专利名称：Output device, output method and output
system
发明人：篠塚 道明,川瀬 勉申请号：JP2019210974申请日：20191122公开号：JP2020030439A公开日：20200227
专利附图：
摘要：Problem to be solved: to provide information to the terminal even in the casewhere there is an acoustic wave which is hindered in the non audible sound region in aninformation providing system for providing information using an acoustic wave difficult to
be recognized by the user. The output device isAn output device for outputting soundwavesA non audible sound output portion outputting a sound wave including a firstidentification information of the output device in a non audible sound area having afrequency higher than a predetermined frequencyA sound collecting section for
collecting acoustic waves around the output deviceUsing the sound wave collected by theacoustic wave collecting sectionAn acoustic analysis section for analyzing the state ofsound in the non audible sound area around the output device andAccording to theresult of the analysis of the sound state of the non audible sound region around theoutput device by the acoustic analysis sectionAn audible sound output portion thatoutputs a sound wave in which the second identification information of the output deviceis embedded in an audible sound area of frequencies below the predeterminedfrequency.Diagram
申请人：株式会社リコー
地址：東京都大田区中馬込１丁目３番６号
国籍：JP
代理人：伊東 忠重,伊東 忠彦
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