JPS63183733U - - Google Patents
Info
- Publication number
- JPS63183733U JPS63183733U JP7372887U JP7372887U JPS63183733U JP S63183733 U JPS63183733 U JP S63183733U JP 7372887 U JP7372887 U JP 7372887U JP 7372887 U JP7372887 U JP 7372887U JP S63183733 U JPS63183733 U JP S63183733U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- ringtone
- current
- telephone
- signal
- 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
Description
第１図は、本考案の一実施例に係る電話機の着
信音調整回路のブロツク図、第２図は従来の電話
機の着信音調整回路のブロツク図である。
１１……電源部、１１ａ，１１ｂ……入力端子
、１２……発振回路、１３……制御回路、１４…
…光電変換回路例えば受光素子、１５……電流―
電圧変換回路、１６……増幅回路、１７……サウ
ンダ。
FIG. 1 is a block diagram of a ring tone adjusting circuit for a telephone according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional ring tone adjusting circuit for a telephone. DESCRIPTION OF SYMBOLS 11... Power supply part, 11a, 11b... Input terminal, 12... Oscillation circuit, 13... Control circuit, 14...
...Photoelectric conversion circuit, e.g. light receiving element, 15...Current -
Voltage conversion circuit, 16... amplifier circuit, 17... sounder.
Claims (1)
の電源部に接続され、発振信号を発生する発振回
路と、この発振信号を間欠的に制御して着信音信
号が発せられる制御回路と、この制御回路の後段
に接続され、電話機が配置される周囲の照度を検
出して電流に変換する光電変換回路と、この電流
を電圧の変化量に変換する電流―電圧変換回路と
、前記制御回路に接続された増幅回路と、この増
幅回路に接続されたサウンダとを具備し、前記電
圧の変化量に応じて着信音の音量を可変すること
を特徴とした電話機の着信音調整回路。 (2) 光電変換回路の受光部を電話機の近傍に設
けた実用新案登録請求の範囲第１項記載の電話機
の着信音調整回路。[Claims for Utility Model Registration] (1) A power supply unit having an input terminal for an AC signal, an oscillation circuit connected to the power supply unit and generating an oscillation signal, and a ringtone by intermittently controlling the oscillation signal. A control circuit that emits a signal, a photoelectric conversion circuit that is connected after this control circuit and that detects the illuminance around the phone and converts it into a current, and a current that converts this current into a voltage change. A telephone comprising a voltage conversion circuit, an amplifier circuit connected to the control circuit, and a sounder connected to the amplifier circuit, and capable of varying the volume of a ringtone according to the amount of change in the voltage. ringtone adjustment circuit. (2) A ringtone adjustment circuit for a telephone according to claim 1 of the utility model registration claim, wherein the light receiving part of the photoelectric conversion circuit is provided near the telephone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7372887U JPS63183733U (en) | 1987-05-19 | 1987-05-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7372887U JPS63183733U (en) | 1987-05-19 | 1987-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63183733U true JPS63183733U (en) | 1988-11-25 |
Family
ID=30918318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7372887U Pending JPS63183733U (en) | 1987-05-19 | 1987-05-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63183733U (en) |
-
1987
- 1987-05-19 JP JP7372887U patent/JPS63183733U/ja active Pending
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