JPS5578335A - Crt display unit - Google Patents
Crt display unitInfo
- Publication number
- JPS5578335A JPS5578335A JP15195978A JP15195978A JPS5578335A JP S5578335 A JPS5578335 A JP S5578335A JP 15195978 A JP15195978 A JP 15195978A JP 15195978 A JP15195978 A JP 15195978A JP S5578335 A JPS5578335 A JP S5578335A
- Authority
- JP
- Japan
- Prior art keywords
- display
- information
- memory
- crt
- register
- 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 move a screen in an arbitrary direction smoothly at a high speed and display information by using a shift signal generator, etc., of a joy stick, etc., while displaying a part of a large picture such as a map onto the CRT display equipment. CONSTITUTION:Display information is output from computer 10 to CRT controller 20 through I/O interface 11, and data information and display coordinate information of display information are input to CRT memory 22 and coordinate register 28 respectively through display controller 21, and memory scanner 23 takes out contents of memory 22 while referring to register 28, and information is displayed on CRT display equipment 30 through pattern generation circuit 24 and video signal generation circuit 25 according to the taken-out code. When a part of memory 22 to be displayed is input from shift signal generator 40 to register 28 through control circuit 27, it is compared with coordiante values of the upper limit and the lower limit by comparator circuit 29, and an interrupt signal is generated for computer 10 when it exceeds limits.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15195978A JPS5578335A (en) | 1978-12-11 | 1978-12-11 | Crt display unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15195978A JPS5578335A (en) | 1978-12-11 | 1978-12-11 | Crt display unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5578335A true JPS5578335A (en) | 1980-06-12 |
Family
ID=15529943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15195978A Pending JPS5578335A (en) | 1978-12-11 | 1978-12-11 | Crt display unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5578335A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5073771A (en) * | 1988-03-02 | 1991-12-17 | Hitachi, Ltd. | Control method of zooming screen |
-
1978
- 1978-12-11 JP JP15195978A patent/JPS5578335A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5073771A (en) * | 1988-03-02 | 1991-12-17 | Hitachi, Ltd. | Control method of zooming screen |
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