JPS5487126A - Character display unit enabling picture display - Google Patents
Character display unit enabling picture displayInfo
- Publication number
- JPS5487126A JPS5487126A JP15535877A JP15535877A JPS5487126A JP S5487126 A JPS5487126 A JP S5487126A JP 15535877 A JP15535877 A JP 15535877A JP 15535877 A JP15535877 A JP 15535877A JP S5487126 A JPS5487126 A JP S5487126A
- Authority
- JP
- Japan
- Prior art keywords
- memory
- agreement
- address register
- register
- character
- 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.)
- Granted
Links
Abstract
PURPOSE: To remarkably reduce the memory capacity, by feeding the address indicating the picture information memory area of memory to the image address register, comparing the content with the memory address register, and selecting the picture display and character pattern display if in agreement.
CONSTITUTION: The memory 2 memorizes the character code, and the output is displayed on CRT 11 via the character generator 8, while the agreement between the content of the address register 3 of the memory 2 and that of the image address register 3 is detected 5, and the input to CRT 11 is selected to the memory 2 or generator unit with the selector 9. Video information is fed to the memory 2 and it is memorized. Further, the address representing the video information memory area of the memory 2 is fed to the register 3 and the selector 9 is operated when the content of the memory address register 4 and that of the register 3 are in agreement and agreement circuit causes an output, allowing to the selection of the picture display of CRT 11 and the character pattern display. Thus, the memory capacity can remarkably be reduced.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15535877A JPS5487126A (en) | 1977-12-23 | 1977-12-23 | Character display unit enabling picture display |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15535877A JPS5487126A (en) | 1977-12-23 | 1977-12-23 | Character display unit enabling picture display |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5487126A true JPS5487126A (en) | 1979-07-11 |
JPS6134155B2 JPS6134155B2 (en) | 1986-08-06 |
Family
ID=15604149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15535877A Granted JPS5487126A (en) | 1977-12-23 | 1977-12-23 | Character display unit enabling picture display |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5487126A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54139429A (en) * | 1978-04-21 | 1979-10-29 | Hitachi Ltd | Crt display unit |
JPS56110144A (en) * | 1980-02-06 | 1981-09-01 | Hitachi Ltd | Graphic indicator having error display function |
JPS56142584A (en) * | 1980-04-07 | 1981-11-06 | Nippon Electric Co | Data output system |
-
1977
- 1977-12-23 JP JP15535877A patent/JPS5487126A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54139429A (en) * | 1978-04-21 | 1979-10-29 | Hitachi Ltd | Crt display unit |
JPH0227676B2 (en) * | 1978-04-21 | 1990-06-19 | Hitachi Ltd | |
JPS56110144A (en) * | 1980-02-06 | 1981-09-01 | Hitachi Ltd | Graphic indicator having error display function |
JPS56142584A (en) * | 1980-04-07 | 1981-11-06 | Nippon Electric Co | Data output system |
JPS6140110B2 (en) * | 1980-04-07 | 1986-09-08 | Nippon Electric Co |
Also Published As
Publication number | Publication date |
---|---|
JPS6134155B2 (en) | 1986-08-06 |
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