JPS6085485U

JPS6085485U - Pay TV broadcast reception interface device

Info

Publication number: JPS6085485U
Application number: JP17763883U
Authority: JP
Inventors: 池田　三郎
Original assignee: 三洋電機株式会社
Priority date: 1983-11-16
Filing date: 1983-11-16
Publication date: 1985-06-12
Also published as: JPH0127338Y2

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

[Brief explanation of drawings]

第１図は従来のＣＡＴＶ受信システムを示すブロック図
である。第２図は従来のＣＡＴＶペイテレビ放送受信構
成を示すブロック図である。第３図は先行技術のＣＡＴ
Ｖペイテレビ放送受信機の構成を示すブロック図であ机
第４図は本考案が対象するペイテレビ放送受信用インタ
ーフェース装置のブロック図であり、第５図はその具体
的回路構成図である。第６図は本考案を実施したペイテ
レビ放送受信用インターフェース装置の構成図である。３・・・・・・デコーダ、４・・・・・・チューナ、５
・・・・・・ＶＩＦ回路、６・・・・・・インターフェ
ース装置、７・・・・・・第１入力端子、８・・・・・
・第１ミキサ、９・・・・・・第１出力端子、１５・・
・・・・第２入力端子、１６・・・・・・第２ミキサ、
１７・・・・・・第２出力端子、３０・曲・第３出力端
子、４０・・・・・・ＶＩＦ回路用ＩＣ，４４・・・・
・・金属筐体、４５・・・・・・シールド板、４６・・
・・・・プリント基板。FIG. 1 is a block diagram showing a conventional CATV reception system. FIG. 2 is a block diagram showing a conventional CATV pay television broadcast reception configuration. Figure 3 is the CAT of the prior art
FIG. 4 is a block diagram showing the configuration of a V-pay television broadcast receiver. FIG. 4 is a block diagram of a pay television broadcast receiving interface device to which the present invention is applied, and FIG. 5 is a specific circuit configuration diagram thereof. FIG. 6 is a block diagram of an interface device for receiving pay TV broadcasts embodying the present invention. 3...Decoder, 4...Tuner, 5
...VIF circuit, 6...Interface device, 7...1st input terminal, 8...
・First mixer, 9...First output terminal, 15...
...Second input terminal, 16...Second mixer,
17...2nd output terminal, 30.Tune/3rd output terminal, 40...VIF circuit IC, 44...
...Metal casing, 45...Shield plate, 46...
····Printed board.

Claims

[Scope of utility model registration request]

The output from the tuner inserted between the tuner and the VIP circuit in the television broadcast receiver is supplied to a decoder for descrambling, and the output from the decoder is
IF of the tuner, which is supplied to the IP circuit.
a first input terminal for inputting a positive signal; a first mixer for up-conversion for converting the IF positive signal from the first input terminal into a specific channel; and a first mixer for providing the output of the first mixer to the decoder. an output terminal, a second input terminal for inputting a high frequency signal from the decoder, a second mixer for down converting the high frequency signal from the second input terminal into a positive signal, and a second mixer for down converting the high frequency signal from the second input terminal into a positive signal; V
for a VIP circuit connected to receive an IF positive signal from a second output terminal for supplying to the IP circuit and the first input terminal for generating an AFT signal for controlling the local oscillation frequency of the tuner; IC and A from said IC
In an interface device having a third output terminal for deriving an FT signal, a metal casing provided with the input terminal and the output terminal is provided with a shield plate for arranging the first mixer, the second mixer, and the VIP circuit IC. 1. An interface device for receiving pay television broadcasting, characterized in that the second output terminal is sufficiently separated from both the VIP circuit IC and the first input terminal.