JPS6233092U - - Google Patents
Info
- Publication number
- JPS6233092U JPS6233092U JP12402385U JP12402385U JPS6233092U JP S6233092 U JPS6233092 U JP S6233092U JP 12402385 U JP12402385 U JP 12402385U JP 12402385 U JP12402385 U JP 12402385U JP S6233092 U JPS6233092 U JP S6233092U
- Authority
- JP
- Japan
- Prior art keywords
- comparator
- data
- data latch
- frame buffer
- crt
- 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
- 239000013256 coordination polymer Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の一実施例を示す構成図、第２
図は、従来のグラフイツクデイスプレイ装置の構
成図、第３図は、メモリチエツクのアルゴリズム
を示す説明図である。
１……フレームバツフア、２……ＣＲＴコント
ローラ、３……並―直列変換器、４……ＣＰＵ、
５……タイミング制御回路、６……第１のデータ
ラツチ、７……コンパレータ、８……第２のデー
タラツチ。
Fig. 1 is a configuration diagram showing one embodiment of the present invention;
This figure is a block diagram of a conventional graphic display device, and FIG. 3 is an explanatory diagram showing a memory check algorithm. 1...Frame buffer, 2...CRT controller, 3...Parallel-serial converter, 4...CPU,
5... Timing control circuit, 6... First data latch, 7... Comparator, 8... Second data latch.
Claims (1)
Ｕより構成されるグラフイツクデイスプレイ装置
において、前記ＣＰＵにデータバスから特定のデ
ータパターンを記憶する第１のデータラツチと、
前記第１のデータラツチの出力と前記フレームバ
ツフアのデータ出力とを比較するコンプレータと
、前記コンパレータの比較結果を記憶して前記Ｃ
ＰＵに伝える第２のデータラツチと、前記ＣＲＴ
コントローラの表示制御信号に基づいて前記コン
パレータおよび第２のデータラツチの動作を司ど
る制御手段とを具備することを特徴とするグラフ
イツクデイスプレイ装置。 Frame buffer, CRT controller and CP
a first data latch for storing a specific data pattern from a data bus in the CPU;
a comparator that compares the output of the first data latch and the data output of the frame buffer; and a comparator that stores the comparison result of the comparator.
a second data latch that communicates to the PU and the CRT;
A graphic display device comprising: control means for controlling the operations of the comparator and the second data latch based on a display control signal from a controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12402385U JPS6233092U (en) | 1985-08-14 | 1985-08-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12402385U JPS6233092U (en) | 1985-08-14 | 1985-08-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6233092U true JPS6233092U (en) | 1987-02-27 |
Family
ID=31015659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12402385U Pending JPS6233092U (en) | 1985-08-14 | 1985-08-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6233092U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60167138U (en) * | 1984-04-13 | 1985-11-06 | 日産自動車株式会社 | Engine combustion control device |
-
1985
- 1985-08-14 JP JP12402385U patent/JPS6233092U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60167138U (en) * | 1984-04-13 | 1985-11-06 | 日産自動車株式会社 | Engine combustion control device |