RADIO-CONTROLLED TIMEPIECE, METHOD OF OBTAINING DATE/TIME INFORMATION, AND RECORDING MEDIUM

摘要

A radio-controlled timepiece, including: a radio wave reception unit that receives satellite waves and extracts an incoming code sequence formatted in a prescribed format from the received satellite waves; and a processor that generates in advance an expected code sequence that is expected to be part of the incoming code sequence and detects the expected code sequence within the incoming code sequence by sequentially comparing the expected code sequence with the incoming code sequence, the processor determining a present date/time, as indicated by the satellite waves, in accordance with a timing at which the detected code sequence occurs within the incoming code sequence as measured by time kept by the timepiece, wherein the expected code sequence includes codes that change with a transmission period during which time-related information that includes satellite date/time contained in the satellite waves, which is formatted in the prescribed format, is transmitted.

主权项

1. A radio-controlled timepiece, comprising:
a radio wave reception unit that receives satellite waves and extracts an incoming code sequence formatted in a prescribed format from said received satellite waves; and a processor that generates in advance an expected code sequence that is expected to be part of said incoming code sequence and detects said expected code sequence within said incoming code sequence by sequentially comparing said expected code sequence with said incoming code sequence, the processor determining a present date/time, as indicated by the satellite waves, in accordance with a timing at which said detected code sequence occurs within said incoming code sequence as measured by time kept by the timepiece, wherein said expected code sequence includes codes that change with a transmission period during which time-related information that includes satellite date/time contained in the satellite waves, which is formatted in said prescribed format, is transmitted.