Title:
Ultrasonic communications system
Document Type and Number:
Japanese Patent JP6275040
Kind Code:
B2
Abstract:
Provided is an ultrasonic-wave communication system where the influence of ambient noise and the Doppler effect are suppressed and where a user of a portable terminal is prevented from hearing unwanted sound. After performing encryption processing of store information, a beacon 5 placed in a salesroom 3 sends out store-information-containing beacon information of one channel as ultrasonic waves into the salesroom 3 by combining a control carrier, a first carrier, and a second carrier in such a way that a first carrier signal and a second carrier signal are output between control carrier signals a number of times according to the store information and that a state where the first carrier signal and/or the second carrier signal is output is maintained.
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Inventors:
Yo Shibata
Mitsunori Takahashi
Yuki Sato
Mitsunori Takahashi
Yuki Sato
Application Number:
JP2014527388A
Publication Date:
February 07, 2018
Filing Date:
December 27, 2013
Export Citation:
Assignee:
Spotlight Co., Ltd.
International Classes:
H04B11/00
Domestic Patent References:
| JP2006323182A | ||||
| JP2013141054A |
Foreign References:
| WO2011014292A1 | ||||
| WO2011118017A1 | ||||
| WO2007097157A1 |
Other References:
ARENTZ et al.,‘Near ultrasonic directional data transfer for modernsmartphones.’,In Proceedings of the 13th international conference on Ubiquitous computing, UbiComp'11,ACM,2011年 9月21日,pp.481-482,インターネット
Attorney, Agent or Firm:
Creation International Patent Office
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