JPS6076391U

JPS6076391U - Special color display circuit for color display

Info

Publication number: JPS6076391U
Application number: JP16807083U
Authority: JP
Inventors: 実山下
Original assignee: シャープ株式会社
Priority date: 1983-10-28
Filing date: 1983-10-28
Publication date: 1985-05-28
Also published as: JPS6344858Y2

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図はカラーディスプレイのブロック図、第２図はア
ナログ原色信号作製回路のブロック図、第３図は本考案
に係るカラーディスプレイの特別色表示回路の一実施例
の回路図、第４図は特別色表示回路を有するアナログ原
色信号作製回路の具体的な回路図である。３・・・アナログ原色信号作製回路、１２・・・Ｒ信号
Ｄ／Ａ変換器、１３・・・Ｇ信号Ｄ／Ａ変換器、１４・
・・Ｂ信号Ｄ／Ａ変換器、１５・・・論理積回路、１６
．１７．１８・・・アナログ原色信号減衰回路、２３・
・・アンドゲート、２４・・・トランジスタ、２５・・
・抵抗、２６・・・アナログＲ信号比カライン。Fig. 1 is a block diagram of a color display, Fig. 2 is a block diagram of an analog primary color signal generation circuit, Fig. 3 is a circuit diagram of an embodiment of a special color display circuit for a color display according to the present invention, and Fig. 4 is a block diagram of an analog primary color signal generation circuit. FIG. 2 is a specific circuit diagram of an analog primary color signal generation circuit having a special color display circuit. 3... Analog primary color signal production circuit, 12... R signal D/A converter, 13... G signal D/A converter, 14.
... B signal D/A converter, 15 ... AND circuit, 16
．． 17.18...Analog primary color signal attenuation circuit, 23.
...And gate, 24...Transistor, 25...
・Resistance, 26...Analog R signal ratio color line.

Claims

[Scope of utility model registration request]

The red, green, and blue digital primary color signals and intensity signals input from the computer are converted into multi-gradation analog primary color signals of red, green, and blue, and the red, green, and intensity signals of each gradation are converted into red, green, and blue analog primary color signals.
In a color display in which a blue analog primary color signal is combined in correspondence with the red, green, and blue digital primary color signals and an intensity signal so that multiple types of basic colors are displayed on a cathode ray tube, the red, green, and , an AND circuit that takes the AND of the digital primary color signal of blue and the intensity signal, and an analog primary color signal attenuation circuit that attenuates and outputs the analog primary color signals of red, green, and blue by the output of this AND circuit. A special color display circuit for a color display characterized by: