JPH05317522A - Computer game device - Google Patents

Abstract

PURPOSE:To provide a burning preventing means for a CRT display by which a power source is not disconnected erroneously in the computer game device. CONSTITUTION:In the computer game device provided with a CRT display device, a luminance control means which can control program is provided between the display and the computer, and when there is no input for a prescribed time or above, luminance of the display is lowered stepwise to a prescribed luminance.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a computer game device using a CRT display.

[0002]

C used in a computer game machine
When the same image is displayed on the RT display device for a long time, the fluorescent substance as a light emitting body deteriorates, causing a so-called screen burning phenomenon.

Therefore, in a general computer device, C is used.
When the RT display is used, the same screen is displayed for a certain period of time, and when there is no key input, the screen display is automatically turned off to prevent burn-in.

In addition to the method of turning off the image display, there is a method of displaying a moving image to prevent the image sticking.

Computer game devices generally do not have such CRT burn-in prevention means, but it is possible to incorporate such burn-in prevention means.

[0006]

The CRT screen image sticking prevention method as described above has almost satisfactory performance in normal computer use. However, in a computer device used under special conditions such as a computer game device, these conventional CRT image sticking prevention methods may not be sufficient.

For example, a computer game machine is often used by children, and often leaves a seat with a power source turned on.
However, if you introduce a blackout function to turn off the screen display, the screen will disappear even if it is temporary, and you will be mistaken for the game console being switched off, others will turn off the computer, or the previous play state. You may forget to switch off / on the game console again.

For this reason, it is necessary to restart the progress of the game which has progressed halfway from the beginning.

As described above, the blackout function is a CRT.
Although it is satisfactory in terms of protection, there is a point that it is not desirable as a function of a device handled by children such as a computer game device.

Further, if a method of displaying a moving image is used, the number of accidents in which the power is turned off is smaller than that in the case of the blackout function, but since it is not known what kind of game is being played, it is still possible for an accident to occur. The sex remains. SUMMARY OF THE INVENTION It is an object of the present invention to provide a CRT image sticking preventing means for a computer game device which does not accidentally turn off the power.

[0011]

[Means for Solving the Problems] The reason why the CRT display burns is that the same image is displayed for a long time.
The stronger the light emission of the phosphor, the faster the burn-in speed. Therefore, in the present invention, a means for lowering the brightness by using a fader is adopted instead of suddenly erasing the screen.

Therefore, as shown in FIG. 1, a fader whose brightness can be controlled by a program is provided as C.
Place it between RT and VRAM (screen data),
Directly control the brightness.

The brightness adjustment by the fader is performed by CPU control, that is, program control. Therefore, by using this function, when the same screen is continuously displayed and no key is input, the fader is adjusted so that the brightness is lowered by the program after a certain period of time.

The decrease in the brightness of the CRT screen lengthens the time until the image sticking phenomenon occurs, and the image sticking can be substantially prevented, and the original image can be viewed although the brightness is decreased. You can prevent accidentally turning off the power while playing the game.

In the above description, the case where burn-in is prevented by reducing the brightness all at once is shown, but since the fader can be controlled by a program, the brightness is gradually decreased at regular intervals to finally obtain a safe brightness. A way to go is also possible.

Further, when a long interruption time has passed,
In some cases, the CRT display can be set to be completely turned off.

[0017]

EXAMPLES Examples of the apparatus of the present invention will be described below. When the same screen is displayed and no key is input, the brightness is first reduced by 50% after 5 minutes, and then decreased by 10% every 3 minutes.

When the brightness reaches 10% of the maximum brightness, the state is maintained for a while. The screen is erased (blacked out) at the end when one hour has passed from the beginning.

When there is a key input or the state of the screen is changed, the screen display is returned to the initial brightness at any time.

The above processing flow is shown in FIG. This process is an interrupt routine that is executed by using a time interrupt. Therefore, it is assumed that the same screen display and no key input has already taken for 5 minutes before jumping into this routine.

<3 minutes elapsed time? > Is the elapsed time after the process of reducing the brightness. Although the flow chart does not describe the process of time management around this, it must be taken into consideration in actual programming.

<1 hour elapsed? > Is the elapsed time after jumping into this routine. In this process, if left unattended for 1 hour or more, blackout occurs. However, if this judgment and the process below it are deleted, the initial brightness of 1
The screen freezes at 0%. Whether it should be completely erased depends on the application being handled.

[0023]

According to the computer game device of the present invention, it is possible to prevent burn-in of the CRT display due to the continuous display of the same screen, and it is possible to see an image with reduced brightness. This has the effect of preventing accidents when the power is turned off.

Further, the screen display of the present invention can be effectively used in general computer devices other than computer game devices. For example, telephone calls and visitors are often forced to suspend work for a short time.
In such a case, the same screen is displayed for a long time, which is usually about 10 minutes or 20 minutes, though it is usually.

When the power of the computer is turned off, the processing contents up to now must be backed up. In addition, if I had to return to my seat and resume work, it would take time to start up the system.

Therefore, when the user leaves the seat for a short time, he / she must leave the seat with the power of the computer on. You may turn off only the display to prevent burning, but it is unlikely that anyone will leave your seat with the display turned off, as it may cause other people to turn off the terminal or computer. .. This risk is the same for blackouts.

This danger is prevented and also the burning is prevented. Further, since the screen is displayed while it is a slender screen, there is an advantage that when the user returns to the seat, he / she can immediately know which state he is in.

[Brief description of drawings]

FIG. 1 is a layout diagram of faders.

FIG. 2 is a flowchart of a brightness attenuation routine.

Claims (1)

[Claims] 1. A computer game device equipped with a CRT display device is provided with programmable brightness control means between the display and a computer, and when no input is made for a certain period of time, the brightness of the display is gradually increased to a predetermined brightness. A computer game device comprising means for dropping.