JPH01157391U - - Google Patents

Info

Publication number
JPH01157391U
JPH01157391U JP5239188U JP5239188U JPH01157391U JP H01157391 U JPH01157391 U JP H01157391U JP 5239188 U JP5239188 U JP 5239188U JP 5239188 U JP5239188 U JP 5239188U JP H01157391 U JPH01157391 U JP H01157391U
Authority
JP
Japan
Prior art keywords
dot clock
clock generator
screen
crt
display area
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
JP5239188U
Other languages
Japanese (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 JP5239188U priority Critical patent/JPH01157391U/ja
Publication of JPH01157391U publication Critical patent/JPH01157391U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの考案の一実施例の要部構成を示す
ブロツク図、第2図は従来例の要部構成を示すブ
ロツク図、第3図はCRT画面の領域構成を示す
図である。 1は表示画面領域用ドツトクロツク発生器(第
1のドツトクロツク発生器)、2はドライバ、3
はCRT、4はボーダーカラー領域用ドツトクロ
ツク発生器(第2のドツトクロツク発生器)、5
はセレクタ、6は切替信号、31はCRT画面、
32は表示画面領域、33はボーダーカラー領域
(非表示領域)。なお、図中、同一符号は同一、
又は相当部分を示す。
FIG. 1 is a block diagram showing the main structure of an embodiment of this invention, FIG. 2 is a block diagram showing the main structure of a conventional example, and FIG. 3 is a diagram showing the area structure of a CRT screen. 1 is a dot clock generator for the display screen area (first dot clock generator); 2 is a driver; 3
is a CRT, 4 is a dot clock generator for the border color area (second dot clock generator), 5 is a dot clock generator for the border color area;
is a selector, 6 is a switching signal, 31 is a CRT screen,
32 is a display screen area, and 33 is a border color area (non-display area). In addition, in the figure, the same reference numerals are the same,
or a corresponding portion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] CRT画面内にあつて周囲が非表示領域によつ
て縁取られた表示画面領域に文字や図形を表示す
るための第1のドツトクロツク発生器と、上記非
表示領域に表示画面領域の背景色とは異なる所定
の色のみを表示するための第2のドツトクロツク
発生器と、所定のタイミングに従つて上記各ドツ
トクロツク発生器のうち一方の出力を選択してC
RTへ出力するセレクタとを備えたことを特徴と
するCRTコントローラ。
A first dot clock generator for displaying characters and figures in a display screen area surrounded by a non-display area within a CRT screen, and a background color of the screen area displayed in the non-display area. a second dot clock generator for displaying only different predetermined colors, and selecting the output of one of the dot clock generators according to a predetermined timing.
A CRT controller characterized by comprising a selector for outputting to an RT.
JP5239188U 1988-04-19 1988-04-19 Pending JPH01157391U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5239188U JPH01157391U (en) 1988-04-19 1988-04-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5239188U JPH01157391U (en) 1988-04-19 1988-04-19

Publications (1)

Publication Number Publication Date
JPH01157391U true JPH01157391U (en) 1989-10-30

Family

ID=31278390

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5239188U Pending JPH01157391U (en) 1988-04-19 1988-04-19

Country Status (1)

Country Link
JP (1) JPH01157391U (en)

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