发明名称 TRANSMISSION SYSTEM FOR EMERGENCY CALL SIGNAL
摘要 PURPOSE:To secure the proper treatment and countermeasure for quick recovery and also to eliminate the anxiety of the operator of mobile station, by grasping the automobile number of the mobile station in an emergency state and the emergency situation through a base station. CONSTITUTION:When the emergency situation is occurred at the mobile station the signals sent from an emergency call operating input terminal 7 are supplied to an emergency call signal transmitting part 6 and an emergency call control part 10. The part 10 receives the signal from the part 6 and sends it to a control part 5 for transmission of the signal to a base station. At the same time, the signals sent from the part 6 are cut off after a fixed time by the control of a timer. The sound signals supplied from a sound collecting mike connection terminal 11 is sent to the part 5 and modulated by a transmitter 4. The modulated sound signal is sent to the base station from an antenna 1 through an antenna switching part 2. While the input of the sound signals from the terminal 11 is cut off after a fixed time and the signals are sent to the part 5 from the part 6. Hereafter the emergency call signals and the sound signals delivered from the sound collecting mike are sent alternately to the base station under the control of a timer until the normal state is recovered.
申请公布号 JPS622726(A) 申请公布日期 1987.01.08
申请号 JP19850140368 申请日期 1985.06.28
申请人 HITACHI DENSHI LTD 发明人 ITO KOZO
分类号 H04B7/26;H04W84/08 主分类号 H04B7/26
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