JPS5567840A - Display unit - Google Patents
Display unitInfo
- Publication number
- JPS5567840A JPS5567840A JP14079078A JP14079078A JPS5567840A JP S5567840 A JPS5567840 A JP S5567840A JP 14079078 A JP14079078 A JP 14079078A JP 14079078 A JP14079078 A JP 14079078A JP S5567840 A JPS5567840 A JP S5567840A
- Authority
- JP
- Japan
- Prior art keywords
- processor
- flicker
- character code
- given
- 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)
Abstract
PURPOSE: To prevent the flicker of the screen occurring when the memory storing the display information is rewritten for the raster scan display of the CRT display unit or the like by securing the coincidence for the picture signal with the luminace equal to the background at the access time from the processor.
CONSTITUTION: The information of the character code equivalent to one picture frame which is given from processor 1 is stored in refresh memory 2. And the character code read out from memory 2 is converted into the luminance signal pattern through character generator 3 and then stored in shift register 4 to be sent to the CRT display part for display in synchronization with the horizontal scanning. In case an access is given from processor 1, the flicker occurs if the character code to be transferred to generator 3 is given directly. In this connection, the output of gate circuit 10 is matched forcedly to the luminance of the background via the output of process controller 9 at the access time to prevent the flicker.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14079078A JPS5567840A (en) | 1978-11-15 | 1978-11-15 | Display unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14079078A JPS5567840A (en) | 1978-11-15 | 1978-11-15 | Display unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5567840A true JPS5567840A (en) | 1980-05-22 |
Family
ID=15276794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14079078A Pending JPS5567840A (en) | 1978-11-15 | 1978-11-15 | Display unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5567840A (en) |
-
1978
- 1978-11-15 JP JP14079078A patent/JPS5567840A/en active Pending
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