CN114927104A - 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
CN114927104A
CN114927104A CN202210540464.6A CN202210540464A CN114927104A CN 114927104 A CN114927104 A CN 114927104A CN 202210540464 A CN202210540464 A CN 202210540464A CN 114927104 A CN114927104 A CN 114927104A
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gray scale
backlight
picture
scale number
displayed
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CN114927104B (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 and a device for displaying a picture, a storage medium and an electronic device, wherein the method comprises the following steps: determining the gray scale number of a picture to be displayed; determining a 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 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 brightness. The embodiment of the disclosure divides the backlight into a plurality of backlight areas for control, 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 needing to increase the gray scale number, the whole process is simple to operate, the current situation of products does not need to be changed, the product performance is improved, and the display of the picture is more exquisite.

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 an apparatus for displaying a picture, a storage medium, and an electronic device.
Background
The existing LCD display products generally adopt 256 gray levels (L0-L255) for display, thereby ensuring the basic display requirements of pictures; with the requirement of richer display detail content of the existing picture, the fineness of screen display is required to be higher and higher, however, the gray scale quantity of the existing LCD display product is fixed, the more refined display requirement cannot be met, and the product performance is poorer.
Disclosure of Invention
In view of this, the embodiments of the present disclosure provide 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: with the requirement of richer display detail content of the existing picture, the fineness of screen display is required to be higher and higher, however, the gray scale quantity of the existing LCD display product is fixed, the more refined display requirement 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 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, 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 brightness.
In some embodiments, the determining the target brightness value of each backlight area according to the gray scale number of the to-be-displayed picture 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 to-be-displayed picture and the gray scale number of the LCD panel includes: determining each preset pixel area of which the gray scale number of the 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 the target brightness value of the preset backlight area according to the gray scale number of the to-be-displayed picture corresponding to the preset backlight area and the gray scale number of the LCD panel.
In some embodiments, the sending of the brightness control signal to each backlight area according to each of the target brightness values 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 areas, 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.
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 quantity of the picture to be displayed; the second determining module 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, wherein one backlight area corresponds to one pixel area, and one pixel area comprises 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 brightness.
In some embodiments, the second determining module comprises: the detection unit is used for detecting whether the gray scale quantity 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 quantity of the picture to be displayed and the gray scale quantity of the LCD panel under the condition that the gray scale quantity of the picture to be displayed is greater than the gray scale quantity of the LCD panel.
In some embodiments, the second determining module is specifically configured to: determining each preset pixel area of which the gray scale number of the 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 the target brightness value of the preset backlight area according to the gray scale number of the to-be-displayed picture 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 the 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 a storage medium storing a computer program, where the computer program is executed by a processor to implement the method provided in any embodiment of the present disclosure.
On the other hand, the embodiment of the present disclosure provides an electronic device, which at least includes a memory and a processor, where the memory stores a computer program, and the processor implements the method provided in any embodiment of the present disclosure when executing the computer program on the memory.
The embodiment of the disclosure divides the backlight into a plurality of backlight areas for control, each backlight area corresponds to one pixel area, before a picture is displayed, the gray scale number of the picture to be displayed is determined firstly, then the target brightness value of each backlight area is determined according to the gray scale number of the picture 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 needing to increase the gray scale number is adjusted, so that the increase of the gray scale number of the pixel area is realized, the operation of the whole process is simple, the current situation of a product does not need to be changed, the product performance is improved, and the display of the picture is more delicate.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and for those skilled in the art, other drawings may be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for displaying a screen according to a first embodiment of the 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 luminance graph of an LCD panel requiring bright multi-gray levels according to a first embodiment of the present disclosure;
FIG. 4 is a graph showing luminance curves when a dark multi-gray scale is required for an LCD panel according to a first embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an apparatus for displaying a picture according to a second embodiment of the 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 clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.
The existing LCD display product is limited by voltage, so that the gray scale number of the display product is difficult to increase, and the more refined display requirement cannot be realized. However, as the existing picture needs richer display detail content, the fineness of screen display is required to be higher and higher, the gray scale quantity of the existing LCD display product is fixed, the more refined display requirement cannot be met, and the product performance is poorer.
Based on the above considerations, the first embodiment of the present disclosure provides a method for displaying a picture, the flow of which is shown in fig. 1, and the method includes steps S101 to S103:
s101, determining the gray scale number of the picture to be displayed.
The picture to be displayed is a picture to be displayed on the whole display screen, and the number of gray scales is determined according to different display precision requirements of the picture due to different display precision requirements of the picture. For example, if the number of gray levels of a common picture is completely within 256 gray levels, the conventional display screen can be implemented, but if one picture needs 500 gray levels, the conventional display screen cannot display the picture according to the original precision of the picture, and the picture displayed on the display screen has a certain loss of detail relative to the original picture data, so that the number of gray levels of the whole picture to be displayed needs to be determined first.
The display screen of the embodiment of the disclosure is generally an LCD display screen, the LCD display screen further comprises an LCD panel and a backlight, and under the condition that the LCD panel cannot increase gray scales, the embodiment of the disclosure starts with the backlight and increases the number of the gray scales by adjusting the backlight, so that more gray scales are realized.
S102, 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, wherein one backlight area corresponds to one pixel area, and one pixel area comprises one or more pixels.
For the LCD panel, the gray scales are usually divided into a bright state and a dark state, for example, L0-L127 are the dark state gray scales, and L128-L255 are the bright state gray scales, so when the target luminance value of each backlight area is determined according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel, the target luminance value may be determined as a whole, that is, whether the gray scale number of the picture to be displayed is greater than 256 is detected, or the target luminance value may be detected according to the bright state gray scale and the dark state gray scale, that is, whether the dark state gray scale number of the picture to be displayed is greater than 128 is detected, and whether the bright state gray scale number of the picture to be displayed is greater than 128 is detected.
For the way of separately detecting the dark state gray scales, when the number of the dark state gray scales of the picture to be displayed is greater than that of the LCD panel, it is determined that more dark state gray scales need to be presented, and the 128 gray scales (L0-L127) corresponding to the original LCD panel cannot meet the dark state presentation requirement of the display picture, so that the increase of the dark state gray scales can be realized by adjusting the target brightness value of the backlight area, that is, the backlight is adjusted downwards (the adjustment may be according to a certain proportion) under the original reference brightness value, the adjusted brightness value is used as the target brightness value, and further more gray scales can be presented by superimposing the LCD panel and the backlight brightness.
For the independent detection mode of the bright-state gray scale, when the number of the bright-state gray scale of the picture to be displayed is greater than that of the LCD panel, it is determined that more bright-state gray scales need to be presented, and the 128 gray scale (L128-L255) corresponding to the original LCD panel cannot meet the bright-state presentation requirement of the displayed picture, so that the increase of the bright-state gray scale can be realized by adjusting the target brightness value of the backlight area, that is, the backlight is adjusted upwards (the adjustment can be according to a certain proportion) under the condition of the original reference brightness value, and the adjusted brightness value is used as the target brightness value, so that more gray scales can be presented by superposing 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 the picture to be displayed and the gray scale number of the LCD panel, no matter a display screen integral detection mode is adopted, or a dark state gray scale and a bright state gray scale are adopted to be detected separately, the target brightness value of each backlight area can be determined only by finally realizing the target brightness value in one backlight area; in implementation, the target brightness value of the backlight area may be determined according to the following process: determining each preset pixel area with the gray scale number of the picture to be displayed exceeding the gray scale number of the LCD panel; determining a predetermined backlight area corresponding to the predetermined pixel area; and calculating the 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 to-be-displayed picture is 500, which exceeds the number of gray scales of the LCD panel, but the gray scales that can be presented by the LCD panel itself cannot be changed, so that under the condition that the pixels of the LCD panel normally display the corresponding gray scales, the gray scales of the pixel regions are not enough to support the gray scale requirements of the to-be-displayed picture, and therefore, the luminance values of the backlight regions need to be respectively adjusted to increase the number of gray scales, so that the picture is displayed more finely; for precise adjustment, the fewer pixels contained in the pixel region, the finer the adjustment of the luminance value of the backlight region; the brightness value can be increased or decreased on the backlight reference brightness value, and the specific situation is determined according to whether the gray scale is a bright state or a dark state.
Further, taking an extreme case where one pixel region includes only one pixel, the current pixel needs to present 276 gray levels, but the current pixel can present only 256 gray levels at maximum, and the other 20 gray levels need to be realized by adjusting the target brightness value through the backlight. When the backlight brightness is adjusted, the number of gray scales actually increased may exceed 20 gray scales, and no matter the number is equal to 20 gray scales or exceeds 20 gray scales, as long as the extra 20 gray scales can be displayed.
And S103, 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 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 because the target brightness value of each backlight area is determined, 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.
The backlight is divided into a plurality of backlight areas to be controlled, each backlight area corresponds to one pixel area, before a picture is displayed, the gray scale number of the picture to be displayed is determined, then the target brightness value of each backlight area is determined according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel, the brightness value of the backlight area corresponding to the pixel area needing to increase the gray scale number is adjusted, the increase of the gray scale number of the pixel area is achieved, the operation of the whole process is simple, the current situation of products does not need to be changed, the product performance is improved, and the picture is displayed more finely.
In some cases, the image does not need to show excessive details, so that 256 gray levels of the existing LCD panel can be realized, based on the above consideration, in the embodiment of the present disclosure, before determining the target brightness value of each backlight area according to the gray level number of the image to be displayed and the gray level number of the LCD panel, it may be detected whether the gray level number of the image to be displayed is greater than the gray level number of the LCD panel, only when the gray level number of the image to be displayed is greater than the gray level number of the LCD panel, the target brightness value of each backlight area is determined according to the gray level number of the image to be displayed and the gray level number of the LCD panel, otherwise, the brightness value of the backlight area is not adjusted, and the reference brightness value is adopted.
The above process is exemplified with reference to the accompanying drawings and specific examples.
The LCD panel generally adopts 256 gray scale display, and the multi-gray scale display can be realized by the method of backlight brightness adjustment and LCD gray scale control, so that the product performance is improved.
The structure of the conventional display screen can be as shown in fig. 2, and comprises a backlight and an LCD panel, wherein the backlight is divided into a plurality of regions, which can be independently controlled (e.g. Mini-LEDs, etc.).
When the picture required to be displayed is determined, the picture is operated to determine the number of gray scales required by the whole screen, for example, if 500 gray scales are found after calculation, 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 determined, 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 present different brightness, and the LCD panel is used for finely adjusting the picture, thereby realizing multi-gray scale display.
When the LCD panel needs bright multi-gray scale, as shown in fig. 3, the brightness of the corresponding area of the backlight is adjusted, and if the brightness of the bright area of the corresponding frame is increased by 2 times, the brightness of the display screen is increased by two times under the same gray scale, calculated by taking the brightness of the original frame L255 as 100, the brightness corresponding to L186 can reach 100 after backlight increment, and the gray scale after L186 is the increased gray scale, that is, the panel is increased by 69 gray scale (255-186 ═ 69 gray scale).
When the LCD panel needs dark multi-gray scale, as shown in fig. 4, the brightness of the corresponding area of the backlight is adjusted, if the brightness of the bright 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, and the brightness of the original frame L255 is calculated as 100, at this time, the brightness is reduced to 20 (corresponding to the 123 gray scale when the brightness of the backlight is not reduced), and the LCD panel splits the brightness of 20 according to the 255 gray scales, so that the dark gray scale is increased by 132 (255-123-132 gray scale).
In specific implementation, the gray scales which are increased can be determined through the relation of the brightness and 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:
the first determining module 10 is used for determining the gray scale quantity of the picture to be displayed; a second determining module 20, coupled to the first determining module 10, configured to determine a target brightness value of each backlight area according to the gray scale number of the to-be-displayed picture and the gray scale number 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 30, coupled to the second determining module 20, is configured to send a brightness control signal to each backlight area according to each target brightness value, so as to control different backlight areas to present different brightness.
The picture to be displayed is a picture to be displayed on the whole display screen, and the number of gray scales is determined according to different display precision requirements of the picture due to different display precision requirements of the picture. For example, if the number of gray levels of a common picture is completely within 256 gray levels, the conventional display screen can be implemented, but if one picture needs 500 gray levels, the conventional display screen cannot display the picture according to the original precision of the picture, and the picture displayed on the display screen has a certain loss of detail relative to the original picture data, so that the number of gray levels of the whole picture to be displayed needs to be determined first.
The display screen of the embodiment of the disclosure is generally an LCD display screen, the LCD display screen further comprises an LCD panel and a backlight, and under the condition that the LCD panel cannot increase gray scales, the embodiment of the disclosure starts with the backlight and increases the number of the gray scales by adjusting the backlight, so that more gray scales are realized.
In a specific implementation, the second determining module may include: the detection unit is used for detecting whether the gray scale quantity 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 determining module (which may be a determining unit in some cases) is specifically configured to: determining each preset pixel area with the gray scale number of the picture to be displayed exceeding the gray scale number of the LCD panel; determining a predetermined backlight area corresponding to the predetermined pixel area; and calculating the 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 the LCD panel, the gray scales are usually divided into a bright state and a dark state, for example, L0-L127 are the dark state gray scales, and L128-L255 are the bright state gray scales, so when the target luminance value of each backlight area is determined according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel, the target luminance value may be determined as a whole, that is, whether the gray scale number of the picture to be displayed is greater than 256 is detected, or the target luminance value may be detected according to the bright state gray scale and the dark state gray scale, that is, whether the dark state gray scale number of the picture to be displayed is greater than 128 is detected, and whether the bright state gray scale number of the picture to be displayed is greater than 128 is detected.
For the way of separately detecting the dark state gray scales, when the number of the dark state gray scales of the picture to be displayed is greater than that of the LCD panel, it is determined that more dark state gray scales need to be presented, and the 128 gray scales (L0-L127) corresponding to the original LCD panel cannot meet the dark state presentation requirement of the display picture, so that the increase of the dark state gray scales can be realized by adjusting the target brightness value of the backlight area, that is, the backlight is adjusted downwards (the adjustment may be according to a certain proportion) under the original reference brightness value, the adjusted brightness value is used as the target brightness value, and further more gray scales can be presented by superimposing the LCD panel and the backlight brightness.
For the independent detection mode of the bright-state gray scale, when the number of the bright-state gray scale of the picture to be displayed is greater than that of the LCD panel, it is determined that more bright-state gray scales need to be presented, and the 128 gray scale (L128-L255) corresponding to the original LCD panel cannot meet the bright-state presentation requirement of the displayed picture, so that the increase of the bright-state gray scale can be realized by adjusting the target brightness value of the backlight area, that is, the backlight is adjusted upwards (the adjustment can be according to a certain proportion) under the condition of the original reference brightness value, and the adjusted brightness value is used as the target brightness value, so that more gray scales can be presented by superposing 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 the picture to be displayed and the gray scale number of the LCD panel, no matter a display screen integral detection mode is adopted, or a dark state gray scale and a bright state gray scale are adopted to be detected separately, the target brightness value of each backlight area can be determined only by finally realizing the target brightness value in one backlight area; in implementation, the target brightness value of the backlight area may be determined according to the following process: determining each preset pixel area with the gray scale number of the picture to be displayed exceeding the gray scale number of the LCD panel; determining a predetermined backlight area corresponding to the predetermined pixel area; and calculating the 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 to-be-displayed picture is 500, which exceeds the number of gray scales of the LCD panel, but the gray scales that can be presented by the LCD panel itself cannot be changed, so that under the condition that the pixels of the LCD panel normally display the corresponding gray scales, the gray scales of the pixel regions are not enough to support the gray scale requirements of the to-be-displayed picture, and therefore, the luminance values of the backlight regions need to be respectively adjusted to increase the number of gray scales, so that the picture is displayed more finely; for precise adjustment, the less pixels contained in the pixel region, the finer the adjustment of the luminance value of the backlight region; the brightness value can be increased or decreased on the backlight reference brightness value, and the specific situation is determined according to whether the gray scale is a bright state or a dark state.
Further, taking an extreme case where one pixel region includes only one pixel, the current pixel needs to present 276 gray levels, but the current pixel can present only 256 gray levels at maximum, and the other 20 gray levels need to be realized by adjusting the target brightness value through the backlight. When the backlight brightness is adjusted, the number of gray scales actually increased may exceed 20 gray scales, and no matter the number is equal to 20 gray scales or exceeds 20 gray scales, as long as the extra 20 gray scales can be displayed.
Since the target brightness value of each backlight area is already determined, 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 areas, 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.
The backlight is divided into a plurality of backlight areas to be controlled, each backlight area corresponds to one pixel area, before a picture is displayed, the gray scale number of the picture to be displayed is determined, then the target brightness value of each backlight area is determined according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel, the brightness value of the backlight area corresponding to the pixel area needing to increase the gray scale number is adjusted, the increase of the gray scale number of the pixel area is achieved, the operation of the whole process is simple, the current situation of products does not need to be changed, the product performance is improved, and the picture is displayed more finely.
A third embodiment of the present disclosure provides a storage medium, which is a computer-readable medium storing a computer program, which when executed by a processor implements the method provided in any embodiment of the present disclosure, including the following steps S11 to S13:
s11, determining the gray scale number of the picture to be displayed;
s12, 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, wherein one backlight area corresponds to one pixel area, and one pixel area comprises one or more pixels;
and S13, 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 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 greater 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 with the gray scale number of the picture to be displayed exceeding the gray scale number of the LCD panel; determining a preset backlight area corresponding to the preset pixel area; and calculating the target brightness value of the preset backlight area according to the gray scale number of the to-be-displayed picture corresponding to the preset backlight area and the gray scale number of the LCD panel.
When the computer program is executed by the processor for transmitting the brightness control signal to each backlight area according to each target brightness value, the computer program is specifically executed by the processor for: 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 areas, 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.
The backlight is divided into a plurality of backlight areas to be controlled, each backlight area corresponds to one pixel area, before a picture is displayed, the gray scale number of the picture to be displayed is determined, then the target brightness value of each backlight area is determined according to the gray scale number of the picture to be displayed and the gray scale number of the LCD panel, the brightness value of the backlight area corresponding to the pixel area needing to increase the gray scale number is adjusted, the increase of the gray scale number of the pixel area is achieved, the operation of the whole process is simple, the current situation of products does not need to be changed, the product performance is improved, and the picture is displayed more finely.
Optionally, in this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and various media capable of storing program codes. Optionally, in this embodiment, the processor executes the method steps described in the above embodiments according to the program code stored in the storage medium. Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again. It will be apparent to those skilled in the art that the modules or steps of the present disclosure described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a memory device and executed by a computing device, and in some cases, the steps shown or described may be executed out of order, or separately as individual integrated circuit modules, or multiple modules or steps thereof may be implemented as a single integrated circuit module. As such, the present disclosure is not limited to any specific combination of hardware and software.
A fourth embodiment of the present disclosure provides an electronic device, a schematic structural diagram of the electronic device may be as shown in fig. 6, where the electronic device includes at least a memory 901 and a processor 902, the memory 901 stores a computer program, and the processor 902, when executing the computer program on the memory 901, implements the method provided in any embodiment of the present disclosure. Illustratively, the electronic device computer program steps are as follows S21 through S23:
s21, determining the gray scale number of the picture to be displayed;
s22, 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, wherein one backlight area corresponds to one pixel area, and one pixel area comprises one or more pixels;
and S23, sending brightness control signals to the backlight areas according to the target brightness values to control the different backlight areas to present different brightness.
When the processor executes the computer program which is stored in the memory and determines 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 following computer programs are specifically executed: 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 processor executes the computer program which is stored in the memory and determines 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 following computer programs are specifically executed: determining each preset pixel area with the gray scale number of the picture to be displayed exceeding the gray scale number of the LCD panel; determining a predetermined backlight area corresponding to the predetermined pixel area; and calculating the 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 a computer program stored on the memory for transmitting a brightness control signal to each backlight area according to each target brightness value, specifically executes the following computer program: 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 areas, 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.
The embodiment of the disclosure divides the backlight into a plurality of backlight areas for control, each backlight area corresponds to one pixel area, before a picture is displayed, the gray scale number of the picture to be displayed is determined firstly, then the target brightness value of each backlight area is determined according to the gray scale number of the picture 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 needing to increase the gray scale number is adjusted, so that the increase of the gray scale number of the pixel area is realized, the operation of the whole process is simple, the current situation of a product does not need to be changed, the product performance is improved, and the display of the picture is more delicate.
Moreover, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments based on the disclosure with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the 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 versions 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 foregoing detailed description, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, the subject matter of the present disclosure may lie in less than all 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 the embodiments can be combined with each other 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.
Although the present disclosure has been described in detail with reference to the specific embodiments, it should be understood that the present disclosure is not limited to those precise embodiments, and that various changes and modifications may be effected therein by one skilled in the art based on the teachings herein.

Claims (10)

1. A method for displaying a picture, comprising:
determining the gray scale number of a picture to be displayed;
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, 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 brightness.
2. The method as claimed in claim 1, wherein the determining the target brightness value of each backlight area according to the gray scale number of the frame to be displayed and the gray scale number of the LCD panel comprises:
detecting whether the gray scale number of the picture to be displayed is larger than that of the LCD panel;
and under the condition that the gray scale number of the picture to be displayed is greater 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.
3. The method according to claim 1 or 2, wherein 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:
determining each preset pixel area of which the gray scale number of the 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 the target brightness value of the preset backlight area according to the gray scale number of the to-be-displayed picture corresponding to the preset backlight area and the gray scale number of the LCD panel.
4. The method of claim 1, wherein said sending a brightness control signal to each backlight region according to each of said target brightness values comprises:
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.
5. An apparatus for displaying a picture, comprising:
the first determining module is used for determining the gray scale quantity of the picture to be displayed;
the second determining module 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, wherein one backlight area corresponds to one pixel area, and one pixel area comprises 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 brightness.
6. The apparatus of claim 5, wherein the second determining module comprises:
the detection unit is used for detecting whether the gray scale quantity 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.
7. The apparatus of claim 5 or 6, wherein the second determining module is specifically configured to:
determining each preset pixel area of which 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 the target brightness value of the preset backlight area according to the gray scale number of the to-be-displayed picture corresponding to the preset backlight area and the gray scale number of the LCD panel.
8. The apparatus of claim 5, wherein 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 areas, 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.
9. A storage medium storing a computer program, characterized in that the computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
10. An electronic device comprising at least a memory, a processor, the memory having a computer program stored thereon, wherein the processor, when executing the computer program on the memory, is adapted to carry out the steps of the method of any of claims 1 to 4.
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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