| 摘要 |
The code extraction unit extracts time information from a time signal. The block determination unit determines whether the extracted time information is correct by each kind of the time information. The time information collection unit collects time information determined as correct. The time information determination unit performs logic check of the collected time information, and determines whether correct information is collected for all kinds of the time information, and if not collected, stores time information determined as logically correct in a temporary storage unit. If correct information is not collected for all kinds in the time information collection unit, a time information modification unit updates the time information in the time information collection unit by the time information stored in the temporary storage unit. If correct information is collected for all kinds of the time information, the time information determination unit corrects time information retained in a timekeeping unit.
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