Time correcting apparatus and radio controlled timepiece

Details Time correcting apparatus and radio controlled timepiece Time correcting apparatus and radio controlled timepiece

2011-08-16

2011-08-16

Miska, Vit W (Department: 2833)

Horology: time measuring systems or devices

Plural timepiece system or system device

With wireless synchronization

Reexamination Certificate

active

08000173

ABSTRACT:
In a time correcting apparatus, a signal including time codes is sampled to generate a bit sequence of input TCO data. A prognostic TCO data generating unit33generates a bit sequence of prognostic TCO data based on a current time calculated by a time calculating circuit17. An error number calculating unit34compares bits of the input TCO data with bits of the prognostic TCO data to count the number of discrepancy, thereby calculating the number of errors, and shifts bits of the prognostic TCO data to generate new TCO data and compares bits of the new TCO data with bits of the input TCO data to calculate the number of errors. A judging unit35judges if the number of errors is valid. When the number of errors is valid, a time correcting unit36calculates a time difference of the calculated current time based on the number of shifting bits, as much as which number of shifting bits the prognostic TCO data has been shifted to calculate such valid number of errors.

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patent: 4543657 (1985-09-01), Wilkinson
patent: 2004/0190378 (2004-09-01), Farmer
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patent: 2007/0230285 (2007-10-01), Nakagawa
patent: 2002-214372 (2002-07-01), None

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