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電波修正時計
专利权人:
セイコーエプソン株式会社
发明人:
宮原 史明
申请号:
JP20120224390
公开号:
JP6123216(B2)
申请日:
2012.10.09
申请国别(地区):
日本
年份:
2017
代理人:
摘要:
PROBLEM TO BE SOLVED: To provide a radio controlled timepiece capable of receiving a plurality of types of standard radio waves having different frequencies, and improving reception sensitivity.SOLUTION: A radio controlled timepiece 1 includes: a control part 45 for setting the frequency of a standard radio wave to be received; a tuning circuit 31 for receiving the standard radio wave, and for outputting a reception signal; a first amplifier circuit 32; a local oscillation signal generation part 33 for outputting a signal for conversion; and a frequency conversion part 34 for converting the reception signal into a signal for processing having an intermediate frequency by using the signal for conversion. The local oscillation signal generation part 33 generates a plurality of types of upper side signals the frequency of each of which is set to be higher than the intermediate frequency, and to be different for each reception frequency and a plurality of types of lower side signals the frequency of each of which
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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