JPH0193820U - - Google Patents

Info

Publication number
JPH0193820U
JPH0193820U JP1987190330U JP19033087U JPH0193820U JP H0193820 U JPH0193820 U JP H0193820U JP 1987190330 U JP1987190330 U JP 1987190330U JP 19033087 U JP19033087 U JP 19033087U JP H0193820 U JPH0193820 U JP H0193820U
Authority
JP
Japan
Prior art keywords
filter
output
squelch
section
amplifier
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
Application number
JP1987190330U
Other languages
English (en)
Other versions
JPH0522975Y2 (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 JP1987190330U priority Critical patent/JPH0522975Y2/ja
Publication of JPH0193820U publication Critical patent/JPH0193820U/ja
Application granted granted Critical
Publication of JPH0522975Y2 publication Critical patent/JPH0522975Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Details Of Television Systems (AREA)
  • Control Of Amplification And Gain Control (AREA)

Description

【図面の簡単な説明】
第1図はこの考案によるチヤンネル専用増幅器
の1実施例のブロツク図、第2図は従来のチヤン
ネル専用増幅器を用いたヘツドエンドの1例のブ
ロツク図、第3図はスイツチング部の回路図、第
4図は従来のチヤンネル専用増幅器の周波数特性
図である。 20b……利得可変増幅部、22……自動利得
制御回路、26……スケルチ回路、30……スケ
ルチ用スイツチング部、40……帯域通過フイル
タ。

Claims (1)

    【実用新案登録請求の範囲】
  1. 様々なチヤンネル信号が入力される利得可変増
    幅部と、この増幅部の出力信号から所望のチヤン
    ネル信号を抽出するように通過帯域幅が選択され
    た帯域通過フイルタと、このフイルタの出力側に
    設けられたスケルチ用スイツチング部と、上記フ
    イルタの出力に応じて上記スイツチング部を開閉
    制御するスケルチ回路と、上記フイルタの出力に
    応じて上記利得可変増幅部の利得を制御する自動
    利得制御回路とを、具備するチヤンネル専用増幅
    器。
JP1987190330U 1987-12-15 1987-12-15 Expired - Lifetime JPH0522975Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987190330U JPH0522975Y2 (ja) 1987-12-15 1987-12-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987190330U JPH0522975Y2 (ja) 1987-12-15 1987-12-15

Publications (2)

Publication Number Publication Date
JPH0193820U true JPH0193820U (ja) 1989-06-20
JPH0522975Y2 JPH0522975Y2 (ja) 1993-06-14

Family

ID=31481312

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987190330U Expired - Lifetime JPH0522975Y2 (ja) 1987-12-15 1987-12-15

Country Status (1)

Country Link
JP (1) JPH0522975Y2 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52126712U (ja) * 1976-03-22 1977-09-27
JPS5591211U (ja) * 1978-12-18 1980-06-24

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52126712U (ja) * 1976-03-22 1977-09-27
JPS5591211U (ja) * 1978-12-18 1980-06-24

Also Published As

Publication number Publication date
JPH0522975Y2 (ja) 1993-06-14

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