JPS6239353U

JPS6239353U -

Info

Publication number: JPS6239353U
Application number: JP13182885U
Authority: JP
Priority date: 1985-08-27
Filing date: 1985-08-27
Publication date: 1987-03-09

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例の返信信号発生回
路の回路図、第２図はその各部のタイムチヤート
、第３図は第５図の従来の構成を改良したこの考
案の要部ブロツク図、第４図は遠隔多重伝送装置
の構成を示すブロツク図、第５図は従来の遠隔多
重伝送装置の親器と端末器の詳細なブロツク図、
第６図は従来の返信信号発生回路の回路図である
。Ｐ……親器、１〜Ｎ……端末器、……第１の
スイツチ回路、……制御回路、……第２のス
イツチ回路。 Fig. 1 is a circuit diagram of a reply signal generation circuit according to an embodiment of this invention, Fig. 2 is a time chart of each part thereof, and Fig. 3 is a block diagram of the main part of this invention which is an improvement over the conventional configuration shown in Fig. 5. , FIG. 4 is a block diagram showing the configuration of the remote multiplex transmission device, and FIG. 5 is a detailed block diagram of the parent device and terminal device of the conventional remote multiplex transmission device.
FIG. 6 is a circuit diagram of a conventional reply signal generation circuit. P... Parent device, 1 to N... Terminal device,... First switch circuit,... Control circuit,... Second switch circuit.

Claims

[Claims for Utility Model Registration] A parent device and a plurality of terminal devices each having a different unique address are connected by a pair of signal lines, and the parent device converts a transmission signal including an address signal into a voltage signal to the pair of terminal devices. A voltage is applied between the pair of signal lines during a reply signal period after sending the transmission signal to the signal line, and the terminal unit transmits the signal transmitted from the parent unit through the pair of signal lines. In the remote multiplex transmission device configured to receive a transmission signal and send a reply signal as a current signal to the pair of signal lines in response to a match between an address signal in the transmission signal and its own unique address, the terminal device A return signal generating circuit installed in the circuit, comprising a diode bridge having a pair of AC ends connected to the pair of signal lines, and a first switch circuit connected between the pair of DC ends of the diode bridge. a control circuit having a switch element that is supplied with power from the DC end of the diode bridge and turns OFF in response to the reply signal to turn ON the first switch circuit; the DC end of the diode bridge and the control circuit; and a second switch circuit inserted in series between the second switch circuit and the second switch circuit, which is turned on in response to an address match signal input in accordance with the address signal.