PROBLEM TO BE SOLVED: To provide a vehicle broadcasting system capable of providing vehicle broadcast, even when vehicle broadcast of digital transmission system is disabled.SOLUTION: A vehicle broadcasting system includes a power supply changeover section for changing over so that any one of a normal power source line 11 or an emergency power source line 12 is electrified, a first broadcast device (broadcast device 3) for outputting an analog sound signal to a digital transmission line 41 or an analog transmission line 5, and a second broadcast device (broadcast device 6) for outputting a sound signal inputted from the digital transmission line 41 or the analog transmission line 5. When electrification of the normal power source line 11 is detected, the first broadcast device converts it into a digital sound signal and outputs to the digital transmission line 41, and when electrification of the emergency power source line is detected, outputs to the analog transmission line 5, and the second broadcast device converts a sound signal, inputted from the digital transmission line 41, into an analog sound signal and outputs, and outputs an analog sound signal inputted from the analog transmission line 5.SELECTED DRAWING: Figure 1

    【課題】デジタル伝送方式の車両放送を使用できない状態となった場合であっても、車両放送を提供することが可能な車両放送システムを提供する。【解決手段】通常用電源線11及び非常用電源線12のいずれかを通電するように切り替える電源切替部と、アナログ音声信号をデジタル伝送路41又はアナログ伝送路5に出力する第1放送装置(放送装置3)と、デジタル伝送路41又はアナログ伝送路5から入力された音声信号を出力させる第2放送装置(放送装置6)と、を備える。第1放送装置は、通常用電源線11の通電を検知した場合、デジタル音声信号に変換してデジタル伝送路41に出力するとともに、非常用電源線の通電を検知した場合、アナログ伝送路5に出力し、第2放送装置は、デジタル伝送路41から入力された音声信号をアナログ音声信号に変換して出力させるとともに、アナログ伝送路5から入力されたアナログ音声信号を出力させる。【選択図】図1


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    Title :

    VEHICLE BROADCASTING SYSTEM


    Additional title:

    車両放送システム


    Contributors:

    Publication date :

    2018-08-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04H BROADCAST COMMUNICATION , Rundfunkübertragung / B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler



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