JPH01284084A - Ntsc video signal distribution transmitter - Google Patents
Ntsc video signal distribution transmitterInfo
- Publication number
- JPH01284084A JPH01284084A JP63112579A JP11257988A JPH01284084A JP H01284084 A JPH01284084 A JP H01284084A JP 63112579 A JP63112579 A JP 63112579A JP 11257988 A JP11257988 A JP 11257988A JP H01284084 A JPH01284084 A JP H01284084A
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- ntsc
- ntsc video
- transmission line
- outputted
- 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 claims abstract description 27
- 230000008054 signal transmission Effects 0.000 abstract description 12
- 101100364854 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) vtr-7 gene Proteins 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はＮＴＳＣ映像信号分配伝送装置に関し、特にＮ
ＴＳＣ映像信号送出装置に接続されるバス形式の伝送路
に複数のＮＴＳＣ映像信号受信装置を接続させ＆ＮＴＳ
Ｃ映像信号分配伝送装置に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an NTSC video signal distribution and transmission device, and in particular to an NTSC video signal distribution and transmission device.
Connect multiple NTSC video signal receiving devices to a bus-type transmission line connected to a TSC video signal transmitting device & NTS
This invention relates to a C video signal distribution and transmission device.
従来、ＮＴＳＣ映像信号の分配および伝送を行う場合は
、ＮＴＳＣ映像信号送出装置からスター形式の伝送路を
介して複数のＮＴＳＣ映像信号受信装置を接続するかあ
るいは、ＮＴＳＣ映像信号送出装置から出力されるＮＴ
ＳＣ映像信号の分岐および増幅送出を行う受信装置をシ
リーズ接続するという方法がとられていた。Conventionally, when distributing and transmitting NTSC video signals, a plurality of NTSC video signal receiving devices are connected from an NTSC video signal transmitting device via a star-type transmission path, or the NTSC video signal is output from an NTSC video signal transmitting device. N.T.
A method has been used in which receiving devices that branch, amplify and transmit SC video signals are connected in series.
前述した従来のＮＴＳＣ映像信号分配伝送装置は、ＮＴ
ＳＣ映像信号送出装置の回路規模が大きくなシ、しかも
伝送路となるケーブル量が多くなるという問題があった
。また、シリーズに接続されＡＮＴＳＣ映像信号の分岐
増幅装置が障害を起こした場合、他の正常な装置におけ
るＮＴＳＣ映像信号の受信が不可能となるなどの問題が
あった。The conventional NTSC video signal distribution and transmission device described above is
There is a problem in that the circuit scale of the SC video signal transmitting device is large and the amount of cables serving as a transmission path increases. Further, if a branch amplification device for ANTSC video signals connected in a series fails, there is a problem in that other normal devices cannot receive the NTSC video signal.
したがって本発明は前述した従来の問題に鑑みてなされ
たものであシ、その目的は、複数のＮＴＳＣ映像信号受
信装置へのＮＴＳＣ映像信号の分配および伝送を小規模
な装置で実現させたＮＴＳＣ映像信号分配伝送装置を提
供することにある。Therefore, the present invention has been made in view of the above-mentioned conventional problems, and its object is to realize distribution and transmission of NTSC video signals to a plurality of NTSC video signal receiving devices using a small-scale device. An object of the present invention is to provide a signal distribution transmission device.
本発明のＮＴＳＣ映像信号分配伝送装置は、１台のＮＴ
ＳＣ映像信号送出装置と複数のＮＴＳＣ映像信号受信装
置とをバス型状のＮＴＳＣ映像信号伝送路を用いてネッ
トワーク状に接続し次ものである。The NTSC video signal distribution and transmission device of the present invention includes one NTSC video signal distribution and transmission device.
An SC video signal sending device and a plurality of NTSC video signal receiving devices are connected in a network using a bus-shaped NTSC video signal transmission path.
本発明においては、ＮＴＳＣ映像信号伝送路を介して複
数個所へＮＴＳＣ映像信号が分配および伝送される。In the present invention, an NTSC video signal is distributed and transmitted to a plurality of locations via an NTSC video signal transmission path.
次に本発明について図面を参照して説明する０図は本発
明の一実施例によるＮＴＳＣ映像信号分配伝送装置のブ
ロック図である。同図において、ＮＴＳＣ映像信号送出
装置（以下親装置と称する）１に接続されるＮＴＳＣ映
像信号伝送路（以下ＮＴＳＣ伝送路と称する）２および
制御信号伝送路３には、ＮＴＳＣ映像信号受信装置（以
下端末装置と称する）４、端末装置５および終端器６が
接続される０また、親装置１にはＮＴＳＣ映像信号の情
報源としてのＶＴＲ７およびＮＴＳＣ映像信号の表示装
置であるデイスプレィ８が、端末装置４および端末装＃
ｔ５にはそれぞれＮＴＳＣ映像信号の表示を行うデイス
プレィ９およびデイスプレィ１０が接続される。なお、
終端器６はＮＴＳＣ伝送路２および制御信号伝送路３の
伝送路終端における線路インピーダンスマツチング用装
置である。−ｔｆｃ、ＶＴＲ７から出力されるＮＴＳＣ
映像信号は、親装置１のＮＴＳＣ人カバツカバッファ１
１され次後、デイスプレィ８に出力され表示されると共
にＮＴＳＣドライバ１２に入力される。Next, the present invention will be described with reference to the drawings. Figure 0 is a block diagram of an NTSC video signal distribution and transmission apparatus according to an embodiment of the present invention. In the figure, an NTSC video signal transmission line (hereinafter referred to as NTSC transmission line) 2 and a control signal transmission line 3 connected to an NTSC video signal transmission apparatus (hereinafter referred to as parent apparatus) 1 are connected to an NTSC video signal receiving apparatus (hereinafter referred to as parent apparatus). (hereinafter referred to as a terminal device) 4, a terminal device 5 and a terminator 6 are connected to the parent device 1, and a VTR 7 as an information source of the NTSC video signal and a display 8 as a display device of the NTSC video signal are connected to the terminal device 1. Device 4 and terminal #
A display 9 and a display 10 each displaying an NTSC video signal are connected to t5. In addition,
The terminator 6 is a device for line impedance matching at the end of the transmission line of the NTSC transmission line 2 and the control signal transmission line 3. -tfc, NTSC output from VTR7
The video signal is sent to the NTSC human cover buffer 1 of the parent device 1.
1 and then output to the display 8 for display and input to the NTSC driver 12.
ＮＴＳＣドライバ１２では入力されるＮＴＳＣ映像信号
をバランス型信号に変換した後、ＮＴＳＣ伝送路２に出
力する。端末装［４ではＮＴＳＣ伝送路２からＮＴＳＣ
映像信号をＮＴＳＣレシーバ１３で受信し、バランス型
信号をアンバランス型のＮＴＳＣ映像信号に変換した後
、ＮＴＳＣ出力バッファ１４を通し、デイスプレィ９に
出力する。The NTSC driver 12 converts the input NTSC video signal into a balanced signal and then outputs it to the NTSC transmission line 2. Terminal equipment [In 4, NTSC transmission line 2 to NTSC
The video signal is received by the NTSC receiver 13, the balanced signal is converted into an unbalanced NTSC video signal, and then outputted to the display 9 through the NTSC output buffer 14.
また、表示制御部１５から出力されるコントロール信号
によ！５ＮＴＳＣ出力バツファ１４ではデイスプレィ９
へのＮＴ Ｓ Ｃ映像信号の出力のオン。Also, depending on the control signal output from the display control section 15! 5NTSC output buffer 14 displays 9
Turns on the output of the NTSC video signal.
オフを行う。なお、表示制御部１５が出力するコントロ
ール信号は、観装［１の入力操作部１６の操作により、
制御信号生成部１７．制御信号送信部１Ｂおよび制御信
号伝送路３を通して制御される〇
一方、ＮＴＳＣ伝送路２に接続される端末装置５におい
ても前述の端末装置４と同様にＶＴＲ７から出力される
映像をデイスプレィ１０に表示することができる。Do off. Note that the control signal output by the display control unit 15 is controlled by the operation of the input operation unit 16 of the display [1].
Control signal generation section 17. Controlled through the control signal transmitter 1B and the control signal transmission path 3 On the other hand, the terminal device 5 connected to the NTSC transmission path 2 also transmits the video output from the VTR 7 to the display 10 in the same way as the terminal device 4 described above. can be displayed.
なお、前述した実施例では、端末装置を２台としたが、
親装置１におけるＮＴＳＣドライバの出力インピーダン
スに対して端末装置におけるＮＴＳＣレシーバの入力イ
ンピーダンスを十分高い値に設定することによって一伝
送路に接続できる端末装置の台数を増加させることが可
能であることはいうまでもない。In addition, in the above-mentioned embodiment, there are two terminal devices, but
It is possible to increase the number of terminal devices that can be connected to one transmission path by setting the input impedance of the NTSC receiver in the terminal device to a value sufficiently higher than the output impedance of the NTSC driver in the parent device 1. Not even.
以上説明し次ように本発明は、ＮＴＳＣ映像信号送出装
置にバス形式のＮＴＳＣ映像信号伝送路を介してＮＴＳ
Ｃ映像信号受信装置を接続することによシ、複数箇所へ
のＮＴＳＣ映像信号の分配および伝送を小規模な装置で
実現することができると共にＮＴＳＣ映像信号受信装置
の障害時においても他のＮＴＳＣ映像信号受信装置に与
える影響を最小限におさえることが可能となるなどの極
めて優れた効果が得られる０As explained above and as follows, the present invention provides an NTSC video signal transmission device that transmits an NTSC video signal through a bus-type NTSC video signal transmission line.
By connecting a C video signal receiving device, distribution and transmission of NTSC video signals to multiple locations can be realized with a small device, and even in the event of a failure of the NTSC video signal receiving device, other NTSC video signals can be transmitted. Extremely excellent effects such as minimizing the influence on signal receiving equipment can be obtained.
図は本発明の一実施例によるＮＴＳＣ映像信号分配伝送
装置のブロック図である０
１−・・・ＮＴＳＣ映像信号送出装置、２拳Φ・・ＮＴ
ＳＣ映像信号伝送路、３・・・・制御信号伝送路、４・
−・・ＮＴＳＣ映像信号受信装置、５Φ・・・ＮＴＳＣ
映像信号受信装置、６・・φΦ終端器、７−−−−ＶＴ
Ｒ，８，９，１０−−・ｅデイスプレィ、１１・拳・・
ＮＴＳＣ人カバツファ、１２拳・・・ＮＴＳＣドライバ
、１３・・・・ＮＴＳＣレシーバ、１４会−・・ＮＴＳ
Ｃ出力バツファ、１５・・・・表示制御部、１６・・・
・入力操作部、１７・・Φ・制御信号生成部、１８・・
・・制御信号送信部、１９・・・・ＮＴＳＣレシーバ、
２０・・・・ＮＴＳＣ出力バッ７ア、２１・・・・表示
制御部。The figure is a block diagram of an NTSC video signal distribution and transmission device according to an embodiment of the present invention.
SC video signal transmission line, 3... control signal transmission line, 4...
-...NTSC video signal receiving device, 5Φ...NTSC
Video signal receiving device, 6...φΦ terminator, 7---VT
R, 8, 9, 10--e display, 11 fist...
NTSC human cover, 12 fists...NTSC driver, 13...NTSC receiver, 14th meeting...NTS
C output buffer, 15...display control section, 16...
・Input operation section, 17...Φ・Control signal generation section, 18...
...Control signal transmitter, 19...NTSC receiver,
20...NTSC output buffer, 21...Display control section.
Claims (1)
信号受信装置とをバス形式の伝送路により接続したこと
を特徴とするＮＴＳＣ映像信号分配伝送装置。1. An NTSC video signal distribution and transmission device, characterized in that one NTSC video signal transmitting device and a plurality of NTSC video signal receiving devices are connected through a bus-type transmission path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63112579A JPH01284084A (en) | 1988-05-11 | 1988-05-11 | Ntsc video signal distribution transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63112579A JPH01284084A (en) | 1988-05-11 | 1988-05-11 | Ntsc video signal distribution transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01284084A true JPH01284084A (en) | 1989-11-15 |
Family
ID=14590256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63112579A Pending JPH01284084A (en) | 1988-05-11 | 1988-05-11 | Ntsc video signal distribution transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01284084A (en) |
-
1988
- 1988-05-11 JP JP63112579A patent/JPH01284084A/en active Pending
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