JPH0380655A - Digital picture exchange system - Google Patents
Digital picture exchange systemInfo
- Publication number
- JPH0380655A JPH0380655A JP1217927A JP21792789A JPH0380655A JP H0380655 A JPH0380655 A JP H0380655A JP 1217927 A JP1217927 A JP 1217927A JP 21792789 A JP21792789 A JP 21792789A JP H0380655 A JPH0380655 A JP H0380655A
- Authority
- JP
- Japan
- Prior art keywords
- digital
- image signal
- picture
- signal
- subscriber
- 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
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 238000010586 diagram Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Monitoring And Testing Of Exchanges (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はディジタル画像交換システムに関し、特に加入
者端末間の動画像信号を処理するディジタル画像交換シ
ステムに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a digital image exchange system, and more particularly to a digital image exchange system that processes moving image signals between subscriber terminals.
従来のディジタル画像交換システムは、交換機内部に特
定のフレーム（例えば３２Ｍビットのディジタル信号）
を発生するディジタル信号発生器を持ち、加入者回線に
特定のフレームを送出していた。A conventional digital image exchange system stores a specific frame (for example, a 32 Mbit digital signal) inside the exchange.
It had a digital signal generator that generated a specific frame and sent it to the subscriber line.
上述した従来の画像交換システムにおいて、加入者端末
の符号化復号化装置では特定フレームがディジタル画像
信号と一致していないため画像信号として検出できずＴ
Ｖ受像機への信号回線を断にしていた。″この様な構成
の場合には端末装置の電源を入れても画像信号を得るこ
とができず伝送路が異常なのか画像交換機が異常なのか
を端末装置側で判断することができないという欠点があ
った。In the conventional image exchange system described above, the encoding/decoding device of the subscriber terminal cannot detect the specific frame as an image signal because it does not match the digital image signal.
The signal line to the V receiver had been cut off. ``With this kind of configuration, even if the power to the terminal device is turned on, an image signal cannot be obtained, and the terminal device cannot determine whether there is an abnormality in the transmission line or the image exchanger. there were.
本発明の画像交換システムは、回線試験に使用するアナ
ログ画像信号を発生する画像信号発生器と、前記アナロ
グ画像信号をディジモ小雨増信号に変換し出力する画像
符号化器と、前記ディジタル画像信号をディジタル交換
機が収容する加入者回線に送出する制御器とを有してい
る。The image exchange system of the present invention includes an image signal generator that generates an analog image signal used for line testing, an image encoder that converts the analog image signal into a digital signal and outputs it, and a digital image signal generator that converts the analog image signal into a digital signal. It has a controller for sending data to subscriber lines accommodated by the digital exchange.
次に、本発明について図面を参照して説明する。第１図
は本発明の一実施例のブロック図である。Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram of one embodiment of the present invention.
本実施例は、回線試験に使用するアナログ画像信号２ａ
を発生する画像信号発生器２と、アナログ画像信号２ａ
をディジタル画像信号３ａに変換し出力する画像符号化
器３と、ディジタル画像信号３ａをディジタル交換機１
が収容する加入者回線５に送出する制御器４とを有して
構成する。また、上記実施例において、ディジタル交換
機１が収容する空きの加入者回線５にディジタル画像信
号３ａを送出する制御器４を有して構成することもでき
る。In this embodiment, the analog image signal 2a used for line testing is
an image signal generator 2 that generates an analog image signal 2a;
An image encoder 3 that converts the image into a digital image signal 3a and outputs it, and a digital exchanger 1 that converts the digital image signal 3a into a digital image signal 3a.
The controller 4 transmits data to the subscriber line 5 accommodated by the subscriber line 5. Further, in the embodiment described above, the controller 4 may be provided to send the digital image signal 3a to the vacant subscriber line 5 accommodated by the digital exchange 1.
このようにすると、画像信号発生器２は常時任意の試験
用のテストパターンの画像信号を発生し画像符号化器４
でディジタル信号に変換される。In this way, the image signal generator 2 always generates an image signal of a test pattern for an arbitrary test, and the image encoder 4
is converted into a digital signal.
一方制御器４ではディジタル交換機１の加入者回線５毎
の使用状態を常時チエツクし空きが生じた場合には加入
者回線５に画像符号化器３からの出力を送出し、加入者
端末６において、符号化復号化装置７が復号した画像信
号をＴＶ受像機８に出力することができる。On the other hand, the controller 4 constantly checks the usage status of each subscriber line 5 of the digital exchange 1, and when a free line occurs, sends the output from the image encoder 3 to the subscriber line 5, and sends the output from the image encoder 3 to the subscriber line 5. , the image signal decoded by the encoding/decoding device 7 can be output to the TV receiver 8.
以上説明したように本発明は、ディジタル画像交換機に
収容の加入者回線に試験用の画像信号を送出することに
より、加入者端末のＴＶ受像機で画像信号を監視するこ
とができ加入者端末と画像交換機間の回線状態の良否を
常時チエツクすることができる。As explained above, the present invention enables the TV receiver of the subscriber terminal to monitor the image signal by sending the test image signal to the subscriber line housed in the digital image exchanger. It is possible to constantly check whether the line status between image exchangers is good or bad.
第１図は本発明の一実施例のブロック図である。 １・・・デイ ジタル画像交換機、 ２・・・画像信号発生 器、 ３・・・画像符号化器、 ４・・・制御器、 ５・・・加入者 端末。 FIG. 1 is a block diagram of one embodiment of the present invention. 1...day digital image exchanger, 2... Image signal generation vessel, 3... Image encoder, 4...controller, 5...Subscriber terminal.
Claims (2)
画像信号発生器と、前記アナログ画像信号をディジタル
画増信号に変換し出力する画像符号化器と、前記ディジ
タル画像信号を、ディジタル交換機が収容する加入者回
線に送出する制御器とを有することを特徴とするディジ
タル画像交換システム。(1) A digital exchange accommodates an image signal generator that generates an analog image signal used for line testing, an image encoder that converts the analog image signal into a digital image signal and outputs it, and the digital image signal. 1. A digital image exchange system comprising: a controller for transmitting data to a subscriber line;
前記ディジタル画像信号を送出する手段とを有すること
を特徴とする請求項（１）記載のディジタル交換システ
ム。2. The digital switching system according to claim 1, further comprising: (2) means for sending the digital image signal to a vacant subscriber line accommodated by the digital switching equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1217927A JPH0380655A (en) | 1989-08-23 | 1989-08-23 | Digital picture exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1217927A JPH0380655A (en) | 1989-08-23 | 1989-08-23 | Digital picture exchange system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0380655A true JPH0380655A (en) | 1991-04-05 |
Family
ID=16711906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1217927A Pending JPH0380655A (en) | 1989-08-23 | 1989-08-23 | Digital picture exchange system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0380655A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8234945B2 (en) | 2006-09-29 | 2012-08-07 | Honda Motor Co., Ltd. | Transmission |
-
1989
- 1989-08-23 JP JP1217927A patent/JPH0380655A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8234945B2 (en) | 2006-09-29 | 2012-08-07 | Honda Motor Co., Ltd. | Transmission |
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