JPS6381464U - - Google Patents

Info

Publication number
JPS6381464U
JPS6381464U JP17427486U JP17427486U JPS6381464U JP S6381464 U JPS6381464 U JP S6381464U JP 17427486 U JP17427486 U JP 17427486U JP 17427486 U JP17427486 U JP 17427486U JP S6381464 U JPS6381464 U JP S6381464U
Authority
JP
Japan
Prior art keywords
frequency
detection means
variable gain
gain amplifier
envelope
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
JP17427486U
Other languages
English (en)
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 JP17427486U priority Critical patent/JPS6381464U/ja
Publication of JPS6381464U publication Critical patent/JPS6381464U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Picture Signal Circuits (AREA)
  • Television Signal Processing For Recording (AREA)

Description

【図面の簡単な説明】
図面はいずれも本考案の実施例に係り、第１図
は回路ブロツク図、第２図はフイルタの周波数特
性を示す図、第３図、第４図は総合的な周波数特
性を示す図である。 １０……エンベロープ検出回路、１１……ロウ
パスフイルタ、１２……バンドパスフイルタ、１
４……可変利得アンプ。

Claims (1)

    【実用新案登録請求の範囲】
  1. ヘツドからの再生出力のエンベロープのレベル
    を検出するエンベロープ検出手段と、復調輝度信
    号を高域と低域の成分に分離する手段と、この高
    域の成分を入力として前記エンベロープ検出手段
    により利得が制御される可変利得アンプとを備え
    てなる自動画質改善回路。
JP17427486U 1986-11-13 1986-11-13 Pending JPS6381464U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17427486U JPS6381464U (ja) 1986-11-13 1986-11-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17427486U JPS6381464U (ja) 1986-11-13 1986-11-13

Publications (1)

Publication Number Publication Date
JPS6381464U true JPS6381464U (ja) 1988-05-28

Family

ID=31112504

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17427486U Pending JPS6381464U (ja) 1986-11-13 1986-11-13

Country Status (1)

Country Link
JP (1) JPS6381464U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0358687A (ja) * 1989-07-27 1991-03-13 Mitsubishi Electric Corp 画像信号処理装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5526742A (en) * 1978-08-16 1980-02-26 Toshiba Corp Automatic picture-quality regulator circuit
JPS6030277A (ja) * 1983-07-29 1985-02-15 Hitachi Ltd ビデオカメラの信号処理回路

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5526742A (en) * 1978-08-16 1980-02-26 Toshiba Corp Automatic picture-quality regulator circuit
JPS6030277A (ja) * 1983-07-29 1985-02-15 Hitachi Ltd ビデオカメラの信号処理回路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0358687A (ja) * 1989-07-27 1991-03-13 Mitsubishi Electric Corp 画像信号処理装置

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