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
Links
- 239000003086 colorant Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
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)
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.
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) |
-
1988
- 1988-04-19 JP JP5239188U patent/JPH01157391U/ja active Pending