JPS6444485A - Display device - Google Patents
Display deviceInfo
- Publication number
- JPS6444485A JPS6444485A JP62201113A JP20111387A JPS6444485A JP S6444485 A JPS6444485 A JP S6444485A JP 62201113 A JP62201113 A JP 62201113A JP 20111387 A JP20111387 A JP 20111387A JP S6444485 A JPS6444485 A JP S6444485A
- Authority
- JP
- Japan
- Prior art keywords
- luminance
- tube
- display tube
- control part
- control
- 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
- Controls And Circuits For Display Device (AREA)
Abstract
PURPOSE: To extend the service life of a display tube by providing the display device with a luminance control part for optionally controlling the luminance of a screen and a luminance setting part for setting up the luminance to specific intensity and changing the luminance of the display tube in a power supply ON state at the time of using it and at the time of stopping its use. CONSTITUTION: The display tube 4 displays characters, graphics, etc., based upon an instruction from a control part 2 and its luminance is properly controlled by the luminance control part 3 by the operation of a normal control 5. When the luminance setting part 1 is operated, a switch is turned on and a signal is outputted to the controlling part 3. The controlling part 3 generates a command for displaying a picture by previously set luminance different from the luminance controlled by the control 5 and the control part 2 receiving the command reduces the luminance of the tube 4. When the switch is fixed on an operator's chair or the like, the luminance of the display tube 4 is increased only when the operator exists, so that the service life of the tube 4 can be extended.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62201113A JPS6444485A (en) | 1987-08-12 | 1987-08-12 | Display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62201113A JPS6444485A (en) | 1987-08-12 | 1987-08-12 | Display device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6444485A true JPS6444485A (en) | 1989-02-16 |
Family
ID=16435617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62201113A Pending JPS6444485A (en) | 1987-08-12 | 1987-08-12 | Display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6444485A (en) |
-
1987
- 1987-08-12 JP JP62201113A patent/JPS6444485A/en active Pending
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