JPH0419046U - - Google Patents
Info
- Publication number
- JPH0419046U JPH0419046U JP5948690U JP5948690U JPH0419046U JP H0419046 U JPH0419046 U JP H0419046U JP 5948690 U JP5948690 U JP 5948690U JP 5948690 U JP5948690 U JP 5948690U JP H0419046 U JPH0419046 U JP H0419046U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- dtmf
- irregular
- dtmf signal
- signal input
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Description
第１図は本考案の一実施例であるＤＴＭＦ信号
の変換装置及び復元装置を利用した一方向通信シ
ステムの電気回路ブロツク図、第２図はそのＤＴ
ＭＦ信号の変換装置及び復元装置を複数利用した
双方向通信システムの電気回路ブロツク図を示し
ている。
１０……変換装置、２０……復元装置、１０ａ
，２０ａ……極性反転検出回路、１０ｂ，２０ｂ
……切替リレー、１０ｃ……信号変換回路、２０
ｃ……信号復元回路、３０……ＤＴＭＦ信号送信
機、４０……公衆電話回線、５０……ＤＴＭＦ信
号受信機、６０……ＤＴＭＦ信号送受信装置。
Figure 1 is an electrical circuit block diagram of a one-way communication system using a DTMF signal converter and restorer, which is an embodiment of the present invention.
1 shows an electric circuit block diagram of a two-way communication system using a plurality of MF signal conversion devices and restoration devices. 10... Conversion device, 20... Restoration device, 10a
, 20a...Polarity reversal detection circuit, 10b, 20b
...Switching relay, 10c...Signal conversion circuit, 20
c... Signal restoration circuit, 30... DTMF signal transmitter, 40... Public telephone line, 50... DTMF signal receiver, 60... DTMF signal transmitting/receiving device.
Claims (1)
ら出力されるＤＴＭＦ信号を入力するＤＴＭＦ信
号入力部と、 該ＤＴＭＦ信号入力部により入力されたＤＴＭ
Ｆ信号を所定規則に則り周波数の異なる変則信号
として電話回線へ出力する信号変更出力部と、 を備えたことを特徴とするＤＴＭＦ信号の変換装
置。 ２ 所定規則に則り周波数の異なる変則信号に変
換されたＤＴＭＦ信号を電話回線から入力する変
則信号入力部と、 該変則信号入力部より入力された前記変則信号
を前記所定規則に則りＤＴＭＦ信号に復元してＤ
ＴＭＦ信号によるデータ通信を行う機器に出力す
る信号復元出力部と、 を備えたことを特徴とするＤＴＭＦ信号の復元装
置。[Claims for Utility Model Registration] 1. A DTMF signal input unit that inputs a DTMF signal output from a device that performs data communication using DTMF signals, and a DTM input by the DTMF signal input unit.
1. A DTMF signal conversion device comprising: a signal change output section that outputs the F signal as an irregular signal having a different frequency to a telephone line according to a predetermined rule. 2. An irregular signal input section that inputs from a telephone line a DTMF signal that has been converted into an irregular signal with a different frequency according to a predetermined rule, and restores the irregular signal input from the irregular signal input section to a DTMF signal according to the predetermined rule. Do D
A DTMF signal restoration device comprising: a signal restoration output section for outputting to a device that performs data communication using TMF signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5948690U JPH0419046U (en) | 1990-06-05 | 1990-06-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5948690U JPH0419046U (en) | 1990-06-05 | 1990-06-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0419046U true JPH0419046U (en) | 1992-02-18 |
Family
ID=31586023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5948690U Pending JPH0419046U (en) | 1990-06-05 | 1990-06-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0419046U (en) |
-
1990
- 1990-06-05 JP JP5948690U patent/JPH0419046U/ja active Pending
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