阅读说明：本技术 显示控制方法、显示控制电路及显示装置 (Display control method, display control circuit and display device ) 是由 陈志昌 蔡欣蓓 蔡周良 梁汉源 严青山 于 2021-08-20 设计创作，主要内容包括：本申请提供一种显示控制方法,包括：接收第一图像数据,压缩所述第一图像数据并存储；接收第二图像数据；获取所述第一图像数据与所述第二图像数据之间的相关性数据并存储；根据所述相关性数据压缩所述第二图像数据；根据所述相关性数据解压缩所述第一图像数据和所述第二图像数据,以显示一帧图像。本申请还提供一种显示控制电路及显示装置。(The application provides a display control method, comprising: receiving first image data, compressing the first image data and storing the first image data; receiving second image data; acquiring and storing correlation data between the first image data and the second image data; compressing the second image data according to the correlation data; decompressing the first image data and the second image data according to the correlation data to display one frame image. The application also provides a display control circuit and a display device.)

1. A display control method, comprising:

receiving first image data, compressing the first image data and storing the first image data;

receiving second image data;

acquiring and storing correlation data between the first image data and the second image data;

compressing the second image data according to the correlation data;

decompressing the first image data and the second image data according to the correlation data to display one frame image.

2. The display control method according to claim 1, further comprising, after the step of receiving the second image data:

acquiring position information and size information of the second image data;

judging whether to compress the second image data according to the position information and the size information of the second image data;

the step of obtaining the correlation data between the first image data and the second image data specifically includes:

if the first image data and the second image data are judged to be the same, the correlation data between the first image data and the second image data are obtained.

3. The display control method of claim 2, wherein if no, the first image data is decompressed to display the frame of image.

4. The display control method according to claim 2, wherein the step of acquiring and storing the correlation data between the first image data and the second image data, if determined as yes, specifically comprises:

if the judgment result is yes, determining a related area of the first image data and the second image data;

and acquiring and storing correlation data between the first image data and the second image data according to the correlation area.

5. The display control method according to any one of claims 1 to 4, wherein the first image data and the second image data are compressed in a predictive coding compression manner.

6. The display control method according to any one of claims 1 to 4, wherein the step of decompressing the first image data and the second image data according to the correlation data to display one frame of image specifically comprises:

updating the compressed first image data according to the compressed second image data to generate target image data, wherein the target image data comprises the compressed second image data and a compressed part of the first image data;

decoding the target image data based on the correlation data to display the one frame image.

7. A display control circuit, comprising:

a compression module for receiving and compressing the first image data and the second image data;

the first storage module is electrically connected with the compression module and is used for storing the compressed first image data and the compressed second image data;

a correlation data acquisition module, configured to receive the second image data and acquire correlation data between the first image data and the second image data;

the second storage module is electrically connected with the correlation data acquisition module and is used for storing the correlation data;

and the decompression module is electrically connected with the first storage module and the second storage module and used for reading the correlation data, decompressing and outputting the compressed first image data and the compressed second image data according to the correlation data, wherein the decompressed first image data and the decompressed second image data are used for displaying one frame of image.

8. The display control circuit of claim 7, further comprising:

a position information acquisition module for acquiring position information and size information of the second image data; and

and the compression control module is electrically connected with the position information and size information acquisition module and the correlation data acquisition module respectively, and is used for judging whether the second image data is compressed according to the position information and size information of the second image data, and if so, controlling the correlation data acquisition module to acquire correlation data between the first image data and the second image data.

9. The display control circuit according to claim 7, wherein the first storage module is specifically configured to update the compressed first image data according to the compressed second image data to generate target image data, and the target image data includes the compressed second image data and a compressed portion of the first image data;

the decompression module is specifically configured to: decoding the target image data based on the correlation data to display the one frame image.

10. A display device comprising a display panel and a display control circuit which are electrically connected, the display control circuit being according to any one of claims 7 to 9, the display control circuit being configured to output the decompressed first image data and the decompressed second image data, the display panel being configured to display one frame of image based on the decompressed first image data and the decompressed second image data.

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a display control method, a display control circuit using the display control method, and a display device including the display control circuit.

Background

A conventional display apparatus includes a storage device for storing compressed image data. The display device is used for decompressing the image data in the storage device to display the image. One conventional method of compressing image data is a predictive coding compression method. The predictive coding compression method is beneficial to obtaining higher compression rate and better compression effect.

The image displayed by the display device is updated over time. In some cases, the entire image displayed by the display device needs to be updated. In other cases, only a portion of the content of the image displayed by the display device needs to be updated.

Since the display apparatus compresses image data using a predictive coding compression method, when only a part of the contents of an image displayed by the display apparatus needs to be updated, the compressed image data stored in the storage device is difficult to be smoothly decoded.

Disclosure of Invention

A first aspect of the present application provides a display control method, including:

receiving first image data, compressing the first image data and storing the first image data;

receiving second image data;

acquiring and storing correlation data between the first image data and the second image data;

compressing the second image data according to the correlation data;

decompressing the first image data and the second image data according to the correlation data to display one frame image.

A second aspect of the present application provides a display control circuit comprising:

a compression module for receiving and compressing the first image data and the second image data;

the first storage module is electrically connected with the compression module and is used for storing the compressed first image data and the compressed second image data;

a correlation data acquisition module, configured to receive the second image data and acquire correlation data between the first image data and the second image data;

the second storage module is electrically connected with the correlation data acquisition module and is used for storing the correlation data;

and the decompression module is electrically connected with the first storage module and the second storage module and used for reading the correlation data, decompressing and outputting the compressed first image data and the compressed second image data according to the correlation data, wherein the decompressed first image data and the decompressed second image data are used for displaying one frame of image.

A third aspect of the present application provides a display device, including a display panel and a display control circuit, which are electrically connected, where the display control circuit is as described above, the display control circuit is configured to output the decompressed first image data and the decompressed second image data, and the display panel is configured to display one frame of image according to the decompressed first image data and the decompressed second image data.

According to the display control method, the display control circuit and the display device, the first image data and the second image data are compressed, when the second image data is received, the correlation data between the first image data and the second image data is obtained and stored, so that the first image data and the second image data can be successfully decompressed, and partial updating of the displayed image is achieved.

Drawings

Fig. 1 is a schematic block diagram of a display device according to an embodiment of the present disclosure.

Fig. 2 is a schematic block diagram of the display control circuit shown in fig. 1.

Fig. 3 is a flowchart of a display control method according to an embodiment of the present application.

Fig. 4 is a schematic plan view of the display panel of fig. 1 in a first period.

Fig. 5 is a schematic plan view of the display panel of fig. 1 in a second period.

Fig. 6 is another flowchart of a display control method according to an embodiment of the present application.

Fig. 7 is a schematic plan view of a display panel according to an alternative embodiment.

Fig. 8 is a schematic plan view of a display panel in another modified embodiment.

Description of the main elements

Display device 100

Display control circuit 10

Compression module 11

First memory module 12

Correlation data acquisition module 13

Second memory module 14

Decompression module 15

Position information acquisition module 16

Compression control module 17

Display panel 20

Display area 21

First sub-display region 211

Second sub-display area 212

Image 30

The related regions A1, A2, B1, B2, B3, B4, C1, C2, B3526, B2, B3578, B2, B2, B3538, B2, B,

C3、C4

Steps S1, S2, S3, S4, S5, S6, S7, S8

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

In various embodiments of the present invention, for convenience in description and not in limitation, the term "coupled" as used in the specification and claims of the present application is not limited to physical or mechanical couplings, either direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Referring to fig. 1, a display device 100 of the present embodiment is used for displaying an image. The display device 100 may be a smart phone, a computer, a television, or other devices capable of displaying images.

The display device 100 includes a display control circuit 10 and a display panel 20 electrically connected to each other. The display panel 20 is used to display an image according to a signal output from the display control circuit 10. The display control circuit 10 may include at least one chip, and may also include a circuit function unit on a main board of the display device 100. The display panel 20 may be a liquid crystal display panel, an organic light emitting display panel, or a micro light emitting diode display panel.

Referring to fig. 2, the display control circuit 10 includes a compression module 11, a first storage module 12, a related data obtaining module 13, a second storage module 14, and a decompression module 15.

The compression module 11 is configured to receive and compress the first image data and the second image data. The first storage module 12 is electrically connected to the compression module 11, and is configured to store the compressed first image data and the compressed second image data. The correlation data obtaining module 13 is configured to receive the second image data and obtain correlation data between the first image data and the second image data. The second storage module 14 is electrically connected to the correlation data obtaining module 13 for storing the correlation data. The decompression module 15 is electrically connected to the first storage module 12 and the second storage module 14, and configured to read the correlation data in the second storage module 14, decompress the compressed first image data and the compressed second image data according to the correlation data, and output the decompressed first image data and the compressed second image data. The decompressed first image data and the decompressed second image data are used to display one frame of image.

In this embodiment, the display control circuit 10 further includes a position information obtaining module 16 and a compression control module 17. The position information acquiring module 16 is configured to acquire position information of the second image data. The compression control module 17 is electrically connected to the position information obtaining module 16 and the correlation data obtaining module 13, respectively, and is configured to determine whether to compress the second image data according to the position information of the second image data. If the compression control module 17 determines yes, it is configured to control the correlation data obtaining module 13 to obtain correlation data between the first image data and the second image data, and control the compression module 11 to compress the second image data. If the compression control module 17 determines that the first image data is not compressed, the compression control module 17 controls the correlation data obtaining module 13 to obtain the correlation data, controls the compression module 11 to compress the second image data, and controls the display panel 20 to display the image according to the decompressed first image data.

The compression module 11, the first storage module 12, the correlation data obtaining module 13, the second storage module 14, the decompression module 15, the location information obtaining module 16, and the compression control module 17 may be a chip, a functional unit in a chip, or a circuit functional unit on a motherboard in the display device 100.

The present application also provides a display control method applied to the display device 100. In this embodiment, the display control method is applied to the display control circuit 10 in the display device 100.

Referring to fig. 3, the display control method of the present embodiment includes:

step S1, receiving first image data, compressing the first image data and storing;

step S2, receiving second image data;

step S3, acquiring and storing correlation data between the first image data and the second image data;

step S4, compressing the second image data according to the correlation data;

step S5, decompressing the first image data and the second image data according to the correlation data to display one frame of image.

Referring to fig. 2 and fig. 3, the display device 100 executes step S1 in the first period. In step S1, the compression module 11 receives the first image data and compresses the first image data. The first storage module 12 is configured to receive and store the compressed first image data. The compressed first image data is decompressed by the decompression module 15 and then is provided to the display panel 20 for displaying a frame of image.

In the display device 100, the first storage module 12 for storing image data is a Random Access Memory (RAM). The cost of the first memory module 12 increases as the memory space increases. Therefore, by reducing the storage space of the first storage module 12, it is advantageous to reduce the cost of the first storage module 12. In order to reduce the storage space of the first storage module 12, the first image data is compressed by the compression module 11 and then stored by the first storage module 12. Therefore, in this embodiment, the compression module 11, the first storage module 12, and the decompression module 15 are used to compress, store, and decompress the first image data, which is beneficial to reducing the storage space of the first storage module 12, thereby reducing the cost of the first storage module 12.

In this embodiment, the first image data is compressed by using a predictive coding compression method, which is beneficial to improving the compression rate.

In the first period, the display panel 20 is configured to display one frame of image according to the decompressed first image data.

The display apparatus 100 performs step S2 for the second period. In step S2, the display control circuit 10 receives the second image data. The second image data is not a complete frame of image data, and the display panel 20 is configured to partially update a frame of image displayed in the first period according to the second image data.

Referring to fig. 4, the display panel 20 has a display area 21. The display area 21 is used for emitting light to show an image. In a first period, the display area 21 displays a complete frame of the image 30. In the present embodiment, the image that needs to be displayed in the second period of time in the display area 21 is only partially different from the image 30 displayed in the first period of time, and therefore only the image 30 displayed in the first period of time needs to be partially updated.

Referring to fig. 5, the display area 21 includes a first sub-display area 211 and two second sub-display areas 212 that are mutually connected. In this embodiment, the display area 21, the first sub-display area 211 and the second sub-display area 212 are all rectangular. The first sub display region 211 is located between two second sub display regions 212. Two long sides of the first sub-display region 211 are connected to two long sides of the second sub-display regions 212, respectively, to constitute the display region 21.

In the second period, the image displayed by the display panel 20 is composed of the image displayed by the first sub-display region 211 and the images displayed by the two second sub-display regions 212. The two second sub display areas 212 display the same image for the first and second periods, and the first sub display area 211 displays different images for the first and second periods. Therefore, in this embodiment, the image data corresponding to the first sub-display region 211 may be updated in the second period. That is, in this embodiment, the second image data is the image data corresponding to the first sub-display region 211, and the first sub-display region 211 is used for displaying the image according to the second image data in the second period. The two second sub display areas 212 display the same image in the second period as the first period.

In this embodiment, the first image data is compressed by using a predictive coding compression method, and the compressed first image data corresponding to the adjacent pixels in the display area 21 have a certain correlation therebetween. The decompression module 15 can correctly decompress the first image data using the correlation.

In the second period, since only a partial image needs to be updated, only partial update of the compressed first image data stored in the first storage block 12 is required. The image data stored in the updated first storage module 12 is defined as target image data, and the target image data includes the compressed second image data and the compressed part of the first image data. That is, in the second period, the compressed part of the first image data is replaced with the compressed second image data.

And the correlation between the second image data received during the second period and the first image data received during the first period is unknown, in which case the decompression module 15 cannot simultaneously decompress the compressed part of the first image data and the compressed second image data during the second period to display an image.

Therefore, in the present embodiment, the correlation data between the first image data and the second image data is acquired at step S3, the second image data is compressed according to the correlation data at step S4, and the compressed partial first image data and the compressed second image data are decompressed according to the correlation data between the first image data and the second image data at step S5, so that the display panel can correctly display one frame of image in the second period.

In this embodiment, the display control method further filters the second image data, and does not compress all the received second image data. In this embodiment, referring to fig. 6, after step S2, the display control method further includes:

step S6, acquiring position information and size information of the second image data;

step S7, determining whether to compress the second image data according to the position information and the size information of the second image data.

In step S6, the position information acquisition module 16 is configured to calculate position information and size information of the second image data. The position information of the second image data includes the position of the first sub-display region 211 corresponding to the second image data in the entire display region 21, and the size information of the second image data includes the area of the first sub-display region 211 corresponding to the second image data in the entire display region 21.

Referring to fig. 5, when the compression control module 17 determines that the area and the length and the width of the first sub-display area 211 corresponding to the second image data are both smaller than those of the display area 21, the compression control module 17 determines that the second image data can be successfully displayed as an image. Otherwise the compression control module 17 decides no.

When the compression control module 17 determines yes in step S7, it executes step S3, step S4, and step S5. That is, the compression control module 17 controls the correlation data obtaining module 13 to obtain the correlation data between the first image data and the second image data, controls the second storage module 14 to store the correlation data, controls the compression module 11 to compress the second image data according to the correlation data, and controls the decompression module 15 to decompress the target image data (including the compressed part of the first image data and the compressed second image data) according to the correlation data.

In this embodiment, step S3 specifically includes:

step S31, if the determination in step S7 is yes, determining an associated region of the first image data and the second image data; and

step S32, obtaining and storing correlation data between the first image data and the second image data according to the correlation area.

The position information acquisition module 16 is electrically connected to the compression module 11. After the position information acquiring module 16 calculates the position information and the size information of the second image data, the compression module 11 determines and determines the area associated with the first image data and the second image data according to the position information and the size information in step S31. The correlation data acquisition module 13 is electrically connected to the compression module 11, and is configured to acquire correlation data between the first image data and the second image data according to the associated area at step S32.

In this embodiment, the associated area of the first image data and the second image data is the associated area of the first sub-display area 211 and the second sub-display area 212. In the present embodiment, the first sub display area 211 and the second sub display area 212 have associated areas a1 and a 2. The display area 21 includes a plurality of pixels arranged in a plurality of rows and columns. The associated areas a1 and a2 are two rows within the display area 21 that are closest to the intersection of the first sub-display area 211 and the second sub-display area 212.

In an alternative embodiment, the first sub-display region 211 and the second sub-display region 212 are located as shown in fig. 7. In this modified embodiment, the display area 21 includes a first sub-display area 211 and a second sub-display area 212 which are spliced with each other. The display area 21, the first sub-display area 211 and the second sub-display area 212 are all rectangular, and the second sub-display area 212 surrounds the first sub-display area 211. In this modified embodiment, the first sub-display region 211 and the second sub-display region 212 have associated regions B1, B2, B3, and B4 therebetween.

In another modified embodiment, the positional relationship between the first sub-display region 211 and the second sub-display region 212 is as shown in fig. 8. In this further modified embodiment, the display area 21 includes two first sub-display areas 211 and a second sub-display area 212 which are spliced with each other. The display area 21, the first sub-display area 211 and the second sub-display area 212 are all rectangular. The long sides or short sides of the two first sub-display regions 211 are connected, and the second sub-display region 212 surrounds the two first sub-display regions 211. In this another modified embodiment, the first sub-display region 211 and the second sub-display region 212 have associated regions C1, C2, C3 and C4 therebetween.

In this embodiment, step S5 specifically includes:

updating the compressed first image data according to the compressed second image data to generate target image data, wherein the target image data comprises the compressed second image data and a compressed part of the first image data;

decoding the target image data based on the correlation data to display the one frame image.

Referring to fig. 5, as mentioned above, the image displayed by the display panel 20 in the second period is different from the image displayed in the first period in the image displayed in the first sub-display area 211, so that the compressed second image data replaces the portion of the compressed first image data corresponding to the first sub-display area 211 in the second period. The "partially compressed first image data" is the compressed first image data corresponding to the two second sub-display areas 212.

The decompression module 15 is configured to decode the target image data corresponding to each pixel in the display area 21 in the order from top to bottom and from left to right (based on fig. 5). When decoding to the associated regions a1 and a2, the correlation data between the first image data and the second image data stored in the second storage module 14 can be read, and the target image data corresponding to the associated regions a1 and a2 can be correctly decoded.

When the determination in step S7 is no, step S8 is executed. That is, the decompression module 15 still decompresses the compressed first image data stored in the first period during the second period, and the display panel 20 still displays one frame of image based on the decompressed first image data during the second period. That is, the display panel 20 displays the same image in the first period and the second period.

The display control method of the present embodiment compresses the first image data and the second image data in accordance with the coding prediction compression method. When receiving second image data for updating a part of image, acquiring and storing correlation data between the first image data and the second image data, so that target image data (including the compressed part of the first image data and the compressed second image data) can be successfully decompressed, and partial updating of the displayed image is realized.

The above display control method is applied to the display control circuit 10 and the display device 100, and the display control circuit 10 and the display device 100 can achieve all the advantageous effects as described above.

It will be appreciated by those skilled in the art that the above embodiments are illustrative only and not intended to be limiting, and that suitable modifications and variations may be made to the above embodiments without departing from the true spirit and scope of the invention.