CN114927104B - Method and device for displaying picture, storage medium and electronic equipment - Google Patents

Method and device for displaying picture, storage medium and electronic equipment Download PDF

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Publication number
CN114927104B
CN114927104B CN202210540464.6A CN202210540464A CN114927104B CN 114927104 B CN114927104 B CN 114927104B CN 202210540464 A CN202210540464 A CN 202210540464A CN 114927104 B CN114927104 B CN 114927104B
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gray scale
backlight
displayed
picture
scale number
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CN114927104A (en
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徐智强
刘伟星
张春芳
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The embodiment of the disclosure provides a method, a device, a storage medium and electronic equipment for displaying pictures, wherein the method comprises the following steps: determining the gray scale number of a picture to be displayed; determining target brightness values of backlight areas according to the gray scale number of a picture to be displayed and the gray scale number of an LCD panel, wherein one backlight area corresponds to one pixel area, and one pixel area comprises one or more pixels; and sending brightness control signals to each backlight area according to each target brightness value so as to control different backlight areas to present different luminous brightness. According to the embodiment of the disclosure, the backlight is divided into a plurality of backlight areas to be controlled, each backlight area corresponds to one pixel area, the increase of the gray scale number of the pixel areas is realized by adjusting the brightness value of the backlight area corresponding to the pixel area with the gray scale number increased, the whole process is simple to operate, the current state of a product is not required to be changed, the product performance is improved, and the display of a picture is finer.

Description

Method and device for displaying picture, storage medium and electronic equipment
Technical Field
The present disclosure relates to the field of control, and in particular, to a method and apparatus for displaying a picture, a storage medium, and an electronic device.
Background
The existing LCD display product generally adopts 256 gray scales (L0-L255) for display, so as to ensure the basic display requirement of pictures; along with the fact that the existing pictures need to be richer in display detail content, the fineness of the required screen display is higher and higher, however, the gray scale number of the existing LCD display products is fixed, the display requirements of finer display cannot be met, and the product performance is poor.
Disclosure of Invention
In view of this, an embodiment of the present disclosure provides a method, an apparatus, a storage medium, and an electronic device for displaying a picture, so as to solve the following problems in the prior art: along with the fact that the existing pictures need to be richer in display detail content, the fineness of the required screen display is higher and higher, however, the gray scale number of the existing LCD display products is fixed, the display requirements of finer display cannot be met, and the product performance is poor.
In one aspect, an embodiment of the present disclosure provides a method for displaying a picture, including: determining the gray scale number of a picture to be displayed; determining target brightness values of backlight areas according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel, wherein one backlight area corresponds to one pixel area, and one pixel area comprises one or more pixels; and sending a brightness control signal to each backlight area according to each target brightness value so as to control different backlight areas to present different luminous brightness.
In some embodiments, the determining the target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel includes: detecting whether the gray scale number of the picture to be displayed is larger than the gray scale number of the LCD panel; and under the condition that the gray scale number of the picture to be displayed is larger than that of the LCD panel, determining the target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel.
In some embodiments, the determining the target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel includes: determining each preset pixel area of the picture to be displayed, wherein the gray scale number of the picture to be displayed exceeds the gray scale number of the LCD panel; determining a preset backlight area corresponding to the preset pixel area; and calculating a target brightness value of the preset backlight area according to the gray scale number of the picture to be displayed corresponding to the preset backlight area and the gray scale number of the LCD panel.
In some embodiments, the sending a brightness control signal to each backlight area according to each target brightness value includes: and sending a first brightness control signal to each preset backlight area, and sending a second brightness control signal to other backlight areas except the preset backlight area, wherein the first brightness control signal is a reference brightness control signal adjusted according to the target brightness value and a backlight reference brightness value, and the second brightness control signal is a reference brightness control signal corresponding to the backlight reference brightness value.
In another aspect, an embodiment of the present disclosure provides an apparatus for displaying a picture, including: the first determining module is used for determining the gray scale number of the picture to be displayed; a second determining module, configured to determine a target brightness value of each backlight area according to the number of gray scales of the frame to be displayed and the number of gray scales of the LCD panel, where one backlight area corresponds to one pixel area, and one pixel area includes one or more pixels; and the sending module is used for sending a brightness control signal to each backlight area according to each target brightness value so as to control different backlight areas to present different luminous brightness.
In some embodiments, the second determining module comprises: the detection unit is used for detecting whether the gray scale number of the picture to be displayed is larger than that of the LCD panel; and the determining unit is used for determining the target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel under the condition that the gray scale number of the picture to be displayed is larger than the gray scale number of the LCD panel.
In some embodiments, the second determining module is specifically configured to: determining each preset pixel area of the picture to be displayed, wherein the gray scale number of the picture to be displayed exceeds the gray scale number of the LCD panel; determining a preset backlight area corresponding to the preset pixel area; and calculating a target brightness value of the preset backlight area according to the gray scale number of the picture to be displayed corresponding to the preset backlight area and the gray scale number of the LCD panel.
In some embodiments, the sending module is specifically configured to: and sending a first brightness control signal to each preset backlight area, and sending a second brightness control signal to other backlight areas except the preset backlight area, wherein the first brightness control signal is a reference brightness control signal adjusted according to the target brightness value and a backlight reference brightness value, and the second brightness control signal is a reference brightness control signal corresponding to the backlight reference brightness value.
In another aspect, an embodiment of the present disclosure proposes a storage medium storing a computer program that, when executed by a processor, implements a method provided by any embodiment of the present disclosure.
In another aspect, an embodiment of the present disclosure provides an electronic device, including at least a memory, and a processor, where the memory stores a computer program, and the processor implements a method provided by any embodiment of the present disclosure when executing the computer program on the memory.
According to the embodiment of the disclosure, the backlight is divided into a plurality of backlight areas to control, each backlight area corresponds to one pixel area, before the image is displayed, the gray scale number of the image to be displayed is determined, then the target brightness value of each backlight area is determined according to the gray scale number of the image to be displayed and the gray scale number of the LCD panel, and the brightness value of the backlight area corresponding to the pixel area with the gray scale number required to be increased is regulated, so that the increase of the gray scale number of the pixel area is realized, the whole process is simple to operate, the current situation of a product is not required to be changed, the product performance is improved, and the image is enabled to be displayed more finely.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a flowchart of a method for displaying a screen according to a first embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a display screen according to a first embodiment of the present disclosure;
FIG. 3 is a graph showing brightness of an LCD panel according to a first embodiment of the present disclosure when multiple gray levels in bright state are required;
FIG. 4 is a graph showing brightness when the LCD panel according to the first embodiment of the present disclosure requires dark multi-gray levels;
fig. 5 is a schematic structural diagram of a device for displaying a picture according to a second embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.
Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed description of known functions and known components.
The existing LCD display products are difficult to increase the gray scale number of the display products due to voltage limitation, and thus, more refined display requirements cannot be realized. However, as the existing picture needs to display more detail content, the fineness of the screen display is required to be higher and higher, the gray scale number of the existing LCD display product is fixed, the display requirement of finer display cannot be met, and the product performance is poor.
Based on the above-mentioned considerations, a first embodiment of the present disclosure provides a method for displaying a screen, the flow of which is shown in fig. 1, including steps S101 to S103:
s101, determining the gray scale number of a picture to be displayed.
The frame to be displayed is a frame to be displayed on the whole display screen, and because the frames have different display precision requirements, the gray scale number is determined according to the different display precision requirements of the frames. For example, the number of gray levels of a common picture is completely within 256 gray levels, so that the existing display screen can be realized, but if one picture needs 500 gray levels, the existing display screen cannot display according to the original precision of the picture, and a certain detail loss exists in the picture displayed on the display screen relative to the original picture data, so that the embodiment of the disclosure needs to determine what the number of gray levels of the whole picture to be displayed is.
The display screen of the embodiment of the disclosure is typically an LCD display screen, which further includes an LCD panel and a backlight, and in the case that the LCD panel cannot increase the gray scale, the embodiment of the disclosure considers that the gray scale number is increased by adjusting the backlight, so as to realize more gray scales.
S102, determining target brightness values of backlight areas according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel, wherein one backlight area corresponds to one pixel area, and one pixel area comprises one or more pixels.
For LCD panels, the gray levels are generally classified into bright and dark states, for example, L0-L127 is a dark gray level, and L128-L255 is a bright gray level, so that when determining the target brightness value of each backlight area according to the number of gray levels of the to-be-displayed picture and the number of gray levels of the LCD panel, it may be determined as a whole, that is, whether the number of gray levels of the to-be-displayed picture is greater than 256, or it may be detected according to the bright gray level and the dark gray level, that is, whether the number of dark gray levels of the to-be-displayed picture is greater than 128, or whether the number of bright gray levels of the to-be-displayed picture is greater than 128.
For the mode of separately detecting the dark gray scale, when the number of the dark gray scales of the picture to be displayed is larger than that of the dark gray scales of the LCD panel, it is determined that more dark gray scales need to be displayed, and then 128 gray scales (L0-L127) corresponding to the original LCD panel cannot meet the dark state display requirement of the display picture, so that the increase of the dark gray scales can be realized by adjusting the target brightness value of the backlight area, that is, the backlight is downwards adjusted (the adjustment can be adjusted according to a certain proportion) under the condition of the original reference brightness value, the adjusted brightness value is used as the target brightness value, and further more gray scales can be displayed through superposition of the brightness of the LCD panel and the backlight.
For the mode of individually detecting the bright gray scale, when the number of the bright gray scales of the picture to be displayed is larger than that of the bright gray scales of the LCD panel, it is determined that more bright gray scales need to be displayed, and then 128 gray scales (L128-L255) corresponding to the original LCD panel cannot meet the bright display requirement of the display picture, so that the bright gray scales can be increased by adjusting the target brightness value of the backlight area, that is, the backlight is adjusted upwards (the adjustment can be adjusted according to a certain proportion) under the condition of the original reference brightness value, the adjusted brightness value is used as the target brightness value, and more gray scales can be displayed through superposition of the LCD panel and the backlight brightness.
Because one backlight area corresponds to one pixel area, in the process of determining the target brightness value of each backlight area according to the gray scale number of a picture to be displayed and the gray scale number of an LCD panel, whether a mode of integral detection of a display screen or a mode of independent detection of dark gray scale and bright gray scale is adopted, the target brightness value of each backlight area can be determined only by finally falling into one backlight area; when implemented, the target luminance value of the backlight area may be determined as follows: determining each preset pixel area of which the gray scale number of a picture to be displayed exceeds the gray scale number of the LCD panel; determining a predetermined backlight area corresponding to the predetermined pixel area; and calculating a target brightness value of the preset backlight area according to the gray scale number of the picture to be displayed corresponding to the preset backlight area and the gray scale number of the LCD panel.
For example, the number of gray scales of the whole picture to be displayed is 500, which exceeds the number of gray scales of the LCD panel, but the gray scales which can be displayed by the LCD panel cannot be changed, so that the gray scales of the pixel area are insufficient to support the gray scale requirement of the picture to be displayed under the condition that the pixels of the LCD panel normally display the corresponding gray scales, and the brightness values of the backlight areas are required to be respectively adjusted to increase the number of gray scales, so that the picture display is finer; for accurate adjustment, the fewer pixels contained in the pixel region, the finer the brightness value adjustment of the backlight region; the brightness value may be increased or decreased from the reference brightness value of the backlight, and in particular, may be determined according to whether the gray scale is in a bright state or a dark state.
Taking the extreme example that one pixel area only comprises one pixel, the current pixel needs to display 276 gray scales, but the current pixel can only display 256 gray scales at maximum, and the other 20 gray scales need to be realized by adjusting the target brightness value through the backlight. When the backlight brightness is adjusted, the actual number of gray levels may be more than 20 gray levels, whether equal to 20 gray levels or more than 20 gray levels, so long as the extra 20 gray levels can be displayed.
And S103, sending brightness control signals to each backlight area according to each target brightness value so as to control different backlight areas to present different luminous brightness.
And sending a first brightness control signal to each preset backlight area and sending a second brightness control signal to other backlight areas except the preset backlight area, wherein the first brightness control signal is a reference brightness control signal adjusted according to the target brightness value and the backlight reference brightness value, and the second brightness control signal is a reference brightness control signal corresponding to the backlight reference brightness value.
According to the embodiment of the disclosure, the backlight is divided into a plurality of backlight areas to control, each backlight area corresponds to one pixel area, before the image is displayed, the gray scale number of the image to be displayed is determined, then the target brightness value of each backlight area is determined according to the gray scale number of the image to be displayed and the gray scale number of the LCD panel, and the brightness value of the backlight area corresponding to the pixel area with the gray scale number required to be increased is regulated, so that the increase of the gray scale number of the pixel area is realized, the whole process is simple to operate, the current situation of a product is not required to be changed, the product performance is improved, and the image is enabled to be displayed more finely.
In some cases, the screen does not need to show too many details, so that 256 gray scales of the existing LCD panel can be achieved, based on the above consideration, in the embodiments of the disclosure, before determining the target brightness value of each backlight area according to the gray scale number of the screen to be displayed and the gray scale number of the LCD panel, whether the gray scale number of the screen to be displayed is greater than the gray scale number of the LCD panel may be detected, and only if the gray scale number of the screen to be displayed is greater than the gray scale number of the LCD panel, the target brightness value of each backlight area is determined according to the gray scale number of the screen to be displayed and the gray scale number of the LCD panel, otherwise, the brightness values of the backlight areas are not adjusted, and all the reference brightness values are adopted.
The above-described processes are exemplarily described below with reference to the accompanying drawings and specific examples.
In general, 256 gray scale display is adopted in an LCD panel, and the embodiment of the disclosure can realize multi-gray scale display by a method of backlight brightness adjustment and LCD gray scale control, thereby improving product performance.
The structure of the existing display screen can be shown in fig. 2, and comprises a backlight and an LCD panel, wherein the backlight is divided into a plurality of areas and can be independently controlled (such as Mini-LEDs, etc.).
When the picture to be displayed is determined, the picture is operated to determine what gray scale is needed for the whole screen, for example, 500 gray scales are found to be needed after the operation is completed, which display areas need to realize bright state multi-gray scales and which display areas need to realize dark state multi-gray scales are further confirmed, and signals are respectively transmitted to a backlight control unit (used for controlling each backlight area) and an LCD panel. The backlight control unit controls different areas of the backlight to display different brightness, and the LCD panel is used for fine adjustment of the picture, so that multi-gray-scale display is realized.
When the LCD panel needs multiple gray levels in bright state, as shown in fig. 3, the brightness of the corresponding area of the backlight is adjusted, for example, the brightness of the corresponding bright state area of the screen is increased by 2 times, at this time, the brightness of the display screen is increased by two times under the same gray level, calculated by taking the brightness of the original screen L255 as 100, the brightness corresponding to L186 after the backlight increment can reach 100, and the gray level after L186 is the increased gray level, that is, 69 gray levels (255-186=69 gray levels) are added to the panel.
When the LCD panel needs dark-state multi-gray scale, as shown in fig. 4, the brightness of the corresponding area of the backlight is adjusted, for example, the brightness of the bright-state area of the corresponding frame is reduced by 0.2 times, at this time, the brightness of the display screen is reduced by 0.2 times under the same gray scale, calculated by taking the brightness of the original frame L255 as 100, at this time, the brightness is reduced to 20 (corresponding to 123 gray scales when the brightness of the backlight is not reduced), the LCD panel splits the brightness of 20 according to 255 gray scales, and 132 dark-state gray scales are increased (255-123=132 gray scales).
In specific implementation, how many gray scales are increased can be determined by the relation of the brightness and the gray scale corresponding relation table.
A second embodiment of the present disclosure provides an apparatus for displaying a picture, the apparatus having a structure schematically shown in fig. 5, including:
a first determining module 10, configured to determine the number of gray scales of a frame to be displayed; a second determining module 20, coupled to the first determining module 10, for determining a target brightness value of each backlight area according to the number of gray scales of the picture to be displayed and the number of gray scales of the LCD panel, wherein one backlight area corresponds to one pixel area, and one pixel area includes one or more pixels; and a transmitting module 30 coupled to the second determining module 20, for transmitting a brightness control signal to each backlight area according to each target brightness value, so as to control different backlight areas to present different light-emitting brightness.
The frame to be displayed is a frame to be displayed on the whole display screen, and because the frames have different display precision requirements, the gray scale number is determined according to the different display precision requirements of the frames. For example, the number of gray levels of a common picture is completely within 256 gray levels, so that the existing display screen can be realized, but if one picture needs 500 gray levels, the existing display screen cannot display according to the original precision of the picture, and a certain detail loss exists in the picture displayed on the display screen relative to the original picture data, so that the embodiment of the disclosure needs to determine what the number of gray levels of the whole picture to be displayed is.
The display screen of the embodiment of the disclosure is typically an LCD display screen, which further includes an LCD panel and a backlight, and in the case that the LCD panel cannot increase the gray scale, the embodiment of the disclosure considers that the gray scale number is increased by adjusting the backlight, so as to realize more gray scales.
In a specific implementation, the second determining module may include: the detection unit is used for detecting whether the gray scale number of the picture to be displayed is larger than that of the LCD panel; and the determining unit is used for determining the target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel under the condition that the gray scale number of the picture to be displayed is larger than the gray scale number of the LCD panel.
The second determination module (possibly the determination unit in some cases) is specifically configured to: determining each preset pixel area of which the gray scale number of a picture to be displayed exceeds the gray scale number of the LCD panel; determining a predetermined backlight area corresponding to the predetermined pixel area; and calculating a target brightness value of the preset backlight area according to the gray scale number of the picture to be displayed corresponding to the preset backlight area and the gray scale number of the LCD panel.
For LCD panels, the gray levels are generally classified into bright and dark states, for example, L0-L127 is a dark gray level, and L128-L255 is a bright gray level, so that when determining the target brightness value of each backlight area according to the number of gray levels of the to-be-displayed picture and the number of gray levels of the LCD panel, it may be determined as a whole, that is, whether the number of gray levels of the to-be-displayed picture is greater than 256, or it may be detected according to the bright gray level and the dark gray level, that is, whether the number of dark gray levels of the to-be-displayed picture is greater than 128, or whether the number of bright gray levels of the to-be-displayed picture is greater than 128.
For the mode of separately detecting the dark gray scale, when the number of the dark gray scales of the picture to be displayed is larger than that of the dark gray scales of the LCD panel, it is determined that more dark gray scales need to be displayed, and then 128 gray scales (L0-L127) corresponding to the original LCD panel cannot meet the dark state display requirement of the display picture, so that the increase of the dark gray scales can be realized by adjusting the target brightness value of the backlight area, that is, the backlight is downwards adjusted (the adjustment can be adjusted according to a certain proportion) under the condition of the original reference brightness value, the adjusted brightness value is used as the target brightness value, and further more gray scales can be displayed through superposition of the brightness of the LCD panel and the backlight.
For the mode of individually detecting the bright gray scale, when the number of the bright gray scales of the picture to be displayed is larger than that of the bright gray scales of the LCD panel, it is determined that more bright gray scales need to be displayed, and then 128 gray scales (L128-L255) corresponding to the original LCD panel cannot meet the bright display requirement of the display picture, so that the bright gray scales can be increased by adjusting the target brightness value of the backlight area, that is, the backlight is adjusted upwards (the adjustment can be adjusted according to a certain proportion) under the condition of the original reference brightness value, the adjusted brightness value is used as the target brightness value, and more gray scales can be displayed through superposition of the LCD panel and the backlight brightness.
Because one backlight area corresponds to one pixel area, in the process of determining the target brightness value of each backlight area according to the gray scale number of a picture to be displayed and the gray scale number of an LCD panel, whether a mode of integral detection of a display screen or a mode of independent detection of dark gray scale and bright gray scale is adopted, the target brightness value of each backlight area can be determined only by finally falling into one backlight area; when implemented, the target luminance value of the backlight area may be determined as follows: determining each preset pixel area of which the gray scale number of a picture to be displayed exceeds the gray scale number of the LCD panel; determining a predetermined backlight area corresponding to the predetermined pixel area; and calculating a target brightness value of the preset backlight area according to the gray scale number of the picture to be displayed corresponding to the preset backlight area and the gray scale number of the LCD panel.
For example, the number of gray scales of the whole picture to be displayed is 500, which exceeds the number of gray scales of the LCD panel, but the gray scales which can be displayed by the LCD panel cannot be changed, so that the gray scales of the pixel area are insufficient to support the gray scale requirement of the picture to be displayed under the condition that the pixels of the LCD panel normally display the corresponding gray scales, and the brightness values of the backlight areas are required to be respectively adjusted to increase the number of gray scales, so that the picture display is finer; for accurate adjustment, the fewer pixels contained in the pixel region, the finer the brightness value adjustment of the backlight region; the brightness value may be increased or decreased from the reference brightness value of the backlight, and in particular, may be determined according to whether the gray scale is in a bright state or a dark state.
Taking the extreme example that one pixel area only comprises one pixel, the current pixel needs to display 276 gray scales, but the current pixel can only display 256 gray scales at maximum, and the other 20 gray scales need to be realized by adjusting the target brightness value through the backlight. When the backlight brightness is adjusted, the actual number of gray levels may be more than 20 gray levels, whether equal to 20 gray levels or more than 20 gray levels, so long as the extra 20 gray levels can be displayed.
Since the target brightness value of each backlight area has been determined, the above-mentioned transmitting module is specifically configured to: and transmitting a first brightness control signal to each preset backlight area and transmitting a second brightness control signal to other backlight areas except the preset backlight area, wherein the first brightness control signal is a reference brightness control signal adjusted according to the target brightness value and the backlight reference brightness value, and the second brightness control signal is a reference brightness control signal corresponding to the backlight reference brightness value.
According to the embodiment of the disclosure, the backlight is divided into a plurality of backlight areas to control, each backlight area corresponds to one pixel area, before the image is displayed, the gray scale number of the image to be displayed is determined, then the target brightness value of each backlight area is determined according to the gray scale number of the image to be displayed and the gray scale number of the LCD panel, and the brightness value of the backlight area corresponding to the pixel area with the gray scale number required to be increased is regulated, so that the increase of the gray scale number of the pixel area is realized, the whole process is simple to operate, the current situation of a product is not required to be changed, the product performance is improved, and the image is enabled to be displayed more finely.
A third embodiment of the present disclosure provides a storage medium, which is a computer-readable medium storing a computer program that, when executed by a processor, implements the method provided by any embodiment of the present disclosure, including steps S11 to S13 as follows:
s11, determining the gray scale number of a picture to be displayed;
s12, determining target brightness values of backlight areas according to the gray scale number of a picture to be displayed and the gray scale number of an LCD panel, wherein one backlight area corresponds to one pixel area, and one pixel area comprises one or more pixels;
and S13, sending brightness control signals to each backlight area according to each target brightness value so as to control different backlight areas to present different luminous brightness.
When the computer program is executed by the processor to determine the target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel, the processor specifically executes the following steps: detecting whether the gray scale number of a picture to be displayed is larger than that of an LCD panel; and under the condition that the gray scale number of the picture to be displayed is larger than that of the LCD panel, determining the target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel.
When the computer program is executed by the processor to determine the target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel, the processor specifically executes the following steps: determining each preset pixel area of which the gray scale number of a picture to be displayed exceeds the gray scale number of the LCD panel; determining a predetermined backlight area corresponding to the predetermined pixel area; and calculating a target brightness value of the preset backlight area according to the gray scale number of the picture to be displayed corresponding to the preset backlight area and the gray scale number of the LCD panel.
The computer program is executed by the processor to perform the step of transmitting the luminance control signal to each backlight area according to each target luminance value, specifically, the processor performs the steps of: and transmitting a first brightness control signal to each preset backlight area and transmitting a second brightness control signal to other backlight areas except the preset backlight area, wherein the first brightness control signal is a reference brightness control signal adjusted according to the target brightness value and the backlight reference brightness value, and the second brightness control signal is a reference brightness control signal corresponding to the backlight reference brightness value.
According to the embodiment of the disclosure, the backlight is divided into a plurality of backlight areas to control, each backlight area corresponds to one pixel area, before the image is displayed, the gray scale number of the image to be displayed is determined, then the target brightness value of each backlight area is determined according to the gray scale number of the image to be displayed and the gray scale number of the LCD panel, and the brightness value of the backlight area corresponding to the pixel area with the gray scale number required to be increased is regulated, so that the increase of the gray scale number of the pixel area is realized, the whole process is simple to operate, the current situation of a product is not required to be changed, the product performance is improved, and the image is enabled to be displayed more finely.
Alternatively, in the present embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes. Optionally, in this embodiment, the processor performs the method steps described in the above embodiment according to the program code stored in the storage medium. Alternatively, specific examples in this embodiment may refer to examples described in the foregoing embodiments and optional implementations, and this embodiment is not described herein. It will be appreciated by those skilled in the art that the modules or steps of the disclosure described above may be implemented in a general purpose computing device, they may be centralized on a single computing device, or distributed across a network of computing devices, or they may alternatively be implemented in program code executable by computing devices, such that they may be stored in a memory device for execution by the computing devices and, in some cases, the steps shown or described may be performed in a different order than what is shown or described, or they may be implemented as individual integrated circuit modules, or as individual integrated circuit modules. As such, the present disclosure is not limited to any specific combination of hardware and software.
The fourth embodiment of the present disclosure provides an electronic device, which may include at least a memory 901 and a processor 902, where the memory 901 stores a computer program, and the processor 902 implements the method provided by any embodiment of the present disclosure when executing the computer program on the memory 901, as shown in fig. 6. Exemplary, the electronic device computer program steps are as follows S21 to S23:
s21, determining the gray scale number of a picture to be displayed;
s22, determining target brightness values of backlight areas according to the gray scale number of a picture to be displayed and the gray scale number of an LCD panel, wherein one backlight area corresponds to one pixel area, and one pixel area comprises one or more pixels;
s23, sending brightness control signals to the backlight areas according to the target brightness values so as to control the different backlight areas to present different luminous brightness.
The processor, when executing the computer program stored on the memory for determining the target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel, specifically executes the following computer program: detecting whether the gray scale number of a picture to be displayed is larger than that of an LCD panel; and under the condition that the gray scale number of the picture to be displayed is larger than that of the LCD panel, determining the target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel.
The processor, when executing the computer program stored on the memory for determining the target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel, specifically executes the following computer program: determining each preset pixel area of which the gray scale number of a picture to be displayed exceeds the gray scale number of the LCD panel; determining a predetermined backlight area corresponding to the predetermined pixel area; and calculating a target brightness value of the preset backlight area according to the gray scale number of the picture to be displayed corresponding to the preset backlight area and the gray scale number of the LCD panel.
The processor, when executing the computer program stored on the memory for transmitting the brightness control signal to each backlight area according to each target brightness value, specifically executes the computer program as follows: and transmitting a first brightness control signal to each preset backlight area and transmitting a second brightness control signal to other backlight areas except the preset backlight area, wherein the first brightness control signal is a reference brightness control signal adjusted according to the target brightness value and the backlight reference brightness value, and the second brightness control signal is a reference brightness control signal corresponding to the backlight reference brightness value.
According to the embodiment of the disclosure, the backlight is divided into a plurality of backlight areas to control, each backlight area corresponds to one pixel area, before the image is displayed, the gray scale number of the image to be displayed is determined, then the target brightness value of each backlight area is determined according to the gray scale number of the image to be displayed and the gray scale number of the LCD panel, and the brightness value of the backlight area corresponding to the pixel area with the gray scale number required to be increased is regulated, so that the increase of the gray scale number of the pixel area is realized, the whole process is simple to operate, the current situation of a product is not required to be changed, the product performance is improved, and the image is enabled to be displayed more finely.
Furthermore, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments having equivalent elements, modifications, omissions, combinations (e.g., of the various embodiments across schemes), adaptations or alterations based on the present disclosure. Elements in the claims are to be construed broadly based on the language employed in the claims and are not limited to examples described in the present specification or during the practice of the present application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.
The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more aspects thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the above detailed description, various features may be grouped together to streamline the disclosure. This is not to be interpreted as an intention that the disclosed features not being claimed are essential to any claim. Rather, the disclosed subject matter may include less than all of the features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with one another in various combinations or permutations. The scope of the disclosure should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
While various embodiments of the present disclosure have been described in detail, the present disclosure is not limited to these specific embodiments, and various modifications and embodiments can be made by those skilled in the art on the basis of the concepts of the present disclosure, and these modifications and modifications should be within the scope of the present disclosure as claimed.

Claims (4)

1. A method of displaying a picture, comprising:
determining the gray scale number of a picture to be displayed;
determining target brightness values of backlight areas according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel, wherein one backlight area corresponds to one pixel area, and one pixel area comprises one or more pixels;
sending brightness control signals to each backlight area according to each target brightness value so as to control different backlight areas to present different luminous brightness;
the determining the target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel comprises the following steps:
detecting whether the gray scale number of the picture to be displayed is larger than the gray scale number of the LCD panel;
determining a target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel under the condition that the gray scale number of the picture to be displayed is larger than the gray scale number of the LCD panel;
the determining the target brightness value of each backlight area according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel comprises the following steps:
determining each preset pixel area of the picture to be displayed, wherein the gray scale number of the picture to be displayed exceeds the gray scale number of the LCD panel;
determining a preset backlight area corresponding to the preset pixel area;
calculating a target brightness value of the preset backlight area according to the gray scale number of the picture to be displayed corresponding to the preset backlight area and the gray scale number of the LCD panel;
the sending a brightness control signal to each backlight area according to each target brightness value comprises the following steps:
and sending a first brightness control signal to each preset backlight area, and sending a second brightness control signal to other backlight areas except the preset backlight area, wherein the first brightness control signal is a reference brightness control signal adjusted according to the target brightness value and a backlight reference brightness value, and the second brightness control signal is a reference brightness control signal corresponding to the backlight reference brightness value.
2. An apparatus for displaying a picture, comprising:
the first determining module is used for determining the gray scale number of the picture to be displayed;
a second determining module, configured to determine a target brightness value of each backlight area according to the number of gray scales of the frame to be displayed and the number of gray scales of the LCD panel, where one backlight area corresponds to one pixel area, and one pixel area includes one or more pixels;
the sending module is used for sending brightness control signals to each backlight area according to each target brightness value so as to control different backlight areas to present different luminous brightness;
the second determining module includes:
the detection unit is used for detecting whether the gray scale number of the picture to be displayed is larger than that of the LCD panel;
a determining unit, configured to determine, when the number of gray levels of the frame to be displayed is greater than the number of gray levels of the LCD panel, a target luminance value of each backlight area according to the number of gray levels of the frame to be displayed and the number of gray levels of the LCD panel;
the second determining module is specifically configured to:
determining each preset pixel area of the picture to be displayed, wherein the gray scale number of the picture to be displayed exceeds the gray scale number of the LCD panel;
determining a preset backlight area corresponding to the preset pixel area;
calculating a target brightness value of the preset backlight area according to the gray scale number of the picture to be displayed corresponding to the preset backlight area and the gray scale number of the LCD panel;
the sending module is specifically configured to:
and sending a first brightness control signal to each preset backlight area, and sending a second brightness control signal to other backlight areas except the preset backlight area, wherein the first brightness control signal is a reference brightness control signal adjusted according to the target brightness value and a backlight reference brightness value, and the second brightness control signal is a reference brightness control signal corresponding to the backlight reference brightness value.
3. A storage medium storing a computer program, which when executed by a processor performs the steps of the method of claim 1.
4. An electronic device comprising at least a memory, a processor, the memory having stored thereon a computer program, characterized in that the processor, when executing the computer program on the memory, implements the steps of the method of claim 1.
CN202210540464.6A 2022-05-17 2022-05-17 Method and device for displaying picture, storage medium and electronic equipment Active CN114927104B (en)

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