DEVICE AND METHOD FOR ACOUSTIC COMMUNICATION
PROBLEM TO BE SOLVED: To make it possible to embed transmission information in an acoustic signal and transmit it even in a poor environment.SOLUTION: In an information transmission device 1, an embedding unit 13 repetitively embeds the same transmission information in an acoustic signal and outputs...
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Main Author | |
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Format | Patent |
Language | English Japanese |
Published |
04.10.2018
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Subjects | |
Online Access | Get full text |
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Summary: | PROBLEM TO BE SOLVED: To make it possible to embed transmission information in an acoustic signal and transmit it even in a poor environment.SOLUTION: In an information transmission device 1, an embedding unit 13 repetitively embeds the same transmission information in an acoustic signal and outputs it, and a transmission unit 14 transmits the acoustic signal output from the embedding unit 13. At that time, the embedding unit 13 alternately repeats a normal embedding process to embed the transmission information in the acoustic signal and a reverse embedding process to reverse the transmission information and embed it in the acoustic signal every prescribed period. In an information reception device 2, a reception unit 21 continues receiving the acoustic signal, and an extraction unit 23 repeats a process to extract the transmission information from the acoustic signal until success in extraction.SELECTED DRAWING: Figure 1
【課題】 劣悪な環境においても送信情報を音響信号に埋め込んで伝達することを可能にする。【解決手段】 情報送信装置1において、埋め込み部13は、同一の送信情報を音響信号に繰り返し埋め込んで出力し、送信部14は、埋め込み部13から出力される音響信号を送信する。その際、埋め込み部13は、所定周期毎に、送信情報を音響信号に埋め込む通常埋め込み処理と送信情報を反転して音響信号に埋め込む反転埋め込み処理を交互に繰り返す。情報受信装置2において、受信部21は、音響信号を継続して受信し、抽出部23は、音響信号から送信情報を抽出する処理を抽出に成功するまで繰り返す。【選択図】図1 |
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Bibliography: | Application Number: JP20170051617 |