JPS6115869U - In-home connection device - Google Patents
In-home connection deviceInfo
- Publication number
- JPS6115869U JPS6115869U JP9697384U JP9697384U JPS6115869U JP S6115869 U JPS6115869 U JP S6115869U JP 9697384 U JP9697384 U JP 9697384U JP 9697384 U JP9697384 U JP 9697384U JP S6115869 U JPS6115869 U JP S6115869U
- Authority
- JP
- Japan
- Prior art keywords
- specific single
- circuit
- single frequency
- signal
- telephone line
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例による宅内接続装置のブロッ
ク回路図、第２図は第１図のフィルタ回路のフィルタ特
性図、および第３図は第１図のコンパレニタ回路の特性
図である。
ｌａ，ｌｂ・・・・・・アナログ式電話回線、２ａ，２
ハ・・・・・・スイッチ、３ａｔ ３ｂ・・・・・・
ラ，イン、４ａ，４ｂ・・・・・・ライン、７・・・・
・・第１フィルタ回路（ＢＰＦ）、８・・・・・・第２
フィルタ回路（ＢＥＦ）、９・・・・・・第１コンパレ
ータ回路、１０・・・・・・第２コンパレータ回路、１
１・・・・・・アンドゲート、１２・・・・・・インバ
ータ、１３・・・・・・リレー駆動回路、１４・・・・
・・リレーＯFIG. 1 is a block circuit diagram of an in-home connection device according to an embodiment of the present invention, FIG. 2 is a filter characteristic diagram of the filter circuit of FIG. 1, and FIG. 3 is a characteristic diagram of the comparator circuit of FIG. 1. . la, lb...analog telephone line, 2a, 2
C...Switch, 3at 3b...
La, in, 4a, 4b...line, 7...
...First filter circuit (BPF), 8...Second
Filter circuit (BEF), 9...First comparator circuit, 10...Second comparator circuit, 1
1...AND gate, 12...Inverter, 13...Relay drive circuit, 14...
・Relay O
Claims (1)
一方を選択的に接続するよう切替可能なスイッチを備え
、前記電話回線を介しそ送られてくる特定単一周波数の
切換指示信号を識別して前記スイッチを前記端末装置側
へ切り換える宅内接続装置において、 前記電話回線上の信号を受け取り、前記特定単一周波数
付近の周波数成分を通過させる第１のフィルタ回路と、 前記第１のフィルタ回路の出力電圧を所定のしきい値電
圧と比較して第１レベル電圧または第２レベル電圧のい
ずれかを出力する第１のコンパレータ回路と、 前記電話回線上の信号を受け取り、前記特定単一周波数
付近の周波数成分を除去する第２のフィルタ回路と、 前記第２のフイ．ルタ′回路の出力電圧を所定のしきい
値電圧と比較して第１レベル電圧または第２レベル電圧
のいずれかを出力する第２のコンパレータ回路と、 前記第１および第２コンバレータ回路の出力電圧を論理
的に結合し、前記特定単一周波数に対する特定の論理的
組合せが得られたときに切換作動信号を発生する論理回
路と、 前記切換作動信号に応答して前記スイッチを前記端末装
置側へ切り換える手段と、 を具備することを特徴とする宅内接続装置。[Claims for Utility Model Registration] A switch capable of selectively connecting either a telephone set or a terminal device to an analog telephone line is provided, and a specific single frequency signal transmitted through the telephone line is provided. A home connection device that identifies a switching instruction signal and switches the switch to the terminal device side, comprising: a first filter circuit that receives a signal on the telephone line and passes a frequency component near the specific single frequency; a first comparator circuit that compares the output voltage of the first filter circuit with a predetermined threshold voltage and outputs either a first level voltage or a second level voltage; and receives a signal on the telephone line; a second filter circuit that removes frequency components near the specific single frequency; and a second filter circuit that removes frequency components near the specific single frequency. a second comparator circuit that compares the output voltage of the router' circuit with a predetermined threshold voltage and outputs either a first level voltage or a second level voltage; and an output voltage of the first and second comparator circuits. a logic circuit that logically combines the above and generates a switching activation signal when a specific logical combination for the specific single frequency is obtained, and moving the switch to the terminal device side in response to the switching activation signal. An in-home connection device characterized by comprising a means for switching, and the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9697384U JPS6115869U (en) | 1984-06-29 | 1984-06-29 | In-home connection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9697384U JPS6115869U (en) | 1984-06-29 | 1984-06-29 | In-home connection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6115869U true JPS6115869U (en) | 1986-01-29 |
Family
ID=30656499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9697384U Pending JPS6115869U (en) | 1984-06-29 | 1984-06-29 | In-home connection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6115869U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50105213A (en) * | 1974-01-24 | 1975-08-19 | ||
| JPS5344109A (en) * | 1976-10-02 | 1978-04-20 | Nippon Telegr & Teleph Corp <Ntt> | Signal receiver |
| JPS595767A (en) * | 1982-07-01 | 1984-01-12 | Nippon Telegr & Teleph Corp <Ntt> | Tone detection type connection switching system |
-
1984
- 1984-06-29 JP JP9697384U patent/JPS6115869U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50105213A (en) * | 1974-01-24 | 1975-08-19 | ||
| JPS5344109A (en) * | 1976-10-02 | 1978-04-20 | Nippon Telegr & Teleph Corp <Ntt> | Signal receiver |
| JPS595767A (en) * | 1982-07-01 | 1984-01-12 | Nippon Telegr & Teleph Corp <Ntt> | Tone detection type connection switching system |
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