JPH06118897A - Automatic brightness correction device for laptop display device - Google Patents

Abstract

(57) [Abstract] [Purpose] An operator who operates a laptop computer by automatically correcting the brightness according to the brightness of the surrounding environment and automatically changing the brightness according to the change of the angle of the display device. It saves time and effort for brightness correction, improves work efficiency, and reduces eye strain. A brightness is detected by a display brightness detector 2, this value is compared by a brightness comparator 4 with a value set by a brightness initial value input device 3, and the brightness is corrected by a brightness corrector 5 based on this value. to correct. Further, the angle of the neck of the display is detected, and the angle comparator 8 compares the angle of the neck with the reference angle. Next, the brightness is obtained based on this angle difference, and information is given to the brightness comparator 10. Brightness comparator 1
For 0, the information of the brightness setting value storage 6 and the information of the brightness calculator 7 are compared, the result is sent to the brightness corrector 5, and the brightness corrector 5 determines the correction value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic brightness correction device capable of automatically setting the brightness of a laptop display device to an optimum value.

[0002]

2. Description of the Related Art Generally, a laptop computer has a main body section having a keyboard and an arithmetic section for inputting, a numerical value,
And a display device for displaying characters and graphs. The data input from the keyboard of the main unit is
Processing is performed by the arithmetic unit in the main body, and the processing procedure and the arithmetic result are displayed on the display.

In this display device, it is necessary to adjust the brightness so that the data displayed on it can be seen most easily according to the brightness of the environment in which the laptop computer is placed. Therefore, the brightness is adjusted according to the environment before operating the laptop computer, and if the brightness of the environment changes during the operation, the brightness is changed again to adapt to the brightness. .

In addition, when using a laptop computer that can be easily carried, the brightness is adjusted each time the laptop computer is used according to the brightness of the environment of the place where the laptop computer is installed.

Further, when the angle of the display device is changed as necessary, it is necessary to adjust the brightness according to the angle of the display device separately from the change in the brightness of the environment.

[0006]

However, in the above-mentioned conventional laptop computer, the brightness cannot be originally adjusted, or the environment in which the laptop computer is placed even if the brightness is adjustable. The brightness had to be adjusted before and during use according to the brightness of the. Moreover, even in a portable laptop computer, the brightness had to be adjusted each time according to the brightness of the environment in which the computer was placed.

Also, when the angle of the display device is changed according to the need of work, it is necessary to adjust the brightness each time, and such brightness adjustment must be performed manually, which is troublesome in operating the computer. There was a problem of this. This is particularly noticeable when using a liquid crystal display.

Further, when the work is continued with an inappropriate brightness without adjusting the brightness, the eyes are tired and the work efficiency is lowered.

In view of the above circumstances, the present invention automatically corrects the brightness according to the brightness of the environment in which the laptop computer is placed, and at the same time automatically changes the brightness according to the change in the angle of the display device. SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic brightness correction device for a laptop computer, which saves labor for brightness correction of an operator who operates the laptop computer, improves work efficiency, and can reduce eye strain.

[0010]

In order to achieve the above object, the present invention provides a laptop display device capable of displaying data input from a keyboard of a main body and changing the angle with respect to the main body. A brightness detection unit that detects the brightness of the display device in the external environment in which the laptop display device is arranged,
A first brightness comparison unit that calculates a corrected brightness by comparing a preset brightness initial value with a brightness detection value detected by the brightness detection unit, and the main body unit of the laptop display device. An angle detection unit that detects an angle, and a brightness calculation unit that calculates brightness according to the angle detection value output from the angle detection unit when the angle of the display device is changed from a preset angle reference value. When,
A second brightness comparing unit for calculating the corrected brightness by comparing the corrected brightness of the first brightness comparing unit with the brightness of the brightness calculating unit; and the first brightness comparing unit or the second brightness comparing unit. And a brightness correction unit that corrects the brightness of the laptop display device based on the brightness calculated by the brightness comparison unit.

[0011]

According to the above structure, the brightness is detected by the brightness detecting section, this value is compared with the initial brightness value by the first brightness comparing section, and the brightness is corrected by the brightness correcting section based on this value.

Also, the angle of the neck of the display is detected,
When the angle is changed from the preset angle reference value, the brightness is corrected based on this changed angle.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram of an automatic brightness correction apparatus for a laptop computer according to the present invention.

This automatic brightness correction device is connected to a laptop display device 1 and has a display brightness detector 2 for detecting the brightness thereof, a brightness initial value input device 3 for inputting an initial value of the brightness, and the brightness initial value. The first brightness comparator 4 for comparing the brightness initial value set by the value input device 3 and the brightness detection value of the display brightness detector 2 to set the correction value, and the first brightness comparator 4 A brightness corrector 5 that corrects the brightness based on the correction value, a brightness set value storage 6 that stores the information from the first brightness comparator 4, and an angle of the neck of the display device 1 for laptop (with the main body). Angle of the display device, which is connected to the display angle detector 7 and stores the angle reference value to change the angle of the neck of the display device. An angle comparator 8 for calculating an angle difference by comparing with a quasi value, a brightness calculator 9 for calculating a brightness correction value based on the angle difference information output from the angle comparator 8, and a brightness set value storage device. 6 and the brightness calculator 9 and compares the information of the brightness setting value storage 6 and the brightness calculator 9 with each other, and gives the resulting information to the brightness corrector 5 to determine the correction value. And a comparator 10.

Next, the above-mentioned configuration is applied to each component.
It will be described in more detail.

The display brightness detector 2 detects the initial brightness of the display device under the control of the controller unit inside the device display. This brightness detection is achieved by providing a detection device on the surface of the display panel. This detection device, for example, adheres a thin film filter to the entire surface of the display panel, and measures the brightness at five points in total at the four corners of the filter and the center of the filter. The average of the measured luminances at the five points is calculated and the obtained value is used as the luminance.

Next, the brightness comparator 4 compares the brightness of the display panel surface obtained by the display brightness detector 2 with the initial value of the brightness. For example, the initial value set in the brightness initial value input device 3 is 30 lux. Luminance detector 2 provided in laptop display device 1
If the detected value is 25 lux, the brightness comparator 4 calculates the magnitude of the input value based on the initial value of 30 lux. A low value is obtained. This value is sent to the brightness corrector 5 and the brightness set value storage 6 connected to the brightness comparator 4, corrected by the brightness corrector 5, and stored in the brightness set value storage 6.

The brightness corrector 5 receives the correction value from the brightness comparator 4 and corrects the brightness according to the value. For example, as described above, when the brightness comparator 4 sends out a value lower by 5 lux, the brightness corrector 5 adjusts the voltage of the display controller by 5 lux of the brightness correction value. Regarding the voltage change at this time, the voltage change is calculated inside the brightness corrector 5, and the calculation is performed when the brightness is increased by, for example, 5 lux according to the correction value of the brightness comparator 4. This is done by applying a voltage of 0.1V to the display controller.

Next, a method of changing the brightness of the display according to the angle of the display will be described.

A display angle detector 7 is connected to the display device 1 to detect the angle of the display. In the measurement of the display angle, the angle when the display is closed is set to 0, and the angle when the display is opened is detected based on the angle. The angle detection is achieved, for example, by providing the display device with a movement amount detection device that detects the movement amount of the mechanical portion of the neck of the display.

Next, the angle comparator 8 connected to the display angle detector 7 compares the reference value with the value of the angle at which the display is opened. As the reference value, the reference value of the display is set at the same time as the reference value of the brightness when the reference value of the brightness is input by the brightness initial value input device 2. For example, if the most frequently used angle is 100 degrees, the angle is used as a reference value and compared with the actually opened angle detected by the display angle detector 7 to find the difference in the angle.

This information is sent to the brightness calculator 9 connected to the angle comparator 8 in order to calculate the brightness from the angle difference from the reference value calculated by the angle comparator 8. The brightness calculator 9 adds the brightness corresponding to the preset angle difference based on the value calculated by the angle comparator. For example, if it is tilted in the direction away from the operator who operates face-to-face, it becomes brighter by 1 lux per degree, and conversely if it is tilted in the direction that approaches the operator who operates face-to-face. 1 at a time
Lux is set so that it becomes dark, and the value calculated from the reference value of luminance is added. This value is sent to the second brightness comparator 10, is compared with the value stored in the brightness setting value storage 6, and the brightness is corrected by the brightness corrector 5 according to the output value.

Next, the operation of this embodiment will be described.

First, a display device 1 for a laptop
In, the display brightness detector 2 provided in the display device 1 detects the brightness of the display. This brightness value is sent to the brightness comparator 4.

Next, the brightness comparator 4 compares the brightness input by the brightness initial value input device 3 before the operation with the brightness detected by the brightness detector 2. For example,
If the initial value is 30 and the value measured by the display brightness detector is 25 lux, a value lower by 5 lux is obtained. This value is sent to the brightness corrector 5. The brightness correction value is
The brightness of the display is corrected based on this value. As in the above example, the brightness corrector 5 applies a voltage corresponding to the brightness to the display controller in order to perform the control to brighten it by 5 lux. In this case, for example, a voltage of 0.1 V is applied to 5 lux. Further, the value obtained by the brightness comparator 4 is sent to the brightness setting value storage unit 6, and the brightness setting value storage unit 6 stores the set value.

The display brightness detector 2 detects the brightness, the brightness comparator 4 compares the value with the value set by the brightness initial value input unit 3, and the brightness corrector 5 determines the brightness based on this value. The correction procedure is shown by the solid line in FIG.

Next, the neck angle is detected by the display angle detector 7 which detects the neck angle of the display. The angle detector 7 calculates the actual angle, for example, by setting the angle when the display is closed as the reference value 0. When the current angle is 110 degrees compared to the reference value 0, the value of 110 degrees is sent to the angle comparator 8. The angle comparator 8 compares this value with the initial reference value input in advance from the brightness initial value input device 2. Initial reference value is 1
When the angle is 00 degrees, the angle detector 7 is operated by the angle comparator 8.
The angle difference 10 is calculated by comparing with the value of 110 degrees detected in. This value is sent to the brightness calculator 9.

If the brightness calculator 9 is set to brighten by 1 lux per degree, for example, 10 luxes are brightened for an angle difference of 10 degrees. This value is sent to the second brightness comparator 10. The second brightness comparator 10 compares this value sent from the brightness calculator 9 with the value stored in the brightness setting value storage 6, calculates the difference in brightness, and uses that value as the brightness corrector. Send to 5. The brightness corrector 5 calculates the brightness of the display device 1 based on the value and determines the final brightness value of the display to be adjusted.

The brightness adjustment by angle detection of this display device is shown by the dotted line in FIG.

[0031]

As described above, according to the present invention, since the brightness of the display can be automatically corrected in the laptop computer, the labor of the user can be saved and the working efficiency can be improved. It is possible to prevent adverse effects on the eyes due to long-term use.

Further, particularly in a portable laptop computer, it is not necessary to set the brightness each time according to the set environment, so that the working efficiency is improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of an automatic brightness correction device for a laptop display device according to the present invention.

[Explanation of symbols]

 1 Display Device for Laptop 2 Display Brightness Detector 3 Brightness Initial Value Input Device 4 First Brightness Comparator 5 Brightness Corrector 6 Brightness Setting Value Storage 7 Display Angle Detector 8 Angle Comparator 9 Brightness Detector 10 2nd Brightness comparator

Claims (1)

[Claims] 1. A display device for a laptop capable of displaying data and the like input from a keyboard of the main body and changing an angle with respect to the main body, the display device in an external environment in which the display device for the laptop is arranged. A luminance detection unit that detects the luminance of the first luminance comparison unit, a first luminance comparison unit that calculates a corrected luminance by comparing a preset luminance initial value and the luminance detection value detected by the luminance detection unit, An angle detection unit that detects an angle of the display device for a laptop with respect to the main body unit, and an angle detection value output from the angle detection unit when the angle of the display device is changed from a preset angle reference value. And a luminance calculation unit that calculates the luminance according to the above, and the corrected luminance of the first luminance comparison unit and the luminance of the luminance calculation unit are compared. A second brightness comparison unit that calculates the brightness that has been recorrected, and corrects the brightness of the laptop display device based on the brightness calculated by the first brightness comparison unit or the second brightness comparison unit. An automatic brightness correction device for a display device for a laptop, comprising: a brightness correction unit.