JPH0449336U - - Google Patents

Info

Publication number
JPH0449336U
JPH0449336U JP6815190U JP6815190U JPH0449336U JP H0449336 U JPH0449336 U JP H0449336U JP 6815190 U JP6815190 U JP 6815190U JP 6815190 U JP6815190 U JP 6815190U JP H0449336 U JPH0449336 U JP H0449336U
Authority
JP
Japan
Prior art keywords
circuit
current
conversion circuit
addition type
contrast
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
JP6815190U
Other languages
English (en)
Other versions
JP2505814Y2 (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 JP6815190U priority Critical patent/JP2505814Y2/ja
Publication of JPH0449336U publication Critical patent/JPH0449336U/ja
Application granted granted Critical
Publication of JP2505814Y2 publication Critical patent/JP2505814Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Television Receiver Circuits (AREA)

Description

【図面の簡単な説明】
第１図は、本考案の一実施例を示す回路図、第
２図及び第３図は従来の輝度調整回路を示す回路
図である。 ４……コントラスト調整回路、１１……Ｄ／Ａ
変換回路、１２……ＡＢＬ回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 テレビ画面のコントラストを調整する為のデジ
    タル信号をアナログ信号に変換する電流加算型Ｄ
    ／Ａ変換回路と、 ブラウン管のビーム電流と基準値とを比較し、
    その差が所定値以上になると前記電流加算型Ｄ／
    Ａ変換回路の出力電流を直接制御するＡＢＬ回路
    と、 前記Ｄ／Ａ変換回路の出力電流に応じて制御さ
    れるコントラスト調整回路と から成ることを特徴とする輝度調整回路。
JP6815190U 1990-06-27 1990-06-27 輝度調整回路 Expired - Lifetime JP2505814Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6815190U JP2505814Y2 (ja) 1990-06-27 1990-06-27 輝度調整回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6815190U JP2505814Y2 (ja) 1990-06-27 1990-06-27 輝度調整回路

Publications (2)

Publication Number Publication Date
JPH0449336U true JPH0449336U (ja) 1992-04-27
JP2505814Y2 JP2505814Y2 (ja) 1996-08-07

Family

ID=31800788

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6815190U Expired - Lifetime JP2505814Y2 (ja) 1990-06-27 1990-06-27 輝度調整回路

Country Status (1)

Country Link
JP (1) JP2505814Y2 (ja)

Also Published As

Publication number Publication date
JP2505814Y2 (ja) 1996-08-07

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term