Title:
BROADCASTING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/123636
Kind Code:
A1
Abstract:
A broadcasting system (10) is provided with one loop (1) designed to transmit a signal to a speaker (3) and constituted by a plurality of signal lines (2), one or a plurality of isolators (40) arranged between the signal lines (2) constituting the loop (1), and a broadcast output device (20) for outputting an output signal to the loop (1). The broadcast output device (20) forms the output signal outputted to the loop (1) by superimposing an input signal and a direct-current voltage one on top of another. The isolator (40) operates on the basis of the output signal, detects shorting of the signal line (2) connected to the isolator (40), connects the plurality of signal lines (2) connected to the isolator (40) when there is no shorting, and leaves the plurality of signal lines (2) connected to the isolator (40) unconnected when shorting is detected.
Inventors:
SANO TAKAAKI (JP)
KAKEDA KIMIHIRO (JP)
ASADA KAZUMA (JP)
KAKEDA KIMIHIRO (JP)
ASADA KAZUMA (JP)
Application Number:
PCT/JP2017/046142
Publication Date:
June 27, 2019
Filing Date:
December 22, 2017
Export Citation:
Assignee:
TOA CORP (JP)
International Classes:
H04R27/00; H04H20/12; H04H20/61; H04R3/12; H04R29/00
Foreign References:
| JP6033397B2 | 2016-11-30 | |||
| JPH0970099A | 1997-03-11 | |||
| JP2014509813A | 2014-04-21 |
Other References:
See also references of EP 3731539A4
Attorney, Agent or Firm:
HAMANA, Tetsuya (JP)
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