JPS56153443A - Page boundary display system - Google Patents
Page boundary display systemInfo
- Publication number
- JPS56153443A JPS56153443A JP5680780A JP5680780A JPS56153443A JP S56153443 A JPS56153443 A JP S56153443A JP 5680780 A JP5680780 A JP 5680780A JP 5680780 A JP5680780 A JP 5680780A JP S56153443 A JPS56153443 A JP S56153443A
- Authority
- JP
- Japan
- Prior art keywords
- counter
- line
- character
- raster
- output
- 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
Abstract
PURPOSE: To reduce a burden of a program and improve the use efficiency of a memory and the use efficiency of a screen by performing the display controlling of a page boundary line with a hardware.
CONSTITUTION: The output clock CK from an oscillator 10 is raster scan by a dot counter 11, whic is self-reset by a count value 17 to count a character area of 15 dots and an inter-character space of 2 dots as one unit, and outputs an output pulse P1 by assuming that 1 raster has advanced by 1 character. Further, the clock is counted by a character counter 12 and a raster counter 13, which output the count values in which 1 raster scan is completed and scan for 1 line is completed by the pulses P2 and P3. The pulse P4 indicating the scan completion of one screen is outputted by a line counter 14, and the line number by a page boundary register 15 and the line number 20 by the instruction from the counter 14 are compared in a comparator 17. Adopting the logic of the coincided output compared as above and the preset count value of the counter 13, the boundary number is transmitted to a display device.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5680780A JPS56153443A (en) | 1980-04-28 | 1980-04-28 | Page boundary display system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5680780A JPS56153443A (en) | 1980-04-28 | 1980-04-28 | Page boundary display system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56153443A true JPS56153443A (en) | 1981-11-27 |
Family
ID=13037658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5680780A Pending JPS56153443A (en) | 1980-04-28 | 1980-04-28 | Page boundary display system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56153443A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60110030A (en) * | 1983-11-19 | 1985-06-15 | Canon Inc | Character processor |
JPS60189064A (en) * | 1984-03-07 | 1985-09-26 | Canon Inc | Character processor |
JPH01116870A (en) * | 1987-10-30 | 1989-05-09 | Pfu Ltd | Display control system for lower end overflow character string in character editing |
-
1980
- 1980-04-28 JP JP5680780A patent/JPS56153443A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60110030A (en) * | 1983-11-19 | 1985-06-15 | Canon Inc | Character processor |
JPH0522933B2 (en) * | 1983-11-19 | 1993-03-31 | Canon Kk | |
JPS60189064A (en) * | 1984-03-07 | 1985-09-26 | Canon Inc | Character processor |
JPH0534706B2 (en) * | 1984-03-07 | 1993-05-24 | Canon Kk | |
JPH01116870A (en) * | 1987-10-30 | 1989-05-09 | Pfu Ltd | Display control system for lower end overflow character string in character editing |
JPH0544057B2 (en) * | 1987-10-30 | 1993-07-05 | Pfu Ltd |
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