JPS6074382U - Scrambler for pay cable television systems - Google Patents
Scrambler for pay cable television systemsInfo
- Publication number
- JPS6074382U JPS6074382U JP16552283U JP16552283U JPS6074382U JP S6074382 U JPS6074382 U JP S6074382U JP 16552283 U JP16552283 U JP 16552283U JP 16552283 U JP16552283 U JP 16552283U JP S6074382 U JPS6074382 U JP S6074382U
- Authority
- JP
- Japan
- Prior art keywords
- scrambler
- cable television
- television systems
- pay cable
- pay
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のスクランブル方式の構成を示すブロック
図、第２図は分岐器およびスクランブル装置の配線図、
第３図は本考案におけるスクランブル方法を示す図で、
イはテレビジョン信号のスペクトラム、口は妨害信号の
スペクトラム、ン１はスイッチおよび妨害信号発生器の
配線図、第４図は本考案によるスクランブル装置の回路
図、第５図は第４図に示す回路のスイッチのオン／オフ
のタイミングを示す図である。
１・・・・・・ヘッド・エンド、２・・・・・・制御信
号発生器、３・・・・・・混合器、４・・・・・・分配
器、５・・・・・・分岐器ミロ・・・・・・スクランブ
ル装置、７・・・・・・復調器、８・・・・・・制御器
、５ＩＡ−３４Ｄ・・・・・・制御スイッチ、Ｏ８Ｃ□
〜４・・・・・・妨害信号発生器。Figure 1 is a block diagram showing the configuration of a conventional scrambling system, Figure 2 is a wiring diagram of a branch and scrambling device,
Figure 3 is a diagram showing the scrambling method in the present invention.
A is the spectrum of the television signal, N is the spectrum of the interference signal, N1 is the wiring diagram of the switch and the interference signal generator, Figure 4 is the circuit diagram of the scrambling device according to the present invention, and Figure 5 is shown in Figure 4. FIG. 3 is a diagram showing the timing of turning on/off a circuit switch. 1... Head end, 2... Control signal generator, 3... Mixer, 4... Distributor, 5... Branch Miro... Scramble device, 7... Demodulator, 8... Controller, 5IA-34D... Control switch, O8C□
~4... Interfering signal generator.
Claims (1)
分岐器当りチャネル数に等しく、妨害信号混合が線路ご
とに時分割で行なわれることを特徴とする有料ケーブル
Φテレビ・システムの多チャネル・スクランブル装置。A pay cable Φ television system characterized in that the number of jamming signal generators connected to branch lines for each subscriber is equal to the number of channels per branch, and the mixing of the jamming signals is carried out on a time-sharing basis for each line. Channel scrambling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16552283U JPS6074382U (en) | 1983-10-25 | 1983-10-25 | Scrambler for pay cable television systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16552283U JPS6074382U (en) | 1983-10-25 | 1983-10-25 | Scrambler for pay cable television systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6074382U true JPS6074382U (en) | 1985-05-24 |
| JPH0117899Y2 JPH0117899Y2 (en) | 1989-05-24 |
Family
ID=30362606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16552283U Granted JPS6074382U (en) | 1983-10-25 | 1983-10-25 | Scrambler for pay cable television systems |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6074382U (en) |
-
1983
- 1983-10-25 JP JP16552283U patent/JPS6074382U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0117899Y2 (en) | 1989-05-24 |
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