KR20020090310A - Display method and display apparatus - Google Patents

Abstract

PURPOSE: To provide a display method capable of suppressing color slippage from an original image while realizing smooth display using sub-pixels. CONSTITUTION: When a triple pattern obtained from the bit map patterns of a pixel to be interpolated and its peripheral pixels is £100|, the luminance information of a sub-pixel arranged on the left end is generated by copying the luminance information Y3 of a pixel arranged on the left side of the sub- pixel of the left end. When the luminance information of the sub-pixel of the left end is generated, the color difference information of the sub-pixel of the left end is generated by copying the color difference information Cb3, Cr3 of the pixel arranged on the left side of the pixel to be interpolated.

Description

Display method and display device {DISPLAY METHOD AND DISPLAY APPARATUS}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display method and a display apparatus for a display device in which RGB light emitting elements of three primary colors are provided together.

Conventionally, display apparatuses using various display devices have been used. Of these display devices, for example, three light emitting elements each emitting RGB three primary colors, such as a color LCD and a color plasma display, are all one pixel in a predetermined order, and the pixels are arranged in parallel in the first direction to form one line. A plurality of lines may be provided in a second direction orthogonal to the first direction to configure a display screen.

By the way, many display devices, such as a display device mounted in a mobile telephone, a mobile computer, etc., are comparatively narrow and it is hard to perform detailed display. When a small character, a picture, a complicated picture, or the like is displayed on such a display device, part of the image is damaged and tends to become unclear.

In order to improve display sharpness on a narrow screen, a document (title: "Sub Pixel Font Rendering Technology") on subpixel display using a dot consisting of three RGB light emitting elements on the Internet has been published. The present inventors downloaded and confirmed this document from the site (http://grc.com) or its subordinate on June 19, 2000.

Next, this technique will be described with reference to FIGS. 28 to 32. Hereinafter, as an example of the image to display, the English letter "A" is employ | adopted.

By the way, Fig. 28 schematically shows one line in the case where one pixel is composed of three light emitting elements. The horizontal direction (direction in which the RGB three primary colors light emitting elements are arranged) in FIG. 28 is called a first direction, and the vertical direction orthogonal to this is called a second direction.

Incidentally, the alignment direction of the light emitting element itself may be considered other than the order of RGB. However, even if the alignment direction is changed, this prior art and the present invention can be similarly applied.

Then, one pixel (three light emitting elements) is arranged in one line in the first direction, thereby forming one line. In addition, the display screen is configured by arranging these lines in the second direction.

By the way, in this subpixel technique, an original image is an image as shown, for example in FIG. In this example, the letter "A" is displayed in areas of 7 pixels vertically and horizontally. On the other hand, in order to perform subpixel display, when each light emitting element of RGB is regarded as 1 pixel, about 30 (= 7 * 3) pixel in the horizontal direction and 7 pixel in the vertical direction, it is FIG. As shown in Fig. 2, fonts having a resolution three times in the horizontal direction are prepared.

And as shown in FIG. 31, the color is determined about each pixel of FIG. 29 (pixel of FIG. 29 instead of FIG. 30). However, if it displays as it is, since color unevenness arises, the filtering process by a coefficient as shown to Fig.32 (a) is performed. In Fig. 32 (a), coefficients for luminance are shown. The coefficients are 3/9 times in the center subpixel, 2/9 times in the neighboring subpixel, and 1/9 times in the neighboring subpixel. Multiply to adjust the luminance of each subpixel.

Moreover, in order to improve the visibility of an image in a narrow display area, anti-aliasing process is performed. However, the anti-aliasing process only blurs the image as a whole, thereby alleviating the Giza Giza feeling, and the image quality is reduced by the blurring.

This point uses the sub-pixel technique to improve visibility.

However, the subpixel technique is a technique for black and white binary data and does not correspond to chopped image data (color image data and gray scale image data).

Therefore, an object of the present invention is to provide a display method and a display device which can suppress color shift with an original image when performing subpixel display based on the chopped image data in pixel units.

1 is a block diagram of a display device according to a first embodiment of the present invention;

2 (a) is an illustration of binarization processing using the same fixed threshold value;

Fig. 2 (b) is an illustration of binarization processing based on the variation threshold;

3 is a flowchart from the same binarization process to the generation of triple pattern;

4 (a) is an exemplary diagram of luminance information generation using the method of copying only;

4 (b) is an exemplary diagram of color difference information generation using the method of copying only;

5 (a) is another exemplary diagram of luminance information generation using the method by the same radiation;

5 (b) is another example of color difference information generation using the method of copying only;

Fig. 6 is a relation diagram of the luminance information and the color difference information and the triple pattern generated by the method of copying only;

Fig. 7 (a) is an illustration of luminance information generation using the method based on the same load average,

Fig. 7 (b) is an illustration of color difference information generation using the method based on the same load average,

Fig. 8 is a relation diagram of the luminance information and the color difference information and the triple pattern generated by the method based on the same load average,

Fig. 9 is a diagram showing the relationship between the luminance information and the color difference information and the triple pattern generated by the method according to different load averages;

10 is an explanatory diagram of a formula of a load average used in the method by the same load average;

11 is an explanatory diagram of the same luminance information / color difference information / RGB conversion;

12 is a flowchart of the display device;

Fig. 13 is an illustration of the triple pattern generating means.

14 is a definition diagram of a reference pattern in the same triple pattern generating means;

15 (a) is an exemplary diagram of a reference pattern in the same triple pattern generating means;

15 (b) is an exemplary diagram of a triple pattern in the triple triple pattern generating means;

15 (c) is an illustration of a reference pattern in the same triple pattern generating means;

15 (d) is an exemplary diagram of a triple pattern in the triple triple pattern generating means;

15 (e) is an illustration of a reference pattern in the same triple pattern generating means;

15 (f) is an illustration of triple patterns in the triple pattern generating means;

16 is a relationship diagram between a bit string and a triple pattern in the triple pattern generating means;

17 is another exemplary view of the same triple pattern generating means;

18 (a) is a definition diagram of a reference pattern in the same triple pattern generating means;

18 (b) is a relationship diagram between a reference pattern and a triple pattern in the triple pattern generating means;

18 (c) is a relation diagram of a reference pattern and a triple pattern in the triple pattern generating means;

18 (d) is a relationship diagram between a reference pattern and a triple pattern in the triple pattern generating means;

18 (e) is a relationship diagram of a reference pattern and a triple pattern in the triple pattern generating means;

18 (f) is a relation diagram of a reference pattern and a triple pattern in the triple pattern generating means;

18 (g) is a relationship diagram between a reference pattern and a triple pattern in the triple pattern generating means;

19 is a block diagram of a display device according to a second embodiment of the present invention;

20 is an exemplary diagram of a method of generating color difference information after the same correction;

21 is another exemplary diagram of a method for generating color difference information after the same correction;

Fig. 22 is an explanatory diagram of color difference information / RGB conversion after the same luminance information and correction;

23 is a flowchart of the display device;

24 is a block diagram of a display device according to a third embodiment of the present invention;

25 (a) is an explanatory diagram of a method of generating luminance information by the same load average;

25 (b) is an explanatory diagram of a method for generating color difference information based on the same load average;

26 (a) is an explanatory diagram of a method of generating luminance information using different load averages;

Fig. 26B is an explanatory diagram of a method for generating color difference information using different load averages;

27 is a flowchart of the display device;

28 is a schematic diagram of a conventional one line;

29 is an exemplary view of a conventional original image;

30 is an exemplary view of a conventional triple image;

31 is an explanatory diagram of a conventional color determination process;

32 (a) is an explanatory diagram of a conventional filtering processing coefficient;

32 (b) is an exemplary diagram of a conventional filtering process result.

Explanation of symbols for the main parts of the drawings

1: display information input means 2: display control means

3: display device 4: display image storage means

5: Original image data storage means 6: Luminance color difference separating means

7: Original image luminance information storage means 8: Original image color difference information storage means

9: binarization processing means 10: triple pattern generating means

11: luminance information generating means in subpixel units

12: luminance information storage means in subpixel units

13: use calcination information storage means

14: means for generating color difference information in subpixel units

15: color difference information storage means in subpixel units

16: filtering processing means

17: luminance information storage means after correction

18: luminance chrominance synthesizing means

In the display method according to the first aspect of the invention, three light emitting elements each emitting RGB three primary colors are arranged in a predetermined order to form one pixel, and the pixels are arranged in a first direction to form one line. Plural numbers are provided in a second direction orthogonal to the first direction so that the display device constituting the display screen is displayed.

In this case, the display method includes inputting the chopped image data in pixel units, separating the input chopped image data into luminance information in pixel units and color difference information in pixel units, and inputting luminance information in pixel units, Generating luminance information of three subpixels constituting the pixel of interest by using luminance information of a pixel adjacent to the pixel of interest and luminance information of the pixel of interest, and generating luminance information by inputting color difference information in units of pixels; Generating color difference information of three sub-pixels constituting the pixel of interest by using color difference information of a pixel adjacent to the pixel of interest and color difference information of the pixel of interest, which are pixels used at the time; Display Diva by assigning the RGB values of the three subpixels generated based on the luminance information and the color difference information of the subpixels to three light emitting elements constituting one pixel And a step of allowing the display on the bus.

A display device according to the second invention includes a display device, luminance chrominance separating means, subpixel unit luminance information generating means, subpixel unit color difference information generating means, and display control means.

The display device comprises three light emitting elements each emitting RGB three primary colors in a predetermined order to form one pixel, and the pixels are arranged in a first direction to form one line, and the line is arranged in the first direction. Plural numbers are provided in the second direction orthogonal to form a display screen.

The luminance chrominance separating means inputs the chopped image data in units of pixels and separates the input chopped image data into luminance information in units of pixels and chrominance in units of pixels.

The luminance information generating means for subpixel unit inputs luminance information in units of pixels, and uses luminance information of a pixel adjacent to the pixel of interest and luminance information of the pixel of interest to display luminance information of three subpixels constituting the pixel of interest. Create

The subpixel unit color difference information generating means inputs the color difference information in pixel units and uses the color difference information of the pixel adjacent to the pixel of interest and the color difference information of the pixel of interest which are pixels used when generating luminance information. Color difference information of the three subpixels constituting the subfield is generated.

The display control means assigns the RGB values of the three subpixels generated based on the luminance information and the color difference information of the three subpixels constituting the pixel of interest to the three light emitting elements constituting the one pixel for display. Enable display on the device.

With the above configuration, in each of the display method according to the first invention and the display device according to the second invention, color difference information in subpixel units is generated using the same pixel as that of generating luminance information in subpixel units. Therefore, it is possible to suppress occurrence of color shift between the chopped image for displaying the subpixels on the display device and the chopped image (original image) in the input pixel unit.

In the display method according to the third aspect of the present invention, three light emitting elements each emitting RGB three primary colors are arranged in a predetermined order to form one pixel, and these pixels are arranged in a first direction to form one line. A plurality of displays are provided in a second direction orthogonal to the first direction to cause display to be performed on the display device constituting the display screen.

In this case, the display method includes inputting the chopped image data in pixel units, separating the input chopped image data into luminance information in pixel units and color difference information in pixel units, and inputting luminance information in pixel units, Generating luminance information of three subpixels constituting the pixel of interest by using luminance information of a pixel adjacent to the pixel of interest and luminance information of the pixel of interest, and inputting color difference information in units of pixels to form the pixel of interest Generating color difference information after correction of the pixel of interest using color difference information of a pixel adjacent to the pixel of interest and color difference information of the pixel of interest, which are pixels used when generating luminance information of three subpixels The RGB values of the three subpixels generated based on the color difference information after correction and the luminance information of the three subpixels constituting the pixel of interest form one pixel. Assigned to the three light-emitting element by a step that executes the display on the display device.

A display device according to the fourth aspect of the invention includes a display device, luminance color difference separating means, subpixel unit luminance information generating means, color difference information correcting means, and display control means.

The display device comprises three light emitting elements each emitting RGB three primary colors in a predetermined order to form one pixel, and the pixels are arranged in a first direction to form one line, and the line is arranged in the first direction. Plural numbers are provided in the second direction orthogonal to form a display screen.

The luminance chrominance separating means inputs the chopped image data in units of pixels and separates the input chopped image data into luminance information in units of pixels and chrominance in units of pixels.

The luminance information generating means for subpixel unit inputs luminance information in units of pixels, and uses luminance information of a pixel adjacent to the pixel of interest and luminance information of the pixel of interest to display luminance information of three subpixels constituting the pixel of interest. Create

The chrominance information correcting means inputs chrominance information in units of pixels to generate chrominance information of three subpixels constituting the pixel of interest, and the color difference information of the pixel adjacent to the pixel of interest and the color difference of the pixel of interest. The information is used to generate color difference information after correction of the pixel of interest.

The display control means generates three RGB light-emitting elements of one pixel based on the RGB values of the three subpixels generated based on the color difference information after correction of the pixel of interest and the luminance information of the three subpixels constituting the pixel of interest. Assign to an element so that display is performed on the display device.

With the above configuration, in each of the display method according to the third invention and the display device according to the fourth invention, color difference information after correction of the pixel of interest is generated using the same pixel as that of generating luminance information in subpixel units. Therefore, it is possible to suppress the occurrence of color shift between the chopped image for displaying the subpixels on the display device and the chopped image (original image) in the input pixel unit.

Further, in each of the display method according to the third invention and the display device according to the fourth invention, since the color difference information after correction of the pixel of interest generated is color difference information in pixel units, the data amount of color difference information is in color units in subpixel units. Compared with the case where information is generated, it becomes 1/3, and the storage area for storing the color difference information can be suppressed.

In the display method according to the fifth aspect of the present invention, three light emitting elements each emitting RGB three primary colors are arranged in parallel to form one pixel, and the pixels are arranged in parallel in the first direction to form one line. A plurality of displays are provided in a second direction orthogonal to the first direction to cause display to be performed on the display device constituting the display screen.

In this case, the display method includes inputting the chopped image data in pixel units, separating the input chopped image data into luminance information in pixel units and color difference information in pixel units, and inputting luminance information in pixel units, Among the three subpixels constituting the pixel of interest, two subpixels except for the center subpixel are generated by using the luminance information of the pixel of interest and the luminance information of the pixel adjacent to the pixel of interest. The luminance information of the central subpixel is generated by copying the luminance information of the pixel of interest, and the color difference information in units of pixels is input to select the central subpixel of the three subpixels constituting the pixel of interest. With respect to the two sub-pixels excluded, the color difference information of the pixel of interest and the adjacent pixel, which are the pixels used when generating the luminance information, is uniformly used. Generating color difference information, and generating color difference information of the center subpixel by copying color difference information of the pixel of interest, and generating the color difference information based on luminance information and color difference information of three subpixels constituting the pixel of interest; And assigning the RGB values of the three subpixels to three light emitting elements constituting one pixel to cause the display device to perform display.

A display device according to the sixth invention includes a display device, luminance chrominance separating means, subpixel unit luminance information generating means, subpixel unit color difference information generating means, and display control means.

The display device comprises three light emitting elements each emitting RGB three primary colors in a predetermined order to form one pixel, and the pixels are arranged in a first direction to form one line, and the line is arranged in the first direction. Plural numbers are provided in the second direction orthogonal to form a display screen.

The luminance chrominance separating means inputs the chopped image data in units of pixels and separates the input chopped image data into luminance information in units of pixels and chrominance in units of pixels.

The subpixel unit luminance information generating means inputs luminance information in pixel units, and among the three subpixels constituting the pixel of interest, the luminance information of the pixel of interest is uniformly applied to two subpixels except for the center subpixel. And luminance information is generated using the luminance information of the pixel adjacent to the pixel of interest, and the luminance information of the center subpixel is generated by copying the luminance information of the pixel of interest.

The subpixel unit color difference information generating means inputs the color difference information in units of pixels to uniformly generate luminance information for two subpixels excluding the center subpixel among the three subpixels constituting the pixel of interest. Color difference information is generated using the color difference information of the pixel of interest and the adjacent pixel which were used at the time, and the color difference information of the center subpixel is produced by copying the color difference information of the pixel of interest.

The display control means assigns the RGB values of the three subpixels generated based on the luminance information and the color difference information of the three subpixels constituting the pixel of interest to the three light emitting elements constituting the one pixel for display. Enable display on the device.

With the above configuration, in each of the display method according to the fifth invention and the display device according to the sixth invention, color difference information in subpixel units is generated using the same pixel as that in generating luminance information in subpixel units. It is possible to suppress the occurrence of color shift between the chopped image for displaying the subpixel on the display device and the chopped image (original image) in the unit of the input pixel.

In each of the display method according to the fifth invention and the display device according to the sixth invention, the luminance information and the attention of the pixels adjacent to the pixel of interest are selected only for the subpixels that select a particular pixel of interest and constitute the selected pixel of interest. Compared with the case where the luminance information of the pixel is used and the luminance information is generated, the processing for selecting a specific pixel of interest is unnecessary, so that the throughput can be reduced.

Embodiments of the present invention will be described below with reference to the drawings.

(Example 1)

1 is a block diagram of a display device according to a first embodiment of the present invention. As shown in FIG. 1, the display device includes display information input means 1, display control means 2, display device 3, display image storage means 4, original image data storage means 5, Luminance chrominance separating means 6, original image luminance information storing means 7, original image chrominance information storing means 8, binarization processing means 9, triple pattern generating means 10, subpixel unit luminance information Generation means 11, subpixel unit luminance information storage unit 12, utilization pixel information storage unit 13, subpixel unit color difference information generation unit 14, subpixel unit color difference information storage unit 15, filtering processing Means 16, post-correction luminance information storage means 17, and luminance chrominance synthesizing means 18.

The display information input means 1 inputs display information. The original image data input as the display information is stored in the original image data storage means 5.

The original image data input as the display information is chopped image data. In this specification, the chopped image data is color image data or gray scale image data.

The display control means 2 controls each element of FIG. 1, and performs display on the display device 3 based on the display image memorize | stored by the display image storage means 4 (VRAM etc.) for subpixel display. Let's do it.

The display device 3 forms one pixel by arranging three light emitting elements each emitting RGB three primary colors in a predetermined order, and arranged the pixels in parallel in the first direction to form one line. The display screen is configured by providing a plurality in a second direction perpendicular to the direction. Specifically, the present invention includes a color liquid crystal display (LCD), a color plasma display, an organic electroluminescent (EL) display, and a driver for driving each of these light emitting elements.

Here, the subpixel will be briefly described. In the present embodiment, the subpixel refers to each element obtained by dividing one pixel into three equal parts in the first direction. Therefore, since one pixel is configured by arranging three light emitting elements each emitting RGB three primary colors in a predetermined order, the three RGB subpixels correspond to the RGB3 light emitting elements.

(RGB → YCbCr conversion)

The luminance chrominance separating means 6 separates original image data in units of pixels into luminance information Y in units of pixels and chrominance information Cb and Cr in units of pixels.

It demonstrates concretely. Each value of RGB in the original image data is r, g and b, respectively. In this case, it is applied as Y = 0.299 × r + 0.587 × g + 0.114 × b, Cb = -0.172 × r-0.339 × g + 0.511 × b, Cr = 0.511 × r-0.428 × g-0.083 × b. In addition, this formula is an example and can be substituted by another similar formula.

The luminance chrominance separating means 6 separates the original image data into luminance information Y and chrominance information Cb and Cr using this equation. The luminance information and the color difference information obtained in this case are in pixel units.

The original image luminance information storage means 7 temporarily stores the luminance information Y thus obtained, and the original image color difference information storage means 8 temporarily stores the color difference information Cb and Cr thus obtained.

(Binary evolution)

The adjustment of the luminance information in units of subpixels described later is performed in order to smoothly display the boundary between the characters, graphics, and the background when the image is displayed. Although binarization is originally performed to generate a triple pattern to be described later, it is also performed to detect such boundary portions.

By the way, the binarization processing means 9 first extracts the luminance information of the pixel of interest and the pixels around it from the original image luminance information storage means 7. The binarization processing means 9 generates the binary data by binarizing the luminance information of the pixel of interest and the pixels around it using the threshold value.

That is, this threshold value is compared with respective luminance information of the pixel of interest and surrounding pixels, and the luminance information of each pixel is binarized according to whether or not the luminance information of each pixel is larger than the threshold value. Data consisting of "0" and black "1").

As described above, the binarization processing means 9 obtains the bitmap pattern of the pixel of interest and the pixels around it by binarization.

By the way, the threshold value in the case of binarization may be either fixed or variable. However, the fixed threshold value is preferable to suppress the throughput, and the variation threshold value is preferable to improve the quality. This point is explained in detail.

2 is an explanatory diagram of a binarization process. Fig. 2 (a) is an illustration of binarization by a fixed threshold, and Fig. 2 (b) is an illustration of binarization by a variation threshold.

As shown in Fig. 2 (a), it is assumed that luminance information (chopped data) of the pixel of interest (the diagonal portion) and the pixels around it is extracted. Then, as an example of the fixed threshold value, a case of employing "128" to binarize is considered.

In FIG. 2A, the luminance information of all the extracted pixels is larger than the fixed threshold value "128". Therefore, by binarization, all the binary data of the luminance information of the extracted pixel become white "0", and all obtain a bitmap pattern of white "0".

By the way, in FIG.2 (b), like FIG.2 (a), the brightness information (chopped data) of 3x3 pixel centering on the pixel of interest is extracted. The extraction of the luminance information of the 3x3 pixel is performed on all the pixels of interest while updating the pixels of interest. Therefore, luminance information of 3x3 pixels is extracted for each pixel of interest.

And the threshold value is set for every 1 unit by making 3x3 pixel to extract into 1 unit. The threshold set in this way is a variation threshold. As a calculation method of this variation threshold value, "the threshold value calculation method of oz" is used, for example.

In FIG. 2B, the variation threshold value of the extracted 3x3 pixel is "220". By using this variation threshold value "220", binary information is created by binarizing luminance information (chopped data) of 3x3 pixels. The binary data is white "0" when each luminance information of 3x3 pixels is larger than the variation threshold value "220", and black "1" when it is small, and it is a bitmap pattern different from FIG. 2 (a). Is getting.

As shown in Fig. 2A, at the fixed threshold value "128", for example, binary data of "255" (white) and "150" (green) is all set to "0".

On the other hand, as shown in Fig. 2B, when the variation threshold value is "220", for example, binary data of "255" (white) and "150" (green) becomes white "0" and black "1", respectively. , Both are distinguished.

This means that, for example, in the case of binarizing luminance information of a color image, the boundary between the character and the background (the outline of the character) cannot be detected as the fixed threshold value, but can be detected as the variation threshold value.

The adjustment of the luminance information in units of subpixels described later is performed to smooth the display of the boundary between the characters, figures, and the background. However, if the boundary can be detected with accuracy as the variation threshold, a fixed threshold may be employed. A smoother display can be realized than in the case.

On the other hand, since the threshold value is not calculated for every 3 x 3 pixels (1 unit) extracted for each pixel of interest in the case of the fixed threshold value, the throughput can be reduced as compared with the case of the variable threshold value.

(3x pattern generation)

The triple pattern generating means 10 generates a triple pattern based on the bitmap pattern (binary data) obtained by the binarization processing means 9. Generation of the triple pattern can be done by a pattern matching method or a logical operation method, which will be described later in detail.

3 is a flowchart from binarization of luminance information to generation of a triple pattern. As shown in FIG. 3, the binarization processing means 9 first extracts luminance information of the pixel of interest (the oblique portion) and the surrounding pixels from the original image luminance information storage means 7.

The binarization processing means 9 then uses the threshold to binarize the luminance information of the pixel of interest and the pixels around it to generate binary data. In other words, the binarization yields a bitmap pattern of the pixel of interest and the pixels around it.

Next, the triple pattern generating means 10 generates a triple pattern of the pixel of interest based on the bitmap pattern (binary data) obtained by the binarization processing means 9 binarizing the pixel of interest and the pixels around it. Create

Next, the triple pattern generating means 10 generates a bit string in which the triple pattern of the pixel of interest is expressed in bits.

(Generate luminance information in subpixels, and generate color difference information in subpixels)

The method of generating the luminance information and the color difference information in units of subpixels is roughly divided into a method of only copying and a method of load averaging. First, the copying method will be described.

The subpixel unit luminance information generating means 11 generates the luminance information of each of the three subpixels constituting the pixel of interest by copying the luminance information of the pixel of interest.

Alternatively, the subpixel unit luminance information generating unit 11 generates the luminance information of the central subpixel constituting the pixel of interest by copying the luminance information of the pixel of interest, and further generates the luminance information of the subpixels of both ends by a triple pattern. According to the triple pattern generated by the generating means 10, it generates by copying the luminance information of the pixel adjacent to the pixel of interest.

Since the triple pattern of the pixel of interest is generated based on the bitmap pattern generated by the binarization processing means 9, by copying the luminance information of the pixels adjacent to the pixel of interest by copying the luminance information of the subpixels at both ends. It is also possible to determine whether it produces | generates according to the bitmap pattern which the binarization processing means 9 obtained.

Next, the subpixel unit color difference information generating means 14 generates luminance information of each of the three subpixels constituting the pixel of interest by copying the luminance information of the pixel of interest (three subpixels constituting the main pixel). In either case, when generating the luminance information, when the luminance information of the pixel adjacent to the pixel of interest is not used), the color difference information of each of the three subpixels constituting the pixel of interest is obtained. Created by copying color difference information.

On the other hand, when the subpixel unit color difference information generating means 14 generates the luminance information for any one of the three subpixels constituting the pixel of interest, the luminance information of the pixel adjacent to the pixel of interest is used. Is generated by copying the color difference information of the sub-pixels. For the other subpixels, the color difference information is generated by copying the color difference information of the pixel of interest.

Hereinafter, a specific example is given and described.

4 is an exemplary diagram when luminance information and color difference information in subpixel units are generated using a copy only method. 4A shows an example of luminance information generation, and FIG. 4B shows an example of color difference information generation.

As shown in Fig. 4A, in the case where the bit string of the triple pattern of the pixel of interest (the diagonal line) is [111], the subpixel unit luminance information generating means 11 includes three subs constituting the pixel of interest. The luminance information Y of each pixel is generated by copying the luminance information Y4 of the pixel of interest.

The subpixel unit luminance information generating unit 11 does not use luminance information of a pixel adjacent to the pixel of interest when generating the luminance information for any of the three subpixels constituting the pixel of interest. Information indicating that the information is not stored is stored in the utilization pixel information storage means 13.

As described above, when one of the three subpixels constituting the pixel of interest is not used in the luminance information of the pixel adjacent to the pixel of interest when generating the luminance information, it is shown in Fig. 4B. As described above, the subpixel unit color difference information generating means 14 generates color difference information Cb and Cr of each of the three subpixels constituting the pixel of interest by copying the color difference information Cb4 and Cr4 of the pixel of interest.

In this case, the sub-pixel unit color difference information generation means 14 refers to the use pixel information storage means 13 to generate the luminance information for any one of the three sub-pixels constituting the pixel of interest. Note that the luminance information of the pixel adjacent to the pixel is not used.

In addition, in Fig. 4B, although the color difference information Cb4 and Cr4 are described in one pixel of interest, the color difference information Cb4 and Cr4 exist for one pixel of interest, respectively. Further, although color difference information Cb4 and Cr4 are described in one subpixel, color difference information Cb4 and Cr4 exist for one subpixel, respectively. These can be described with respect to all of the description herein.

5 is another exemplary diagram when generating luminance information and color difference information in subpixel units using a copy only method. FIG. 5A shows an example of luminance information generation and FIG. 5B shows an example of color difference information generation.

As shown in Fig. 5A, when the bit string of the triple pattern of the pixel of interest (the diagonal line) is [100], the subpixel unit luminance information generating means 11 constitutes the center and the right end of the pixel of interest. Luminance information Y of the subpixel of is generated by copying luminance information Y4 of the pixel of interest.

On the other hand, in this case, the subpixel unit luminance information generating means 11 generates the luminance information Y of the left subpixel constituting the pixel of interest by copying the luminance information Y3 of the pixel on the left side of the pixel of interest.

Then, when generating the luminance information of the left sub-pixel constituting the pixel of interest, the subpixel unit luminance information generating means 11 uses information indicating that the luminance information of the pixel on the left side of the pixel of interest is used. It stores in the storage means 13.

As described above, when the luminance information of the left side pixel of the pixel of interest is used when generating the luminance information of the left pixel of the pixel of interest, the sub-pixel unit color difference information as shown in FIG. The generating means 14 generates the color difference information Cb and Cr of the subpixels of the left end constituting the pixel of interest by copying the color difference information Cb3 and Cr3 of the pixel on the left side of the pixel of interest.

On the other hand, the subpixel unit color difference information generating means 14 generates the color difference information Cb and Cr of the center pixel and the right end constituting the pixel of interest by copying the color difference information Cb4 and Cr4 of the pixel of interest.

In addition, the subpixel unit color difference information generating means 14 refers to the use pixel information storage means 13 to generate luminance information of the left subpixel constituting the pixel of interest. Note that the luminance information is used.

FIG. 6 is a relationship diagram between a triple pattern of a pixel of interest and luminance information and color difference information in units of subpixels generated by a copying only method.

In FIG. 6, the case where the pixels are arranged in order of the pixel 0, the pixel of interest 1, and the pixel 2 is illustrated.

The luminance information Y and the color difference information Cb and Cr of the pixel 0 are Y0, Cb0 and Cr0, respectively, and the luminance information Y and the color difference information Cb and Cr of the pixel 1 of interest are Y1 and Cb1, respectively. And Cr1, and luminance information Y and color difference information Cb and Cr of pixel 2 are Y2, Cb2 and Cr2, respectively.

By the way, eight types of triple patterns of a target pixel exist. Therefore, in Fig. 6, all eight types of bit strings of the triple pattern of the pixel of interest are described. The luminance information Y and the color difference information Cb and Cr of three subpixels constituting the pixel of interest 1 generated for each triplet pattern are described.

Next, the case where the luminance information and the chrominance information in subpixel units are generated using the load average method will be described.

The subpixel unit luminance information generating means 11 generates the luminance information of each of the three subpixels constituting the pixel of interest by copying the luminance information of the pixel of interest.

Alternatively, the subpixel unit luminance information generating unit 11 generates luminance information of the central subpixel constituting the pixel of interest by copying luminance information of the pixel of interest, and further generates luminance information of the subpixels of both ends. In accordance with the triple pattern generated by the pattern generating means 10, it generates by the load average of the luminance information of the pixel of interest and the luminance information of the pixel adjacent to the pixel of interest.

In addition, since the triple pattern of the pixel of interest is generated based on the bitmap pattern generated by the binarization processing means 9, it is binarized about whether the luminance information of the subpixels of both ends is produced by a load average. It is also possible to determine that the means 9 are determined according to the generated bitmap pattern.

Next, the sub-pixel unit color difference information generating means 14 generates the luminance information of each of the three sub-pixels constituting the pixel of interest by copying the luminance information of the pixel of interest (three sub-elements of the pixel of interest). In any of the pixels, when generating the luminance information, when the luminance information of the pixel adjacent to the pixel of interest is not used), the color difference information of each of the three subpixels constituting the pixel of interest is referred to as the pixel of interest. It is created by copying the color difference information of.

On the other hand, the sub-pixel unit color difference information generating means 14 uses the luminance information of the pixel of interest and the pixels adjacent thereto when generating the luminance information with respect to any one of the three subpixels constituting the pixel of interest. If there is, the color difference information of the subpixel is generated by the load average of the color difference information of the adjacent pixel and the color difference information of the pixel of interest. For the other subpixels, the color difference information is generated by copying the color difference information of the pixel of interest.

Hereinafter, a specific example is given and described.

7 is an exemplary view when generating luminance information and color difference information having a subpixel ratio degree by using a load average method. Fig. 7A shows an example of luminance information generation and Fig. 7B shows an example of color difference information generation.

As shown in Fig. 7A, when the bit string of the triple pattern of the pixel of interest (the diagonal line) is [100], the subpixel unit luminance information generating means 11 forms the center and the right end of the pixel of interest. Luminance information Y of the subpixel of is generated by copying luminance information Y4 of the pixel of interest.

On the other hand, in this case, the subpixel unit luminance information generating means 11 obtains the luminance information Y 'of the left subpixel constituting the pixel of interest, the luminance information Y4 of the pixel of interest, and the luminance information of the pixel on the left side of the pixel of interest. Produced by load average with Y3.

Specifically, the luminance information Y 'of the left subpixel constituting the pixel of interest is generated as Y' = 0.5 x Y3 + 0.5 x Y4.

The subpixel unit luminance information generating unit 11 uses information indicating that the luminance information of the pixel on the left side of the pixel of interest is used when generating the luminance information of the left subpixel constituting the pixel of interest. In the means 13.

As described above, when the luminance information of the left side pixel of the pixel of interest is used when generating the luminance information of the left pixel of the pixel of interest, the sub-pixel unit color difference information, as shown in Fig. 7B. The generation means 14 compares the color difference information Cb 'and Cr' of the left subpixel constituting the pixel of interest with the color difference information Cb4 and Cr4 of the pixel of interest and the color difference information Cb3 and Cr3 of the pixel on the left side of the pixel of interest. Generate by load average.

Specifically, color difference information Cb 'of the left sub-pixel constituting the pixel of interest is generated with Cb' = 0.5 x Cb3 + 0.5 x Cb4, and color difference information Cr 'of the left sub-pixel Cr' = 0.5 x Cr3 Produced as + 0.5 × Cr 4.

On the other hand, the subpixel unit color difference information generating means 14 generates the color difference information Cb and Cr of the center pixel and the right end constituting the pixel of interest by copying the color difference information Cb4 and Cr4 of the pixel of interest.

Also in the method based on the load average, when the bit string of the triple pattern of the pixel of interest is [111], the luminance information and the color difference information in units of subpixels are the same as in the case of FIG.

Fig. 8 is a relationship diagram between the triple pattern of the pixel of interest and the luminance information and the color difference information in subpixel units generated by the load average method.

In FIG. 8, the pixel is arranged in order of pixel 0, pixel 1 of interest, and pixel 2 in order.

The luminance information Y and the color difference information Cb and Cr of the pixel 0 are Y0, Cb0 and Cr0, respectively, and the luminance information Y and the color difference information Cb and Cr of the pixel 1 of interest are Y1 and Cb1, respectively. And Cr1, and luminance information Y and color difference information Cb and Cr of pixel 2 are Y2, Cb2 and Cr2, respectively.

By the way, eight types of triple patterns of a target pixel exist. Therefore, in Fig. 8, all eight types of bit strings of the triple pattern of the pixel of interest are described. The luminance information Y and the color difference information Cb and Cr of three subpixels constituting the pixel of interest 1 generated for each triplet pattern are described.

In the description of FIGS. 7 and 8, the luminance information in units of subpixels is determined by the load average between the luminance information of the pixel of interest and the luminance information of pixels adjacent to the left and right of the pixel of interest, and the color difference information of the unit of subpixels. Is determined by the load average between the color difference information of the pixel of interest and the color difference information of the pixels adjacent to the left and right of the pixel of interest, but the object of the load average is not limited to one direction such as left and right. Next, an example thereof will be described.

FIG. 9 is a relation diagram of a triple pattern of a pixel of interest and luminance information and color difference information in units of subpixels generated by a method using different load averages.

In FIG. 9, the pixels are arranged in the order of the pixels 11, the pixels 21, and the pixels 31 in the first direction to form one line. Further, the pixels are arranged in the order of the pixel 12, the pixel 22 of interest, and the pixel 32 in the first direction to form one line. Further, the pixels are arranged in parallel with the pixels 13, the pixels 23, and the pixels 33 in the first direction to form one line. The three lines are arranged in the second direction.

Further, the luminance information Y and the color difference information Cb and Cr of the pixel 11 are Y11, Cb11 and Cr11, respectively, and the luminance information Y and the color difference information Cb and Cr of the pixel 21 are Y21, Cb21, and C11, respectively. The luminance information Y and the color difference information Cb and Cr of the pixel 31 are Y31, Cb31, and Cr31, respectively.

The method of writing the luminance information Y and the color difference information Cb and Cr of the other pixels and the pixel of interest also includes the method of writing the luminance information Y and the color difference information Cb and Cr of the pixels 11, 21, and 31. It is the same.

By the way, eight types of triple patterns of a target pixel exist. Therefore, in Fig. 9, all eight types of bit strings of the triple pattern of the main pixel are described. The luminance information Y and the color difference information Cb and Cr of three subpixels constituting the pixel of interest 1 generated for each triplet pattern are described.

By the way, in the description of FIGS. 7 to 9, although the luminance information and the color difference information in subpixel units were determined by the load average, the equations for calculating the load average are not limited thereto.

10 is an explanatory diagram of a formula of a load average when determining luminance information and color difference information in subpixel units.

Fig. 10 shows the equation in the case where the luminance information YX and the color difference information CbX and CrX of a certain subpixel are obtained by the load average. "N" in the mathematical formula of FIG. 10 is the number of pixels used when requesting a load average.

"A1 to An" in the formula is the luminance information Y of the pixel used when the load average is requested. "B1 to Bn" in the formula is the color difference information Cb of the pixel used when requesting the load average. "C1 to Cn" in the formula is the color difference information Cr of the pixel used when obtaining the load average. "M1-mn" in a formula is a load (weighting value).

In the method based on the load average in this embodiment, it is possible to arbitrarily determine which pixel to use when determining the load average. Therefore, "n" in the mathematical formula of FIG. 10 is arbitrary. The coefficients "m1 to mn" in the equation can also be set arbitrarily.

However, the pixel used when generating the color difference information must be the same as the pixel used when generating the luminance information, and the load (weighting value) of the load average used when generating the color difference information is the value of the load average used when generating the luminance information. It must be equal to the load (weight).

For example, in the example of FIG. 7, n = 2, m1 = m2 = 0.5, and A1 = Y3, A2 = Y4, B1 = Cb3, B2 = Cb4, C1 = Cr3, and C2 = Cr4.

In addition, the subpixel unit luminance information storage unit 12 stores, by the subpixel unit luminance information generation unit 11, the luminance information in units of the subpixels generated as described above for one original image data. In addition, the sub-pixel unit color difference information storage unit 15 stores, by the sub-pixel unit color difference information generation unit 14, the color difference information in the unit of sub pixels generated as described above for one original image data.

However, as described above, the subpixel luminance information generating means 11 not only generates the luminance information in the subpixel units by copying the luminance information of the pixel of interest, but also in the method using only the radiation or the load average method. As a result, the luminance information of the pixel adjacent to the pixel of interest is also used to generate the luminance information in units of subpixels.

Thus, smooth display can be realized by finely adjusting the luminance information in units of subpixels by using the luminance information of the pixels adjacent to the pixel of interest.

However, when the luminance information is adjusted in units of subpixels, when color information is not adjusted in units of subpixels, color shift may occur between the image displayed on the display device 3 and the original image. . This point is explained in detail.

It is assumed that the luminance information is adjusted in subpixel units, but the color difference information is not adjusted in subpixel units. The luminance information of the pixel of interest is "Y4", the luminance information of the pixel on the left side is "Y3", and the color difference information of the pixel of interest is "Cr4".

In this case, as shown in Fig. 5 (a), it is assumed that the luminance information of the left subpixel constituting the pixel of interest is generated by copying the luminance information Y3 of the pixel on the left side of the pixel of interest.

In this case, the luminance chrominance synthesizing means 18 combines the luminance information Y3 of the left subpixel, which is the luminance information Y3 of the pixel on the left side, and the color difference information Cr4 of the pixel of interest, to obtain the R value of the left subpixel.

In this case, the R value of the left subpixel is obtained by combining the luminance information and the color difference information of the other pixels.

Here, in the case where the luminance information Y of the left sub-pixel constituting the pixel of interest and the color difference information Cr of the pixel of interest are synthesized to calculate the R value of the left pixel, the luminance chrominance combining means 18 is, for example, R = Y. +1.371 x Cr.

At this time, in the case of Fig. 5A, the R value of the subpixel at the left end becomes R = Y3 + 1.371 x Cr4. If Y3 = 29.1 and Cr4 = -43.9, then R = -46.9, in which case it is clipped to R = 0.

This can occur similarly when obtaining the G value of the center subpixel and the B value of the right end subpixel.

In the image displayed based on the RGB value of the subpixel obtained by clipping in this way, when compared with an original image (image input into display information input means 1), color shift occurs.

Thus, in order to avoid such a situation, color difference information is adjusted in units of subpixels in accordance with adjustment of luminance information in units of subpixels.

That is, as shown in Fig. 5 (a), when the luminance information of the left sub-pixel constituting the pixel of interest is generated by copying the luminance information Y3 of the pixel on the left side of the pixel of interest, the figure is accordingly accordingly. As shown in 5 (b), the color difference information of the left subpixel constituting the pixel of interest is generated by copying the color difference information Cb3 and Cr3 of the pixel on the left side of the pixel of interest.

In this case, the luminance chrominance combining means 18 synthesizes the luminance information Y3 of the left subpixel which is the luminance information Y3 of the left side pixel and the color difference information Cr3 of the left subpixel which is the color difference information Cr3 of the left side pixel. The R value of the left subpixel is obtained.

That is, in this case, the R value of the left subpixel is obtained by combining the luminance information and the color difference information of the same pixel.

For this reason, the above-mentioned clipping is not performed by the luminance chrominance combining means 18. As a result, it is possible to avoid the occurrence of color shift between the image displayed on the basis of the RGB value of the subpixel generated by the luminance chrominance combining means 18 and the original image.

(Filtering)

The filtering processing means 16 performs a filtering process on the luminance information in the subpixel units stored in the subpixel unit luminance information storage means 12, and stores the result in the luminance information storage means 17 after correction. As the filtering process in this case, for example, the filtering process (filtering process disclosed in the literature on subpixel display (title: "Sub Pixel Font Rendering Technology") described above with reference to FIGS. 28 to 32) can be used.

(YCbCr → RGB conversion)

The luminance chrominance synthesizing means 18 uses the luminance information in units of subpixels stored in the luminance information storage unit 17 after correction and the color difference information in units of subpixels stored in the color difference information storage unit 15 in the subpixel units. The value of each subpixel of G and B is calculated, and the calculation result is stored in the display image storage means 4. As shown in FIG.

It demonstrates concretely. The luminance chrominance separating means 6 performs the above equation (Y = 0.299 Xr + 0.587 × g + 0.114 × b, Cb = -0.172 × r-0.339 × g + 0.511 × b, Cr = 0.511 × r-0.428 × g). When the original image data is separated into luminance information Y and chrominance information Cb, Cr using 0.083 × b), each value of r, g, and b is equal to luminance Y, pixel difference Cb, Cr in pixel units. Y + 1.371 x Cr, g = Y-0.698 x Cr + 0.336 x Cb, b = Y + 1.732 x Cb.

By giving this expression in subpixel units, the respective values of R, G, and B in subpixel units are calculated. In addition, this formula is an example and can be substituted by the same formula.

11 is an explanatory diagram in the case of calculating an RGB value from luminance information and color difference information. In FIG. 11, the luminance information (the luminance information of the filtered subpixel unit) of the subpixel unit stored in the luminance information storing means 17 after correction is set to "Y1", "Y2", and "Y3".

The color difference information in the subpixel units stored in the subpixel unit color difference information storage means 15 is set to "Cb1", "Cr1", "Cb2", "Cr2", "Cb3", and "Cr3".

Each value of R, G, and B in subpixel units is calculated with R = Y1 + 1.371 × Cr1, G = Y2-0.698 × Cr2 + 0.336 × Cb2, B = Y3 + 1.732 × Cb3.

(Flow of the whole processing)

Next, the processing flow will be described using the flowchart and the display device of FIG. 12 is a flowchart of the display device of FIG. 1. As shown in FIG. 12, first, in step 1, display information (original image data) is input to display information input means 1. As shown in FIG.

Next, in step 2, the luminance chrominance separating means 6 separates the original image data stored in the original image data storage means 5 into luminance information and chrominance information. Then, the luminance chrominance separating means 6 stores the obtained luminance information and chrominance information in the original image luminance information storage means 7 and the original image chrominance information storage means 8, respectively.

Next, in step 3, the display control means 2 initializes the pixel of interest to the initial position on the upper left, and with the binarization processing means 9, the pixel of interest and its surroundings when the pixel of interest is in the initial position. Binarization of luminance information of a pixel is indicated.

Then, in step 4, the binarization processing means 9 extracts the luminance information of the pixel of interest and the surrounding pixels from the luminance information stored in the original image luminance information storage means 7.

Next, in step 5, the binarization processing means 9 binarizes the luminance information extracted in step 4 by the threshold value, and returns the obtained binary data to the display control means 2.

In doing so, the display control means 2 transfers the received binary data (binarized luminance information) to the triple pattern generating means 10, and commands generation of the triple pattern.

Next, in step 6, the triple pattern generating means 10 selects a triple pattern when the pixel of interest is in the initial position based on the binary data (bitmap pattern) received from the display control means 2. Generate and return the result to the display control means 2,

In doing so, the display control means 2 transfers the received triplex pattern of the pixel of interest to the subpixel-by-pixel luminance information generating means 11, and commands the generation of the luminance information in the subpixel units.

Next, in step 7, the subpixel unit luminance information generating means 11 constitutes the pixel of interest on the basis of the luminance information stored in the original image luminance information storage means 7 according to the triple pattern of the pixel of interest. Luminance information of the two subpixels is generated.

In addition, when generating the luminance information of the three subpixels constituting the pixel of interest, the subpixel unit luminance information generating means 11 uses the luminance information of the pixel adjacent to the pixel of interest or the pixel adjacent to the pixel of interest. When the luminance information is used, information indicating which pixel is used is stored in the used pixel information storage means 13.

Next, in step 8, the subpixel luminance information generating means 11 stores the generated luminance information in the subpixel units in the subpixel luminance information storage means 12.

Next, in step 9, the display control means 2 instructs the subpixel unit chrominance information generation means 14 to generate chrominance information of three subpixels constituting the pixel of interest.

The pixel of interest is then based on the color difference information stored in the original image color difference information storage means 8 while referring to the information stored in the use pixel information storage means 13. Generate color difference information of three subpixels constituting the?.

Next, in step 10, the subpixel unit color difference information generating unit 14 stores the generated subpixel unit color difference information in the subpixel unit color difference information storage unit 15.

The display control means 2 repeatedly executes the processing from step 4 to step 10, updating the pixel of interest (step 12) until the processing for all the pixels of interest is completed (step 11).

When the repetitive processing ends, in step 13, the display control means 2 performs filtering processing on the luminance processing information in the subpixel units stored in the subpixel luminance information storage means 12 to the filtering processing means 16. To run

Next, in step 14, the filtering processing means 16 stores the processed luminance information in units of subpixels in the luminance information storing means 17 after correction.

Next, in step 15, the luminance chrominance synthesizing means 18 stores the luminance information in units of subpixels stored in the luminance information storage means 17 after correction, and the chrominance information storing means 15 in subpixel units. The value of each subpixel of R, G, and B is obtained using color difference information in subpixel units.

Next, in step 16, the luminance chrominance combining means 18 stores the RGB value of the obtained subpixel in the display image storage means 4.

Next, in step 17, the display control means 2 is based on the RGB values of the subpixels stored in the display image storage means 4, respectively, to the three light emitting elements constituting one pixel of the display device 3. The display device 3 is caused to display by assigning a value of the subpixel of.

If the display control means 2 does not end the display (step 18), the processing returns to step 1.

In addition, although the method of performing a binarization process in the unit of pixel of interest was demonstrated in FIG. 12, the binarization process is performed previously with respect to the whole luminance information of the original image stored in the original image luminance information storage means 7, The effect of throughput reduction by binarization can be expected.

(Details of Triple Pattern Generation Method)

Next, the method of generating the triple pattern in the triple pattern generating means 10 of FIG. 1 will be described in detail. The triple pattern generation method includes a method of pattern matching and a method of logical operation. First, a method of pattern matching will be described.

FIG. 13 is an exemplary view of the triple pattern generating means 10 of FIG. 1. As shown in FIG. 13, this triple pattern generation means 10 includes triple pattern determination means 26 and reference pattern storage means 27.

By the way, before the process by the triple pattern generation means 10 comprised in this way, the binarization processing means 9 extracts the brightness information of the pixel of interest and the surrounding pixel from the original image brightness information storage means 7 .

Then, the binarization processing means 9 binarizes the extracted luminance information using a threshold value to obtain a bitmap pattern of the pixel of interest and the pixels around it. The shape of this bitmap is the same as that of the reference pattern contrasted with this.

These patterns are generally defined as shown in FIG. That is, the pixel with the center oblique line is a pixel of interest, and these patterns consist of a total of (2n + 1) x (2m + 1) (n, m is a natural number) pixels surrounding the pixel of interest. And when these patterns can be employ | adopted, it is a power of (2n + 1) x (2m + 1) of 2.

Here, in order to reduce the system burden, it is preferable to set n = m = 1. In this case, these patterns are 3 * 3 pixels, and when these patterns can be employ | adopted, it becomes like 512. Hereinafter, although the case where it is set as 3x3 pixel is demonstrated, it can also change 3x5, 5x5, etc ..

By the way, when the pattern of this 3x3 pixel is all black as shown in FIG.15 (a), as shown in FIG.15 (b), the triple pattern has the center pixel black and adjoins it. The pixel is also black.

On the contrary, when the pattern of these 3x3 pixels is all white as shown in FIG.15 (e), as for the triple pattern, the center pixel is white and adjoins to it as shown in FIG.15 (f). The pixel is also white.

For various patterns that may exist in the middle of these, a rule for determining a triple pattern is prepared in advance. In this case, when all the rules are determined, as described above, the value is 512. However, the rule may be coped with fewer rules in consideration of the case of symmetry or black and white inversion.

As mentioned above, although it is based on the 1st example of performing pattern matching, it can also be modified as follows by expressing this in bits.

That is, as shown in FIG. 16, when black is represented by "0" and white is represented by "1", black and white of a 3x3 pixel is "0" sequentially from the upper left to the lower right of 3x3 pixel. Or a bit string (9 digits) of " 1 ".

And when the pattern of a 3x3 pixel is all black, when it is all black, it can be represented by bit string "000000000", and the triple pattern with this is "000".

Conversely, when the pattern of this 3x3 pixel is all white, when it is all white, it can be represented by bit string "111111111", and the triple pattern with respect to this is "111".

Also in the case of expressing such a bit string, a rule for determining a triple pattern in advance for various patterns that may exist between the bit string "000000000" and the bit string "111111111" is provided in the same manner as described above. In this case, when all the rules are determined, as described above, the number is 512. However, in consideration of the case of symmetry or black and white inversion, a part of the rules may be omitted and the rule may be smaller than 512.

The rules based on these bits are stored in the associated reference pattern storage means 27 in an array or other known storage structure with the bit string as an index. In this way, if the reference pattern storage means 27 is subtracted from the index, the triple pattern to be obtained can be obtained immediately.

As described above, the reference pattern storage means 27 stores the reference pattern in association with the triple pattern.

Of course, there is no problem even if the nine-digit bit string is replaced by another equivalent representation such as hexadecimal display.

In Fig. 13, the triple pattern determining means 26 refers to the reference pattern storage means 27 to determine the triple pattern using pattern matching as shown in Fig. 15 or searching by index as shown in Fig. 16.

Next, a method by a logical operation will be described as a triple pattern generation method.

FIG. 17 is another exemplary view of the triple pattern generating means 10 of FIG. 1. As shown in FIG. 17, this triple pattern generating means 10 includes triple pattern determining means 26 and triple pattern logic calculating means 28.

In the method by the logical operation, unlike the method by the pattern matching, the triple pattern determination rule is not stored but is obtained by the logical operation. Therefore, as shown in FIG. 17, the triple pattern logic calculating means 28 is provided instead of the reference pattern storing means 27 in FIG.

The triple pattern logic calculating means 28 performs a logic operation while referring to the bitmap pattern (binary data) obtained by the binarization processing means 9 to obtain a triple pattern of the pixel of interest.

Referring to Fig. 18, the logical operation of the triple pattern logic calculating means 28 will be described in detail. The triple pattern logic calculating means 28, after FIG. 18 (b), with respect to the center pixel of interest (0, 0) and adjacent pixels (total 3x3 pixels) as shown in FIG. 18 (a). It is composed of a function for performing a conditional judgment of and returning a 3-digit bit value for determining a triple pattern as a regression value with respect to the determination result. Here, after FIG. 18 (b), "*" means that any of black and white may be sufficient.

For example, as shown in Fig. 18B, when both the pixel of interest and the pixel next to it are black, the regression value is "111". As shown in Fig. 18C, the regression value is "000" when both the pixel of interest and the pixel next to it are white.

In addition, Figs. 18 (d), (e), (f), (g),... As described above, the triple pattern logic calculating means 28 is provided with logic capable of arithmetic processing.

Thereby, it can be understood that even in the method by a logical operation, a triple pattern can be determined similarly to the method by pattern matching. In addition, in the method by logical operation, it is not based on a storage area but by a calculation process, and it can make it easy to mount with the apparatus with a severe limitation of a storage area.

It goes without saying that the triple pattern can be generated by the combination of the logical operation method and the pattern matching method. For example, a two-step process may be performed, which is a process performed by the reference pattern storage means 27 and a process performed by the triple pattern logic calculating means 28. At this time, the process before and after the process by the reference pattern storage means 27 and the process by the triple pattern logic calculating means 28 does not become a problem.

By the way, since one pixel is comprised of three subpixels, compared with the case where the luminance information and the chrominance information are stored in the pixel unit, it is tripled when the luminance information and the chrominance information are stored in the subpixel unit. A storage area is needed.

Therefore, the luminance information and the chrominance information in the subpixel units are generated only for the pixel of interest located at the boundary at the time of binarization, whereby the storage area for storing the luminance information and the chrominance information in the subpixel units can be suppressed. That is, the storage capacity of the subpixel unit luminance information storage unit 12 and the subpixel unit color difference information storage unit 15 can be reduced.

In this regard, since the luminance information and the color difference information in subpixel units are generated for all the pixels of interest (Fig. 12), the subpixel unit luminance information storage means 12 and the subpixel unit color difference information storage means ( 15 requires a storage area for storing luminance information and color difference information of three subpixels for all the pixels of interest.

(Example 2)

Next, Example 2 of the present invention will be described. Only the difference with Example 1 is demonstrated about the structure of Example 2. FIG.

19 is a block diagram of a display device according to a second embodiment of the present invention. In the present embodiment, unlike in the first embodiment, the color difference information in the pixel unit is newly generated according to the method of generating the luminance information in the sub pixel unit instead of generating the color difference information in the sub pixel unit. That is, as shown in FIG. 19, instead of the subpixel unit color difference information generating unit 14, the subpixel unit color difference information storage unit 15, and the luminance color difference synthesis unit 18, the color difference information correction unit ( 19), post-correction color difference information storage means 20 and luminance color difference synthesizing means 23 are provided.

First, the color difference information correction process of the color difference information correction means 19 will be described. When the color difference information correction means 19 generates the luminance information of each of the three subpixels constituting the pixel of interest by copying the luminance information of the pixel of interest (for any one of the three subpixels constituting the pixel of interest, When generating the luminance information, when the luminance information of the pixel adjacent to the pixel of interest is not used), the color difference information of the pixel of interest is used as the color difference information after correction of the pixel of interest as it is.

On the other hand, when the color difference information correction means 19 uses the luminance information of the pixel adjacent to the pixel of interest when generating the luminance information for any of the three subpixels constituting the pixel of interest, the color difference information correction means 19 The color difference information after correction | amendment of a pixel is produced | generated by the load average of the color difference information of the pixel adjacent to the pixel of interest, and the color difference information of the pixel of interest.

Hereinafter, a specific example is given and described.

20 is an illustration of a method for generating color difference information after correction of a pixel of interest. As shown in Fig. 4A, when one of the three subpixels constituting the pixel of interest is used to generate the luminance information, when the luminance information of a pixel adjacent to the pixel of interest is not used, As shown in FIG. 20, the color difference information correction means 19 uses the color difference information Cb4 and Cr4 of the pixel of interest as it is as the color difference information Cb and Cr after correction of the pixel of interest.

In addition, the color difference information correction means 19 refers to the use pixel information storage means 13 to generate the luminance information for any one of the three subpixels constituting the pixel of interest. It is determined that the luminance information of the pixel is not used.

21 is another exemplary diagram of a method for generating color difference information after correction of a pixel of interest. As shown in Figs. 5A and 7A, when the luminance information of the left sub-pixel constituting the pixel of interest is used, the luminance information of the pixel on the left side of the pixel of interest is used. As shown in Fig. 2, the color difference information correction means 19 compares the color difference information Cb 'and Cr' after correction of the pixel of interest with the color difference information Cb4 and Cr4 of the pixel of interest and the color difference information Cb3 and Cr3 of the pixel on the left side of the pixel of interest. Generate by load average.

Specifically, the color difference information Cb 'after correction of the pixel of interest is generated as Cb' = 0.5 × Cb3 + 0.5 × Cb4, and the color difference information Cr 'after correction of the pixel of interest is set to Cr' = 0.5 × Cr3 + 0.5 × Cr4. To create.

In addition, the color difference information correction means 19 refers to the use pixel information storage means 13 to generate the luminance information of the pixel on the left side of the pixel of interest when generating the luminance information of the left subpixel constituting the pixel of interest. Figure out what you used.

Incidentally, in the description of FIG. 21, the color difference information after correction of the pixel of interest is generated by the load average, but the equation when calculating the load average is not limited to this.

That is, the equation described in FIG. 10 can be used as the expression of the load average. However, the pixel used when determining the color difference information after correction of the pixel of interest must be the same as the pixel used when determining the luminance information in units of subpixels.

The color difference information storing means 20 after correction stores, by the color difference information correcting means 19, the corrected color difference information of the pixel of interest generated as described above for one original image data.

Next, the luminance chrominance combining process by the luminance chrominance combining means 23 will be described.

The luminance chrominance synthesizing means 23 uses R, G, and B by using the luminance information in units of subpixels stored in the luminance information storage means 17 after correction and the chromatic difference information stored in the color difference information storage means 20 after correction. The value of each subpixel is calculated and the calculation result is stored in the display image storage means 4.

It demonstrates concretely. The luminance chrominance separating means 6 used the formula (Y = 0.299 × r + 0.587 × g + 0.114 × b, Cb = -0.172 × -0.339 × g + 0.511 × b, Cr = 0.511 × r) used in Example 1. When the original image data is separated into luminance information Y and chrominance information Cb, Cr using 0.428 x g-0.883 x b), r, g, b Each value is given as r = Y + 1.371 x Cr, g = Y-0.698 x Cr + 0.336 x Cb, b = Y + 1.732 x Cb.

By giving this expression in subpixel units, the respective values of R, G, and B in subpixel units are calculated. In addition, this formula is an example and can be substituted by the same formula.

22 is an explanatory diagram in the case of calculating an RGB value from luminance information and color difference information after correction | amendment. In Fig. 22, luminance information in units of subpixels (luminance information in units of filtered subpixels) stored in the luminance information storing unit 17 after correction is set to "Y1", "Y2", and "Y3".

Further, the corrected color difference information stored in the corrected color difference information storage means 20 is referred to as "Cb '" and "Cr'".

Each value of R, G, and B in subpixel units is calculated by setting R = Y1 + 1.371 × Cr ', G = Y2-0.698 × Cr' + 0.336 × Cb ', B = Y3 + 1.732 × Cb'. Doing.

By the way, the display image storage means 4 stores the respective values of R, G, and B in subpixel units generated as described above by the luminance chrominance combining means 23.

Next, the processing flow will be described using the flowchart and the display device of FIG. 23 is a flowchart of the display device of FIG. 19.

In the description of the flowchart of FIG. 23, only differences from the flowchart of FIG. 12 in the first embodiment will be described.

In the flowchart of Fig. 23, step 9 (color difference) instead of step 9 (subpixel unit color difference information generation) and step 10 (subpixel unit color difference information storage means 15) of the flowchart of Fig. 12 according to the first embodiment. Information correction processing) and step 10 (storage in the color difference information storage means 20 after correction) are provided.

Therefore, the processing from Step 1 to Step 8 is the same as in FIG. Then, in step 9, the display control means 2 instructs the color difference information correction means 19 to generate color difference information after correction of the pixel of interest.

In doing so, the color difference information correction means 19 refers to the information stored in the used pixel information storage means 13, and the color difference after correction of the pixel of interest based on the color difference information stored in the original image color difference information storage means 8; Generate information.

Next, in step 10, the color difference information correcting means 19 stores the generated corrected color difference information in the corrected color difference information storing means 20.

Processing from Step 11 to Step 14 is the same as in FIG. Then, in step 15, the luminance chrominance synthesizing means 23 performs luminance information on a subpixel basis stored in the luminance information storage means 17 after correction and the corrected chrominance difference stored in the color difference information storage means 20 after correction. The value of each subpixel of R, G, and B is obtained using the information.

Next, in step 16, the luminance chrominance combining means 23 stores the RGB values of the obtained subpixels in the display image storage means 4. The processing from step 17 to step 18 is the same as in FIG.

However, as explained so far, in the present embodiment, the color difference information correction means 19 generates the color difference information after correction of the pixel of interest using the same pixel as that of generating the luminance information in the unit of the subpixels.

For this reason, color shift | offset | difference can be suppressed between the chopped image which makes the display device 3 display subpixel, and the chopped image (original image) of the input pixel unit. This point is the same as in Example 1.

In addition, in the present embodiment, the following effects are obtained. This point is demonstrated, comparing with Example 1. FIG.

In this embodiment, the color difference information after correction of the pixel of interest generated by the color difference information correction means 19 is color difference information in units of pixels.

In contrast, in Embodiment 1, the subpixel unit color difference information generating unit 14 (Fig. 1) generates the color difference information in units of subpixels. And one pixel is comprised by three subpixels. Therefore, in this case, the data amount is tripled as compared with the case of generating color difference information in pixel units.

As a result, in the present embodiment, the storage area for storing the color difference information can be suppressed as compared with the first embodiment. Specifically, the storage capacity of the color difference information storage means 20 after correction in this embodiment ends with 1/3 of the storage capacity of the color difference information storage means 15 (Fig. 1) of the subpixel unit of the first embodiment.

In addition, the luminance information in units of subpixels and the color difference information after correction of the pixel of interest may be generated only for the pixel of interest positioned at the boundary at the time of binarization.

In this case, a storage area for storing the corrected color difference information and the luminance information in sub-pixel units is compared with the case of generating the corrected color difference information and the luminance information in sub-pixel units for all the pixels of interest. It can be suppressed. That is, the storage capacity of the color difference information storage means 20 after correction and the luminance information storage means 12 in units of subpixels can be reduced.

(Example 3)

Next, Example 3 of the present invention will be described. Only the difference with Example 1 is demonstrated about the structure of Example 3. FIG.

24 is a block diagram of a display device according to a third embodiment of the present invention. In the present embodiment, unlike the first embodiment, the luminance information and the chrominance information in subpixel units are not generated in accordance with the triple pattern obtained from the bitmap pattern of the pixel of interest and its surrounding pixels, but are uniformly served by the load average. Luminance information and color difference information in pixel units are generated.

That is, as shown in FIG. 24, with respect to FIG. 1, the binarization processing means 9, the triple pattern generation means 10, the subpixel unit brightness information generation means 11, and the utilization pixel information storage means 13 And instead of the subpixel unit color difference information generating unit 14, the subpixel unit luminance information generating unit 21 and the subpixel unit color difference information generating unit 22 are provided.

First, the luminance information generating process of the subpixel unit luminance information generating means 21 will be described.

The subpixel unit luminance information generating unit 21 generates the luminance information of the subpixels constituting the pixel of interest by taking a load average between the luminance information of the pixel of interest and the luminance information of the pixel adjacent to the pixel of interest. .

In addition, the subpixel unit luminance information generating unit 21 generates the luminance information of the central subpixel constituting the pixel of interest by copying the luminance information of the pixel of interest.

Next, the color difference information generation process of the sub pixel unit color difference information generation means 22 will be described.

The subpixel unit color difference information generating means 22 generates the color difference information of the subpixels constituting the pixel of interest by taking a load average between the color difference information of the pixel of interest and the color difference information of a pixel adjacent to the pixel of interest. .

However, the pixel used when generating the color difference information must be the same as the pixel used when generating the luminance information, and the load (weighting value) of the load average used when generating the color difference information is the value of the load average used when generating the luminance information. It must be equal to the load (weight).

In addition, the subpixel unit color difference information generating means 22 generates the color difference information of the center subpixel constituting the pixel of interest by copying the color difference information of the pixel of interest.

Hereinafter, a specific example is given and described.

Fig. 25 is an explanatory diagram when generating luminance information and color difference information in subpixel units by load average. FIG. 25A shows an example of luminance information generation, and FIG. 25B shows an example of color difference information generation.

As shown in Fig. 25A, the subpixel unit luminance information generating unit 21 receives the luminance information Y 'of the left sub-pixel constituting the pixel of interest, and the luminance information Y0 of the pixel on the left side of the pixel of interest and the pixel of interest. It is generated by the load average with the luminance information Y1 of the pixel.

That is, the luminance information Y 'of the left sub-pixel constituting the pixel of interest is generated as Y' = 0.5 x Y0 + 0.5 x Y1.

In addition, the subpixel unit luminance information generating unit 21 similarly generates the luminance information Y ″ of the right end subpixel constituting the pixel of interest by the load average.

In addition, the subpixel unit luminance information generating unit 21 generates the luminance information of the central subpixel constituting the pixel of interest by copying the luminance information Y1 of the pixel of interest.

As shown in FIG. 25 (b), the subpixel unit color difference information generating means 22 draws the color difference information Cb 'of the left subpixel constituting the pixel of interest, and the color difference information Cb0 of the pixel on the left side of the pixel of interest. It produces | generates by the load average with the color difference information Cb1 of a pixel.

In other words, the color difference information Cb 'of the left subpixel constituting the pixel of interest is generated as Cb' = 0.5 x Cb0 + 0.5 x Cb1.

Further, the subpixel unit color difference information generating means 22 loads the color difference information Cr 'of the left subpixel constituting the pixel of interest and the color difference information Cr0 of the pixel on the left side of the pixel of interest and the color difference information Cr1 of the pixel of interest. Produced by average.

That is, color difference information Cr 'of the left subpixel constituting the pixel of interest is generated as Cr' = 0.5 x Cr0 + 0.5 x Cr1.

The subpixel unit color difference information generating means 22 generates the color difference information Cb ″, Cr ″ of the right end subpixel constituting the pixel of interest by a load average in the same manner.

In addition, the subpixel unit luminance information generating unit 21 generates the luminance information of the central subpixel constituting the pixel of interest by copying the luminance information Cb1 and Cr1 of the pixel of interest.

Fig. 26 is an explanatory diagram when generating luminance information and color difference information in subpixel units by different load averages. Fig. 26A shows an example of luminance information generation and Fig. 26B shows an example of color difference information generation.

As shown in Fig. 26A, the subpixel unit luminance information generating unit 21 obtains the luminance information Y 'of the left subpixel constituting the pixel of interest, and the luminance information Y0 of the pixel on the left side of the pixel of interest. It is generated by the load average with the luminance information Y1 of the pixel.

In other words, the luminance information Y 'of the left subpixel constituting the pixel of interest is generated as Y' = (1 x Y0 + 2 x Y1) / 3.

In addition, the subpixel unit luminance information generating unit 21 similarly generates the luminance information Y ″ of the right end subpixel constituting the pixel of interest by the load average.

In addition, the subpixel unit luminance information generating unit 21 generates the luminance information of the central subpixel constituting the pixel of interest by copying the luminance information Y1 of the pixel of interest.

As shown in FIG. 26 (b), the subpixel unit color difference information generating means 22 draws the color difference information Cb 'of the left subpixel constituting the pixel of interest, and the color difference information Cb0 of the pixel on the left side of the pixel of interest. It produces | generates by the load average with the color difference information Cb1 of a pixel.

That is, color difference information Cb 'of the left subpixel constituting the pixel of interest is generated with Cb' = (1 x Cb0 + 2 x Cb1) / 3.

Further, the subpixel unit color difference information generating means 22 loads the color difference information Cr 'of the left subpixel constituting the pixel of interest and the color difference information Cr0 of the pixel on the left side of the pixel of interest and the color difference information Cr1 of the pixel of interest. Produced by average.

That is, color difference information Cr 'of the left subpixel constituting the pixel of interest is generated with Cr' = (1 x Cr0 + 2 x Cr1) / 3.

The subpixel unit color difference information generating means 22 generates the color difference information Cb ″, Cr ″ of the right end subpixel constituting the pixel of interest by a load average in the same manner.

In addition, the subpixel unit luminance information generating unit 21 generates the luminance information of the central subpixel constituting the pixel of interest by copying the luminance information Cb1 and Cr1 of the pixel of interest.

In the description of Figs. 25 and 26, luminance information and color difference information are generated by the load average, but the equations for calculating the load average are not limited to these.

That is, the equation described in FIG. 10 can be used as the expression of the load average. However, the pixel used for determining the color difference information in the subpixel unit must be the same as the pixel used for determining the luminance information in the subpixel unit, and the load (weighting value) used for determining the color difference information in the subpixel unit is It must be equal to the load (weighting value) used when determining the luminance information.

Next, the flow of processing will be described using the flowchart and the display device of FIG.

27 is a flowchart of the display device of FIG. 24. In the description of the flowchart of FIG. 27, only differences from the flowchart of FIG. 12 in the first embodiment will be described.

In the flowchart of FIG. 27, steps 4 to 9 are provided instead of steps 4 to 10 of the flowchart of FIG. 12 according to the first embodiment.

Therefore, the processing from Step 1 to Step 3 is the same as in FIG. Then, in step 4, the subpixel unit luminance information generating unit 21 extracts the luminance information of the pixel of interest and the pixel adjacent thereto from the luminance information stored in the original image luminance information storage unit 7.

Next, in step 5, the subpixel unit luminance information generating unit 21 loads the luminance information of the subpixels constituting the pixel of interest with the luminance information of the pixel of interest and the luminance information of the pixel adjacent to the pixel of interest. Produced by average.

In addition, the subpixel unit luminance information generating unit 21 generates the luminance information of the central subpixel constituting the pixel of interest by copying the luminance information of the pixel of interest.

Next, in step 6, the subpixel luminance information generating means 21 stores the generated luminance information in the subpixel unit luminance information storage means 12 in the subpixel unit.

Next, in step 7, the subpixel unit color difference information generating means 22 extracts the color difference information of the pixel of interest and the pixel adjacent to it from the color difference information stored in the original image color difference information storing means 8.

Next, in step 8, the subpixel unit color difference information generating means 22 loads the color difference information of the subpixels constituting the pixel of interest with the color difference information of the pixel of interest and the color difference information of a pixel adjacent to the pixel of interest. Produced by average.

In addition, the subpixel unit color difference information generating means 22 generates the color difference information of the center subpixel constituting the pixel of interest by copying the color difference information of the pixel of interest.

Next, in step 9, the subpixel unit color difference information generating means 22 stores the generated subpixel unit color difference information in the subpixel unit color difference information storage means 15. Then, the processing of steps 10 to 17 is executed.

As described above, in the present embodiment, in addition to generating luminance information in subpixel units, color difference information in subpixel units is also generated. In this case, since color difference information in subpixel units is generated using the same pixel as that of generating luminance information in subpixel units, the chopped image for displaying the subpixels on the display device 3 and the chopped units in the input pixel unit. The occurrence of color shift between images (original picture) can be suppressed. This point is the same as in Example 1.

In addition, in the present embodiment, the following effects are obtained. This point is demonstrated, comparing with Example 1. FIG.

In Embodiment 1, as shown in FIG. 1, the binarization processing means 9 and the triple pattern generation means 10 are provided, and the pixel of interest and the surrounding pixel are binarized to obtain a bitmap pattern, and based on this, 3 Create a pear pattern. When generating luminance information in units of subpixels, it is determined whether or not to use luminance information of a pixel adjacent to the pixel of interest with reference to the triple pattern.

In contrast, in the present embodiment, among the three subpixels constituting the pixel of interest, the luminance information of the pixel of interest and the luminance of pixels adjacent to the pixel of interest are uniformly determined for the predetermined subpixel (the subpixels at both ends). Luminance information is generated by taking the load average with the information.

Therefore, in the present embodiment, as in the first embodiment, the processes of binarization, triple pattern generation, and triple pattern reference are unnecessary, and the throughput can be reduced.

In the present embodiment, among the three subpixels constituting the pixel of interest, the color difference between the pixel of interest and the adjacent pixel, which is the pixel used when generating the luminance information, is uniformly determined for the predetermined subpixel (the subpixels at both ends). Color difference information is generated by taking the load average of the information.

For this reason, like the first embodiment, it is not necessary to provide the use pixel information storage means 13 and refer to this to create color difference information in subpixel units. As a result, the throughput can be reduced.

Further, the luminance information and the color difference information in subpixel units may be generated only for the pixel of interest located at the boundary at the time of binarization.

This makes it possible to suppress the storage area for storing the luminance information and the chrominance information in the subpixel units as compared with the case of generating the luminance information and the chrominance information in the subpixel units for all the pixels of interest. That is, the storage capacity of the subpixel unit luminance information storage unit 12 and the subpixel unit color difference information storage unit 15 can be reduced.

As described above, according to the present invention, a display method and a display device capable of suppressing color shift with the original image when subpixel display is performed based on the chopped image data in pixel units can be obtained.

Claims (12)

Three light emitting elements each emitting RGB three primary colors are arranged in a predetermined order to form one pixel, and the pixels are arranged in a first direction to form one line, and the lines are arranged in the first direction. In the display method which displays in the display device which comprises a plurality in the orthogonal 2nd direction, and comprises a display screen, Inputting the chopped image data in pixel units, and separating the input chopped image data into luminance information in pixel units and color difference information in pixel units; Generating luminance information of three sub-pixels constituting the pixel of interest using the luminance information of the pixel adjacent to the pixel of interest and the luminance information of the pixel of interest by inputting the luminance information of the pixel unit; By using the color difference information of the pixel unit and inputting the color difference information of the pixel unit, using the color difference information of the pixel adjacent to the pixel of interest and the color difference information of the pixel of interest, Generating color difference information; The RGB values of the three subpixels generated based on the luminance information and the color difference information of the three subpixels constituting the pixel of interest are assigned to the three light emitting elements constituting the one pixel to display the display on the display device. Comprising acts of doing Display method characterized in that. Three light emitting elements each emitting RGB three primary colors are arranged in a predetermined order to form one pixel, and the pixels are arranged in a first direction to form one line, and the second orthogonal line is perpendicular to the first direction. In the display method which displays in the display device which comprises a plurality in the direction and comprises a display screen, Inputting the chopped image data in pixel units, and separating the input chopped image data into luminance information in pixel units and color difference information in pixel units; Generating luminance information of three sub-pixels constituting the pixel of interest using the luminance information of the pixel adjacent to the pixel of interest and the luminance information of the pixel of interest by inputting the luminance information of the pixel unit; The color difference information of the pixel adjacent to the pixel of interest and the color difference information of the pixel of interest, which are pixels used when inputting the color difference information of the pixel unit and generating luminance information of three subpixels constituting the pixel of interest, Generating color difference information after correction of the pixel of interest; The RGB values of the three subpixels generated based on the color difference information after correction of the pixel of interest and the luminance information of the three subpixels constituting the pixel of interest are assigned to the three light emitting elements of one pixel. Causing an indication to the device; Display method characterized in that. Three light emitting elements each emitting RGB three primary colors are arranged in a predetermined order to form one pixel, and the pixels are arranged in a first direction to form one line, and the second orthogonal line is perpendicular to the first direction. In the display method which displays in the display device which comprises a plurality in the direction and comprises a display screen, Inputting the chopped image data in pixel units, and separating the input chopped image data into luminance information in pixel units and color difference information in pixel units; The luminance information of the pixel of interest and the pixels adjacent to the pixel of interest are uniformly applied to the two subpixels of the three subpixels constituting the pixel of interest and excluding the center subpixel among the three subpixels of the pixel unit. Generating luminance information using the luminance information, and generating luminance information of the center subpixel by copying luminance information of the pixel of interest; Of the three subpixels constituting the pixel of interest by inputting the color difference information in the pixel unit, two pixels of the pixel except for the center subpixel are uniformly used as the pixels used when generating luminance information and the adjacent pixels. Generating color difference information using color difference information of a pixel to be generated, and generating color difference information of a central subpixel by copying color difference information of a pixel of interest; The RGB values of the three subpixels, which are generated based on the luminance information and the color difference information of the three subpixels constituting the pixel of interest, are assigned to the three light emitting elements constituting the one pixel to display on the display device. Comprising the step of Display method characterized in that. The method of claim 1, The luminance information and the color difference information of the subpixels constituting the pixel of interest are generated for the pixel of interest located at the boundary at the time of binarization. The method of claim 2, And the luminance information of the subpixel constituting the pixel of interest and the color difference information after correction of the pixel of interest are generated for the pixel of interest located at the boundary at the time of binarization. The method of claim 3, wherein The luminance information and the color difference information of the subpixels constituting the pixel of interest are generated for the pixel of interest located at the boundary at the time of binarization. Three light emitting elements each emitting RGB three primary colors are arranged in a predetermined order to form one pixel, and the pixels are arranged in a first direction to form one line, and the second orthogonal line is perpendicular to the first direction. A display device configured to constitute a display screen by providing a plurality in a direction; Luminance chrominance separating means for inputting the chopped image data in pixel units and separating the input chopped image data into luminance information in pixel units and chrominance information in pixels; Generates luminance information in subpixel units by inputting luminance information of the pixel unit to generate luminance information of three subpixels constituting the pixel of interest using the luminance information of the pixel adjacent to the pixel of interest and the luminance information of the pixel of interest. Sudan, By using the color difference information of the pixel unit and inputting the color difference information of the pixel unit, using the color difference information of the pixel adjacent to the pixel of interest and the color difference information of the pixel of interest, Sub-pixel color difference information generating means for generating color difference information; The RGB values of the three subpixels generated based on the luminance information and the color difference information of the three subpixels constituting the pixel of interest are assigned to the three light emitting elements constituting the one pixel to display the display on the display device. With display control means for performing Display device characterized in that. Three light emitting elements each emitting RGB three primary colors are arranged in a predetermined order to form one pixel, and the pixels are arranged in a first direction to form one line, and the second orthogonal line is perpendicular to the first direction. A display device configured to constitute a display screen by providing a plurality in a direction; Luminance chrominance separating means for inputting the chopped image data in pixel units and separating the input chopped image data into luminance information in pixel units and chrominance information in pixels; Generates luminance information in subpixel units by inputting luminance information of the pixel unit to generate luminance information of three subpixels constituting the pixel of interest using the luminance information of the pixel adjacent to the pixel of interest and the luminance information of the pixel of interest. Sudan, The color difference information of the pixel adjacent to the pixel of interest and the color difference information of the pixel of interest, which are pixels used when inputting the color difference information of the pixel unit and generating luminance information of three subpixels constituting the pixel of interest, Color difference information correction means for generating color difference information after correction of the pixel of interest; The RGB values of the three subpixels generated based on the color difference information after correction of the pixel of interest and the luminance information of the three subpixels constituting the pixel of interest are assigned to the three light emitting elements of one pixel. With display control means for causing the device to display Display device characterized in that. Three light emitting elements each emitting RGB three primary colors are arranged in a predetermined order to form one pixel, and the pixels are arranged in a first direction to form one line, and the second orthogonal line is perpendicular to the first direction. A display device configured to constitute a display screen by providing a plurality in a direction; Luminance chrominance separating means for inputting the chopped image data in pixel units and separating the input chopped image data into luminance information in pixel units and chrominance information in pixels; The luminance information of the pixel of interest and the pixels adjacent to the pixel of interest are uniformly applied to the two subpixels of the three subpixels constituting the pixel of interest and excluding the center subpixel among the three subpixels of the pixel unit. Luminance information generation means for generating luminance information by using luminance information, and the luminance information of the central subpixel is generated by copying luminance information of the pixel of interest; Of the three subpixels constituting the pixel of interest by inputting the color difference information in the pixel unit, two pixels of the pixel except for the center subpixel are uniformly used as the pixels used when generating luminance information and the adjacent pixels. Color difference information generation means for generating color difference information by using color difference information of pixels to be used, and color difference information of a central subpixel is generated by copying color difference information of a pixel of interest; The RGB values of the three subpixels, which are generated based on the luminance information and the color difference information of the three subpixels constituting the pixel of interest, are assigned to the three light emitting elements constituting the one pixel to display on the display device. With display control means Display device characterized in that. The method of claim 7, wherein The luminance information and the color difference information of the subpixels constituting the pixel of interest are generated for the pixel of interest located at the boundary at the time of binarization. The method of claim 8, And luminance information of sub-pixels constituting the pixel of interest and color difference information after correction of the pixel of interest are generated for the pixel of interest positioned at a boundary at the time of binarization. The method of claim 9, The luminance information and the color difference information of the subpixels constituting the pixel of interest are generated for the pixel of interest located at the boundary at the time of binarization.