JPS623151U - - Google Patents
Info
- Publication number
- JPS623151U JPS623151U JP1985094329U JP9432985U JPS623151U JP S623151 U JPS623151 U JP S623151U JP 1985094329 U JP1985094329 U JP 1985094329U JP 9432985 U JP9432985 U JP 9432985U JP S623151 U JPS623151 U JP S623151U
- Authority
- JP
- Japan
- Prior art keywords
- turned
- switch
- display
- telephone line
- display element
- 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
- 230000005236 sound signal Effects 0.000 claims 3
- 239000003990 capacitor Substances 0.000 claims 2
- 239000000284 extract Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/68—Circuit arrangements for preventing eavesdropping
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Description
第１図、第２図はこの考案の一例の接続図、第
３図はその説明のための図である。
１は電話機本体、２はハンドセツト、３はイン
ユース回路である。
1 and 2 are connection diagrams of an example of this invention, and FIG. 3 is a diagram for explaining the same. 1 is a telephone body, 2 is a handset, and 3 is an in-use circuit.
Claims (1)
を取り出すコンデンサと、 このコンデンサの出力信号によりオンオフ制御
されるトランジスタと、 このトランジスタにより点灯および消灯が制御
される表示素子と、 フツクスイツチのオンオフに連動してオンオフ
制御されて上記表示素子の点灯および消灯を制御
するスイツチ素子とを有し、 フツクオンのときには、上記電話回線の上記音
声信号により上記トランジスタがオンオフされて
上記表示素子が点滅され、 フツクオフのときには、上記電話回線の上記音
声信号にかかわらず、上記スイツチ素子により上
記表示素子は消灯されるようにした電話機。[Claim for Utility Model Registration] A capacitor that is connected to a telephone line and extracts audio signals from the telephone line, a transistor that is controlled on and off by the output signal of this capacitor, and a display element that is turned on and off by this transistor. and a switch element that is controlled to turn on and off in conjunction with the on/off operation of the switch to control lighting and extinguishing of the display element, and when the switch is on, the transistor is turned on and off by the audio signal from the telephone line to display the display. The telephone device is configured such that the display element is turned off by the switch element, and when the display element is turned off, the display element is turned off by the switch element, regardless of the audio signal of the telephone line.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985094329U JPS623151U (en) | 1985-06-21 | 1985-06-21 | |
| KR2019860006820U KR920005401Y1 (en) | 1985-06-21 | 1986-05-17 | A telephone circuit for displaying on-use state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985094329U JPS623151U (en) | 1985-06-21 | 1985-06-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS623151U true JPS623151U (en) | 1987-01-09 |
Family
ID=14107238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985094329U Pending JPS623151U (en) | 1985-06-21 | 1985-06-21 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS623151U (en) |
| KR (1) | KR920005401Y1 (en) |
-
1985
- 1985-06-21 JP JP1985094329U patent/JPS623151U/ja active Pending
-
1986
- 1986-05-17 KR KR2019860006820U patent/KR920005401Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR870001329U (en) | 1987-02-20 |
| KR920005401Y1 (en) | 1992-08-08 |
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