JP2002055671A - Color display system and color display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve discriminative characteristics of a display data part having discriminative priority for the color-challenged person. SOLUTION: A classifying means 1 for classifying the classification of display data classifies inputted display data 11 into display data 12 which are not subjected to color conversion and display data 13 subjected to color conversion. A color converter 3 converts a display color, which is hard to discriminate, into a display color which is easy to discriminate by using the color vision data of a color conversion table 2 about the display data 13, having discriminative priority subjected to color conversion. The display data combining part 4 combines the display data 12 which are not subjected to color conversion and display data 14 subjected to color conversion and converts them into video presentation data 15 to display them on a color display panel 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color display system and a color display method for a color blind person.

[0002]

2. Description of the Related Art In recent years, in portable terminal devices such as portable telephones and portable information terminals, color liquid crystal displays and the like have been used in place of conventional black and white or gray scale display panels for the purpose of improving user operability. A color display panel is used.

Since the hue of these color display panels is statistically determined from the visual characteristics of general healthy persons, it is difficult for persons with color vision impairment such as color blindness or color weakness to discriminate, and it is difficult to distinguish between black and white or black and white. There is a problem that the operability is rather reduced as compared with the gray scale display panel.

FIG. 10 shows a conventional color display system for a color vision impaired person disclosed in, for example, JP-A-8-16129 or JP-A-11-175050. A function is provided to substitute or convert a display color that is difficult for a user to identify with another display color.

In FIG. 10, 2 is a color conversion table for storing predetermined color vision data, and 3 is display data 1
1 and input the display data 11 using the color conversion table 2.
And 5, a color display panel for inputting video display data 15 output from the color conversion unit 3 and performing color display.

Next, the operation will be described. The color conversion unit 3 substitutes or converts a display color that is difficult for a color-blind person to identify in the input display data 11 into a display color that is easy to identify based on the color-vision data stored in the color conversion table 2. . Then, the video display data 15 substituted or converted into a display color that is easy to identify is output on the color display panel 5 and displayed.

As described above, in the input display data 11, a specific display color that is difficult for a color-blind person to identify is changed to a display color that is easy to identify regardless of the display content and the use environment of the portable terminal device. It is uniquely substituted or converted.

[0008] Here, looking at the contents displayed on the color display panel, there are a user interface portion such as buttons and menus, which are operated by the user, and an image data portion such as a photograph or a movie. Normally, they are combined and displayed on the color display panel at one time, but the requirements for color conversion processing for both are different.

That is, it is important that the user interface portion to be operated by the user is easy to identify, and it is required for a user with color vision impairment to convert the display color into an easily identifiable display color. Can be Hereinafter, the display data having such a request will be referred to as display data with priority on distinctiveness.

On the other hand, it is important that an image data portion such as a photograph is usually displayed in a display color close to the color of a real object. Conversion to a display color that is easy to identify is not required. Conversely, the appearance of the real object is different from the appearance on the display panel where the display color is converted or replaced, which is rather inconvenient. Hereinafter, the display data having such a request is referred to as display data with priority on reproducibility.

[0011]

As described above, the conventional color display system for color blind people converts display colors uniformly regardless of the displayed contents, so that the display data portion undesired by the user is not required. For example, there has been a problem that even display data with priority on reproducibility such as a photograph is converted.

Further, a conventional color display system for a color-blind person is a stationary type O such as a workstation or a personal computer.
Since it is intended for the A-apparatus, no consideration is given to the influence of the use environment of the device, such as indoors or outdoors, on the distinctiveness of the display panel, and there is a problem that it cannot be applied to a portable terminal device whose use environment changes.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is intended for users with color vision impairment.
It is an object of the present invention to provide a color display system and a color display method for converting only the display data portion with priority on distinction among display contents displayed on a color display panel into a display color which is easy to identify and displaying.

[0014] In addition, corresponding to a device that is used while moving outdoors or indoors, such as a portable terminal device, a user with color vision impairment is converted into a display color that is easily identified according to the illuminance of the use environment. It is an object of the present invention to obtain a color display system and a color display method.

[0015]

A color display system according to the present invention is provided with a display data type classifying means for inputting display data and classifying the display data into color-converted display data and color-converted display data. A color conversion table for storing data and display colors that are difficult for a user with a visual impairment to identify among color-converted display data classified by the display data type classification unit are stored in the color conversion table. A color conversion unit that converts the display data into color that can be easily identified using the color vision data and outputs the color-converted display data, display data that is not color-converted classified by the display data classification unit, and output by the color conversion unit. A display data synthesizing unit for synthesizing the color-converted display data and converting it into video display data, and displaying the video display data converted by the display data synthesizing unit on a screen That is those with a color display panel.

In the color display system according to the present invention, the display data classification means includes a user interface part for inputting display data expressed in a description language and displaying labels and buttons on the screen of the color display panel. The display data is classified as display data to be color-converted, and the display data of an image data portion for displaying a photograph or the like on the screen of the color display panel is classified as display data not to be color-converted.

[0017] In the color display system according to the present invention, the display data type classifying means converts the input display data into the display data of the image data portion or the display data of the image data portion based on whether or not the description content of the display data refers to an external file. It is classified into display data of a user interface part.

[0018] In the color display system according to the present invention, the display data classification means classifies the input display data into display data of an image data portion or display data of a user interface portion according to the format of the external file referred to. Things.

In the color display system according to the present invention, the display data classification means converts the input display data into the display data of the image data portion or the display data of the user interface portion according to the number of colors used by the external file referred to. It is classified into display data.

In the color display system according to the present invention, when the external illuminance is darker than a prescribed value, the display data classification means classifies the display data into color-converted display data and color-converted display data.

According to the color display method of the present invention, a first step of inputting display data and classifying the display data into color-converted display data and color-converted display data is provided. A second step of converting display colors that are difficult for the user to identify to display colors that are easy to identify, and outputting color-converted display data; combining the display data without color conversion with the display data with color conversion; And a third step of converting the video display data into video display data, and a fourth step of displaying the converted video display data on a screen.

The color display method according to the present invention performs the first step when the external illuminance is darker than a specified value.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is a block diagram showing a configuration of a color display system according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 1 denotes a display data classification unit for classifying input display data 11 into display data 12 not subjected to color conversion and display data 13 subjected to color conversion. The display data 11 is stored in a storage unit (not shown) inside the portable terminal device.
Or downloaded from a network connected to the portable terminal device.

Reference numeral 2 denotes a color conversion table for storing predetermined color vision data. The color conversion table 2 is used to convert a display color that is difficult to visually recognize and that constitutes the input display data 11 into another display color that is more easily visible. Is stored. For example, a red-purple color that is hardly perceived and a yellow color that is easily displayed are stored in pairs. 3 is a color conversion table 2
Is a color conversion unit that converts a display color that is difficult for a user with color vision impairment to identify to a display color that is easy to identify and outputs the color-converted display data 14.

Reference numeral 4 denotes a combination of the display data 12 that is not subjected to color conversion and the display data 14 after color conversion, and
Reference numeral 5 denotes a color display panel for inputting video display data 15 output from the display data synthesizing unit 4 and performing color display.

FIG. 2 shows HTML expressed in a description language.
(Hypertext Markup Language)
e) A diagram showing an example of the configuration of the display data 11 of the file. In the figure, reference numeral 21 denotes a label display data portion for displaying the label “display message” on the screen of the color display panel 5; A photo display data portion for displaying a photo on the screen of the color display panel 5 is 2
Reference numeral 3 denotes a button display data portion for displaying two buttons on the screen of the color display panel 5.

The label display data portion 21 and the button display data portion 23 are user interface portions to be operated by the user, and are display data with priority on discrimination, and the photo display data portion 22 is an image such as a photograph. This is display data with priority given to reproducibility in the data portion.

FIG. 3 is a diagram showing an example in which the display data 11 shown in FIG. 2 is displayed on the color display panel 5. 2, reference numeral 31 denotes a label text displayed on the color display panel 5, a display specified by the label display data 21 in FIG. 2, and 32 denotes a photograph displayed on the color display panel 5. Reference numeral 33 denotes a button displayed on the color display panel 5, which is a display specified by the button display data 23 in FIG.

Next, the operation will be described. FIG. 4 is a diagram showing a specification table according to Embodiment 1 of the present invention. Here, the display data 11 shown in FIG. label,
A description will be given of a case where the user interface portion such as a button performs color conversion to give priority to discrimination, and the image data portion such as a photograph gives priority to reproducibility without performing color conversion to obtain the display shown in FIG. I do.

FIG. 5 is a flowchart showing a process of classifying display data and performing color conversion according to the first embodiment of the present invention. In step ST1, via a storage unit inside the portable terminal device or a network to which the portable terminal device is connected, HTML in a description language format shown in FIG.
The display data 11 of the file is input to the display data classification unit 1, and the display data classification unit 1 reads the input display data 11. Here, the display data 11 in the form of the description language shown in FIG. 2 is sequentially read from above the list. That is, the label display data 21 is read first.

In step ST2, the display data classification unit 1 determines whether the label display data 21 refers to an external file other than the HTML file. This determination is made by detecting a predetermined tag that needs to refer to an external file such as img in the HTML file. In the description content of the label display data 21, i
Since there is no predetermined tag for referring to an external file such as mg and the label text to be displayed directly is specified, the display data classification unit 1 determines that the label display data 21 is a user interface part other than a photograph or a movie. Display data 13 for determining and color-converting the label display data 21
And outputs it to the color conversion unit 3.

In step ST3, the color conversion unit 3
It is determined whether or not the label display data 21 includes a red-purple portion which is a display color that is difficult for a visually impaired user to identify. The part is converted to yellow, which is a display color that is easy to identify. At this time, the color conversion unit 3 acquires from the color conversion table 2 a yellow color which is a display color which is easy to identify and a red-violet portion which is a display color which is difficult to identify and which is a target of color conversion. If there is no red-purple part in step ST3, the process proceeds to step ST5.

In step ST5, the color conversion section 3
It is determined whether or not the label display data 21 has a green portion which is a display color similarly difficult for a visually impaired user to identify,
If there is a green portion, in step ST6, the color conversion section 3 converts the green portion into blue, which is a display color that is easy to identify. At this time, the color conversion unit 3 acquires, from the color conversion table 2, a blue color, which is a display color that is easy to be distinguished from a green portion, which is a display color that is difficult to distinguish, which is a target of color conversion. If there is no green portion in step ST5, the process proceeds to step ST7. The color conversion unit 3 outputs the label display data 21, for which the processing of steps ST3 to ST6 has been completed, to the display data synthesis unit 4 as the color-converted display data 14.

In step ST7, it is determined whether the classification and color conversion of all the display data 11 have been completed.
In the example of the display data 11 shown in FIG. 2, since the processing has not been completed yet, the process returns to step ST1, and the display data classification unit 1 reads the next photo display data 22.

In step ST2, the display data classification unit 1 determines whether the picture display data 22 refers to an external file. In the description content of the photo display data 22, the external file "colorpic"
t. In step ST8, the display data type classification unit 1 refers to the external file “color”.
pict. Open jpg.

In step ST9, the display data classification unit 1 determines whether the file format of the external file is a photograph format. In this example, the display data classification unit 1 determines that the display format is the photo format because it is a JPEG format generally used for a photo, and converts the photo display data 22 into the display data 12 without color conversion.
And the process proceeds to step ST7.

If it is determined in step ST9 that the file format of the external file is not the photograph format, in step ST10, the display data classification unit 1 determines whether the file format of the external file is the movie format. Make a decision. If the movie format,
The process proceeds to step ST7 without performing the color conversion process. If the data is not in the movie format, it is determined that the read data is not the display data with priority on reproducibility such as a photograph or a movie, and the color data is determined in steps ST3 to ST6. Converter 3
Converts a used display color that is difficult to identify into a display color that is easy to identify.

In step ST7, it is determined whether the classification and color conversion of all the display data 11 have been completed.
In the example of the display data 11 shown in FIG. 2, since the processing has not been completed yet, the process returns to step ST1, and the display data classification unit 1 reads the next button display data 23.

In step ST2, the display data classification unit 1 determines whether the button display data 23 refers to an external file. In the description content of the button display data 23, since there is no predetermined tag referring to an external file such as img, it is determined that the button display data 23 is a user interface portion, and the display data 13 for color-converting the button display data 23 is displayed.
And outputs it to the color conversion unit 3. In steps ST3 to ST6, the color conversion section 3 performs color conversion of the button display data 23 in the same manner as the label display data 21, and outputs the button display data 23 to the display data synthesis section 4 as color-converted display data 14.

In step ST7, the display data 11
If the classification and conversion processing has been completed, a series of processing shown in FIG. 5 ends.

The display data synthesizing unit 4 includes the photograph display data 22 which is the display data 12 without color conversion output from the display data classification unit 1 and the color converted display data 14 which is output from the color conversion unit 3. The label display data 21 and the button display data 23 are combined and converted into video display data 15. The color display panel 5 receives the video display data 15 output from the display data synthesizing unit 4 and performs the color display shown in FIG.

As described above, according to the first embodiment, since the color conversion processing is performed according to the type of the display data 11, the discrimination of the display required for the operation is improved and the reproduction is performed. The effect is that the image data can be displayed without affecting the display of the image data in which the importance is important.

Further, according to the first embodiment, since only the portion requiring distinctiveness is selected and the color conversion is performed, the display data 11 is compared with the case where all the display data 11 are subjected to the color conversion.
Since the classification process of the display data is a simple process as compared with the color conversion process, an effect that the entire processing time can be reduced can be obtained.

Embodiment 2 The configuration of the color display system according to the second embodiment is the same as that of the first embodiment shown in FIG. In the first embodiment, whether an external file is to be subjected to color conversion is classified by determining whether the format of the external file is display data such as a photograph or a movie.
In the second embodiment, display data is classified by checking the number of colors used by an external file.

Next, the operation will be described. FIG. 6 is a flowchart showing the classification and color conversion processing of display data according to the second embodiment of the present invention. The processing of steps ST1 to ST8 in FIG. 6 is the same as the processing of steps ST1 to ST8 shown in FIG.

After the external file is opened in step ST8 of FIG. 6, in step ST21, the display data classification unit 1 calculates the number of colors used in the external file. Generally, in image data, a field indicating the number of colors used is prepared in a header portion of a file.

In step ST22, the display data classification unit 1 determines whether the number of colors exceeds a specified value. Generally, an image data portion such as a photograph or a movie has 25 parts.
Six or more colors are used. On the other hand, a user interface portion related to a display operation is often configured with 16 or less colors. Therefore, here, the specified value is set to 256 colors, and 25
An external file using more than six colors is determined to be an image data portion such as a photograph or movie, and 256
An external file using the number of colors equal to or less than the color is determined as a user interface portion related to the display operation.

As a result of the determination in step ST22, if the external file uses more than 256 colors, the display data classification unit 1 displays the read display data portion as the display data 12 without color conversion. The data is output to the data synthesizing unit 4, and the process proceeds to step ST7.

If the result of the determination in step ST22 indicates that the external file uses 256 or less colors, the display data classification unit 1 sets the display data 13 to perform color conversion on the read display data portion. As color conversion unit 3
Output to The color conversion unit 3 performs color conversion in steps ST3 to ST6, and outputs the color converted display data 14 to the display data synthesis unit 4. Subsequent processing of the display data synthesizing unit 4 and the color display panel 5 is the same as in the first embodiment.

As described above, according to the second embodiment, since the color conversion processing is performed according to the type of the display data 11, the discrimination of the display required for the operation is improved and the reproduction is performed. The effect is that the image data can be displayed without affecting the display of the image data in which the importance is important.

Further, according to the second embodiment, since only the portion requiring distinctiveness is selected and the color conversion is performed, the display data 11 is compared with the case where all the display data 11 are subjected to the color conversion.
Since the classification process of the display data is a simple process as compared with the color conversion process, an effect that the entire processing time can be reduced can be obtained.

Embodiment 3 FIG. FIG. 7 is a block diagram showing a configuration of a color display system according to Embodiment 3 of the present invention. In the figure, reference numeral 6 denotes a camera which is connected to the portable terminal device and measures illuminance at a place where the portable terminal device is used. is there. Other configurations are the same as those of the first embodiment shown in FIG. In this embodiment, it is determined whether or not to perform color conversion based on not only the type of display data but also the brightness of the place where the portable terminal device is used.

Next, the operation will be described. FIG. 8 is a diagram showing a specification table according to the third embodiment of the present invention. recent years,
The reflection type liquid crystal panel, which is often used as the color display panel 5 of the portable terminal device, has a characteristic of displaying more vividly in a bright place. Therefore, here, as shown in FIG. 8, even if the user interface portion has priority in discrimination, it is assumed that sufficient discrimination can be obtained when used in a bright place. It is assumed that color conversion is performed only when the device is used in a dark place without performing conversion, and a display color that is easy to identify is used.

FIG. 9 is a flowchart showing the classification and color conversion processing of display data according to the third embodiment of the present invention. In step ST31, the display data type classification unit 1 acquires the external illuminance in the usage environment of the mobile terminal device from the camera 6.

In step ST32, the display data classification unit 1 compares the acquired external illuminance with a predetermined value LXa. Here, the specified value LXa is a brightness threshold value that makes it difficult for the user to identify the display color on the color display panel 5, and is statistically determined from the characteristics of the color display panel 5 used and the visual characteristics of the user. It is calculated and set in advance.

As a result of the determination in step ST32, if the acquired external illuminance is brighter than the specified value LXa, the display data classification unit 1 classifies the display data.
The color conversion unit 3 does not perform the color conversion process, and ends the process illustrated in FIG.

If the result of determination in step ST32 is that the acquired external illuminance is darker than the specified value LXa, the processing from step ST1 is performed. The processing after step ST1 is the same as the processing shown in FIG. 5 of the first embodiment.

As described above, according to the third embodiment, the brightness of the use environment and the type of the display data 11
Since the color conversion process is performed, the display characteristics required for the operation can be improved, and the reproducibility can be displayed without affecting the display of the image data. can get.

According to the third embodiment, color conversion is performed only when the display content of the color display panel is difficult to identify in accordance with the external brightness, so that unnecessary color conversion processing is not performed. The effect that the processing time can be shortened is obtained.

It should be noted that Embodiments 1 to 3 above are described.
Has been described as being applied to mobile terminal devices such as mobile phones and personal digital assistants, but can also be applied to stationary OA devices such as workstations and personal computers.

[0061]

As described above, according to the present invention, display data is input and classified into display data not subjected to color conversion and display data to be subjected to color conversion. A color conversion table to be stored, and a display color that is difficult for a user with a visual impairment to identify among color-converted display data classified by the display data type classification unit, is stored in the color conversion table. A color conversion unit that converts the display data into a display color that is easy to identify using color conversion, and outputs the color-converted display data; display data that is not color-converted classified by the display data classification unit; and color conversion that is output by the color conversion unit A display data synthesizing unit for synthesizing the converted display data into video display data, and a color display panel for displaying the video display data converted by the display data synthesizing unit on a screen. By providing the above, it is possible to improve the identifiability of the display required for the operation, to display the image data without affecting the display of the image data where reproducibility is important, and to shorten the entire processing time. There is an effect that can be.

According to the present invention, the display data classification means inputs the display data expressed in the description language,
The display data of the user interface part for displaying labels and buttons on the screen of the color display panel is classified as the display data for color conversion, and the image data part for displaying a photograph or the like on the screen of the color display panel is classified. By classifying display data as display data that does not undergo color conversion, it is possible to improve the identifiability of the display required for operation and display the image data without affecting the display of image data where reproducibility is important. effective.

According to the present invention, the display data type classifying means converts the input display data into the display data of the image data portion or the user interface portion based on whether or not the description content of the display data refers to an external file. By classifying the display data into the display data, it is possible to improve the identifiability of the display required for the operation and display the image data without affecting the display of the image data in which reproducibility is regarded as important.

According to the present invention, the display data classification means classifies the input display data into the display data of the image data portion or the display data of the user interface portion according to the format of the referred external file. This has the effect of improving the identifiability of the display necessary for the operation and displaying the image data without affecting the display of the image data in which reproducibility is regarded as important.

According to the present invention, the display data classification means converts the input display data into the display data of the image data portion or the display data of the user interface portion according to the number of colors used by the referred external file. By classifying, there is an effect that the identifiability of the display required for the operation is improved, and the display can be performed without affecting the display of the image data in which reproducibility is regarded as important.

According to the present invention, when the external illuminance is darker than the specified value, the display data classification means performs unnecessary color conversion processing by classifying the display data into color-converted display data and color-converted display data. The processing time can be shortened.

According to the present invention, display data is input,
A first step of classifying display data that is not subjected to color conversion and display data that is subjected to color conversion;
A second step of converting a display color that is difficult for a user with visual impairment to identify to a display color that is easy to identify, and outputting color-converted display data;
By providing a third step of synthesizing the color-converted display data and converting it into video display data, and a fourth step of displaying the converted video display data on a screen, a display required for operation is provided. Of the image data whose reproducibility is regarded as important can be displayed without affecting the display, and the overall processing time can be shortened.

According to the present invention, when the external illuminance is darker than the specified value, by performing the first step, unnecessary color conversion processing is not performed, and the processing time can be shortened.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a display system according to Embodiment 1 of the present invention.

FIG. 2 is a diagram showing an example of a configuration of display data expressed in a description language according to the first embodiment of the present invention.

FIG. 3 is a diagram showing an example in which display data is displayed on a color display panel according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a specification table according to the first embodiment of the present invention.

FIG. 5 is a flowchart showing classification and color conversion processing of display data according to the first embodiment of the present invention.

FIG. 6 is a flowchart showing classification and color conversion processing of display data according to a second embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration of a display system according to Embodiment 3 of the present invention.

FIG. 8 is a diagram showing a specification table according to a third embodiment of the present invention.

FIG. 9 is a flowchart showing classification and color conversion processing of display data according to Embodiment 3 of the present invention.

FIG. 10 is a block diagram illustrating a configuration of a conventional display system.

[Explanation of symbols]

1 display data classification unit, 2 color conversion table, 3
Color conversion unit, 4 display data synthesis unit, 5 color display panel, 6 cameras, 11 display data, 12 display data without color conversion, 13 display data with color conversion, 14 display data with color conversion, 15 video display data, 21
Label display data, 22 Photo display data, 23 Button display data, 31 Displayed label text, 32
Displayed photos, 33 displayed buttons.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04M 1/00 H04M 1/00 W H04N 9/64 H04N 9/64 A 9/74 9/74 Z F term (reference) 5B057 CA01 CB01 CE17 DB06 DC25 5C066 AA03 CA00 EB01 ED02 EE01 FA02 GA01 GA32 GA33 KD06 KE02 KE09 KE13 KG01 KP02 5C082 BA02 BA12 BA20 BA27 BB51 CA12 CB01 CB03 DA87 MM10 5K027 BB01 FF00

Claims (8)

[Claims] A display data classification unit for inputting display data and classifying the display data into color-converted display data and display data not to be color-converted; a color conversion table storing predetermined color vision data; In the display data to be color-converted classified by the classification means, display colors that are difficult for a user with visual impairment to identify are converted into display colors that are easy to identify using the color vision data stored in the color conversion table. A color conversion unit that outputs color-converted display data, display data that is not subjected to color conversion classified by the display data classification unit, and color-converted display data output by the color conversion unit, and synthesizes the video display data. A display data synthesizing unit for converting, and a color display panel for displaying the video display data converted by the display data synthesizing unit on a screen. Over display system. 2. A display data classification means for inputting display data expressed in a description language and color-converting display data of a user interface part for displaying labels and buttons on a screen of a color display panel. 2. The color display system according to claim 1, wherein the display data is classified as display data, and display data of an image data portion for displaying a photograph or the like on a screen of a color display panel is classified as display data without color conversion. 3. The display data classification means converts the input display data into display data of an image data portion or display data of a user interface portion depending on whether or not the description content of the display data refers to an external file. 3. The color display system according to claim 2, wherein the color display system is classified. 4. A display data classification means for classifying input display data into display data of an image data portion or display data of a user interface portion according to a format of a referred external file. 3. The color display system according to 3. 5. A display data classification device for classifying input display data into display data of an image data portion or display data of a user interface portion according to the number of colors used by a referenced external file. The color display system according to claim 3, wherein: 6. The color display system according to claim 1, wherein the display data classification means classifies, when the external illuminance is darker than a prescribed value, display data which is not subjected to color conversion and display data which is subjected to color conversion. 7. A first step of inputting display data and classifying it into display data that is not color-converted and display data that is to be color-converted, and it is difficult for a user with visual impairment to be identified among the display data that is to be color-converted. Convert display colors to display colors that are easy to identify,
A second step of outputting color-converted display data; a third step of combining the display data without color conversion with the color-converted display data to convert the display data into video display data; 4th to display on the screen
And a color display method. 8. When the external illuminance is darker than a specified value, the first
8. The color display method according to claim 7, wherein the following steps are performed.