JPH0434035U - - Google Patents
Info
- Publication number
- JPH0434035U JPH0434035U JP1990076107U JP7610790U JPH0434035U JP H0434035 U JPH0434035 U JP H0434035U JP 1990076107 U JP1990076107 U JP 1990076107U JP 7610790 U JP7610790 U JP 7610790U JP H0434035 U JPH0434035 U JP H0434035U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- signal
- transmission path
- circuit
- cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 210000004899 c-terminal region Anatomy 0.000 claims 3
- 230000008054 signal transmission Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
Landscapes
- Transceivers (AREA)
Description
第１図は本考案のインタフエース回路の一実施
例を示したブロツク図、第２図は従来のデータ伝
送システムの一例を示したブロツク図である。
１……マスタ送信回路、２……マスタ受信回路
、３……スレーブ送信回路、４……スレーブ受信
回路、５……ケーブル、６，７……分岐回路、８
，９……信号検出回路、１０，１１……双方向伝
送回路、１２……スイツチング回路。
FIG. 1 is a block diagram showing an embodiment of the interface circuit of the present invention, and FIG. 2 is a block diagram showing an example of a conventional data transmission system. 1... Master transmitting circuit, 2... Master receiving circuit, 3... Slave transmitting circuit, 4... Slave receiving circuit, 5... Cable, 6, 7... Branch circuit, 8
, 9... Signal detection circuit, 10, 11... Bidirectional transmission circuit, 12... Switching circuit.
Claims (1)
ブルを着脱自在に接続するＢ端子と、信号受信回
路の入力側を接続したＣ端子と、信号送信回路の
出力側を接続したＤ端子と、前記Ａ端子と前記Ｂ
端子のいずれに信号が入力されたかを検出する信
号検出手段と、この信号検出手段により前記Ａ端
子に信号が入力されたことが検出されると、前記
Ａ端子から前記Ｃ端子に信号を伝達する信号伝達
経路を形成すると共に前記Ｄ端子から前記Ｂ端子
に信号を伝達する信号伝達経路を形成し、且つ、
前記信号検出手段により前記Ｂ端子に信号が入力
されたことが検出されると、前記Ｂ端子から前記
Ｃ端子に信号を伝達する信号伝達経路を形成する
と共に前記Ｄ端子から前記Ａ端子に信号を伝達す
る信号伝達経路を形成する伝達経路切替手段とを
具備したことを特徴とするインタフエース回路。 A terminal to which the cable is detachably connected; a B terminal to which the cable is detachably connected; a C terminal to which the input side of the signal receiving circuit is connected; a D terminal to which the output side of the signal transmitting circuit is connected; terminal and said B
a signal detection means for detecting which of the terminals a signal is inputted; and when the signal detection means detects that a signal is inputted to the A terminal, the signal is transmitted from the A terminal to the C terminal. forming a signal transmission path and transmitting a signal from the D terminal to the B terminal, and
When the signal detecting means detects that a signal is input to the B terminal, a signal transmission path is formed to transmit the signal from the B terminal to the C terminal, and a signal is transmitted from the D terminal to the A terminal. 1. An interface circuit comprising: transmission path switching means for forming a signal transmission path for transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990076107U JPH0434035U (en) | 1990-07-19 | 1990-07-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990076107U JPH0434035U (en) | 1990-07-19 | 1990-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0434035U true JPH0434035U (en) | 1992-03-19 |
Family
ID=31617284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990076107U Pending JPH0434035U (en) | 1990-07-19 | 1990-07-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0434035U (en) |
-
1990
- 1990-07-19 JP JP1990076107U patent/JPH0434035U/ja active Pending
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