JPH021950U - - Google Patents
Info
- Publication number
- JPH021950U JPH021950U JP8012488U JP8012488U JPH021950U JP H021950 U JPH021950 U JP H021950U JP 8012488 U JP8012488 U JP 8012488U JP 8012488 U JP8012488 U JP 8012488U JP H021950 U JPH021950 U JP H021950U
- Authority
- JP
- Japan
- Prior art keywords
- telephone number
- number data
- operation switch
- dial tone
- dial
- 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図は本実施例のダイアル周波数発生装置の
ブロツク図、第２図ａは低周波信号の波形例を示
す図、第２図ｂは高周波数信号の波形例を示す図
、第２図ｃは合成周波数信号の波形例を示す図、
第３図は本実施例のダイアル周波数発生回路の回
路動作を説明するフローチヤートである。
１……ＣＰＵ、２……ＲＯＭ、３……スイツチ
部、４……ＲＡＭ、５……デイスプレイ、６，７
……ダイアル周波数発生回路、８……合成回路、
９……差動増幅器、１０……スピーカ、Ｔｒ１〜
Ｔｒ３……トランジスタ、Ｒｆ１〜Ｒｆ３……抵
抗。
Figure 1 is a block diagram of the dial frequency generator of this embodiment, Figure 2a is a diagram showing an example of the waveform of a low frequency signal, Figure 2b is a diagram showing an example of the waveform of a high frequency signal, and Figure 2c is a diagram showing an example of the waveform of a high frequency signal. is a diagram showing an example waveform of a composite frequency signal,
FIG. 3 is a flowchart illustrating the circuit operation of the dial frequency generating circuit of this embodiment. 1...CPU, 2...ROM, 3...Switch unit, 4...RAM, 5...Display, 6,7
...Dial frequency generation circuit, 8...Synthesizing circuit,
9... Differential amplifier, 10... Speaker, Tr 1 ~
Tr3 ...transistor, Rf1 - Rf3 ...resistance.
Claims (1)
手段と、この電話番号データ記憶手段に記憶され
た電話番号データに対応する周波数のダイアル音
を出力する為に操作される操作スイツチと、この
操作スイツチが操作される毎に前記ダイアル音の
出力レベルを変換させる出力レベル変換手段とを
備えたことを特徴とするダイアル周波数発生装置
。 A telephone number data storage means for storing telephone number data, an operation switch operated to output a dial tone of a frequency corresponding to the telephone number data stored in the telephone number data storage means, and an operation switch operated by the operation switch. a dial frequency generator comprising output level converting means for converting the output level of the dial tone each time the dial tone is input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8012488U JPH021950U (en) | 1988-06-16 | 1988-06-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8012488U JPH021950U (en) | 1988-06-16 | 1988-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH021950U true JPH021950U (en) | 1990-01-09 |
Family
ID=31304967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8012488U Pending JPH021950U (en) | 1988-06-16 | 1988-06-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH021950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6229134U (en) * | 1985-08-05 | 1987-02-21 |
-
1988
- 1988-06-16 JP JP8012488U patent/JPH021950U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6229134U (en) * | 1985-08-05 | 1987-02-21 |
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