JPS6266451U - - Google Patents
Info
- Publication number
- JPS6266451U JPS6266451U JP15798485U JP15798485U JPS6266451U JP S6266451 U JPS6266451 U JP S6266451U JP 15798485 U JP15798485 U JP 15798485U JP 15798485 U JP15798485 U JP 15798485U JP S6266451 U JPS6266451 U JP S6266451U
- Authority
- JP
- Japan
- Prior art keywords
- hook
- circuit
- telephone line
- output
- state
- 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 8
- 238000012790 confirmation Methods 0.000 claims description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
Description
図は本考案の一実施例としてのオンフツク状態
報知回路のブロツク図を示めす。
主な図番の説明、１……電圧検出回路、５……
パルス幅識別回路路、６……オンフツク確認スイ
ツチ、７……判別回路、１１……オンフツク検出
回路、１２……報知信号発生回路。
The figure shows a block diagram of an on-hook state notification circuit as an embodiment of the present invention. Explanation of main drawing numbers, 1... Voltage detection circuit, 5...
Pulse width identification circuit, 6... On-hook confirmation switch, 7... Discrimination circuit, 11... On-hook detection circuit, 12... Notification signal generation circuit.
Claims (1)
電話機において、電話回線の電圧を検出するため
の電圧検出回路と、該電圧検出回路の出力を一定
期間検知できる検知信号を出すパルス幅識別回路
と、電話回線のオンフツク状態の確認操作時に切
り換えられるオンフツク確認スイツチと、電話回
線がオンフツク状態の時のみ前記オンフツク確認
スイツチのオンフツク確認状態の切り換えにより
出力を出す判別回路と、該判別回路が出力を出し
ている時に電話回線がオンフツク状態になつてい
ることが検出されると出力を出すオンフツク検出
回路と、該オンフツク検出回路が出力を出した時
動作する報知信号発生回路と、フツクスイツチを
オフフツクすることによつて前記オンフツク検出
回路よりの出力を停止させる制御回路とより成り
、オンフツク状態の確認を行なつている時に他の
電話機よりの信号を誤確認して誤動作しないよう
にしたことを特徴とするオンフツク状態報知回路
。 In at least two telephones connected in parallel to the same line, a voltage detection circuit for detecting the voltage of the telephone line, and a pulse width identification circuit that outputs a detection signal capable of detecting the output of the voltage detection circuit for a certain period of time; an on-hook confirmation switch that is switched during an operation to confirm the on-hook state of the telephone line; a discrimination circuit that outputs an output by switching the on-hook confirmation state of the on-hook confirmation switch only when the telephone line is in the on-hook state; an on-hook detection circuit that outputs an output when it is detected that the telephone line is in an on-hook state while the telephone line is in an on-hook state, an alarm signal generation circuit that operates when the on-hook detection circuit outputs an output, and a notification signal generation circuit that operates by turning off the telephone line. and a control circuit for stopping the output from the on-hook detection circuit, and the on-hook state is characterized in that the on-hook state is prevented from erroneously confirming a signal from another telephone and malfunctioning when the on-hook state is being checked. Notification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15798485U JPS6266451U (en) | 1985-10-16 | 1985-10-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15798485U JPS6266451U (en) | 1985-10-16 | 1985-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6266451U true JPS6266451U (en) | 1987-04-24 |
Family
ID=31081043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15798485U Pending JPS6266451U (en) | 1985-10-16 | 1985-10-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6266451U (en) |
-
1985
- 1985-10-16 JP JP15798485U patent/JPS6266451U/ja active Pending
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