JPH04248792A - Subscriber video transmission system - Google Patents
Subscriber video transmission systemInfo
- Publication number
- JPH04248792A JPH04248792A JP3014305A JP1430591A JPH04248792A JP H04248792 A JPH04248792 A JP H04248792A JP 3014305 A JP3014305 A JP 3014305A JP 1430591 A JP1430591 A JP 1430591A JP H04248792 A JPH04248792 A JP H04248792A
- Authority
- JP
- Japan
- Prior art keywords
- video
- rec
- signal
- subscriber
- inh
- 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
- 230000005540 biological transmission Effects 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
Landscapes
- Television Receiver Circuits (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明は、映像伝送システムに関
し、特に、加入者宅内に設置された機器の入力電源断時
に発出されるREC INH(入力断アラームインヒ
ビット)信号の転送方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video transmission system, and more particularly to a method for transmitting a REC INH (input disconnection alarm inhibit) signal that is issued when input power to equipment installed in a subscriber's premises is interrupted.
【0002】0002
【従来の技術】従来、加入者映像伝送システムではRE
C INH信号を転送する方式を採用した例は知られ
ていない。[Prior Art] Conventionally, in subscriber video transmission systems, RE
There is no known example in which a method of transferring the CINH signal is adopted.
【0003】0003
【発明が解決しようとする課題】叙上の如く、従来、加
入者映像伝送システムにおいてはREC INH信号
を転送する方式が採用されていないので、受信点にて映
像信号が到達していない時に、それが宅内装置の入力電
源断によるものか、あるいは障害によるものかの判断が
できなかった。[Problems to be Solved by the Invention] As mentioned above, conventional subscriber video transmission systems have not adopted a method of transferring the REC INH signal, so when the video signal has not arrived at the receiving point, It was not possible to determine whether this was due to a power outage to the in-house equipment or a failure.
【0004】本発明は従来の上記実情に鑑みてなされた
ものであり、従って本発明の目的は、従来の技術に内在
する上記課題を解決することを可能とした新規な加入者
映像伝送システムを提供することにある。The present invention has been made in view of the above-mentioned conventional circumstances, and therefore, an object of the present invention is to provide a new subscriber video transmission system that makes it possible to solve the above-mentioned problems inherent in the conventional technology. It is about providing.
【0005】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る加入者映像伝送システムは、宅内映像
送信装置の入力電源断時に送出するREC INH信
号を、局内装置で受信した後に次段装置へ転送し、最終
的に宅内映像受信装置まで転送することを特徴としてい
る。[Means for Solving the Problems] In order to achieve the above object, the subscriber video transmission system according to the present invention transmits the REC INH signal, which is sent out when the input power of the home video transmitting device is cut off, after receiving the REC INH signal in the home video transmitting device. It is characterized by being transferred to the next stage device and finally to the home video receiving device.
【0006】[0006]
【実施例】次に、本発明をその好ましい一実施例につい
て図面を参照して具体的に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be specifically explained with reference to the drawings.
【0007】図1は本発明に係る加入者映像伝送システ
ムの一実施例を示すブロック構成図である。FIG. 1 is a block diagram showing an embodiment of a subscriber video transmission system according to the present invention.
【0008】図1を参照するに、本発明に係る加入者映
像伝送システムの一実施例は、宅内映像送信装置11、
局内終端受信装置12、局内終端送信装置13、宅内映
像受信装置14から構成されている。Referring to FIG. 1, an embodiment of the subscriber video transmission system according to the present invention includes an in-home video transmission device 11,
It is composed of an in-office terminal receiving device 12, an in-office terminal transmitting device 13, and an in-house video receiving device 14.
【0009】映像信号の流れとしては、まず、カメラか
らの映像信号は、宅内映像送信装置11を通り、光ディ
ジタル信号として伝送され、局内終端受信装置12で受
けた後に、バイポーラの電気信号として中継系に接続さ
れる。その後、中継系を通ってきた信号は、局内終端送
信装置13を通して光ディジタル信号に変換され、さら
に宅内映像受信装置14で映像信号に戻され、モニタに
接続される。As for the flow of the video signal, first, the video signal from the camera passes through the in-home video transmitter 11, is transmitted as an optical digital signal, is received by the in-office terminal receiver 12, and is then relayed as a bipolar electrical signal. connected to the system. Thereafter, the signal that has passed through the relay system is converted into an optical digital signal through an in-office terminal transmitter 13, and then converted back into a video signal by an in-house video receiver 14 and connected to a monitor.
【0010】一方、REC INH信号は、宅内映像
送信装置11において、入力電源断になると、光ディジ
タル信号の中の特定のビットに挿入され、局内終端受信
装置12に転送される。局内終端受信装置12では、R
EC INH信号を受信したと判断すると、保持する
と共に次段の局内終端送信装置13に転送する。局内終
端送信装置13では、局内終端受信装置12の場合と同
じように、REC INH信号を受信したと判断する
と保持すると共に次段の宅内映像受信装置14に転送す
る。宅内映像受信装置14では、REC INH信号
を受信したと判断すると、REC INH信号を保持
し、発出する。そして、宅内映像送信装置11において
入力電源を“ON”にすると、REC INH信号は
断となり、それに伴って、局内終端受信装置12、局内
終端送信装置13、宅内映像受信装置14では、REC
INHが解除されることとなる。On the other hand, when the input power is cut off in the home video transmitting device 11, the REC INH signal is inserted into a specific bit of the optical digital signal and transferred to the local terminal receiving device 12. In the local terminal receiving device 12, R
When it is determined that the EC INH signal has been received, it is held and transferred to the next-stage intra-office termination transmitter 13. In the same way as in the case of the intra-office terminal receiving apparatus 12, when the intra-office terminal transmitting apparatus 13 determines that it has received the REC INH signal, it holds it and transfers it to the next-stage indoor video receiving apparatus 14. When the home video receiving device 14 determines that it has received the REC INH signal, it holds and issues the REC INH signal. Then, when the input power is turned ON in the home video transmitting device 11, the REC INH signal is disconnected, and accordingly, the REC INH signal is turned off in the home end receiving device 12, the home end transmitting device 13, and the home video receiving device 14.
INH will be canceled.
【0011】[0011]
【発明の効果】以上説明したように、本発明によれば、
宅内装置の入力電源断時に送出するREC INH信
号を、最終的に宅内映像受信装置まで転送するので、受
信点にて映像信号が到達していない時に、それが宅内装
置の入力電源断によるものなのかどうかがすぐにわかる
という効果が得られる。[Effects of the Invention] As explained above, according to the present invention,
The REC INH signal sent when the input power to the home device is turned off is ultimately transferred to the home video receiving device, so if the video signal does not arrive at the receiving point, it is possible to confirm that it is not due to the input power being cut off to the home device. The effect is that you can immediately know whether the
【図1】本発明の一実施例を示すブロック構成図である
。FIG. 1 is a block configuration diagram showing one embodiment of the present invention.
11…宅内映像送信装置 12…局内終端受信装置 13…局内終端送信装置 14…宅内映像受信装置 11...In-home video transmission device 12...Internal terminal receiving device 13... In-office terminal transmitter 14...In-house video receiving device
Claims (1)
像受信装置とから構成される加入者映像伝送システムに
おいて、前記宅内映像送信装置の入力電源断時に送出す
るREC INH信号を、前記局内装置で受信した後
に次段装置へ転送していき、最終的に前記宅内映像受信
装置まで転送することを特徴とする加入者映像伝送シス
テム。Claim 1: In a subscriber video transmission system comprising an in-home video transmitting device, an in-office device, and an in-home video receiving device, the in-office device transmits a REC INH signal transmitted when the input power of the in-home video transmitting device is cut off. A subscriber video transmission system characterized in that after receiving the video, the video is transferred to the next device and finally to the home video receiving device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3014305A JPH04248792A (en) | 1991-02-05 | 1991-02-05 | Subscriber video transmission system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3014305A JPH04248792A (en) | 1991-02-05 | 1991-02-05 | Subscriber video transmission system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04248792A true JPH04248792A (en) | 1992-09-04 |
Family
ID=11857392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3014305A Pending JPH04248792A (en) | 1991-02-05 | 1991-02-05 | Subscriber video transmission system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04248792A (en) |
-
1991
- 1991-02-05 JP JP3014305A patent/JPH04248792A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Yamamoto et al. | A Home Terminal System Using the Home Area Information Network | |
US4076961A (en) | Automatic switching unit for data communications network | |
JP2002543631A (en) | Local area network of serial intelligent cells | |
US5369691A (en) | Telephonic information communication method and apparatus | |
EP1177682B1 (en) | A status monitoring and data processing system suitable for use in a bi-directional communication device | |
GB2105133A (en) | Electrical-optical interface network | |
US5357505A (en) | Device for bidirectional communication on a telephone line | |
US20020175991A1 (en) | GPI trigger over TCP/IP for video acquisition | |
JPH04248792A (en) | Subscriber video transmission system | |
JP3354620B2 (en) | AV network | |
JPS60149242A (en) | Information transmitting system | |
JPS6172460A (en) | Data transfer equipment | |
US4620187A (en) | Transformer coupled, solid state communications line switch | |
JP3162196B2 (en) | Broadcast connection method | |
JPH079467Y2 (en) | Optical adapter | |
JP2565956B2 (en) | Network controller | |
JPS62141829A (en) | Bidirectional wire broadcasting system | |
JPH05122700A (en) | Catv monitoring system | |
JPS5972853A (en) | Facsimile exchange system | |
JPH0244178B2 (en) | ||
JPS61192143A (en) | Data communication system | |
JPS6256050A (en) | Data line terminator | |
GB2253976A (en) | Method and system for transferring supervisory right requierment in submarine cable communication network system | |
JPH0714160B2 (en) | Remote monitoring controller | |
JPH03274940A (en) | Network terminal equipment |