Picture display method of display module in DSC compression mode

Abstract

The invention discloses a picture display method for a display module in a DSC compression mode, and the method comprises the following steps: 1, compressing a DSC picture; step 2, DSC picture storage; and step 3, reading the DSC picture, in the step 1, compressing the manufactured DSC picture by corresponding platform compression Slice, and preparing for storage work after the compression is completed, in the step 2, storing the compressed DSC picture in a memory card or Flash of the test fixture, and in the step 3, calling a decompression code, and reading the corresponding Nth DSC compressed picture in the memory card or Flash. By reducing the size of the DSC compressed picture, one picture can be filled with 300 pure colors or flicker pictures, in this way, only 3-4 256-order gamma for storing WRGB can be stored, original 256 * 4 is not needed, the effect of reducing the use amount of a storage memory of the jig is achieved, the storage pressure of the jig is reduced, and meanwhile it can be guaranteed that the display effect is consistent with the normal effect.

Description

Technical Field

[0001] The present invention relates to the technical field of display modules, and in particular to a method for displaying pictures in a DSC compression mode of a display module. Background Art

[0002] DSC compression stands for image compression transmission. It is a technology that compresses image data before transmission, achieving high-resolution content output with low bandwidth, and the compressed image performance is visually distortion-free and low-latency.

[0003] As users pursue higher refresh rates for mobile phones, mobile phones are no longer satisfied with the previous 60hz. More and more 90hz, 120hz, and 144hz high refresh rates are appearing. However, for the FHD+ high refresh rate Dphy display mode, the existing platform cannot support its mipi rate, and will use DSC compression to send images. Commonly used compressions are 1 / 3 compression and 1 / 2 compression, which can reduce the mipi speed.

[0004] However, when using the DSC compression method, the platform needs to store the DSC compressed image first, and then the fixture calls the image, and restores the image through the decompression code and displays it on the display. The fixture will use storage to store the image, and has high requirements for storage. Although 1 / 3 compression will reduce the image size, there are 256*4 WRGB test gamma images, and various characters and symbols need to be displayed. One image can only store and display one corresponding character, which takes up more fixture storage space. Summary of the invention

[0005] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0006] To achieve the above object, the present invention provides the following technical solution: a method for displaying pictures in a display module DSC compression mode, comprising the following steps: step 1, DSC picture compression; step 2, DSC picture storage; step 3, reading DSC picture.

[0007] As a further solution of the present invention: in step 1, the prepared DSC picture is first compressed by the corresponding platform compression Slice, and after the compression is completed, it is prepared for storage.

[0008] As a further solution of the present invention: in step 2, the compressed DSC image is stored in a memory card or Flash of the test fixture.

[0009] As a further solution of the present invention: after the DSC pictures are stored, the DSC pictures can be backed up and retained.

[0010] As a further solution of the present invention: in step 3, the decompression code is called to read the corresponding Nth DSC compressed picture in the memory card or Flash.

[0011] As a further solution of the present invention: in step 3, when pure white needs to be displayed, the first Slice, 0-7 rows of pixels, needs to be called, and then the entire surface from top to bottom on the display screen is filled, so that a pure white picture can be completely displayed on the display screen, and other pure colors or flicker pictures are similar.

[0012] As a further solution of the present invention: Step 4, if text characters need to be displayed, first display a pure white picture, and then retrieve the corresponding character slice image and display it at the corresponding position of the pure white picture.

[0013] As a further solution of the present invention: in step 4, the position of the characters on the display screen can be set arbitrarily.

[0014] As a further solution of the present invention: in step 1, the size of the DSC picture is consistent with the size of the screen resolution.

[0015] As a further solution of the present invention: the DSC image is divided into several rows in the vertical direction according to the platform compression Slice size, such as Slice=8, which means 8 rows of pixels are compressed and can be divided into 2400 / 8=300 rows, and each row is filled with color, which can be a solid color or a flicker picture.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In this application, by reducing the size of DSC compressed images, one image can fill 300 pure colors or flicker images. In this way, only 3-4 images are needed to store the 256-order gamma of WRGB, and the original 256*4 is not needed. This reduces the usage of fixture storage memory and reduces the fixture storage pressure, while ensuring that the display effect is consistent with the normal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a DSC compression picture of the present invention;

[0019] Figure 2 The present invention Figure 1 A schematic diagram of the structure in which 8 rows of pixels are compressed;

[0020] Figure 3 It is a schematic diagram of the structure in which each row of Slice displays text or symbols in the present invention;

[0021] Figure 4 The present invention Figure 3Schematic diagram showing text character 1. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-4 A method for displaying an image in a DSC compression mode of a display module includes the following steps: step 1, DSC image compression; step 2, DSC image storage; step 3, reading the DSC image.

[0024] In step 1, the prepared DSC image is first compressed by the corresponding platform compression Slice, and after the compression is completed, it is prepared for storage.

[0025] In step 2, the compressed DSC image is stored in the memory card or Flash of the test fixture.

[0026] After DSC images are stored, they can be backed up and retained.

[0027] In step 3, the decompression code is called to read the corresponding Nth DSC compressed picture in the memory card or Flash.

[0028] In step 3, when pure white is needed, the first Slice needs to be called, 0-7 rows of pixels, and then the entire display screen is filled from top to bottom. In this way, a pure white picture can be completely displayed on the display screen, and other pure colors or flicker pictures are similar.

[0029] Step 4: If text characters need to be displayed, first display a pure white image, and then retrieve the corresponding character slice image and display it at the corresponding position of the pure white image.

[0030] In step 4, the position of the characters on the display screen can be set arbitrarily.

[0031] In step 1, the size of the DSC image is consistent with the screen resolution.

[0032] The DSC image is divided into several rows vertically according to the platform compression slice size. For example, Slice=8 means 8 rows of pixels are compressed, which can be divided into 2400 / 8=300 rows. Each row is filled with color, which can be a solid color or a flicker screen.

[0033] In summary:

[0034] 1. Compress the prepared DSC image into the corresponding platform Slice, and then store it in the memory card or Flash of the test fixture;

[0035] 2. Call the decompression code, read the corresponding DSC compressed image (the number of the image) in the memory card or Flash, and retrieve the position of the slice to be displayed. For example, if you need to display pure white, you need to call the first Slice of the first image (that is, 0-7 rows of pixels), and then fill the entire surface from top to bottom on the display screen. In this way, the pure white image can be completely displayed on the display screen. Other pure color or flicker images are similar.

[0036] 3. If you need to display text characters, first display a pure white picture, and then call up the corresponding character slice image to display it at the corresponding position of the pure white picture. The position of the characters on the display screen can also be set arbitrarily.

[0037] like Figure 1 As shown, the image size is consistent with the screen resolution (such as 1080*2400), and the vertical direction is divided into several rows according to the platform compression Slice size, such as Slice=8 (representing 8 rows of pixels for compression, such as Figure 2 ), can be divided into 2400 / 8=300 rows, and each row is filled with color (pure color or flicker screen). For example, the first row Slice is white, the second row Slice is red, the fifth row Slice is 127 gray, etc. In this way, one picture can be filled with 300 pure colors or flicker screens. In this way, only 3-4 slices are needed to store the 256-level gamma of WRGB, and the original 256*4 is not needed.

[0038] Furthermore, if Figure 3 As shown, each Slice row can also display a text or symbol.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A method for displaying pictures in a DSC compression mode of a display module, characterized in that: The following steps are included: Step 1, DSC image compression; Step 2, DSC picture storage; Step 3: Read the DSC image.

2. The method for displaying pictures in a DSC compression mode of a display module according to claim 1, characterized in that: In step 1, the prepared DSC image is first compressed by the corresponding platform compression Slice, and after the compression is completed, it is prepared for storage.

3. The method for displaying pictures in a DSC compression mode of a display module according to claim 1, characterized in that: In step 2, the compressed DSC image is stored in the memory card or Flash of the test fixture.

4. The method for displaying pictures in a DSC compression mode of a display module according to claim 3, characterized in that: After the DSC images are stored, they can be backed up and retained.

5. The method for displaying pictures in a DSC compression mode of a display module according to claim 1, characterized in that: In step 3, the decompression code is called to read the corresponding Nth DSC compressed picture in the memory card or Flash.

6. The method for displaying pictures in a DSC compression mode of a display module according to claim 1, characterized in that: In step 3, when pure white is needed, the first Slice needs to be called, 0-7 rows of pixels, and then the entire display screen is filled from top to bottom. In this way, a pure white picture can be completely displayed on the display screen, and other pure colors or flicker pictures are similar.

7. The method for displaying pictures in a DSC compression mode of a display module according to claim 1, characterized in that: Step 4: If text characters need to be displayed, first display a pure white image, and then retrieve the corresponding character slice image and display it at the corresponding position of the pure white image.

8. The method for displaying pictures in a DSC compression mode of a display module according to claim 7, characterized in that: In step 4, the position of the characters on the display screen can be set arbitrarily.

9. The method for displaying pictures in a DSC compression mode of a display module according to claim 1, characterized in that: In step 1, the size of the DSC image is consistent with the screen resolution.

10. The method for displaying pictures in a DSC compression mode of a display module according to claim 1, characterized in that: The DSC image is divided into several rows vertically according to the platform compression slice size. For example, Slice=8 means 8 rows of pixels are compressed, which can be divided into 2400 / 8=300 rows. Each row is filled with color, which can be a solid color or a flicker screen.

Images