JPS60160676U - CATV system descrambling device - Google Patents

CATV system descrambling device

Info

Publication number
JPS60160676U
JPS60160676U JP4667184U JP4667184U JPS60160676U JP S60160676 U JPS60160676 U JP S60160676U JP 4667184 U JP4667184 U JP 4667184U JP 4667184 U JP4667184 U JP 4667184U JP S60160676 U JPS60160676 U JP S60160676U
Authority
JP
Japan
Prior art keywords
signals
transmitting
signal
video
catv
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
JP4667184U
Other languages
Japanese (ja)
Inventor
天内　紀元
Original Assignee
日立電子株式会社
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 by 日立電子株式会社 filed Critical 日立電子株式会社
Priority to JP4667184U priority Critical patent/JPS60160676U/en
Publication of JPS60160676U publication Critical patent/JPS60160676U/en
Pending legal-status Critical Current

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

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

第１図は従来のデスクランブル装置のブロック図、第２
図は本考案のデスクランブル装置のブロック図である。Figure 1 is a block diagram of a conventional descrambling device, Figure 2 is a block diagram of a conventional descrambling device.
The figure is a block diagram of the descrambling device of the present invention.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ＲＦ映像信号とＲＦ音声信号を伝送するＣＡＴＶシステ
ムであって、許可された加入者にのみ信号を提供するた
めに送信側では映像信号に特殊破壊操作（スクランブル
）を行なって送信し、音声信号は正常信号をそのまま送
信する方式において、受信側のあらかじめ与えられた特
殊コードにより上記スクランブルされた映像信号を正常
に復元（デスクランブル）する手段に該映像信号のディ
スクランブル動作に同期させ上記受信音声信号出力の送
出を制御する手段を付加したことを特徴とするＣＡＴＶ
システムのデスクランブル装置。This is a CATV system that transmits RF video signals and RF audio signals.In order to provide the signals only to authorized subscribers, the transmitting side performs a special destruction operation (scramble) on the video signals before transmitting them, and the audio signals are scrambled. In a method of transmitting a normal signal as it is, the received audio signal is synchronized with the descrambling operation of the video signal to a means for normally restoring (descrambling) the scrambled video signal using a special code given in advance on the receiving side. CATV characterized by adding means for controlling output transmission
System descrambler.
JP4667184U 1984-04-02 1984-04-02 CATV system descrambling device Pending JPS60160676U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4667184U JPS60160676U (en) 1984-04-02 1984-04-02 CATV system descrambling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4667184U JPS60160676U (en) 1984-04-02 1984-04-02 CATV system descrambling device

Publications (1)

Publication Number Publication Date
JPS60160676U true JPS60160676U (en) 1985-10-25

Family

ID=30561290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4667184U Pending JPS60160676U (en) 1984-04-02 1984-04-02 CATV system descrambling device

Country Status (1)

Country Link
JP (1) JPS60160676U (en)

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