JPS6157777U - - Google Patents

Info

Publication number
JPS6157777U
JPS6157777U JP14275484U JP14275484U JPS6157777U JP S6157777 U JPS6157777 U JP S6157777U JP 14275484 U JP14275484 U JP 14275484U JP 14275484 U JP14275484 U JP 14275484U JP S6157777 U JPS6157777 U JP S6157777U
Authority
JP
Japan
Prior art keywords
terminal
broadcasting center
conductive state
address
amplifiers
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
Application number
JP14275484U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP14275484U priority Critical patent/JPS6157777U/ja
Publication of JPS6157777U publication Critical patent/JPS6157777U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案に係る双方向ケーブルテレビ
ジヨンシステムの一実施例を示すブロツク構成図
、第２図はこの考案が適用される双方向ケーブル
テレビジヨンシステムの概要を示すブロツク構成
図である。 １１…放送センタ、１３…幹線、１４…分岐増
幅器、１４９…デコーダ、１４ｂ…スイツチ、１
５…分岐線、１６…タツプオフ、１７…端末機器
。 FIG. 1 is a block diagram showing an embodiment of a two-way cable television system according to this invention, and FIG. 2 is a block diagram showing an outline of a two-way cable television system to which this invention is applied. 11... Broadcasting center, 13... Main line, 14... Branch amplifier, 149... Decoder, 14b... Switch, 1
5...branch line, 16...tap-off, 17...terminal equipment.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 伝送幹線に複数の分岐増幅器を設けこの分岐増
幅器を通じて放送センタと多数の端末とを接続し
、前記放送センタから所定の端末に対してデータ
返送要求信号を伝送し、その端末からの応答信号
を前記放送センタへ伝送する双方向ケーブルテレ
ビジヨンシステムにおいて、前記放送センタから
送出されるデータ返送要求信号に前記分岐増幅器
を指定するアドレス信号を付加する手段と、前記
複数の分岐増幅器それぞれにアドレス判断回路を
設けると共に端末からの伝送路に前記アドレス判
断回路の出力に応じて導通状態及び非導通状態と
なるスイツチ回路を設けて前記アドレス信号によ
り指定された分岐増幅器のスイツチ回路のみ導通
状態とする手段とを具備したことを特徴とする双
方向ケーブルテレビジヨンシステム。 A plurality of branch amplifiers are provided on the transmission main line, and a broadcasting center and a large number of terminals are connected through the branch amplifiers, and a data return request signal is transmitted from the broadcasting center to a predetermined terminal, and a response signal from that terminal is transmitted to the terminal. In a two-way cable television system for transmitting data to a broadcasting center, means for adding an address signal specifying the branching amplifier to a data return request signal sent from the broadcasting center, and an address determining circuit for each of the plurality of branching amplifiers. and a switch circuit which is placed in a conductive state or a non-conductive state in accordance with the output of the address determination circuit is provided in the transmission path from the terminal, and means for making only the switch circuit of the branch amplifier designated by the address signal into the conductive state. A two-way cable television system characterized by:
JP14275484U 1984-09-20 1984-09-20 Pending JPS6157777U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14275484U JPS6157777U (en) 1984-09-20 1984-09-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14275484U JPS6157777U (en) 1984-09-20 1984-09-20

Publications (1)

Publication Number Publication Date
JPS6157777U true JPS6157777U (en) 1986-04-18

Family

ID=30701064

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14275484U Pending JPS6157777U (en) 1984-09-20 1984-09-20

Country Status (1)

Country Link
JP (1) JPS6157777U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5295115A (en) * 1976-02-06 1977-08-10 Matsushita Electric Ind Co Ltd Ascending circuit connecting method in two-ways catv system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5295115A (en) * 1976-02-06 1977-08-10 Matsushita Electric Ind Co Ltd Ascending circuit connecting method in two-ways catv system

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