Multiple display type television door phone
专利汇可以提供Multiple display type television door phone专利检索，专利查询，专利分析的服务。并且PURPOSE:To realize the simplification of a state recognition and operability etc. with eliminating a separate displaying element by performing a state display combining a display part and a monitor and also by separating functionally the function of an operating switch with a screen display. CONSTITUTION:In a normal screen display time that displays the open/close state of an electric lock 19 in a system and the on/off state of a lighting apparatus L, when state is changed by another operation except the operating switch of the system, a housing information panel A detects the state and changes the display of a display part 6. At the next, when the panel A receives a call from a door phone 22 in some system within a system, it detects and overlaps on the monitoring television picture of related part of the part 6 and also, it operates without disturbing a monitor and displays the state of a lock 19 and the door and an operating position. With this state, by the operation of the operating switch that is provided around th part 6, a related control outputting is performed and also the display of the part 6 is changed if a state change is detected following the above state. And by the reset of a hand set 2, etc., and the detection of the completion of a call, a normal screen display is restored.，下面是Multiple display type television door phone专利的具体信息内容。
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