JPS61121044U - - Google Patents
Info
- Publication number
- JPS61121044U JPS61121044U JP1985003898U JP389885U JPS61121044U JP S61121044 U JPS61121044 U JP S61121044U JP 1985003898 U JP1985003898 U JP 1985003898U JP 389885 U JP389885 U JP 389885U JP S61121044 U JPS61121044 U JP S61121044U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- telephone
- calling
- discharging
- 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
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Mobile Radio Communication Systems (AREA)
Description
第１図は本考案の無線電話機の呼出し信号回路
図、第２図ａ〜第２図ｃは本考案の各部の信号波
形図、第３図ａ及び第３図ｂはサージパルス信号
に対する各部の信号波形図である。
１……本電話機、２……無線電話機、３……電
話回線閉結回路、６……呼出し回路、１６……呼
出し検出回路、１７……信号波形成形回路、１８
……積分回路、２０……抵抗、２１……放電用ダ
イオード、２３……放電用抵抗。
Figure 1 is a calling signal circuit diagram of the wireless telephone of the present invention, Figures 2a to 2c are signal waveform diagrams of each part of the present invention, and Figures 3a and 3b are diagrams of each part in response to a surge pulse signal. It is a signal waveform diagram. DESCRIPTION OF SYMBOLS 1... This telephone, 2 ... Wireless telephone, 3... Telephone line closing circuit, 6... Calling circuit, 16... Calling detection circuit, 17... Signal waveform shaping circuit, 18
...Integrator circuit, 20...Resistor, 21...Discharge diode, 23...Discharge resistor.
Claims (1)
ものにおいて、前記無線電話機の呼出し回路に呼
出し信号の周波数に対応するパルス信号を出力す
る信号波形成形回路と該信号波形成形回路からの
パルス信号を積分する積分回路と、該積分回路の
抵抗に並列に接続した放電用ダイオードと、該放
電用ダイオードの一端に接続した放電用抵抗とを
設けたことを特徴とする無線電話機の呼出し信号
検出回路。 In a device in which this telephone and a wireless telephone are connected to a telephone line, a signal waveform shaping circuit outputs a pulse signal corresponding to the frequency of the calling signal to the calling circuit of the wireless telephone, and a pulse signal from the signal waveform shaping circuit is integrated. 1. A call signal detection circuit for a radio telephone, comprising: an integrating circuit for detecting a signal, a discharging diode connected in parallel to a resistor of the integrating circuit, and a discharging resistor connected to one end of the discharging diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985003898U JPS61121044U (en) | 1985-01-16 | 1985-01-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985003898U JPS61121044U (en) | 1985-01-16 | 1985-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61121044U true JPS61121044U (en) | 1986-07-30 |
Family
ID=30478957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985003898U Pending JPS61121044U (en) | 1985-01-16 | 1985-01-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61121044U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5394707A (en) * | 1977-01-31 | 1978-08-19 | Tamura Electric Works Ltd | Circuit for identifying dial impulse signal and incoming signal of telephone set |
| JPS5676666A (en) * | 1979-11-29 | 1981-06-24 | Nippon Telegr & Teleph Corp <Ntt> | Detection circuit for call-out signal |
-
1985
- 1985-01-16 JP JP1985003898U patent/JPS61121044U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5394707A (en) * | 1977-01-31 | 1978-08-19 | Tamura Electric Works Ltd | Circuit for identifying dial impulse signal and incoming signal of telephone set |
| JPS5676666A (en) * | 1979-11-29 | 1981-06-24 | Nippon Telegr & Teleph Corp <Ntt> | Detection circuit for call-out signal |