JPH048128U - - Google Patents
Info
- Publication number
- JPH048128U JPH048128U JP4599990U JP4599990U JPH048128U JP H048128 U JPH048128 U JP H048128U JP 4599990 U JP4599990 U JP 4599990U JP 4599990 U JP4599990 U JP 4599990U JP H048128 U JPH048128 U JP H048128U
- Authority
- JP
- Japan
- Prior art keywords
- switch
- expansion board
- data bus
- computer
- turn
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Power Sources (AREA)
Description
図は本考案の一実施例を示し、第１図はスタン
バイ回路のブロツク図、第２図は前記スタンバイ
回路を設けたモデムをコンピユータへ接続した場
合のスタンバイ動作のフローチヤート、第３図は
コンピユータからのコントロールにより通信を開
始する場合のフローチヤート、第４図は呼出し信
号の検知により通信を開始する場合のフローチヤ
ートである。
１……モデム、２……拡張ボード、３……スタ
ンバイ回路、７……電池、７……アドレスデコー
ダ、８……データバス、９……スイツチ、１０…
…電源ライン、１１……電源スイツチ、１２……
コンピユータ、１４……割込みコントロール回路
、１５……電源コントロール回路。
The figures show one embodiment of the present invention, in which Figure 1 is a block diagram of a standby circuit, Figure 2 is a flowchart of standby operation when a modem equipped with the standby circuit is connected to a computer, and Figure 3 is a diagram of a computer. FIG. 4 is a flowchart when communication is started by control from a call signal. FIG. 4 is a flowchart when communication is started by detection of a calling signal. 1... Modem, 2... Expansion board, 3... Standby circuit, 7... Battery, 7... Address decoder, 8... Data bus, 9... Switch, 10...
...Power line, 11...Power switch, 12...
Computer, 14...Interrupt control circuit, 15...Power control circuit.
Claims (1)
ドに於て、前記拡張ボードのデータバスと電源ラ
インに夫々スイツチを設け、前記電源ラインを電
源電池に接続するとともに、前記コンピユータか
らのアクセス命令によつて前記スイツチをオンと
し、アクセス終了命令によつて前記スイツチをオ
フとする制御手段を前記データバスに接続した拡
張ボードのスタンバイ回路。 In an expansion board connected to a data bus of a computer, a switch is provided for each of the data bus and power line of the expansion board, and the power line is connected to a power battery, and the switch is activated by an access command from the computer. a standby circuit for an expansion board, the expansion board having a control means connected to the data bus to turn on the switch and turn off the switch in response to an access end command;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4599990U JPH048128U (en) | 1990-04-28 | 1990-04-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4599990U JPH048128U (en) | 1990-04-28 | 1990-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH048128U true JPH048128U (en) | 1992-01-24 |
Family
ID=31560687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4599990U Pending JPH048128U (en) | 1990-04-28 | 1990-04-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH048128U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08286572A (en) * | 1995-04-14 | 1996-11-01 | Ricoh Co Ltd | Image forming device |
-
1990
- 1990-04-28 JP JP4599990U patent/JPH048128U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08286572A (en) * | 1995-04-14 | 1996-11-01 | Ricoh Co Ltd | Image forming device |
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