JPH0427646U - - Google Patents
Info
- Publication number
- JPH0427646U JPH0427646U JP6890090U JP6890090U JPH0427646U JP H0427646 U JPH0427646 U JP H0427646U JP 6890090 U JP6890090 U JP 6890090U JP 6890090 U JP6890090 U JP 6890090U JP H0427646 U JPH0427646 U JP H0427646U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- input
- circuit
- detection means
- 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
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Studio Circuits (AREA)
- Dc Digital Transmission (AREA)
Description
第１図は、本考案の信号切換装置の一実施例の
構成を示すブロツク図、第２図は、第１図のフリ
ツプフロツプ１８の動作を示すフローチヤート、
第３図は、本考案の信号切換装置の別の実施例の
構成を示すブロツク図、第４図は、従来回路の一
例を示すブロツク図である。
１……入出力共用端子、２……入出力切換スイ
ツチ、３……信号入力回路、４……信号出力回路
、５……入出力信号検出回路、６……出力信号検
出回路、７……出力信号切換スイツチ、８……出
力信号切換用信号発生回路、９……入出力切換制
御回路、１０……出力信号切換回路、１８……フ
リツプフロツプ。
FIG. 1 is a block diagram showing the configuration of an embodiment of the signal switching device of the present invention, and FIG. 2 is a flowchart showing the operation of the flip-flop 18 of FIG.
FIG. 3 is a block diagram showing the configuration of another embodiment of the signal switching device of the present invention, and FIG. 4 is a block diagram showing an example of a conventional circuit. 1... Input/output common terminal, 2... Input/output selector switch, 3... Signal input circuit, 4... Signal output circuit, 5... Input/output signal detection circuit, 6... Output signal detection circuit, 7... Output signal changeover switch, 8... signal generation circuit for output signal changeover, 9... input/output changeover control circuit, 10... output signal changeover circuit, 18... flip-flop.
Claims (1)
する端子信号検出手段と、 前記信号出力回路から発生された出力信号を検
出する出力信号検出手段と、 前記信号入力回路への入力信号を検出する入力
信号検出手段と、 前記端子信号検出手段、前記出力信号検出手段
、および前記入力信号検出手段の出力に基づいて
、前記信号出力回路および前記信号入力回路と前
記入出力共用端子との接続を制御する制御手段と を備える信号切換装置。[Scope of claim for utility model registration] An input/output common terminal, a signal output circuit that generates an output signal to the outside, a signal input circuit that receives an input signal from the outside, and detecting the presence or absence of a signal at the input/output common terminal. output signal detection means for detecting an output signal generated from the signal output circuit; input signal detection means for detecting an input signal to the signal input circuit; A signal switching device comprising: output signal detection means; and control means for controlling connection between the signal output circuit, the signal input circuit, and the input/output common terminal based on the output of the input signal detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6890090U JPH0427646U (en) | 1990-06-27 | 1990-06-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6890090U JPH0427646U (en) | 1990-06-27 | 1990-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0427646U true JPH0427646U (en) | 1992-03-05 |
Family
ID=31603742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6890090U Pending JPH0427646U (en) | 1990-06-27 | 1990-06-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0427646U (en) |
-
1990
- 1990-06-27 JP JP6890090U patent/JPH0427646U/ja active Pending
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