JPH039550U - - Google Patents
Info
- Publication number
- JPH039550U JPH039550U JP6950189U JP6950189U JPH039550U JP H039550 U JPH039550 U JP H039550U JP 6950189 U JP6950189 U JP 6950189U JP 6950189 U JP6950189 U JP 6950189U JP H039550 U JPH039550 U JP H039550U
- Authority
- JP
- Japan
- Prior art keywords
- ring tone
- section
- speaker
- incoming call
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の一実施例のブロツク図である
。
１００…着信検出部、１０１…コンデンサ、１
０２…ブリツジ整流回路、１０３…フオトカプラ
、２００…制御選択部、２０１…カウンタ回路、
２０２…クロツクパルス発生回路、２０３…ゲー
ト、２０４，２０６，２０７…セレクタ回路、２
０５…スイツチ回路、２０８…低レベル発生回路
、２０９…高レベル発生回路、２１０…音圧検出
回路、２１１…音圧検出器、２１２…光検出器、
２１３…コンバータ回路、２１４…差動増幅器、
３００…音量調整部、４００…呼出音発生部、５
００…スピーカ、Ａ，Ｂ…通話線。
FIG. 1 is a block diagram of one embodiment of the present invention. 100... Incoming call detection section, 101... Capacitor, 1
02... Bridge rectifier circuit, 103... Photocoupler, 200... Control selection section, 201... Counter circuit,
202... Clock pulse generation circuit, 203... Gate, 204, 206, 207... Selector circuit, 2
05...Switch circuit, 208...Low level generation circuit, 209...High level generation circuit, 210...Sound pressure detection circuit, 211...Sound pressure detector, 212...Photodetector,
213...Converter circuit, 214...Differential amplifier,
300...Volume adjustment section, 400...Ring tone generation section, 5
00...Speaker, A, B...Talking line.
Claims (1)
するスピーカと、このスピーカを駆動する呼出音
信号を発生するる呼出音発生部を、周囲環境に応
じて２段階以上に変化する音量設定信号及び前記
着信検出部の出力で起動され時間と共に単調に変
化する音量増加信号の少なくとも一方を選択して
出力する制御選択部と、前記呼出音発生部とスピ
ーカとの間に接続され前記制御選択部の出力で利
得が制御される音量調整とを備えたこをを特徴と
する電話機呼出音回路。 An incoming call detection section that detects an incoming call signal, a speaker that emits a ring tone, and a ring tone generation section that generates a ring tone signal that drives the speaker, and a volume setting signal that changes in two or more levels depending on the surrounding environment. a control selection section that is activated by the output of the incoming call detection section and selects and outputs at least one of the volume increasing signals that monotonically changes with time; and a control selection section that is connected between the ring tone generation section and the speaker. A telephone ringer circuit comprising: a volume adjustment whose gain is controlled by the output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6950189U JPH039550U (en) | 1989-06-13 | 1989-06-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6950189U JPH039550U (en) | 1989-06-13 | 1989-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH039550U true JPH039550U (en) | 1991-01-29 |
Family
ID=31604859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6950189U Pending JPH039550U (en) | 1989-06-13 | 1989-06-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH039550U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63237647A (en) * | 1987-03-26 | 1988-10-04 | Toshiba Corp | Ringing tone sounding circuit for telephone set |
| JPS63314052A (en) * | 1987-06-17 | 1988-12-22 | Oki Electric Ind Co Ltd | Controller for ringing tone at telephone terminal |
-
1989
- 1989-06-13 JP JP6950189U patent/JPH039550U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63237647A (en) * | 1987-03-26 | 1988-10-04 | Toshiba Corp | Ringing tone sounding circuit for telephone set |
| JPS63314052A (en) * | 1987-06-17 | 1988-12-22 | Oki Electric Ind Co Ltd | Controller for ringing tone at telephone terminal |
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