero-cross detection unit 51 having an accuracy lower than the oscillator 44; a control unit 47 that receives an output from the clocking unit 48, the first clock time information, and the second clock time information, identifies a time error measured by the clocking unit 48 between the first clock time and the second clock time, and sets relative relation between the time difference between the first clock time and the second clock time and the error; and a storage unit 52 for storing the identified relative relation.SELECTED DRAWING: Figure 4 |
