JPS5837266U

JPS5837266U - Image quality adjustment circuit

Info

Publication number: JPS5837266U
Application number: JP13275081U
Authority: JP
Inventors: 敦志松崎; 磯辺　敏信; 川俣　光雄
Original assignee: ソニー株式会社
Priority date: 1981-09-07
Filing date: 1981-09-07
Publication date: 1983-03-10

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 the drawing]

第１図は従来の垂直アバーヂャ補正回路を示すブロック
図、第２図ないし第４図はその動作原理の説明に供する
路線図及び信号波形図、第５図は第１図の具体的構成を
示す接続図、第′６図は本考案に依る画質調整回路の一
例を示す接続図である。１・・・映像信号源、２．３・・・１水平期間遅延回路
、４Ａ〜４Ｃ・・・サブキャリア除去用フィルタ、５Ａ
〜５Ｃ・・・定数回路、６・・・加算回路、７・・・出
力調整回路、８・・・加算器、１５・・・遅延線、１６
Ａ〜１６Ｃ・・・トランスバーサルフィルタ部、１７・
・・前置増幅用トラ、ンジスタ、１８Ａ〜１８Ｃ・・・
入力回路部、２２・・・直流阻止用コンデンサ、６５・
・・基準電圧発生回路。− 「１２伯り第ｈ−図　〜−十 ψ４　朝！Ｆｌ　１ｍＩＩＦｌｂ＠Ｊ）Figure 1 is a block diagram showing a conventional vertical average correction circuit, Figures 2 to 4 are route diagrams and signal waveform diagrams to explain its operating principle, and Figure 5 shows the specific configuration of Figure 1. Connection diagram FIG. 6 is a connection diagram showing an example of an image quality adjustment circuit according to the present invention. 1... Video signal source, 2.3... 1 horizontal period delay circuit, 4A to 4C... Subcarrier removal filter, 5A
~5C...Constant circuit, 6...Addition circuit, 7...Output adjustment circuit, 8...Adder, 15...Delay line, 16
A~16C... Transversal filter section, 17.
・Pre-amplification tiger, resistor, 18A to 18C...
Input circuit section, 22... DC blocking capacitor, 65.
...Reference voltage generation circuit. - "1 2 H-Figure ~-10ψ4 Morning! Fl 1m IIFlb @ J)

Claims

[Scope of utility model registration request]

The video signal is sequentially delayed to create multiple delayed video signals,
Each delayed video signal is applied to a plurality of transversal filter sections each having a delay line having a constant for removing subcarriers via an input circuit section each having a preamplification transistor, and the outputs of the plurality of filter sections are synthesized. In the image quality adjustment circuit, the output of the preamplification transistor of the input circuit section is configured to obtain a video processing signal having a prosciutto or overage pentagram waveform every time a change in brightness occurs in the video signal. An image quality adjustment circuit characterized in that a DC blocking capacitor is inserted between one end of the delay line and an input end of the delay line, and a reference voltage of a reference voltage generation circuit is connected to the other end of the delay line.