| 摘要 |
PURPOSE:To reduce receiving elements on the receiver side and the number of cable conductors between an exchanger and the receiver by constituting an information of an automatic exchange circuit by means of a diode mesh circuit and scanning the information circuit time-sharingly to receive the information. CONSTITUTION:The information circuit of an automatic exchanger is constituted by mesh-connecting contacts a00-a23 of the automatic exchange with a series circuit consisting of diodes D00-D23. Transistors TR0-TR2 connected to reception starting terminals TM0-TM2 of a receiver are connected with the mesh- connected line terminals of the information circuit so that the information circuit is scanned time-sharingly by the reception starting signals from terminal TM0- TM2. Photocouplers PH0-PH7 which are turned on when contacts a00-a23 are turned on are connected to the terminals on the column direction of the information circuit so as to receive the information from the information circuit. Thus, the number of receiving elements of receiver is decreased and the number of cable lines between the exchanger and receiver is also reduced. |
