JPH04140826A - Crt controller - Google Patents
Crt controllerInfo
- Publication number
- JPH04140826A JPH04140826A JP2264405A JP26440590A JPH04140826A JP H04140826 A JPH04140826 A JP H04140826A JP 2264405 A JP2264405 A JP 2264405A JP 26440590 A JP26440590 A JP 26440590A JP H04140826 A JPH04140826 A JP H04140826A
- Authority
- JP
- Japan
- Prior art keywords
- timer
- crt
- input
- data
- 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
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Digital Computer Display Output (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
Description
【発明の詳細な説明】 特許請求の範囲 〔産業上の利用分野〕 本発明はCRT画面の焼き付き防止に関する。[Detailed description of the invention] Scope of claims [Industrial application field] The present invention relates to prevention of burn-in on CRT screens.
従来、CRT画面の焼き付き防止として、画面表示が必
要ないときにはCRT画面の表示を停止していた。Conventionally, in order to prevent burn-in on a CRT screen, the display of the CRT screen was stopped when the screen display was not necessary.
上述した従来のCRT制御装置は、CRTを利用する装
置が使用された後、次の操作が行われるまでの時間が長
い場合に、CRT画面の表示を停止するようになってい
るため、特に操作を行っていない場合には、これまでの
装置の作動状態がわからないという欠点がある。The conventional CRT control device described above is designed to stop displaying the CRT screen if it takes a long time to perform the next operation after the device using the CRT is used. If this is not done, there is a disadvantage that the previous operating state of the device cannot be known.
本発明は、データの入力を行う入力部と、前記データを
表示するCRT表示部とを有するCRT制御装置におい
て、前記入力部からのデータ入力間隔を検知する手段を
備えている。The present invention provides a CRT control device having an input section for inputting data and a CRT display section for displaying the data, and includes means for detecting data input intervals from the input section.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第1図は本発明の一実施例を示す構成図である。第1図
において、本発明のCRT制御装置はデータを入力する
入力装置1と、このデータを表示するCRT表示部2と
、入力部W1からのデータ入力間隔を検知するタイマ4
と、これらを制御する制御部3とから構成されている。FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, the CRT control device of the present invention includes an input device 1 for inputting data, a CRT display section 2 for displaying this data, and a timer 4 for detecting data input intervals from an input section W1.
and a control section 3 that controls these.
第2図は本発明の動作原理を示すタイミングチャー)−
である8第2図において、まず、入力装置1からデータ
が入力され、制御部3に入力データ信号aが送出される
と、制御部3はタイマ4に信号を送出してタイマ4をリ
セットすると共に、予め定めた時間をセットする。この
とき、入力装置1に次のデータが所定の時刻が経過して
も入力されない場合、制御部3はタイマ4をリセットて
きないため、タイマ4は制御部3にタイマ割込み78号
すを送出するにれにより、制御部3はCF(T表示部2
に対するCRT輝度信号Cをインアクティブとし、CR
T表示部2のCR1画面の輝度を#減させる。Figure 2 is a timing chart showing the operating principle of the present invention)
8 In FIG. 2, first, data is input from the input device 1 and an input data signal a is sent to the control unit 3, and the control unit 3 sends a signal to the timer 4 to reset the timer 4. At the same time, set a predetermined time. At this time, if the next data is not input to the input device 1 even after a predetermined time has elapsed, the control unit 3 will not reset the timer 4, so the timer 4 will send a timer interrupt number 78 to the control unit 3. Due to this, the control unit 3 displays the CF (T display unit 2
The CRT luminance signal C for CR is made inactive, and CR
The brightness of the CR1 screen of the T display section 2 is decreased by #.
この状態で、入力装置]にデータが入力され、制御部3
に入力データ信号aが送出されると、制御部3はcaT
m度信号CをアクティブとしてCRT表示部2のCRT
画面の輝度を元の状態に戻し、入力データの表示を行う
。In this state, data is input to the input device and the control unit 3
When input data signal a is sent to
The CRT of the CRT display section 2 with the m degree signal C active.
Return the screen brightness to its original state and display the input data.
以上説明したように本発明は、タイマを用いたことによ
り、−・定時間操作が行われなかった場合メこはCRT
画面の輝度を半減することができるという効果がある。As explained above, the present invention uses a timer, so that if no operation is performed for a fixed period of time, the CRT
This has the effect of halving the screen brightness.
第1図は本発明の一実施例を示す構成図、第2図は本発
明の動作原理を示すタイミングチャートである。
1・・・入力装置、2・・CRT表示部、3・・・制御
部、4・・タイマ、a・・入力データ信号、b・・・タ
イマ割込み信号、C・・・CRTII度信号。FIG. 1 is a configuration diagram showing an embodiment of the present invention, and FIG. 2 is a timing chart showing the operating principle of the present invention. DESCRIPTION OF SYMBOLS 1... Input device, 2... CRT display unit, 3... Control unit, 4... Timer, a... Input data signal, b... Timer interrupt signal, C... CRTII degree signal.
Claims (1)
RT表示部とを有するCRT制御装置において、前記入
力部からのデータ入力間隔を検知する手段を備え、前記
データが予め設定した時間以内に入力されない場合、前
記CRT表示部の表示面の輝度を半減させて表示させる
ことを特徴とするCRT制御装置。An input section for inputting data, and a C for displaying the data.
A CRT control device having a RT display section, further comprising means for detecting a data input interval from the input section, and halving the brightness of the display surface of the CRT display section if the data is not input within a preset time. A CRT control device characterized in that it displays images by displaying images.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2264405A JPH04140826A (en) | 1990-10-01 | 1990-10-01 | Crt controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2264405A JPH04140826A (en) | 1990-10-01 | 1990-10-01 | Crt controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04140826A true JPH04140826A (en) | 1992-05-14 |
Family
ID=17402706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2264405A Pending JPH04140826A (en) | 1990-10-01 | 1990-10-01 | Crt controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04140826A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06289963A (en) * | 1993-03-19 | 1994-10-18 | Internatl Business Mach Corp <Ibm> | Display device connected to computer system |
US5648799A (en) * | 1992-12-02 | 1997-07-15 | Elonex I.P. Holdings, Ltd. | Low-power-consumption monitor standby system |
US5821924A (en) * | 1992-09-04 | 1998-10-13 | Elonex I.P. Holdings, Ltd. | Computer peripherals low-power-consumption standby system |
-
1990
- 1990-10-01 JP JP2264405A patent/JPH04140826A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5821924A (en) * | 1992-09-04 | 1998-10-13 | Elonex I.P. Holdings, Ltd. | Computer peripherals low-power-consumption standby system |
US5648799A (en) * | 1992-12-02 | 1997-07-15 | Elonex I.P. Holdings, Ltd. | Low-power-consumption monitor standby system |
US5880719A (en) * | 1992-12-02 | 1999-03-09 | Eloney I.P. Holdings L.T.D. | Low-power-consumption monitor standby system |
JPH06289963A (en) * | 1993-03-19 | 1994-10-18 | Internatl Business Mach Corp <Ibm> | Display device connected to computer system |
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