JPH06141294A - Picture transmission system - Google Patents
Picture transmission systemInfo
- Publication number
- JPH06141294A JPH06141294A JP4310878A JP31087892A JPH06141294A JP H06141294 A JPH06141294 A JP H06141294A JP 4310878 A JP4310878 A JP 4310878A JP 31087892 A JP31087892 A JP 31087892A JP H06141294 A JPH06141294 A JP H06141294A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- picture
- sent
- transmission line
- memory
- 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
Landscapes
- Closed-Circuit Television Systems (AREA)
- Television Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、テレビジョン信号の伝
送方式に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television signal transmission system.
【０００２】[0002]
【従来の技術】複数の端末装置に、異種の画像を伝送す
る場合において、従来の技術は、ＴＶ信号をＡ／Ｄ変換
してデジタル信号にし、画像ＩＤ番号を付帯してデジタ
ル伝送する方式、ＴＶ信号をＦＭ変調し、周波数多重し
て伝送する方式、あるいはＴＶ信号の同期信号に制御信
号を重畳し伝送する方式であった。2. Description of the Related Art In the case of transmitting different kinds of images to a plurality of terminal devices, a conventional technique is a system of A / D converting a TV signal into a digital signal and digitally transmitting it with an image ID number. The system is a system in which a TV signal is FM-modulated and frequency-multiplexed and transmitted, or a system in which a control signal is superimposed on a sync signal of the TV signal and transmitted.
【０００３】[0003]
【発明が解決しようとする課題】映像信号をデジタル信
号で伝送する場合、伝送に時間がかかる欠点があり、ア
ナログ信号をＦＭ変調する場合、画質が劣化する欠点が
ある。また、映像信号に制御信号を重畳する場合、デジ
タル回線の伝送量に制限がある欠点があった。本発明は
これらの欠点を除去し、複数の端末装置に複数の画像を
画質の劣化なく、短時間で画像の属性データと共に伝送
することを目的とする。However, when a video signal is transmitted as a digital signal, it takes a long time to transmit, and when an analog signal is FM-modulated, the image quality is deteriorated. Further, when the control signal is superimposed on the video signal, there is a drawback that the transmission amount of the digital line is limited. It is an object of the present invention to eliminate these drawbacks and to transmit a plurality of images to a plurality of terminal devices in a short time together with attribute data of the images without deterioration of image quality.
【０００４】[0004]
【課題を解決するための手段および作用】本発明は、上
記の目的を達成するため、端末側に画像メモリと、デー
タデコーダ機能を有するメモリ制御器を配置し、アナロ
グ信号の伝送路とメモリ制御信号を伝送するデジタル信
号の伝送路との複合伝送路で画像を伝送するものであ
り、これによって複数の端末装置に複数の画像を画質の
劣化なく、短時間で画像の属性データと共に伝送するこ
とができる。In order to achieve the above object, the present invention has an image memory and a memory controller having a data decoder function on the terminal side, and an analog signal transmission path and memory control. Images are transmitted through a composite transmission path together with a digital signal transmission path for transmitting signals, which allows a plurality of images to be transmitted to a plurality of terminal devices together with image attribute data in a short time without deterioration in image quality. You can
【０００５】[0005]
【実施例】以下、本発明の一実施例を図１により説明す
る。１はＴＶ信号を発生するＴＶカメラ、２は伝送する
ＴＶ信号を選択するための映像切換器、３はＴＶ信号を
伝送するアナログ信号伝送路、４はＴＶ信号用モニタ、
５は画像メモリ、６はデジタル信号をデコードし、画像
メモリ５を制御する制御器、７はデジタル信号伝送路、
８は画像メモリ制御器６に制御データを伝送する信号発
生器である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 1 is a TV camera for generating a TV signal, 2 is a video switcher for selecting the TV signal to be transmitted, 3 is an analog signal transmission line for transmitting the TV signal, 4 is a monitor for the TV signal,
5 is an image memory, 6 is a controller for decoding the digital signal and controlling the image memory 5, 7 is a digital signal transmission line,
A signal generator 8 transmits control data to the image memory controller 6.
【０００６】以下、この動作を説明する。図１におい
て、例えばＴＶカメラ１1のＴＶ信号をＴＶモニタ４Aに
伝送する場合、映像切換器２でＴＶカメラ１1を選択
し、アナログ信号伝送路３にＴＶ信号を伝送する。この
とき、制御信号発生器８から、ＴＶモニタ４Aに接続さ
れている画像メモリ制御器６のＩＤ番号と画像メモリ５
への取込コマンドを付帯したデジタル信号を、デジタル
信号伝送路７に伝送する。そして、画像メモリ制御器６
は、自己のＩＤ番号と伝送されたＩＤ番号が一致したと
き、ＴＶモニタ４Aに接続されている画像メモリ５は、
アナログ信号伝送路３によって伝送されるＴＶ信号を取
込み、ＴＶモニタ４Aに再生する。以下、同様にして、
それぞれの端末装置においても、伝送されてくるＴＶ信
号から所望のＴＶ信号を取込み、再生することができ
る。This operation will be described below. In FIG. 1, for example, when transmitting the TV signal of the TV camera 1 1 to the TV monitor 4 A , the TV camera 1 1 is selected by the video switcher 2 and the TV signal is transmitted to the analog signal transmission path 3. At this time, from the control signal generator 8, the ID number of the image memory controller 6 connected to the TV monitor 4 A and the image memory 5
The digital signal accompanied by the take-in command is transmitted to the digital signal transmission line 7. The image memory controller 6
Is the image memory 5 connected to the TV monitor 4 A when its own ID number and the transmitted ID number match.
The TV signal transmitted by the analog signal transmission path 3 is taken in and reproduced on the TV monitor 4 A. In the same way,
Each terminal device can also take in and reproduce a desired TV signal from the transmitted TV signal.
【０００７】[0007]
【発明の効果】本発明によれば、複数の端末装置に複数
の画像を画質の劣化なく、短時間に伝送可能になる。According to the present invention, a plurality of images can be transmitted to a plurality of terminal devices in a short time without deterioration of image quality.
【図１】本発明の一実施例を示すブロック図。FIG. 1 is a block diagram showing an embodiment of the present invention.
１ ＴＶカメラ ２ 映像信号切換器 ３ アナログ信号伝送路 ４ ＴＶモニタ ５ 画像メモリ ６ メモリ制御器 ７ デジタル信号伝送路 ８ 制御信号発生器 1 TV camera 2 video signal switcher 3 analog signal transmission line 4 TV monitor 5 image memory 6 memory controller 7 digital signal transmission line 8 control signal generator
Claims (1)
機能を有するメモリ制御器を配置し、アナログ信号の伝
送路とメモリ制御信号を伝送するデジタル信号の伝送路
との複合伝送路で画像を伝送することを特徴とする画像
伝送方式。1. An image memory and a memory controller having a data decoder function are arranged on a terminal side, and an image is transmitted by a composite transmission line of an analog signal transmission line and a digital signal transmission line for transmitting a memory control signal. An image transmission method characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4310878A JPH06141294A (en) | 1992-10-26 | 1992-10-26 | Picture transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4310878A JPH06141294A (en) | 1992-10-26 | 1992-10-26 | Picture transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06141294A true JPH06141294A (en) | 1994-05-20 |
Family
ID=18010475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4310878A Pending JPH06141294A (en) | 1992-10-26 | 1992-10-26 | Picture transmission system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06141294A (en) |
-
1992
- 1992-10-26 JP JP4310878A patent/JPH06141294A/en active Pending
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