Title:
位置情報管理システム、出力装置、音波の出力制御方法、及びプログラム
Document Type and Number:
Japanese Patent JP6787177
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce the impact of a sonic wave on the periphery of an output device, in a positional information management system for managing the positional information of a terminal acquiring the sonic wave outputted from the output device.SOLUTION: The output device of a positional information management system has a sonic wave collection unit for collecting the sonic waves on the periphery of the output device, a sonic wave analysis unit for analyzing the frequency and the level of sonic waves on the periphery of the inaudible sound area of higher frequency than a prescribed frequency, by using the peripheral sonic waves collected by the sonic wave collection unit, an inaudible sound output unit for outputting sonic waves containing first identification information, corresponding to the position where the output device is installed out of the inaudible sound area, based on the analysis results of the sonic wave analysis unit, to an available frequency band where the level of the peripheral sonic waves is less than a threshold level, and an output control unit for transmitting status information, indicating that the inaudible sound area is not available for outputting the sonic waves containing the first identification information, when there is no available frequency band.SELECTED DRAWING: Figure 9
Inventors:
Kyoya Ochiai
Tsutomu Kawase
Jun Hosokawa
Takashi Saito
Shingo Matsushita
Michiaki Shinozuka
Shuji Kubota
Tsutomu Kawase
Jun Hosokawa
Takashi Saito
Shingo Matsushita
Michiaki Shinozuka
Shuji Kubota
Application Number:
JP2017034107A
Publication Date:
November 18, 2020
Filing Date:
February 24, 2017
Export Citation:
Assignee:
株式会社リコー
International Classes:
H04M11/00; G01S1/76; H04B11/00
Domestic Patent References:
| JP2016156799A | ||||
| JP2014177087A | ||||
| JP2017037000A | ||||
| JP2013106278A |
Foreign References:
| US20160156374 | ||||
| US20140355386 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito