JPH02113454U - - Google Patents
Info
- Publication number
- JPH02113454U JPH02113454U JP2179089U JP2179089U JPH02113454U JP H02113454 U JPH02113454 U JP H02113454U JP 2179089 U JP2179089 U JP 2179089U JP 2179089 U JP2179089 U JP 2179089U JP H02113454 U JPH02113454 U JP H02113454U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- general
- modem
- transmission line
- matching
- 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 7
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Small-Scale Networks (AREA)
Description
第１図は本発明の一実施例を示すブロツク図で
ある。
１……汎用モデム、２……二線式伝送線路、３
……第１の整合トランス、４……第２の整合トラ
ンス、５……分岐回路としての分岐用ハイブリツ
ドコイル、６……一方のオン−オフ回路、７……
他方のオン−オフ回路、８……切換制御手段。
FIG. 1 is a block diagram showing one embodiment of the present invention. 1... General-purpose modem, 2... Two-wire transmission line, 3
...First matching transformer, 4... Second matching transformer, 5... Branch hybrid coil as a branch circuit, 6... One on-off circuit, 7...
The other on-off circuit, 8... switching control means.
Claims (1)
ロツプ接続する第１の整合トランスと、前記二線
式伝送線路から送られてくる信号を受信し前記汎
用モデルに送り込む第２の整合トランスとを設け
、 前記第１及び第２の各整合トランスと前記汎用
モデムとの間に、送受信信号を分岐出力する分岐
回路を設けるとともに、前記第１及び第２の各整
合トランスと二線式伝送線路との間には、送受信
時に作動するオン−オフ回路を各別に装備し、 前記データ端末装置からの送信要求指令によつ
て作動し前記オン−オフ回路を送信モード又は受
信モードに切換え制御する切換制御手段を具備し
たことを特徴とするモデムアダプタ装置。[Claims for Utility Model Registration] A first matching transformer that connects the output of a general-purpose modem to a two-wire transmission line in a multi-drop manner, and a first matching transformer that receives a signal sent from the two-wire transmission line and sends it to the general-purpose model. A branch circuit for branching and outputting a transmission/reception signal is provided between each of the first and second matching transformers and the general-purpose modem, and a branch circuit is provided between each of the first and second matching transformers and the general modem. A separate on-off circuit is provided between the two-wire transmission line and operates during transmission and reception, and the on-off circuit is operated in response to a transmission request command from the data terminal device to set the on-off circuit to either a transmit mode or a receive mode. What is claimed is: 1. A modem adapter device comprising switching control means for controlling switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2179089U JPH02113454U (en) | 1989-02-27 | 1989-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2179089U JPH02113454U (en) | 1989-02-27 | 1989-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02113454U true JPH02113454U (en) | 1990-09-11 |
Family
ID=31239328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2179089U Pending JPH02113454U (en) | 1989-02-27 | 1989-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02113454U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015213752A (en) * | 2014-05-07 | 2015-12-03 | コヴィディエン リミテッド パートナーシップ | Authentication and information system for reusable surgical instruments |
-
1989
- 1989-02-27 JP JP2179089U patent/JPH02113454U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015213752A (en) * | 2014-05-07 | 2015-12-03 | コヴィディエン リミテッド パートナーシップ | Authentication and information system for reusable surgical instruments |