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Title:
TIME INFORMATION ACQUISITION DEVICE AND SYNCHRONIZATION SIGNAL CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/186800
Kind Code:
A1
Abstract:
[Problem]: To provide a time information acquisition device and a synchronization signal conversion device that can generate a synchronization signal at low cost regardless of whether indoor or outdoor, and, in particular, can acquire time information by efficiently and surely selecting a channel having good wireless quality from a broadcast wave.　[Solution]: In this time information acquisition device and this synchronization signal conversion device, a broadcast wave signal control unit 15, when selecting a time information acquisition channel from among terrestrial digital broadcasting channels, selects one of a designated channel search process, a priority channel search process, and an all channel search process in accordance with the number of a designated channel and the number of a priority channel inputted by a user. In the all channel search process, while all channels of a terrestrial digital broadcast wave are sequentially set to a broadcast wave signal reception unit 13, wireless quality of the set channels are acquired and stored. A channel having the best wireless quality among all the channels is set to the broadcast wave signal reception unit 13 as a time information acquisition channel and the broadcast wave signal reception unit 13 is caused to select said channel.

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Inventors:
TAKASHIMA MITSUHIRO (JP)
NAGANO TERUFUMI (JP)
YOTSUMOTO KOJI (JP)
KUSHIOKA YOICHI (JP)
Application Number:
PCT/JP2020/045020
Publication Date:
September 23, 2021
Filing Date:
December 03, 2020
Export Citation:
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Assignee:
HITACHI INT ELECTRIC INC (JP)
International Classes:
G04G5/00; G04G7/00; G04R20/00
Foreign References:
JP2002374473A2002-12-26
JP2016197771A2016-11-24
JP2007027855A2007-02-01
JP2002168977A2002-06-14
JP2008294865A2008-12-04
US20060268665A12006-11-30
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