KR20040107025A - Display device for having colour weakness option capability and method of controlling the same - Google Patents

Abstract

PURPOSE: An image display system having a color weakness selecting function and a method for controlling the image display system are provided to correct a color and then display an image having the corrected color when a color-weak person selects the color, to thereby allow the color-weak person to feel the color like normal people. CONSTITUTION: An image display system includes a signal input unit(11), a pre-amplifier(12), a resistance distributor(103), an OSD(On Screen Display) generator(109), a switch(104), an image processor(105), and a microcomputer(107). The signal input unit receives RGB video signals. The pre-amplifier amplifies the RGB video signals. The resistance distributor receives the amplified RGB video signals and outputs RGB video signals having different color levels according to resistance distribution. The OSD generator generates a color weakness selection menu in an OSD form. The switch selectively outputs the output signals of the resistance distribution in response to a color selected by a color-weak person with reference to the menu. The image processor processes the video signal corresponding to the color level output from the switch into a video signal displayable on a screen. The microcomputer outputs a control signal to the switch such that the switch outputs the color levels and controls a video signal corrected in response to a corresponding color level to be output.

Description

Display device for having color weakness option capability and method of controlling the same}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device, and more particularly, to an image display device having a color medicine selection function and a control method thereof so that color weak people can feel a better color when viewing the image display device.

In general, the color weakness refers to a person who feels color tone but has a weak sensitivity to color, and thus cannot distinguish similar shades clearly.

Therefore, even if it is inevitable for color blindness without color sensitivity, it is possible to watch TV on the same condition as a normal person by color correction for color weakness with less sensitivity to color.

A general video display device expresses a video signal transmitted from a broadcasting station or a video signal transmitted from a PC main body in R, G, and B colors, or adjusts and selects a color scheme according to one's taste. Only when the viewer wants to change the color will adjust the R, G, and B colors again.

Hereinafter, a configuration of a general video display device will be described with reference to the accompanying drawings.

1 is a block diagram showing the configuration of a general video display device.

As shown in FIG. 1, a general image display device includes a signal input unit 11 for receiving R, G, and B image signals, and amplifies and outputs an image signal inputted through the signal input unit 11 by a predetermined multiple. A preamplifier 12, an image processor 13 for processing the video signal output from the preamplifier 12 into a video signal displayable on the screen, and a display unit for displaying the output of the image processor 13 ( 14) and a microcomputer 15 for outputting a horizontal / vertical synchronization signal input and a control signal according to a user's request command.

The general video display device configured as described above performs signal processing to output the R, G, and B video signals input through the signal input unit 11 to the display unit 14.

At this time, the control of the output color signal is output according to the ratio of R, G, and B previously stored by the user. To adjust this, the user can adjust by controlling the tint on the main menu of the TV.

However, these color controls are randomly stored by the user's main menu selection and cannot be adjusted automatically. Especially, in the case of color weaknesses such as the above, the color difference is different from normal people depending on the set color ratio. Will feel different.

If the color weaker watching TV with the conventional TV system as described above, it would not be possible to completely feel the color that the broadcaster wanted to show to the viewer without a separate image manipulation.

Therefore, color correction is necessary for the color weaker to watch TV with better color.

The present invention has been made to solve the above problems, and when the color weak people select the corresponding color weakness according to their color weakness state, the color signal is selected and then the image signal is displayed to select the color weakness to feel the same color as normal people It is an object of the present invention to provide a video display device having a function and a control method thereof.

1 is a block diagram schematically illustrating a configuration of a general video display device.

2 is a block diagram showing the configuration of an image display device having a color weakness selection function according to the present invention;

3 is a flowchart illustrating a method of controlling an image display device having a color selection function according to the present invention.

4 is a graph showing the sensitivity characteristics of normal and color weak people

Explanation of symbols for main parts of the drawings

11: signal input unit 12: preamplifier

103: resistance divider 104: switching unit

105: image processing unit 106: display unit

107: microcomputer 108: storage unit

109: OSD generation unit

In order to achieve the above object, an image display device having a color weakness selection function includes a signal input unit for receiving R, G, and B image signals, and a preamplifier for amplifying a predetermined multiple of the input R, G, and B image signals. A video display device comprising: a resistor divider which receives an image signal amplified by the preamplifier and outputs R, G, and B image signals having different color levels due to a predetermined resistance distribution; An OSD generator for generating a selection menu in an OSD form, a switching unit for selectively outputting an output of the resistor divider according to a color weakness selected by the color weakener by referring to a menu generated by the OSD generator, and an output from the switching unit Image processing unit for processing the video signal according to the color level to be displayed on the screen, the horizontal / vertical synchronization signal input and the user's request And a microcomputer that outputs a control signal to the switching unit to output a color level to which the resistance value distributed by the resistance distribution unit is applied, and outputs a corrected image signal according to the corresponding color level. It has its features.

A control method of an image display device having a color selection function according to the present invention for achieving the above object is a control method of an image display device including a storage unit and a resistance distribution unit, when the power is turned on to indicate whether or not to set the color weakness; And if the color weakness setting is displayed, and if the user himself is a color weakness, determining whether the currently set color level is set for him or herself, and if the result is set accordingly for the user, R inputted according to the set color level. , G and B video signals are processed and displayed.

Preferably, if it is not set according to the result of the determination, determining whether a color level suitable for the user is already stored; and if the previously stored color level exists as a result of the determination, recall the pre-stored color level and then correct it accordingly. Displaying an image signal, displaying a selection menu for selecting a color level in the form of an OSD if there is no pre-stored color level as a result of the determination, and referring to the displayed selection menu for a color level suitable for oneself. The method may further include selecting, storing, storing, and displaying the image signal after correction according to the selected color level.

More preferably, the step of displaying an image signal after the color level correction includes selecting one of the red (R) color weakness, the green (G) color weakness, the blue (B) color weakness, and the red / green color weakness. It is a step of outputting and correcting a higher level value among the resistance values distributed by the distribution, and then processing and displaying the image signal accordingly.

More preferably, when the color weakness setting is not displayed or the color weakness is not displayed, the image signal is processed and displayed at a predetermined normal value.

Hereinafter, an image display device having a color weakness selection function and a control method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram showing a configuration of an image display apparatus having a color selection function according to the present invention, FIG. 3 is a flowchart showing a control method of the image display apparatus having a color selection function according to the present invention, and FIG. It is a graph showing the sensitivity characteristics of normal people and color weak people.

As shown in FIG. 2, the image display device having the color weakness selection function according to the present invention includes a signal input unit 101 for receiving R, G, and B image signals, an R input through the signal input unit 101, A pre-amplifier 102 for amplifying a predetermined multiple of the G and B video signals, and R having a different color level due to a predetermined resistance distribution by receiving the R, G and B video signals outputted through the pre-amplifier 102. And a resistance divider 103 for outputting G and B image signals, a switching unit 104 selectively outputting according to a user's request at a color level output from the resistance divider 103, and the switching unit ( An image processing unit 105 for processing an image signal corresponding to the color level output from the image 104 into a displayable image signal, a display unit 106 for displaying an image signal output from the image processing unit 105, and , Select the color selection menu for color weak The switching unit (109) to generate and display the color level to which the resistance value distributed by the resistor distribution unit (103) and the horizontal / vertical synchronization signal input and the resistance distribution unit (103) are output according to a user's request. Outputting a control signal to the 104, and a microcomputer 107 for controlling to output a video signal corrected according to the corresponding color level, and storing a color level selected by the user according to the control signal of the microcomputer 107 Storage 108.

Operation of the image display device having a color selection function according to the present invention configured as described above is as follows.

When the R, G, and B image signals are input through the signal input unit 101, the preamplifier 102 receives the input signals and amplifies them by a predetermined multiple (2 times) to convert the 2R, 2G, and 2B image signals into the resistance divider. Output to (103).

Then, the resistor divider 103 receives the 2R, 2G, and 2B image signals output from the preamplifier 102, and provides a color level (1.4R, 1.4G, 2.0G) for the color weak through a predetermined voltage distribution. Output at the color level (1.0R, 1.0G, 1.4B) for normal people.

In addition, the OSD generator 109 generates a menu for selecting a color weakness or a normal state according to the control signal of the microcomputer 107 in an OSD form.

Therefore, in the case of the R color weaker, as shown in FIG. 4B, the sensitivity characteristic of the R color is lower than that of other colors. Therefore, when the R color weaker selects the R color weakness in the OSD menu, the switching unit 104 1.4R may be selected and output from the color level output from the resistor divider 103.

In addition, as shown in (c) and (d) of FIG. 4, the G color weakness and B color weakness can be seen that the sensitivity characteristics of the color weakness of the corresponding color weakness are lower than other colors. Accordingly, 1.4G or 2.0B is selected and output from the color levels output from the resistor divider 103.

On the other hand, in the case of R, G color weak 1.4 R, 1.4G can be output at the same time by selecting the R color and G color at the same time.

Therefore, the size of the variable range according to the color level can be described with reference to the following table.

division Video signal Variable range size Output value Normal people R 0-100 R G 0-100 G B 0-100 B R color abbreviation R 0 to 137 1.4 R G 0-100 G B 0-100 B G color abbreviation R 0-100 R G 0 to 143 1.4G B 0-100 B B color abbreviation R 0-100 R G 0-100 G B 0 to 200 2B

Therefore, in the case of normal people, the R, G, and B ends are equally divided into 100 equal sizes from 100 to 100, respectively, and the variable range is set.In the case of the R color abbreviation, the output of G and B is 100 to 0-100 in size. In the case of R, however, a value obtained by dividing the size from 0 to 137 by 100 is applied to correct the R level value by increasing it.

Similarly, in the case of the G color abbreviation, R and B divide the size from 0 to 100 by 100, but in the case of G, the value obtained by dividing the size from 0 to 143 by 100 is applied, thereby increasing and correcting the G level value. In case of B color abbreviation, R, G is applied by dividing the size from 0 to 100 by 100 equals, but in case of B, it is applied by dividing the size from 0 to 200 by 100 equally, so it is corrected by increasing the B level value. .

Referring to FIG. 3, a method of correcting an image display device having a color weakness correction function according to the present invention configured as described above, first, it is determined whether a user inputs a power-on command (S101).

Subsequently, if the user inputs a power-on command, the determination result (S101) indicates whether to set the color weakness (S102).

It is determined whether or not the color medicine is set (S103).

Subsequently, when the determination result (S103), the color weakness is set, and the user himself is the color weakness, it is determined whether the currently set color level is set for the user (S104 to S105).

As a result of the determination (S105), if the current color level is set for the user, the corrected video signal is displayed according to the set color level (S106).

On the other hand, if it is determined in step S105 that the current color level is not set for the user, it is determined whether or not it is already stored (S107).

As a result of the determination (S107), if previously stored, the pre-stored color level is loaded to display the corrected image signal (S108).

In addition, if the previously stored color level does not exist (S107), the color weakness selection menu is displayed in OSD form (S109).

The color medicine corresponding to itself is selected with reference to the OSD (S110).

In addition, after correction according to the selected color weakness, the stored and image signals are displayed (S111).

On the other hand, if the determination result (S103), the color weakness is not set, or the color weakness is not, the image signal is processed and displayed at the default value (S113).

Finally, when the user inputs the power off command, the process ends (S112).

As described above, the image display device having the color correction function and the correction method according to the present invention can add a color weakness option, which is normal to the user selection portion on the OSD menu, so that the color weakness can change the color level more conveniently.

As described above, the image display device having the color correction function and the correction method according to the present invention selects a color weakness suitable for each color weakness, and accordingly expresses the color level differently, the color weakness also has a better color like a normal person. The effect is felt.

Claims (7)

In a video display device having a signal input unit for receiving an R, G, B video signal, and a preamplifier for amplifying a predetermined multiple of the input R, G, B video signal, A resistor divider which receives an image signal amplified by the preamplifier and outputs R, G, and B image signals having different color levels by a predetermined resistance distribution; An OSD generator for generating a color weakness selection menu for color weak persons in an OSD form; A switching unit for selectively outputting an output of the resistance divider according to a color weakness selected by the color weakness by referring to a menu generated by the OSD generator; An image processor which processes an image signal corresponding to a color level output from the switching unit into an image signal displayable on a screen; And, The control signal is output to the switching unit so that the horizontal / vertical synchronization signal input and the color level to which the resistance value distributed by the resistance distribution unit is applied can be output according to a user's request, and the image signal corrected according to the corresponding color level. An image display device having a color weakness selection function, characterized in that configured to include a microcomputer to control the output. The method of claim 1, And the resistor divider has a plurality of resistors connected in series at each of R, G, and B stages, and outputs different distribution values at the connection terminals of the resistors. The method of claim 1, And a storage unit for storing the color level according to the color weakness selected by the color weakness. In the control method of an image display device having a color weakness selection function comprising a storage unit, a resistance distribution unit, Displaying whether to set color weakness when powered on; If the color weakness setting is displayed and the user himself / herself is a color weakness, determining whether the currently set color level is set to be suitable for the color weakness; And, And if it is set according to the result of the determination, displaying and processing the R, G, and B video signals inputted according to the set color level, and displaying the color weakness selection function. The method of claim 4, wherein Determining whether a color level suitable for the user is stored in advance, if it is not set for the user; If the pre-stored color level exists as a result of the determination, calling up the pre-stored color level and displaying the corrected image signal accordingly; Displaying a selection menu for selecting a color level in the form of an OSD if the previously stored color level does not exist as a result of the determination; Selecting a color level suitable for the user by referring to the displayed selection menu, and correcting and storing and displaying a corresponding video signal according to the selected color level. Control method. The method of claim 4, wherein Displaying the image signal after the color level correction When any one of the red (R) color weakness, the green (G) color weakness, the blue (B) color weakness and the red / green color weakness is selected, a higher level value among the resistance values distributed by the resistance distributor is output for the corresponding color weakness. And controlling and displaying the image signal according to the correction, wherein the image display device has a color weakness selection function. The method of claim 4, wherein And if the color weakness setting is not displayed or the color weakness is not displayed, processing and displaying an image signal at a predetermined normal value.