CN108597435B - Method for controlling display of display panel, device thereof and display device - Google Patents
Method for controlling display of display panel, device thereof and display device Download PDFInfo
- Publication number
- CN108597435B CN108597435B CN201810402876.7A CN201810402876A CN108597435B CN 108597435 B CN108597435 B CN 108597435B CN 201810402876 A CN201810402876 A CN 201810402876A CN 108597435 B CN108597435 B CN 108597435B
- Authority
- CN
- China
- Prior art keywords
- pixel
- data
- backlight
- display
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Embodiments of the present invention provide a method for controlling display of a display panel. In the method, a low-definition image of an image having a first resolution is acquired, and a high-definition image of a first region of the image having a second resolution is acquired, wherein the second resolution is higher than the first resolution. Backlight data for display is determined from the low-definition image. Display pixel data for display is generated from the low-definition image, the high-definition image, and the backlight data. Backlight data and display pixel data are provided to the display panel. According to the embodiment of the invention, the transmission amount of the image data can be reduced, and the display effect can be improved.
Description
Technical Field
The present invention relates to the field of image display technologies, and in particular, to a method and an apparatus for controlling display of a display panel, and a display apparatus.
Background
With the development of display technology, the resolution and refresh rate of images displayed by display panels are higher and higher. When the entire area of the image has a high resolution, a large amount of image data needs to be transmitted. In the existing data interface, the transmission of image data is greatly limited due to the insufficient bandwidth of the data interface. This causes tearing of the image when displayed, which affects the display effect.
Disclosure of Invention
Embodiments of the present invention provide a method for controlling display of a display panel, a display device, and an apparatus for controlling display of a display panel, which can reduce the transmission amount of image data and improve the display effect.
According to a first aspect of the present invention, a method for controlling a display of a display panel is provided. In the method, a low-definition image of an image having a first resolution is acquired, and a high-definition image of a first region of the image having a second resolution is acquired, wherein the second resolution is higher than the first resolution. Backlight data for display is determined from the low-definition image. Display pixel data for display is generated from the low-definition image, the high-definition image, and the backlight data. Then, the backlight data and the display pixel data are supplied to the display panel.
In an embodiment of the invention, determining backlight data for display comprises: dividing the low-definition image into a plurality of corresponding low-definition areas according to a plurality of backlight partitions of the display panel; and determining backlight data of the corresponding backlight partition according to the pixel data of the plurality of low-definition areas.
In an embodiment of the present invention, generating display pixel data for display from a low-definition image, a high-definition image, and backlight data comprises: synthesizing the low-definition image and the high-definition image into a display image; dividing a display image into a corresponding plurality of pixel regions according to a plurality of backlight partitions of the display panel; for each of a plurality of pixel regions: if the pixel area belongs to the high-definition image, generating display pixel data of the pixel area according to the backlight data of the backlight partition corresponding to the pixel area and the pixel data corresponding to the pixel area in the high-definition image; and if the pixel area does not belong to the high-definition image, generating display pixel data of the pixel area according to the backlight data of the backlight subarea corresponding to the pixel area and the pixel data corresponding to the pixel area in the low-definition image.
In an embodiment of the present invention, generating display pixel data of a pixel region includes: if the pixel area belongs to a high-definition image, then: using a point spread function based on backlight data of a backlight partition corresponding to a pixel regionGenerating pixel backlight data for each pixel in the pixel region; and calculating display pixel data as X for each pixel in the pixel regioni’＝A×Xi+B×XBL_iWherein i represents a pixel i, X in the pixel regioniPixel data, X, representing said pixel i in said high definition imageBL_iPixel backlight data representing the pixel i, a and B representing constants; if the pixel area does not belong to the high-definition image: generating pixel backlight data for each pixel in the pixel region using a point spread function based on backlight data of a backlight partition corresponding to the pixel region; and calculating display pixel data as Y for each pixel in the pixel regioni’＝A×Yi+B×YBL_iWherein i represents a pixel i, Y in the pixel regioniPixel data, Y, representing the pixel i in the low-definition imageBL_iPixel backlight data representing the pixel i, a and B represent constants.
In an embodiment of the invention, the pixel data comprises a grey value or a luminance value of the pixel.
In an embodiment of the invention, the first region is a central region of the image or a region corresponding to a region of gaze of the viewer.
In an embodiment of the invention, the first resolution is greater than or equal to one quarter of the original resolution of the image.
According to a second aspect of the present invention, there is provided an apparatus for controlling display of a display panel. The device includes: one or more processors; a memory coupled to the processor and storing computer program instructions, wherein the computer program instructions, when executed by the processor, cause the apparatus to: acquiring a low-definition image of the image with a first resolution; acquiring a high-definition image with a second resolution of a first region of the image, wherein the second resolution is higher than the first resolution; determining backlight data for display according to the low-definition image; generating display pixel data for display according to the low-definition image, the high-definition image and the backlight data; and providing the backlight data and the display pixel data to the display panel.
In an embodiment of the invention, the computer program instructions, when executed by the processor, cause the apparatus to determine the backlight data for display by: dividing the low-definition image into a plurality of corresponding low-definition areas according to a plurality of backlight partitions of the display panel; and determining backlight data of the corresponding backlight partition according to the pixel data of the plurality of low-definition areas.
In an embodiment of the invention, the computer program instructions, when executed by the processor, cause the apparatus to generate display pixel data for display from the low definition image, the high definition image and the backlight data by: synthesizing the low-definition image and the high-definition image into a display image; dividing a display image into a corresponding plurality of pixel regions according to a plurality of backlight partitions of the display panel; for each of a plurality of pixel regions: if the pixel area belongs to the high-definition image, generating display pixel data of the pixel area according to the backlight data of the backlight subarea corresponding to the pixel area and the pixel data corresponding to the pixel area in the high-definition image; and if the pixel area does not belong to the high-definition image, generating display pixel data of the pixel area according to the backlight data of the backlight subarea corresponding to the pixel area and the pixel data corresponding to the pixel area in the low-definition image.
In an embodiment of the invention, the computer program instructions, when executed by the processor, cause the apparatus to generate display pixel data for the pixel region by: if the pixel area belongs to the high-definition image, the method comprises the following steps: generating pixel backlight data of each pixel in the pixel region using a point spread function based on backlight data of a backlight partition corresponding to the pixel region; and calculating display pixel data as X for each pixel in the pixel regioni’＝A×Xi+B×XBL_iWherein i represents a pixel i in the pixel region; xiRepresenting pixel data corresponding to the pixel i in the high-definition image; xBL_iPixel backlight data representing the pixel i; a and B represent constants; if the pixel area does not belong to the high-definition image, then: based on backlight partition corresponding to said pixel areaBacklight data for generating pixel backlight data for each pixel in the pixel region using a point spread function; and for each pixel in the pixel region, calculating display pixel data as Y for each pixel in the pixel regioni’＝A×Yi+B×YBL_iWherein i represents a pixel i, Y in the pixel regioniPixel data, Y, representing the pixel i in the low-definition imageBL_iPixel backlight data representing the pixel i, a and B represent constants.
In an embodiment of the invention, the pixel data comprises a grey value or a luminance value of the pixel.
In an embodiment of the invention, the first region is a central region of the image or a region corresponding to a region of gaze of the viewer.
In an embodiment of the invention, the first resolution is greater than or equal to one quarter of the original resolution of the image.
According to a third aspect of the present invention, there is provided a display device. The display device includes: a display panel; and in a second aspect of the invention, an apparatus coupled to a display panel.
According to the embodiment of the invention, a part of the displayed image has higher resolution and the area outside the part of the displayed image has lower resolution by processing the image. This can reduce the transmission amount of image data and improve the contrast of the displayed image, thereby improving the display effect.
Further aspects and ranges of adaptability will become apparent from the description provided herein. It should be understood that various aspects of the present application may be implemented alone or in combination with one or more other aspects. It should also be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
Drawings
The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present application, wherein:
FIG. 1 is a schematic flow chart diagram of a method for controlling a display of a display panel in accordance with an embodiment of the present invention;
fig. 2 is a schematic diagram for explaining a process of acquiring a low-definition image and a high-definition image;
FIG. 3 is a schematic flow chart diagram illustrating the process of determining backlight data for display in the embodiment shown in FIG. 1;
FIG. 4a is a schematic illustration of backlight diffusion in an ideal case;
FIG. 4b is a schematic diagram of backlight diffusion in an actual situation;
FIG. 5 is a schematic flow chart diagram illustrating the process of generating display pixel data for display in the embodiment shown in FIG. 1;
fig. 6 schematically shows a process in which a low-definition image and a high-definition image are synthesized into a display image;
FIG. 7 is a schematic block diagram of an apparatus for controlling display of a display panel according to an embodiment of the present invention;
fig. 8 is a schematic block diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings of the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in conjunction with the embodiments. It should be noted that the features in the embodiments of the present invention may be combined with each other without conflict.
In the description of the present application, "resolution of an image" refers to the number of pixels contained per inch and is denoted by PPI.
In order to obtain a high-definition display effect, generally, the entire area of an image has a high resolution, and therefore, a large amount of image data needs to be transmitted. However, in the conventional data interface, the transmission of image data is limited due to the insufficient bandwidth of the data interface. In addition, in the foveal region of the human eye, a high density of cones is distributed, which cones have the best visual resolution. And the cone cell density gradually decreases and the visual resolution and perception capability correspondingly decreases when the cone cell deviates from the center of the human eye to a certain angle. Therefore, the viewer is more sensitive to the resolution of the image within the central region of the human eye and is less sensitive to the resolution of the image outside the central region of the human eye when viewing the image.
The lcd panel generally includes a display panel and a backlight module for providing light to the display panel. When the local part of the displayed image has a lower gray value, if the backlight module still presents a full-bright state, the light leakage phenomenon occurs at the local part of the display panel which needs to present the lower gray value. Therefore, the backlight brightness value of the backlight module needs to be adjusted locally according to the gray-scale value of the image. The display panel can be divided into a plurality of backlight partitions, and the backlight module can adjust the backlight brightness value of each backlight partition. This can prevent the light leakage phenomenon and also improve the contrast of the displayed image.
Fig. 1 is a schematic flow chart of a method for controlling display of a display panel according to an embodiment of the present invention. As shown in fig. 1, in step 102, a low-definition image of the image is acquired. The resolution of the low-definition image is also referred to as "first resolution", and generally, the first resolution is lower than the original resolution of the image. In embodiments of the present invention, several pixels of an image may be compressed into one pixel to generate a low-definition image. Those skilled in the art will appreciate that other methods of acquiring low-definition images may be used. In one example embodiment, the first resolution may be greater than or equal to one-fourth of the original resolution and less than the original resolution.
In step 104, a high definition image of a first region of an image is acquired. The resolution of the high-definition image is also referred to as "second resolution", wherein the second resolution is higher than the first resolution. In an embodiment of the invention, each pixel in the first area may be rendered into a plurality of pixels to generate a high definition image of the first area. Those skilled in the art will appreciate that other methods of acquiring high definition images may be used. In an embodiment of the present invention, the first region may be set as a central region of the image. In this case, each pixel in the central region of the image is rendered into a plurality of pixels to generate a high definition image of the central region. Alternatively, the first region may be determined based on the gaze region of the viewer. The region of gaze may be within 30 ° of the eyeball location as a center. In an embodiment of the present invention, the eyeball position of the viewer may be detected, and a region of 30 ° centered on the eyeball position is determined as the gazing region. Then, from the gazing area, a corresponding area of the image may be determined as the first area.
Fig. 2 is a schematic diagram for explaining a process of acquiring a low-definition image and a high-definition image. In this example, the first region 202 is set as the central region of the image 20. As shown in fig. 2, assume that the resolution of the image 20 is 2PPI and the image 20 includes 18 × 18 pixels. By compressing the image 20, a corresponding low-definition image 21 is obtained. In the present example, it is assumed that the resolution of the low-definition image 21 is 1PPI, including 9 × 9 pixels. As shown in fig. 2, one pixel of the low-definition image 21 may correspond to four pixels of the image 20. In addition, by rendering the first area 202 of the image 20, a high-definition image 22 of the first area 202 is obtained. In the present example, it is assumed that the resolution of the high definition image 22 is 4PPI, comprising 12 × 12 pixels. As shown in fig. 2, four pixels of high definition image 22 correspond to one pixel in first region 202 of image 20.
In the example of fig. 2, the resolution of each image is merely an example. The process shown in fig. 2 is applicable to images of various resolutions.
In step 106, backlight data for display is determined from the acquired low-definition image. The determined backlight data may be provided to a backlight module of the display panel, and a backlight brightness value is adjusted by the backlight module based on the backlight data.
Fig. 3 is a schematic flow chart illustrating a process of determining backlight data for display in the embodiment shown in fig. 1. As shown in fig. 3, in step 1062, the low-definition image is divided into a corresponding plurality of low-definition regions according to a plurality of backlight partitions of the display panel. In an embodiment of the present invention, if the display panel has N × M backlight partitions, the low-definition image is also divided into N × M low-definition regions. In the example shown in fig. 2, assuming that the display panel has 3 × 3 backlight partitions, the low-definition image 21 is divided into 3 × 3 low-definition regions (as shown in fig. 2), where each low-definition region includes 9 pixels.
Then, in step 1064, backlight data of the corresponding backlight partition is determined according to the pixel data of each low-definition region. In an embodiment of the present invention, the pixel data may be a luminance value of the pixel or a gray scale value convertible to a luminance value, and the backlight data may be a backlight luminance value. In one example embodiment, for each backlight partition, the sum of the grayscale values of all pixels in the corresponding low-definition region is calculated, and the average grayscale value is calculated. Then, based on the average gray value, the backlight brightness value of the backlight partition may be determined. In the example of fig. 2, for the backlight partition corresponding to the low-definition region a, the sum of the gradation values of 9 pixels in the low-definition region a is calculated, and the average gradation value is calculated. Then, according to the average gray value, the backlight brightness value of the backlight partition can be determined to be C. Similarly, for the backlight partition corresponding to the low-definition region b, the sum of the gray-scale values of the 9 pixels in the low-definition region b can be calculated, and the average gray-scale value is calculated, thereby determining the backlight brightness value of the backlight partition as D. In the same way, the backlight brightness values of the other 7 backlight areas can be determined.
In an ideal case, when one of the plurality of backlight partitions is lit up according to its backlight data, a light spot having the same shape as that of the backlight partition, for example, a rectangular light spot, should be displayed on the display panel, as shown in fig. 4 a. However, due to the influence of backlight diffusion, not a rectangular spot but a circular or elliptical spot is actually displayed on the display panel, as shown in fig. 4 b. Therefore, in order to display a desired spot shape on the display panel, it is necessary to compensate for the influence of the backlight diffusion.
In step 108, display pixel data for display is generated from the low-definition image, the high-definition image, and the backlight data. The generated display pixel data can compensate for the effects of backlight diffusion. FIG. 5 is a schematic flow chart diagram illustrating the process of generating display pixel data for display in the embodiment shown in FIG. 1.
As shown in fig. 5, in step 1080, the low-definition image and the high-definition image are synthesized into a display image. Fig. 6 schematically shows a process in which the low-definition image 21 and the high-definition image 22 are synthesized into the display image 23. As shown in fig. 6, the low-definition image 21 and the high-definition image 22 are stitched to obtain a display image 23. It should be noted that the resolution of the display panel should be greater than the resolution of the high-definition image 22 so as to be able to display the high-definition image 22.
In step 1082, the display image 23 is divided into a corresponding plurality of pixel regions according to a plurality of backlight partitions of the display panel. In an embodiment of the present invention, if the display panel has N × M backlight partitions, the display image is also divided into N × M pixel regions. In the example shown in fig. 6, the display panel has 3 × 3 backlight partitions, and the display image 23 is divided into 3 × 3 pixel regions.
In step S1084, it is determined, for each of the plurality of pixel areas, whether or not the pixel area belongs to the high-definition image 22. In the example shown in fig. 6, the pixel region a belongs to the high-definition image 22 and includes 144 pixels, while the pixel region b does not belong to the high-definition image 22 and includes 9 pixels.
For a pixel area belonging to the high definition image, for example, pixel area a, in step 1086, display pixel data of pixel area a is generated from backlight data of the backlight partition corresponding to pixel area a and pixel data corresponding to pixel area a in high definition image 22.
In the embodiment of the present invention, first, based on backlight data, for example, backlight luminance values, of the backlight partition corresponding to the pixel region a, for each pixel i in the pixel region a, corresponding pixel backlight data X is generated using a point spread functionBL_i. Then, display pixel data X of each pixel i is calculatedi’＝A×Xi+B×XBL_iWherein, in the step (A),Xirepresenting pixel data, X, corresponding to pixel i in a high definition imageBL_iPixel backlight data representing a pixel i, a and B represent constants.
For a pixel area not belonging to the high definition image, for example, the pixel area b, in step 1088, display pixel data of the pixel area b is generated based on the backlight data of the backlight partition corresponding to the pixel area b and the pixel data corresponding to the pixel area b in the low definition image 21.
In the embodiment of the present invention, first, based on backlight data, for example, backlight luminance values, of the backlight partition corresponding to the pixel region b, for each pixel i in the pixel region b, corresponding pixel backlight data Y is generated using a point spread functionBL_i. Then, display pixel data Y of each pixel i is calculatedi’＝A×Yi+B×YBL_iWherein Y isiIndicating pixel data, Y, corresponding to pixel i in the low-definition imageBL_iPixel backlight data representing a pixel i, a and B represent constants.
In step 110, backlight data and display pixel data are provided to the display panel for displaying an image on the display panel. In an embodiment of the invention, the backlight module of the display panel can adjust the brightness according to the backlight data, and the liquid crystal control module of the display panel can control the voltage applied to the liquid crystal molecules according to the display pixel data, so that the display panel can display images.
As can be seen from the above description, with the method according to the embodiment of the present invention, a portion of the area of the image displayed on the display panel has a higher resolution, and the area outside the portion has a lower resolution. The high-definition image of the first area can be in the visual field range of the fovea region of the human eye, and the low-definition image outside the first area can be in the peripheral visual field range. When the first resolution of the low-definition image is greater than or equal to one-fourth of the original resolution, it is difficult for the human eye to distinguish the edges of the high-definition image and the low-definition image. Therefore, this method can improve the display effect and reduce the transmission amount of image data.
The flow chart shown in fig. 1 is for example only, wherein step 102 may be performed in parallel with step 104, or step 104 may be performed first and then step 102. Those skilled in the art will appreciate that various modifications may be made to the flow chart shown or the steps described therein.
Fig. 7 is a schematic step diagram of an apparatus 70 for controlling display of a display panel according to an embodiment of the present invention. As shown in fig. 7, the apparatus 70 includes one or more processors 702 and memory 704. The memory 704 is coupled to the processor 702 via a bus and the I/O interface 706 and stores computer program instructions. When the computer program instructions are executed by the processor 702, the apparatus 70 may perform the steps of the method of controlling the display of a display panel as shown in fig. 1, 3 and 5.
In an embodiment of the present invention, the apparatus 70 may acquire a low-definition image of the image having a first resolution. Typically, the first resolution is lower than the original resolution of the image. In embodiments of the present invention, the first resolution may be greater than or equal to one-fourth of the original resolution. The apparatus 70 may also acquire a high-definition image of the first region of the image having a second resolution, the second resolution being higher than the first resolution. In an embodiment of the invention, the first region of the image acquired by the device 70 is a central region of the image or a region corresponding to the region of the viewer's gaze.
Further, the device 70 may determine backlight data for display based on the low-definition image. In an embodiment of the present invention, the apparatus 70 may divide the low-definition image into a corresponding plurality of low-definition regions according to a plurality of backlight partitions of the display panel. The apparatus 70 may then determine backlight data for the corresponding backlight partition based on the pixel data for the plurality of low-definition regions.
The device 70 may then generate display pixel data for display based on the low-definition image, the high-definition image, and the backlight data. In an embodiment of the present invention, the device 70 may combine the low definition image and the high definition image into a display image. The device 70 may then divide the display image into a corresponding plurality of pixel regions in accordance with the plurality of backlight partitions of the display panel. For each of the plurality of pixel regions, if the pixel region belongs to a high definition image, the apparatus 70 may generate display pixel data of the pixel region according to backlight data of a backlight partition corresponding to the pixel region and pixel data corresponding to the pixel region in the high definition image. If the pixel region does not belong to a high definition image, the apparatus 70 may generate display pixel data for the pixel region based on the backlight data for the backlight partition corresponding to the pixel region and the pixel data corresponding to the pixel region in the low definition image.
Further, in an embodiment of the present invention, if the pixel region belongs to a high definition image, the apparatus 70 may generate pixel backlight data of each pixel in the pixel region using a point spread function based on backlight data of a backlight partition corresponding to the pixel region. For each pixel in the pixel region, the device 70 can calculate the display pixel data as Xi’＝A×Xi+B×XBL_iWhere i denotes a pixel in the pixel region, XiPixel data, X, representing pixel i in a high definition imageBL_iPixel backlight data representing a pixel i, a and B represent constants. If the pixel region does not belong to a high definition image, device 70 may generate pixel backlight data for each pixel in the pixel region using a point spread function based on backlight data for backlight partitions corresponding to the pixel region. For each pixel in the pixel region, device 70 may calculate display pixel data as Yi’＝A×Yi+B×YBL_iWhere i denotes a pixel in the pixel region, YiPixel data, Y, representing pixel i in a low-definition imageBL_iPixel backlight data representing a pixel i, a and B represent constants.
The device 70 may then provide the backlight data and the display pixel data to the display panel in order to display a corresponding image on the display panel.
In embodiments of the present invention, the device 70 may be implemented as a separate device or may be integrated in a display panel.
Fig. 8 is a schematic step diagram of a display device 80 according to an embodiment of the present invention. As shown in fig. 8, the display device 80 may include a display panel 802, and the device 70 shown in fig. 7 coupled to the display panel 802.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A method for controlling display of a display panel, comprising:
acquiring a low-definition image of the image with a first resolution;
acquiring a high-definition image of a first region of the image having a second resolution, wherein the second resolution is higher than the first resolution;
determining backlight data for the display from the low-definition image;
generating display pixel data for the display according to the low-definition image, the high-definition image and the backlight data; and
providing the backlight data and the display pixel data to the display panel,
wherein determining backlight data for the display comprises:
dividing the low-definition image into a plurality of corresponding low-definition regions according to a plurality of backlight partitions of the display panel; and
determining backlight data of corresponding backlight partitions according to the pixel data of the low-definition areas,
wherein generating display pixel data for the display from the low-definition image, the high-definition image, and the backlight data comprises:
synthesizing the low-definition image and the high-definition image into a display image;
dividing the display image into a corresponding plurality of pixel regions according to a plurality of backlight partitions of the display panel;
for each of the plurality of pixel regions:
if the pixel area belongs to the high-definition image, generating display pixel data of the pixel area according to backlight data of a backlight subarea corresponding to the pixel area and pixel data corresponding to the pixel area in the high-definition image, wherein the method comprises the following steps:
generating pixel backlight data of each pixel in the pixel region using a point spread function based on backlight data of a backlight partition corresponding to the pixel region; and
calculating display pixel data as X for each pixel in the pixel regioni’＝A×Xi+B×XBL_iWherein i represents a pixel in the pixel region, XiPixel data, X, representing said pixel i in said high definition imageBL_iPixel backlight data representing the pixel i, a and B representing constants;
if the pixel area does not belong to the high-definition image, generating display pixel data of the pixel area according to backlight data of a backlight partition corresponding to the pixel area and pixel data corresponding to the pixel area in the low-definition image, wherein the generating comprises:
generating pixel backlight data of each pixel in the pixel region using a point spread function based on backlight data of a backlight partition corresponding to the pixel region; and
calculating display pixel data as Y for each pixel in the pixel regioni’＝A×Yi+B×YBL_iWherein i represents a pixel in the pixel region, YiPixel data, Y, representing the pixel i in the low-definition imageBL_iPixel backlight data representing the pixel i, a and B represent constants.
2. The method of claim 1, wherein the pixel data comprises a gray value or a luminance value of a pixel.
3. The method of claim 1, wherein the first region is a central region of the image or a region corresponding to a viewer's gaze region.
4. The method of claim 1, wherein the first resolution is greater than or equal to one quarter of an original resolution of the image.
5. An apparatus for controlling display of a display panel, comprising:
one or more processors;
a memory coupled to the processor and storing computer program instructions, wherein the computer program instructions, when executed by the processor, cause the apparatus to:
acquiring a low-definition image of the image with a first resolution;
acquiring a high-definition image of a first region of the image having a second resolution, wherein the second resolution is higher than the first resolution;
determining backlight data for the display from the low-definition image;
generating display pixel data for the display according to the low-definition image, the high-definition image and the backlight data; and
providing the backlight data and the display pixel data to the display panel,
wherein determining backlight data for the display comprises:
dividing the low-definition image into a plurality of corresponding low-definition regions according to a plurality of backlight partitions of the display panel; and
determining backlight data of corresponding backlight partitions according to the pixel data of the low-definition areas,
wherein generating display pixel data for the display from the low-definition image, the high-definition image, and the backlight data comprises:
synthesizing the low-definition image and the high-definition image into a display image;
dividing the display image into a corresponding plurality of pixel regions according to a plurality of backlight partitions of the display panel;
for each of the plurality of pixel regions:
if the pixel area belongs to the high-definition image, generating display pixel data of the pixel area according to backlight data of a backlight subarea corresponding to the pixel area and pixel data corresponding to the pixel area in the high-definition image, wherein the method comprises the following steps:
generating pixel backlight data of each pixel in the pixel region using a point spread function based on backlight data of a backlight partition corresponding to the pixel region; and
calculating display pixel data as X for each pixel in the pixel regioni’＝A×Xi+B×XBL_iWherein i represents a pixel i in the pixel region; xiRepresenting pixel data corresponding to the pixel i in the high-definition image; xBL_iPixel backlight data representing the pixel i; a and B represent constants;
if the pixel area does not belong to the high-definition image, generating display pixel data of the pixel area according to backlight data of a backlight partition corresponding to the pixel area and pixel data corresponding to the pixel area in the low-definition image, wherein the generating comprises:
generating pixel backlight data for each pixel in the pixel region using a point spread function based on backlight data of a backlight partition corresponding to the pixel region; and
calculating display pixel data as Y for each pixel in the pixel regioni’＝A×Yi+B×YBL_iWherein i represents a pixel i, Y in the pixel regioniPixel data, Y, representing the pixel i in the low-definition imageBL_iPixel backlight data representing the pixel i, a and B represent constants.
6. The apparatus of claim 5, wherein the pixel data comprises a gray value or a luminance value of a pixel.
7. The apparatus of claim 5, wherein the first region is a central region of the image or a region corresponding to a viewer's gaze region.
8. The apparatus of claim 5, wherein the first resolution is greater than or equal to one quarter of an original resolution of the image.
9. A display device, comprising:
a display panel; and
the device of any of claims 5-8, coupled with the display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402876.7A CN108597435B (en) | 2018-04-28 | 2018-04-28 | Method for controlling display of display panel, device thereof and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402876.7A CN108597435B (en) | 2018-04-28 | 2018-04-28 | Method for controlling display of display panel, device thereof and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108597435A CN108597435A (en) | 2018-09-28 |
| CN108597435B true CN108597435B (en) | 2021-10-29 |
Family
ID=63620104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810402876.7A Active CN108597435B (en) | 2018-04-28 | 2018-04-28 | Method for controlling display of display panel, device thereof and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108597435B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637406A (en) * | 2019-01-04 | 2019-04-16 | 京东方科技集团股份有限公司 | A kind of display methods of display device, display device and readable storage medium storing program for executing |
| CN111667796A (en) * | 2020-07-07 | 2020-09-15 | 京东方科技集团股份有限公司 | Driving device and method for direct type backlight module |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950546A (en) * | 2010-09-17 | 2011-01-19 | 张超 | Liquid crystal display device and display control method thereof |
| CN102947876A (en) * | 2010-06-21 | 2013-02-27 | 杜比实验室特许公司 | Displaying images on local-dimming displays |
| CN103106875A (en) * | 2011-11-11 | 2013-05-15 | 联咏科技股份有限公司 | Image display device, display control device and screen control chip |
| US8564528B1 (en) * | 2011-05-18 | 2013-10-22 | Pixelworks, Inc. | LCD image compensation for LED backlighting |
| CN104052978A (en) * | 2014-05-30 | 2014-09-17 | 京东方科技集团股份有限公司 | Signal processing method, signal processing system and display device |
| CN105047145A (en) * | 2015-09-14 | 2015-11-11 | 青岛海信电器股份有限公司 | Backlight brightness control method, backlight brightness control device and display terminal |
| CN105047141A (en) * | 2015-08-17 | 2015-11-11 | 青岛海信电器股份有限公司 | Split screen detection method and apparatus of multi-divided-zone dynamic backlight, and liquid crystal television set |
| CN106157899A (en) * | 2015-04-24 | 2016-11-23 | 联想(北京)有限公司 | A kind of control method, control method, electronic equipment and backlight chip |
| CN107767808A (en) * | 2017-11-13 | 2018-03-06 | 北京京东方光电科技有限公司 | A kind of driving method of display panel, display driver circuit and display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060227125A1 (en) * | 2005-03-29 | 2006-10-12 | Intel Corporation | Dynamic backlight control |
-
2018
- 2018-04-28 CN CN201810402876.7A patent/CN108597435B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102947876A (en) * | 2010-06-21 | 2013-02-27 | 杜比实验室特许公司 | Displaying images on local-dimming displays |
| CN101950546A (en) * | 2010-09-17 | 2011-01-19 | 张超 | Liquid crystal display device and display control method thereof |
| US8564528B1 (en) * | 2011-05-18 | 2013-10-22 | Pixelworks, Inc. | LCD image compensation for LED backlighting |
| CN103106875A (en) * | 2011-11-11 | 2013-05-15 | 联咏科技股份有限公司 | Image display device, display control device and screen control chip |
| CN104052978A (en) * | 2014-05-30 | 2014-09-17 | 京东方科技集团股份有限公司 | Signal processing method, signal processing system and display device |
| CN106157899A (en) * | 2015-04-24 | 2016-11-23 | 联想(北京)有限公司 | A kind of control method, control method, electronic equipment and backlight chip |
| CN105047141A (en) * | 2015-08-17 | 2015-11-11 | 青岛海信电器股份有限公司 | Split screen detection method and apparatus of multi-divided-zone dynamic backlight, and liquid crystal television set |
| CN105047145A (en) * | 2015-09-14 | 2015-11-11 | 青岛海信电器股份有限公司 | Backlight brightness control method, backlight brightness control device and display terminal |
| CN107767808A (en) * | 2017-11-13 | 2018-03-06 | 北京京东方光电科技有限公司 | A kind of driving method of display panel, display driver circuit and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108597435A (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109036245B (en) | Display processing method and device, integrated circuit and computer storage medium | |
| CN109979401B (en) | Driving method, driving apparatus, display device, and computer readable medium | |
| US9105243B2 (en) | Control device for liquid crystal display device, liquid crystal display device, method for controlling liquid crystal display device, program, and storage medium for program | |
| US7864194B2 (en) | Systems and methods for motion adaptive filtering | |
| US9336576B2 (en) | Method and system for improving the visibility of features of an image | |
| US6771243B2 (en) | Display device and method for driving the same | |
| KR102646685B1 (en) | Display apparatus and control method thereof | |
| US20040012551A1 (en) | Adaptive overdrive and backlight control for TFT LCD pixel accelerator | |
| US20110037785A1 (en) | Control device for liquid crystal display device, liquid crystal display device, method for controlling liquid crystal display devicde, program, and storage medium | |
| US11373337B2 (en) | Image processing method of virtual reality and apparatus thereof | |
| JP2002023707A (en) | Display device | |
| US20190035049A1 (en) | Dithered variable rate shading | |
| WO2019101005A1 (en) | Pixel compensation method and apparatus, and terminal device | |
| US12067921B2 (en) | Display device brightness compensation look-up table manufacturing method, device thereof, and display device | |
| CN107845370A (en) | A kind of display methods of display panel, display panel and display device | |
| JP2007271842A (en) | Display device | |
| CN108597435B (en) | Method for controlling display of display panel, device thereof and display device | |
| CN104570430A (en) | Display method and device applied to MVA (Multi-domain Vertical Alignment) wide-view-angle liquid crystal screen | |
| US20140078269A1 (en) | Display apparatus and control method thereof | |
| US8325121B2 (en) | Method for driving pixel | |
| US11955054B1 (en) | Foveated display burn-in statistics and burn-in compensation systems and methods | |
| US20230111826A1 (en) | Device and method for foveated rendering | |
| US20190139500A1 (en) | Display apparatus and control method thereof | |
| US20130050240A1 (en) | Display apparatus and control method thereof | |
| CN113611239A (en) | Picture updating method, display device and driving chip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |