JPS5556241A - Crt display unit - Google Patents
Crt display unitInfo
- Publication number
- JPS5556241A JPS5556241A JP12782978A JP12782978A JPS5556241A JP S5556241 A JPS5556241 A JP S5556241A JP 12782978 A JP12782978 A JP 12782978A JP 12782978 A JP12782978 A JP 12782978A JP S5556241 A JPS5556241 A JP S5556241A
- Authority
- JP
- Japan
- Prior art keywords
- pattern data
- display pattern
- brightness inversion
- outputted
- indication signal
- 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 make desired information conspicuous to an operator among many pieces of information on display, by using negative characters for it. CONSTITUTION:A brightness inversion assignment code, if residing refresh memory 1, is detected by decoder 2 to set FF3. As a result, a brightness inversion indication signal changes from a low level to a high level and is supplied to exclusive- OR gate 5. Namely, when the brightness inversion indication signal is ''0'', display pattern data is outputted as it is, but when it is ''1'', the display pattern data changes from ''0'' to ''1'' or reversely and is outputted. The display pattern data of ''1'' makes a bright point on a screen, so that a point which is normally a bright point comes off while its back consists of bright points. In this way, negative characters are displayed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12782978A JPS5556241A (en) | 1978-10-19 | 1978-10-19 | Crt display unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12782978A JPS5556241A (en) | 1978-10-19 | 1978-10-19 | Crt display unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5556241A true JPS5556241A (en) | 1980-04-24 |
Family
ID=14969686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12782978A Pending JPS5556241A (en) | 1978-10-19 | 1978-10-19 | Crt display unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5556241A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03222077A (en) * | 1990-01-26 | 1991-10-01 | Fujitsu Ltd | Contour paint-out circuit |
-
1978
- 1978-10-19 JP JP12782978A patent/JPS5556241A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03222077A (en) * | 1990-01-26 | 1991-10-01 | Fujitsu Ltd | Contour paint-out circuit |
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