JPS5457840A - Display unit - Google Patents
Display unitInfo
- Publication number
- JPS5457840A JPS5457840A JP12481977A JP12481977A JPS5457840A JP S5457840 A JPS5457840 A JP S5457840A JP 12481977 A JP12481977 A JP 12481977A JP 12481977 A JP12481977 A JP 12481977A JP S5457840 A JPS5457840 A JP S5457840A
- Authority
- JP
- Japan
- Prior art keywords
- data
- computer
- memory
- characters
- display
- 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
Landscapes
- Digital Computer Display Output (AREA)
- Document Processing Apparatus (AREA)
Abstract
PURPOSE: To display characters superposing them upon a picture by simplify the insersion and deletion of characters and lines by giving an instruction for editing from a computer, by supplying codes to be displayed from the computer to a code refresh memory for its control.
CONSTITUTION: Digital picture data connected to computer 1 and transferred are stored on raster scan system, and charactertrain data, etc., transferred by the display unit are stored in circulating code refresh memory 2 is sequence for display. The circulation path of this memory 2 is provided with editing circuit 13 which makes the modification, insersion and deletion of characters and lines according to the instruction from computer 1. Then, data in memory 2 are read out synchronizing with the raster scan of monitor 5, and position-coordinate data in the data is compared with the content of address counter 4 for displaying picture data; when the both agree each other, the pattern of character generator 6 is read out corresponding to character codes, and then, displayed being superposed upon the picture data
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12481977A JPS5457840A (en) | 1977-10-17 | 1977-10-17 | Display unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12481977A JPS5457840A (en) | 1977-10-17 | 1977-10-17 | Display unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5457840A true JPS5457840A (en) | 1979-05-10 |
Family
ID=14894885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12481977A Pending JPS5457840A (en) | 1977-10-17 | 1977-10-17 | Display unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5457840A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5781670A (en) * | 1980-11-07 | 1982-05-21 | Hitachi Ltd | Editing method of document |
-
1977
- 1977-10-17 JP JP12481977A patent/JPS5457840A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5781670A (en) * | 1980-11-07 | 1982-05-21 | Hitachi Ltd | Editing method of document |
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