Title:
超音波通信システム及びビーコン
Document Type and Number:
Japanese Patent JP5429826
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an ultrasonic communication system that takes into consideration difference in frequency characteristics that microphones of individual mobile terminals have, the ultrasonic communication system being not influenced by a Doppler effect due to noise and the movement of the mobile terminals, and exercising an excellent communication performance with a simple configuration.SOLUTION: A beacon 5 that oscillates an ultrasonic wave in a salesroom is installed, and an ultrasonic communication system 1 communicates with a mobile terminal 6 of a customer. After converting two digital signals into an analog signal as a combination of a first carrier and a second carrier that have adjacent frequencies and include specific identification information of a store and as transmission information about which the active areas of the first carrier and the second carrier alternate on the time axis, the analog signal is transmitted in the salesroom from the beacon. The transmission information is received by a portable microphone of the mobile terminal of the customer in the salesroom, and a demodulation processing unit demodulates the transmission information including the specific identification information for presence confirmation of the customer by comparison calculation of a pattern corresponding to the sound volume levels on the time axis of the first carrier and the second carrier.
Inventors:
Yo Shibata
Mitsunori Takahashi
Aoyama Arata
Mitsunori Takahashi
Aoyama Arata
Application Number:
JP2011289500A
Publication Date:
February 26, 2014
Filing Date:
December 28, 2011
Export Citation:
Assignee:
Spotlight Co., Ltd.
International Classes:
H04M11/00; H04B11/00; H04M1/00; H04W4/06
Domestic Patent References:
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Foreign References:
| WO2011014292A1 | ||||
| WO2011118017A1 | ||||
| WO2007043376A1 |
Attorney, Agent or Firm:
Creation International Patent Office
Fujio Shimoyama
Kazuo Maeda
Fujio Shimoyama
Kazuo Maeda
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