JPH0478855U - - Google Patents
Info
- Publication number
- JPH0478855U JPH0478855U JP12341490U JP12341490U JPH0478855U JP H0478855 U JPH0478855 U JP H0478855U JP 12341490 U JP12341490 U JP 12341490U JP 12341490 U JP12341490 U JP 12341490U JP H0478855 U JPH0478855 U JP H0478855U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- band pass
- output section
- pass filters
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Bidirectional Digital Transmission (AREA)
Description
第１図は本考案の一実施例を示すブロツク構成
図、第２図は、従来の装置を示すブロツク構成図
である。
図において、１は外部インタフエス、２は網制
御装置、３は変調回路、４は腹調回路、５はキヤ
リア検出回路、６は回線インタフエス、７は高群
バンドパスフイルタ、８は低群バンドパスフイル
タ、９は切り替え回路、１０は切り替え回路、１
１はデータ端末装置、１２は電話機である。なお
、図中、同一符号は同一、または相当部分を示す
。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional device. In the figure, 1 is an external interface, 2 is a network control device, 3 is a modulation circuit, 4 is a tone circuit, 5 is a carrier detection circuit, 6 is a line interface, 7 is a high group bandpass filter, and 8 is a low group bandpass Filter, 9 is a switching circuit, 10 is a switching circuit, 1
1 is a data terminal device, and 12 is a telephone. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
制御装置を介して接続された発信部と分周回路を
もつ変調回路、復調回路、及びキヤリア検出回路
、また回線との入出力部である回線インタフエス
、そしてこれらの間に切り替え回路を介して各々
２つ以上の高群バンドパスフイルタ、低群バンド
パスフイルタが接続されていることを特徴とする
多重伝送音声帯域モデム。 A modulation circuit, a demodulation circuit, and a carrier detection circuit having a transmitting section and a frequency dividing circuit are connected from an external interface, which is a data input/output section, through a network control device, and a line interface, which is an input/output section with a line; A multiple transmission voice band modem characterized in that two or more high group band pass filters and two or more low group band pass filters are connected between these filters via a switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12341490U JPH0478855U (en) | 1990-11-21 | 1990-11-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12341490U JPH0478855U (en) | 1990-11-21 | 1990-11-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0478855U true JPH0478855U (en) | 1992-07-09 |
Family
ID=31871124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12341490U Pending JPH0478855U (en) | 1990-11-21 | 1990-11-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0478855U (en) |
-
1990
- 1990-11-21 JP JP12341490U patent/JPH0478855U/ja active Pending
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