JPS6448958U - - Google Patents
Info
- Publication number
- JPS6448958U JPS6448958U JP14321487U JP14321487U JPS6448958U JP S6448958 U JPS6448958 U JP S6448958U JP 14321487 U JP14321487 U JP 14321487U JP 14321487 U JP14321487 U JP 14321487U JP S6448958 U JPS6448958 U JP S6448958U
- Authority
- JP
- Japan
- Prior art keywords
- tone
- logic level
- control terminal
- pulse
- pulse 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Description
第１図は本考案の一実施例の電話装置１０の電
気的構成を示すブロツク図、第２図はトーン／パ
ルス信号発生源１５の具体的な電気回路図、第３
図典型的な先行技術の電気回路図である。
４……トーン／パルス信号発生回路、１０……
電話装置、１６……操作部、１７……テンキー、
１８……回線用切替キー、１９……信号モード切
替キー、２０……論理設定回路、４０……トーン
／パルス信号発生装置、Ｇ１，Ｇ２……ＮＡＮＤ
ゲート、Ｃ１１，Ｃ１２……コンデンサ、Ｓ１…
…フツクスイツチ、Ｓ２……切替スイツチ、Ｓ１
１……信号モード切替用スイツチ、ＦＦ１……フ
リツプフロツプ、Ｐ／Ｔ……制御端子。
FIG. 1 is a block diagram showing the electrical configuration of a telephone device 10 according to an embodiment of the present invention, FIG. 2 is a specific electrical circuit diagram of the tone/pulse signal generation source 15, and FIG.
FIG. 1 is a typical prior art electrical circuit diagram. 4...Tone/pulse signal generation circuit, 10...
Telephone device, 16...operation unit, 17...numeric keypad,
18...Line switching key, 19...Signal mode switching key, 20...Logic setting circuit, 40...Tone/pulse signal generator, G1, G2...NAND
Gate, C11, C12...Capacitor, S1...
...Hook switch, S2...Changing switch, S1
1...Signal mode switching switch, FF1...Flip-flop, P/T...Control terminal.
Claims (1)
御端子の論理レベルに対応してトーン信号または
パルス信号のいずれかを発生するトーン／パルス
信号発生回路と、 トーンダイヤル回線とパルスダイヤル回線の選
択に応じて、手動操作によつて前記制御端子の論
理レベルを選択された回線に応じた論理レベルに
切替えて固定化する回線用切替スイツチと、 パルス信号モードからトーン信号モードに切替
える手動操作手段と、 パルスダイヤル回線通話時において前記手動操
作手段が操作されたとき、前記制御端子の論理レ
ベルをトーン信号側の論理レベルに強制的に設定
すると共に、オンフツクによつて制御端子の論理
レベルを元のパルス信号側に復帰させる論理設定
回路とを備えたことを特徴とするトーン／パルス
信号発生装置。[Claims for Utility Model Registration] A tone/pulse signal generation circuit that includes a tone/pulse signal setting control terminal and generates either a tone signal or a pulse signal depending on the logic level of the control terminal, and a tone dial line. and a line changeover switch that manually switches and fixes the logic level of the control terminal to the logic level corresponding to the selected line according to the selection of the pulse dial line; manual operating means for switching to a tone signal side; and when the manual operating means is operated during a pulse dial line call, the logic level of the control terminal is forcibly set to the logic level of the tone signal side, and the control terminal is switched to the tone signal side by an on-hook. and a logic setting circuit for returning the logic level of the signal to the original pulse signal side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14321487U JPS6448958U (en) | 1987-09-18 | 1987-09-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14321487U JPS6448958U (en) | 1987-09-18 | 1987-09-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6448958U true JPS6448958U (en) | 1989-03-27 |
Family
ID=31409833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14321487U Pending JPS6448958U (en) | 1987-09-18 | 1987-09-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6448958U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59185455A (en) * | 1983-04-05 | 1984-10-22 | Matsushita Electric Ind Co Ltd | Telephone set |
| JPS61247150A (en) * | 1985-04-25 | 1986-11-04 | Fujitsu Ltd | Dp/pb signal switching method for telephone terminal equipment |
| JPS6237472B2 (en) * | 1982-12-28 | 1987-08-12 | Mostek Corp |
-
1987
- 1987-09-18 JP JP14321487U patent/JPS6448958U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6237472B2 (en) * | 1982-12-28 | 1987-08-12 | Mostek Corp | |
| JPS59185455A (en) * | 1983-04-05 | 1984-10-22 | Matsushita Electric Ind Co Ltd | Telephone set |
| JPS61247150A (en) * | 1985-04-25 | 1986-11-04 | Fujitsu Ltd | Dp/pb signal switching method for telephone terminal equipment |
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