Communication system in bus location system
专利汇可以提供Communication system in bus location system专利检索，专利查询，专利分析的服务。并且PURPOSE:To indicate driving instruction information, through the display of a communication request before a bus stop in advance and making communication under a road antenna of the bus stop, by constituting the communication between on-load and a bus as bidirectional data communication and providing an audio transmission function with amplitude modulation. CONSTITUTION:A central controller 1 and road devices A, B are connected with telephone lines 5 and 7, data transmission is performed with the line 5 and the data transmission and audio communication are performed by the line 7. The respective on-road devices A, B are provided with a on-road device 41 and on- road antennas 42-a and 42-b, and the device B is provided with a display device 43. A bus 31 is mounted with a mounting device 33 and a car antenna 32. The device 33 is provided with a hybrid circuit discriminating the direction of signal at transmission and reception and an audio transmission function with amplitude modulation, and when the bus 31 enters the communication area of the device A, data are transmitted to the device 1 via the line 5. When it is necessary to make communication from the device 1, display is given on a display device 43 to make communication between the bus 31 and the device 1 with the device B.，下面是Communication system in bus location system专利的具体信息内容。
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