JPS63140751U - - Google Patents
Info
- Publication number
- JPS63140751U JPS63140751U JP3265287U JP3265287U JPS63140751U JP S63140751 U JPS63140751 U JP S63140751U JP 3265287 U JP3265287 U JP 3265287U JP 3265287 U JP3265287 U JP 3265287U JP S63140751 U JPS63140751 U JP S63140751U
- Authority
- JP
- Japan
- Prior art keywords
- loudness
- detecting
- utility
- scope
- registration request
- 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 description 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の電話機のブロツク図である。
１……端子、２……音圧検出回路、３……抵抗
回路、４……電鈴回路、５……通話回路、６……
呼出し信号。
回路、４……電鈴回路、５……通話回路、６……
呼出し信号。
Claims (1)
- 周囲の音の大きさを検出して、呼出し音量を自
動的に切替える手段を具備して成ることを特徴と
する電話機。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3265287U JPS63140751U (ja) | 1987-03-05 | 1987-03-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3265287U JPS63140751U (ja) | 1987-03-05 | 1987-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63140751U true JPS63140751U (ja) | 1988-09-16 |
Family
ID=30839535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3265287U Pending JPS63140751U (ja) | 1987-03-05 | 1987-03-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63140751U (ja) |
-
1987
- 1987-03-05 JP JP3265287U patent/JPS63140751U/ja active Pending