JPS63191739U

JPS63191739U -

Info

Publication number: JPS63191739U
Application number: JP1987082314U
Authority: JP
Priority date: 1987-05-28
Filing date: 1987-05-28
Publication date: 1988-12-09

Description

[Brief explanation of the drawing]

第１図は、本考案の一実施例を示す光通信装置
の回路図。第２図は従来の光通信装置の回路図の
一例。第３図は、従来のリング方式の光通信網の
一例である。図において、は送信部、は受信部、は光
フアイバー、はインターフエイス回路、は受
信信号線、はマイクロコンピユータ、は送信
要求信号線、は送信許可信号線、は送信信号
線、は光フアイバー、〓１１〓はマイクロコ
ンピユータ、〓１２〓は受信部、〓１３〓は
マイクロコンピユータ、〓１４〓は送信部、〓
１５〓は光フアイバー、〓１６〓は受信部、
〓１７〓は信号選択回路、〓１８〓は信号切
替端子、〓１９〓は入力端子Ａ、〓２０〓は
出力端子Ｙ、〓２１〓は入力端子Ｂ。 FIG. 1 is a circuit diagram of an optical communication device showing an embodiment of the present invention. FIG. 2 is an example of a circuit diagram of a conventional optical communication device. FIG. 3 is an example of a conventional ring type optical communication network. In the figure, is a transmitter, is a receiver, is an optical fiber, is an interface circuit, is a reception signal line, is a microcomputer, is a transmission request signal line, is a transmission permission signal line, is a transmission signal line, is an optical fiber, is 11 is a microcomputer, 12 is a receiver, 13 is a microcomputer, 14 is a transmitter,
15〓 is an optical fiber, 〓16〓 is a receiving section,
17 is a signal selection circuit, 18 is a signal switching terminal, 19 is an input terminal A, 20 is an output terminal Y, and 21 is an input terminal B.

Claims

[Scope of utility model registration request]

By setting the transmitting section that converts an electrical signal to an optical signal, the receiving section that converts an optical signal to an electrical signal, and the signal switching terminal 18 to the level "L" or "H", the input terminals A〓19〓, Input terminal B
A signal selection circuit 17 configured to output either one of the input signals of 21 from the output terminal Y 20, a reception signal line, a transmission request signal line, a transmission permission signal line, and a transmission signal line. The transmission request signal line is set to level "H" by connecting the transmission request signal line of the interface circuit to the signal switching terminal 18.
When , the input terminal A of the signal selection circuit 17
The data on the transmission signal line of the interface circuit inputted to 19〓 is transmitted from the transmitter to the optical fiber via the output terminal Y〓20〓 of the signal selection circuit 〓17〓, and the transmission request signal line of the interface circuit becomes level. When the level is "L", the received data from the receiving section that is input to the input terminal B 21 of the signal selection circuit 17 is transmitted to the transmitting section via the output terminal Y 20 of the signal selection circuit 17. An optical communication device characterized by transmitting data to a fiber.