JPH0213031A - Catv branching and distributing device - Google Patents
Catv branching and distributing deviceInfo
- Publication number
- JPH0213031A JPH0213031A JP63160580A JP16058088A JPH0213031A JP H0213031 A JPH0213031 A JP H0213031A JP 63160580 A JP63160580 A JP 63160580A JP 16058088 A JP16058088 A JP 16058088A JP H0213031 A JPH0213031 A JP H0213031A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- branching
- transmission
- catv
- antenna
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000011144 upstream manufacturing 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、ＣＡＴＶでのサービス範囲拡張ができ伝送路
障害対策を施すことができるＣＡＴＶＡＴＶ分岐装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a CATV ATV branching device that can extend the range of CATV services and take measures against transmission line failures.
従来のＣＡＴＶサービスは、有線（同軸、光）による伝
送路で接続されているセンター→加入者端末又は加入者
端末→加入者端末に限られていた。Conventional CATV services have been limited to a center → subscriber terminal or subscriber terminal → subscriber terminal connected by a wired (coaxial, optical) transmission path.
第１図は従来のＣＡＴＶシステムの概念を示す。同図に
おいて、１はヘッドエンド装置、２は幹線増幅器、３は
幹線分岐増幅器、４は延長増幅器、５は分岐・分配器（
タップオフ）、６はＣΔＴＶ加入者宅（加入者端末）で
ある。FIG. 1 shows the concept of a conventional CATV system. In the figure, 1 is a head-end device, 2 is a trunk amplifier, 3 is a trunk branch amplifier, 4 is an extension amplifier, and 5 is a branch/distributor (
tap-off), 6 is a CΔTV subscriber's home (subscriber terminal).
第２図は従来の分岐・分配装置を示す。同図において７
は入力端子、８は分岐器、９は分配器、ｌＯは分岐端子
、１１は出力端子である。FIG. 2 shows a conventional branching and distributing device. In the same figure, 7
is an input terminal, 8 is a brancher, 9 is a distributor, IO is a branch terminal, and 11 is an output terminal.
しかしながら従来のＣＡＴＶシステムでは、有線の伝送
路である事から、伝送路に障害か発生した場合、加入者
へのサービスが不可能となり障害時のバックアップは出
来なかった。However, since the conventional CATV system uses a wired transmission line, if a failure occurs in the transmission line, it becomes impossible to provide services to subscribers, and backup in the event of a failure is not possible.
また従来のＣＡＴＶ設備では、サービス拡張に伴ない施
設工事作業か必要となり、非常及び臨時のサービスにつ
いて対応が出来ない。Furthermore, conventional CATV equipment requires facility construction work in conjunction with service expansion, and cannot support emergency and temporary services.
さらに、工事に際しても、場所的、距ｆｔ１ｔ的な問題
があり、特に移動サービスでは、大きな問題であった。Furthermore, there are also problems with location and distance during construction, which is a big problem especially in mobile services.
そこで本発明の目的は以上のような問題を解消したＣＡ
ＴＶ分岐・分配装置を提供することにある。Therefore, the purpose of the present invention is to provide a CA that solves the above problems.
Our objective is to provide a TV branching/distributing device.
（課題を解決するための手段〕
本発明は、分岐分配器に無線送受信機能を有する手段を
設けたことを特徴とするものである。(Means for Solving the Problems) The present invention is characterized in that the branching/distributing device is provided with means having a wireless transmission/reception function.
（作 用）
本発明によれば、センタからの信号を無線で送信、及び
加入者宅端末又は、外部他サービス端末からの力ｊ（線
信号を受イエし、センタへ送信する。(Function) According to the present invention, a signal from the center is transmitted wirelessly, and a signal is received from a subscriber's home terminal or an external service terminal and transmitted to the center.
〔実施例］
第３図は本発明の実施例を示す。同図において、７は入
力端子、８は分岐器、９は分配器、ｌＯは分岐端子、１
１は出力端子、１２は上り下り信号分離フィルタ、１３
は送信機、１４は受信機、１５はアンテナ共有器、１６
は送受信アンテナである。[Example] FIG. 3 shows an example of the present invention. In the figure, 7 is an input terminal, 8 is a brancher, 9 is a distributor, IO is a branch terminal, 1
1 is an output terminal, 12 is an up/down signal separation filter, 13
is a transmitter, 14 is a receiver, 15 is an antenna sharer, 16
is the transmitting and receiving antenna.
以上のような構成によれば、
１）センタからの（ｇ号は、入力端子７を通じ、分岐器
８により無線装置側に分岐される。分岐された信号は、
上り下り信号分離フィルタ１２により制限を受け、つい
で送信機１３に入力される。According to the above configuration, 1) The signal (g) from the center passes through the input terminal 7 and is branched to the wireless device side by the branch 8.The branched signal is
The signal is restricted by an upstream/downstream signal separation filter 12 and then input to a transmitter 13.
そして、送信機１３の内部で、必要に応し、変調及び適
当な無線周波数に変換され、アンテナ共有器１５を通じ
て送受信アンテナ１６より送信される。Then, inside the transmitter 13, the signal is modulated and converted to an appropriate radio frequency as necessary, and is transmitted from the transmitting/receiving antenna 16 via the antenna sharing device 15.
２、）一方、外部からの信号は、送受信アンテナ１６で
受信され、アンテナ具有器１５を通じ、受信機１４に人
力され、受信機１４の内部で上り伝送帯域及び、下り伝
送帯域に適当な周波数に変換され、分岐器８により合成
し、ＣＡＴＶ伝送路に送られる。2.) On the other hand, signals from the outside are received by the transmitting/receiving antenna 16, sent to the receiver 14 through the antenna equipment 15, and converted to a frequency appropriate for the uplink transmission band and the downlink transmission band inside the receiver 14. The signals are converted, combined by a splitter 8, and sent to the CATV transmission line.
１）以上説明した様に本発明は、ＣＡＴＶの同軸ケーブ
ル及び光フアイバケーブルて結ばれる閉じた伝送路内で
しか出来なかフたす、−ビス範囲を拡大することができ
る。すなわち、無線方式を付加することにより、完全に
オーブンな伝送路が得られるため、地域的条件を選ぶこ
となく広域かつ多種、多様の地域サービスを行う事が可
能である。1) As explained above, the present invention can expand the range of -vises that can only be achieved within a closed transmission path connected by CATV coaxial cables and optical fiber cables. That is, by adding a wireless system, a completely open transmission path can be obtained, so it is possible to provide a wide variety of regional services over a wide area without having to choose regional conditions.
２）本発明は特に以下のサービス及びシステムには効果
的である。2) The present invention is particularly effective for the following services and systems.
■セキュリティサービス
■非常放送サービス
■ＣＡＴＶ伝送路２重化システム
■各種内室サービス
■ポケットベルサービス
■ページングサービス
■移動体通信システム
３）又、運用方法により、従来のＣへＴＶ設備では不可
能なサービスを可能にし、障害時も、各加入者宅にサー
ビスが可能とする事ができる。■Security service ■Emergency broadcast service ■CATV transmission line redundancy system ■Various indoor services ■Paging service ■Paging service ■Mobile communication system This makes it possible to provide services to each subscriber's home even in the event of a failure.
第１図は従来のＣＡＴＶシステムの概念を示す図、
第２図は従来の分岐・分配装置のブロック図、第３図は
本発明実施例のブロック図である。
特許出願人 住友電気工業株式会社
代
理
人FIG. 1 is a diagram showing the concept of a conventional CATV system, FIG. 2 is a block diagram of a conventional branching/distributing device, and FIG. 3 is a block diagram of an embodiment of the present invention. Patent applicant Sumitomo Electric Industries, Ltd. Agent
Claims (1)
ことを特徴とするＣＡＴＶ分岐・分配装置。1) A CATV branching/distributing device characterized in that a branching/distributing device is provided with means having a wireless transmission/reception function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63160580A JPH0821913B2 (en) | 1988-06-30 | 1988-06-30 | CATV branch / distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63160580A JPH0821913B2 (en) | 1988-06-30 | 1988-06-30 | CATV branch / distribution device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0213031A true JPH0213031A (en) | 1990-01-17 |
| JPH0821913B2 JPH0821913B2 (en) | 1996-03-04 |
Family
ID=15718037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63160580A Expired - Lifetime JPH0821913B2 (en) | 1988-06-30 | 1988-06-30 | CATV branch / distribution device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0821913B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5778303A (en) * | 1993-04-16 | 1998-07-07 | Matsushita Electric Industrial Co., Inc. | Multiplexed audio-video signal transmission system through pair-wire |
| JP2001103446A (en) * | 1999-09-30 | 2001-04-13 | Communication Research Laboratory Mpt | Wireless service system of cable television service, terminal, base station, authentication server, cable television server, control method for them and recording medium |
| JP2001218187A (en) * | 2000-01-28 | 2001-08-10 | Furukawa Electric Co Ltd:The | Interactive catv system, catv network side radio equipment and method for providing interactive catv service |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5016416A (en) * | 1973-06-11 | 1975-02-21 | ||
| JPS5750855U (en) * | 1980-09-06 | 1982-03-24 | ||
| JPS6084028A (en) * | 1983-10-14 | 1985-05-13 | Mitsubishi Electric Corp | Communication equipment |
| JPS61131921A (en) * | 1984-11-30 | 1986-06-19 | Nec Eng Ltd | Backup system by radio equipment at important line is at fault |
| JPS61184013A (en) * | 1985-02-08 | 1986-08-16 | Nec Corp | Control system |
-
1988
- 1988-06-30 JP JP63160580A patent/JPH0821913B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5016416A (en) * | 1973-06-11 | 1975-02-21 | ||
| JPS5750855U (en) * | 1980-09-06 | 1982-03-24 | ||
| JPS6084028A (en) * | 1983-10-14 | 1985-05-13 | Mitsubishi Electric Corp | Communication equipment |
| JPS61131921A (en) * | 1984-11-30 | 1986-06-19 | Nec Eng Ltd | Backup system by radio equipment at important line is at fault |
| JPS61184013A (en) * | 1985-02-08 | 1986-08-16 | Nec Corp | Control system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5778303A (en) * | 1993-04-16 | 1998-07-07 | Matsushita Electric Industrial Co., Inc. | Multiplexed audio-video signal transmission system through pair-wire |
| US6014544A (en) * | 1993-04-16 | 2000-01-11 | Matsushita Electric Industrial Co., Ltd. | Loop detector of a branching device for a multiplexed audio-video signal transmission system |
| JP2001103446A (en) * | 1999-09-30 | 2001-04-13 | Communication Research Laboratory Mpt | Wireless service system of cable television service, terminal, base station, authentication server, cable television server, control method for them and recording medium |
| JP2001218187A (en) * | 2000-01-28 | 2001-08-10 | Furukawa Electric Co Ltd:The | Interactive catv system, catv network side radio equipment and method for providing interactive catv service |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0821913B2 (en) | 1996-03-04 |
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