Title:
ELECTRIC WAVE CORRECTION TIMEPIECE
Document Type and Number:
Japanese Patent JP2017138274
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an electric wave correction timepiece capable of improving accuracy of determination of a code of a reception signal.SOLUTION: An electric wave correction timepiece comprises: a reception section receiving a standard electric wave and outputting a demodulation signal obtained by demodulating a reception signal; a signal width detection section 514 detecting a signal width of the demodulation signal; a range setting section 515 setting a range of the signal width including a theoretical value of the signal width defined with respect to a code for each code; a signal width classification section 516 classifying a detection signal width of the signal width detection section 514 into a corresponding range of the signal width out of the ranges of the signal width; a representative value calculation section 518 calculating a representative value of the detection signal width classified for each range of the signal width; a determination range setting section 519 setting a code determination range for each code on the basis of the representative value; and a code determination section 520 comparing the detection signal width of the signal width detection section 514 with the code determination range and determining a code of the demodulation signal.SELECTED DRAWING: Figure 4
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Inventors:
YOSHIDA HIROAKI
Application Number:
JP2016020976A
Publication Date:
August 10, 2017
Filing Date:
February 05, 2016
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G04R20/12; G04G5/00; G04R20/00
Attorney, Agent or Firm:
Intellectual Property Office