CN117953797A - Display control method, display control device, display panel and display device - Google Patents
Display control method, display control device, display panel and display device Download PDFInfo
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Abstract
The disclosure relates to a display control method, a display control device, a display panel and a display device in the technical field of display, wherein the display control method comprises the following steps: acquiring first picture information to be displayed in a current frame and second picture information displayed in a previous frame; comparing the first picture information with the second picture information to determine a picture area with a difference; display data for the picture areas having the differences are transmitted to the display panel to control the display panel to update the display picture. When the display picture of the display panel is updated, the first picture information and the second picture information are compared to determine the picture area with the difference, and only the display data corresponding to the picture area with the difference is transmitted to the display panel, so that the display picture of the difference area is updated, the display data of the picture area without the difference is not required to be transmitted to the display panel, the repeated data transmission of repeated pictures is reduced, the power consumption of data transmission is reduced, and the panel power consumption is saved.
Description
Technical Field
The disclosure relates to the technical field of display, and in particular relates to a display control method, a display control device, a display panel and a display device.
Background
With the development of display technology, more and more display devices are applied to people's daily life. The all-weather display (Always On Display, AOD) mode of the display device is a function that allows useful thumbnail information to be displayed. Basic information such as a clock, calendar, etc. can be displayed even when the display device is turned off, and the user will be able to view the notification in the most convenient way anytime and anywhere.
In the related art, the display screen may be divided into a dynamic display area and a static display area in the AOD mode, where the dynamic display area performs data transmission to update the dynamic screen, for example, to display real time, and the static display area does not need to perform data transmission because the dynamic display area does not need to update the screen, so that power consumption may be reduced. However, the display method described above is currently used only in the AOD mode and is limited to the division of the region. In other display scenarios in the related art, the display screen cannot be divided based on the fixed area, and the switching of the display screen generally adopts a mode of transmitting data in a full-screen manner, which results in larger power consumption.
Disclosure of Invention
In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a display control method, a display control device, a display panel, and a display device.
In a first aspect, the present disclosure provides a display control method for controlling a display screen of a display panel, including:
Acquiring first picture information to be displayed in a current frame and second picture information displayed in a previous frame;
comparing the first picture information with the second picture information to determine a picture area with a difference;
and transmitting display data of the picture areas with the differences to the display panel to control the display panel to update a display picture.
In a second aspect, the present disclosure further provides a display control apparatus for controlling a display screen of a display panel, including:
The information acquisition module is used for acquiring first picture information to be displayed in the current frame and second picture information displayed in the previous frame;
The information comparison module is used for comparing the first picture information with the second picture information and determining a picture area with a difference;
And the data transmission module is used for transmitting the display data aiming at the picture areas with the differences to the display panel so as to control the display panel to update the display picture.
In a third aspect, the present disclosure further provides a display panel, where display screen update control is performed based on the steps of any one of the above display control methods.
In a fourth aspect, the present disclosure also provides a display apparatus including a display panel, a memory, and a controller;
The memory stores executable programs or instructions;
The controller executes the program or instructions to implement the steps of the display control method as described in any one of the above = seeds.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
According to the display control method, when the display panel is controlled to display the picture, the first picture information to be displayed in the current frame and the second picture information which is already displayed in the previous frame are acquired, the first picture information is compared with the second picture information, the picture area with the difference in the picture information is determined, only display data corresponding to the picture area with the difference are transmitted to the display panel, the display panel updates the picture of the picture area with the difference according to the received display data, the picture area without the difference does not need to transmit the display data, and the original picture is kept, so that the data transmission and the picture update of the local area are realized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic flow chart of a display control method according to an embodiment of the disclosure;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the disclosure;
fig. 3 is a schematic structural diagram of a display control device according to an embodiment of the disclosure;
Fig. 4 is a schematic structural diagram of a display device according to an embodiment of the disclosure.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.
In view of the technical problems described in the background art, although the AOD mode can realize transmission of only a part of picture data, thereby realizing reduction of data transmission power consumption, the AOD mode is limited to a special area division mode and cannot be widely applied to other display modes.
In view of at least one of the above problems, an embodiment of the present disclosure provides a display panel control method, when updating a display screen of a display panel, by comparing, in real time, a determined screen area having a difference between first screen information and second screen information, transmitting display data corresponding to the screen area having the difference to the display panel, and updating the display screen of the area, there is no need to transmit display data of the screen area having no difference to the display panel, thereby reducing repetitive data transmission of repeated screens, reducing power consumption of data transmission, and therefore, by pre-judging an input screen in advance, adopting a mode of locally transmitting display data for the difference screen, saving panel power consumption.
In the process of transmitting the picture information, the level of a communication interface of a control main board connected with the display panel is changed, so that the waveform is changed, and the more the picture information is transmitted, the longer the waveform is changed; the less picture information is transmitted, the shorter the time for waveform change.
Based on this, in order to verify the scheme, the screen information of a part of the screen can be changed by designing a special display screen, and the screen information of the rest of the screen can be kept unchanged. When the picture of the display panel is updated, only the area with the changed picture information is updated, and the rest areas keep the original picture unchanged. The waveform state of the communication interface of the control main board is detected while the picture changes, the picture of the area where the picture information changes is only updated, the waveform change time of the communication interface is shorter, and further the reduction of the transmitted picture information data can be known.
The display control method, the display control device, the display panel and the display device provided by the embodiment of the disclosure are exemplarily described below with reference to the accompanying drawings.
Fig. 1 is a flow chart of a display control method according to an embodiment of the disclosure, where the display control method is used for controlling a display screen of a display panel and may be executed by a motherboard or a driver.
As shown in fig. 1, the display control method may include the steps of:
s110, acquiring first picture information to be displayed in the current frame and second picture information displayed in the previous frame.
The first screen information and the second screen information acquired by the control main board of the display panel are gray scale information of each color pixel.
S120, comparing the first picture information with the second picture information to determine a picture area with a difference.
The control main board of the display panel compares the gray level information of the current frame of the display picture with the gray level information displayed by one frame of the display picture, when the difference which can be resolved by human eyes exists between two gray level information in a certain area, for example, the gray level is 3 or 2 gray levels, the human eyes can easily recognize the difference due to the large change difference between the gray levels, therefore, when the difference between the two gray levels is only one level, the difference which can be resolved by the human eyes can be determined, and the difference 1 level between the two gray level information in the certain area can be set, and the area is determined to be the picture area with the difference. For example, when the gray scale is 253 or 254 gray scale, since the variation difference between the gray scales of each level is small, only when the difference between two gray scales is different by a plurality of levels of human eyes, it is possible to set the difference between two gray scale information in a certain area, for example, 8 levels, and determine the area as a picture area having the difference.
The screen information may be other screen information than the gradation information, so long as the screen region having the difference can be specified, and the screen information is not limited thereto.
S130, transmitting display data of the picture areas with the differences to the display panel to control the display panel to update the display picture.
For example, the display data is, for example, source data, gray-scale information, etc. of the corresponding pixels, and after determining the picture area having the difference, the control main board of the display panel transmits the display data of the picture area to the display panel, and the display panel updates the picture of the picture area having the difference from the previous frame picture to the current frame picture according to the received display data.
The screen information may be display data other than source data and gradation information, and is not limited thereto.
When the display panel is controlled to display the picture, the control main board of the display panel acquires the first picture information to be displayed in the current frame of the display panel and the second picture information already displayed in the previous frame of the display panel, compares the acquired first picture information with the acquired second picture information, and screens out picture areas with differences in the picture information. The control main board of the display panel determines the area of the picture with the difference as the area of the picture to be updated, and transmits the display data of the area to the display panel, so that the display panel does not need to transmit the display data of the area of the picture with the difference to the display panel, and the display panel updates the area of the picture with the difference to a new display picture according to the obtained display data. The display panel updates the pictures in the picture areas with differences according to the received picture information, and the picture areas without differences only keep the original pictures, so that repeated data transmission of repeated pictures is reduced, only the picture data with differences are required to be transmitted, and the power consumption of data transmission is reduced.
In some embodiments, before comparing the first picture information and the second picture information, further comprising:
the display panel is divided into different display areas.
For example, fig. 2 is a schematic structural diagram of a display panel provided in the embodiment of the present disclosure, as shown in fig. 2, the display panel 210 is divided into a plurality of different display areas 220, the control main board of the display panel 210 compares the first frame information of the current frame with the second frame information of the previous frame in each display area 220, determines the display area 220 with the difference, and when detecting that the number of the display areas 220 with the difference is 20% of the total number of the display areas 220, considers that the display image of the current frame of the whole display panel 210 is different from the display image of the previous frame, and stops comparing the image information of the remaining display areas 220, the control main board directly transmits the display data of the whole display image to the display panel 210. Therefore, the embodiment of the present disclosure does not need to compare the picture information of each display area 220, and can directly update the whole display picture as long as the ratio of the number of display areas 220 with differences to the total number of display areas 220 reaches the set ratio threshold, thereby improving the detection efficiency.
It should be noted that fig. 2 is only an exemplary illustration of dividing the display panel 210 into a plurality of display areas 220, and the specific number of the display areas 220 is not limited herein.
The set ratio threshold of the number of display areas 220 having the difference to the total number of display areas 220 may be other than 20%, and the specific value may be set according to the actual situation, and is not limited herein.
In some embodiments, the above ratio threshold may not be set, but all display areas may be compared one by one, so as to accurately determine the display area with a difference, and accurately perform local display data transmission of the difference picture, so that panel power consumption is reduced, which is not limited herein.
Based on this, comparing the first screen information and the second screen information, determining a screen region where there is a difference may specifically include:
And comparing the first picture information with the second picture information according to the display area, and screening out a target display area with picture difference.
Specifically, the control main board of the display panel compares the first picture information of the current frame and the second picture information of the previous frame of each display area one by one according to the divided display areas, and screens out all the display areas with the difference of the picture information to determine the display areas as target display areas. The control main board of the display panel transmits the display data of the target display area to the display panel, the display panel does not need to transmit the display data of the non-target display area to the display panel, and the display panel updates the picture of the target display area into a new display picture according to the obtained display data. Therefore, the display data of the target display area only need to be transmitted to the display panel, the display panel does not need to transmit the display data of the non-target display area, the display panel updates the picture of the target display area according to the received picture information, and the non-target display area keeps the original picture, so that the repeated data transmission of repeated pictures is reduced, only the picture data with difference need to be transmitted, and the power consumption of the data transmission is reduced.
In some embodiments, with continued reference to fig. 2, the display areas 220 are arranged in an array along a first direction X and a second direction Y within the display panel 210; the first direction X intersects the second direction Y.
Illustratively, taking the orientation shown in FIG. 2 as an example, the first direction X may be a lateral direction (i.e., row direction) and the second direction Y may be a longitudinal direction (i.e., column direction). When the control main board of the display panel 210 detects the image information of each display area 220, the detection may be performed sequentially row by row and column by column along the arrangement direction of the display areas 220. For example, the control main board of the display panel 210 collects and compares the image information of the display area 220 at the upper left corner, collects and compares the image information of the next display area 220 along the first direction X after the comparison is completed, and continues to detect the next display area 220 after the detection of each display area 220 of the first row is completed until the detection of all the display areas 220 is completed, and the control main board of the display panel 210 transmits the display data corresponding to the target display area to the display panel 210 to control the display panel 210 to update the display screen.
For another example, the control main board of the display panel 210 collects and compares the image information of the display area 220 at the upper left corner, collects and compares the image information of the next display area 220 along the second direction Y after the comparison is completed, and continues to detect the next display area 220 after the detection of each display area 220 in the first row is completed until the detection of all the display areas 220 is completed, and the control main board of the display panel 210 transmits the display data corresponding to the target display area to the display panel 210 so as to control the display panel 210 to update the display screen. Thus, the embodiment of the present disclosure may enable the display panel 210 to be not limited by a mode or a region by sequentially detecting the image information of each display region 220 in the arrangement order, and each display region 220 may be detected.
The first direction X and the first direction Y may be other alignment directions besides the transverse direction and the longitudinal direction, for example, oblique, and the specific alignment direction depends on the actual situation and is not limited herein.
In some embodiments, the resolution of the display panel is n1×m1, and the subpixels of a single display area are set to n2×m2;
the number of display areas in the display panel is (n1×m1×3)/(n2×m2).
As an example, with continued reference to fig. 2, the display panel 210 is divided into a plurality of display areas 220, and the number of display areas 220 is calculated as follows, the sub-pixels of a single display area 220 may be set to, for example, 3×3 pixels, and the resolution of the display panel 210 may be, for example, 120×240, whereby the number of display areas 220 is (120×3×240)/(3×3) =9600, and the number of display areas 220 within the display panel 210 is calculated as 9600.
The sub-pixel array of the display area 220 may be set to be a product of multiples of 3, for example, 3×9,9×3, 9×9, or the like in practical applications, and is not limited thereto.
In other embodiments, the sub-pixel array of the display area 220 may be configured in other forms such as 2×2, 2×4, 4×2, 4×4, 8×8, and 16×16, which are not limited herein.
In some embodiments, with continued reference to fig. 2, the shape of the display area 220 includes a rectangle.
For example, for the display panel 210, the rectangle is more beneficial to the display data transmission of the display panel 210, and when the display data transmission is performed on the display panel 210, the transmission is generally performed in the smallest unit of a rectangular picture. Based on this, setting the display area 220 to be rectangular can facilitate display data transmission and display screen update while avoiding an area in the display panel 210 where there is a detection omission.
The shape of the display area 220 may be any other shape that can cover all the areas of the display panel 210 for display after being arranged in an array, and is not limited herein.
In some embodiments, with continued reference to fig. 2, the display control method further includes:
different display areas 220 are identified differently.
Illustratively, the identification of the display area 220 may be, for example, the 1 st row of the display area 220 has a differential identification of 0X11, 0X12, 0X13 … … X1n from 1 st, 2 nd, 3 rd to nth in order, and the 2 nd row of the display area 220 has a differential identification of 0X21, 0X22, 0X23 … … X2n from 1 st, 2 nd, 3 rd to nth in order, and up to the m th row of the display area 220 has a differential identification of 0Xm1, 0Xm2, 0Xm3 … … Xm from 1 st, 2 nd, 3 rd to nth in order. Thus, in the embodiment of the present disclosure, the differential identification is performed on each display area 220 of the display panel 210, so that when comparing the first frame information to be displayed in the current frame with the second frame information already displayed in the previous frame, the first frame information of the display area 220 with the same differential identification can be compared with the second frame information, so that the first frame information of the current frame in a certain display area is prevented from being compared with the second frame information of the current frame in another display area, thereby causing abnormal display.
It should be noted that the differential identifier of each display area 220 may be other identifier information that facilitates the identification of the control motherboard of the display panel 210, which is not limited herein.
Based on this, comparing the first screen information and the second screen information by the display area may specifically include:
and comparing the first picture information and the second picture information corresponding to the same display area according to the identification of different display areas.
Specifically, the control main board of the display panel compares the first picture information of the current frame of the display area with the second picture information of the previous frame of the display area with the same identification information, and after the picture information of all the display areas is compared, all the picture information with the difference display areas are screened out to determine the target display area. The control main board of the display panel transmits the display data of the target display area to the display panel, the display panel does not need to transmit the display data of the non-target display area to the display panel, and the display panel updates the picture of the target display area into a new display picture according to the obtained display data. Therefore, the display data of the target display area only need to be transmitted to the display panel, the display panel does not need to transmit the display data of the non-target display area, the display panel updates the picture of the target display area according to the received picture information, and the non-target display area keeps the original picture, so that the repeated data transmission of repeated pictures is reduced, only the picture data with difference need to be transmitted, and the power consumption of the data transmission is reduced.
In some embodiments, after determining the picture area where the difference exists, further comprising:
display data for the screen regions having the differences are transmitted to a storage unit, and the storage unit is communicatively connected to the display panel.
For example, when updating the screen area with the difference in the display panel, the storage unit may store the display data of the screen area with the difference, and when the control main board of the display panel detects the screen displayed on the display panel as the detected screen, the control main board may directly output the corresponding display data from the storage unit to the display panel, so as to complete updating the screen of the display panel. Therefore, the control main board of the display panel does not need to detect the same picture, and the detection efficiency of picture information is improved.
On the basis of the foregoing embodiments, the present disclosure embodiment further provides a display control device based on the same inventive concept.
Fig. 3 is a schematic structural diagram of a display control device according to an embodiment of the present disclosure, where, as shown in fig. 3, the display control device is configured to control a display screen of a display panel, and includes: the information obtaining module 310 is configured to obtain first frame information to be displayed in the current frame and second frame information already displayed in the previous frame. The information comparing module 320 is configured to compare the first frame information and the second frame information, and determine a frame area where a difference exists. The data transmission module 330 is configured to transmit display data for the picture area with the difference to the display panel, so as to control the display panel to update the display picture.
It can be understood that the display control device provided by the embodiment of the present disclosure can implement any step of the display control method provided in the foregoing embodiment, and has corresponding beneficial effects, which are not described herein.
The embodiment of the disclosure also provides a display panel, which performs display screen update control based on the steps of any display control method provided in the above embodiment.
It can be understood that the display panel provided by the embodiment of the present disclosure can implement any step of the display control method provided in the foregoing embodiment, and has corresponding beneficial effects, which are not described herein.
On the basis of the implementation manners, the embodiment of the disclosure also provides a display device.
Illustratively, fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present disclosure, as shown in fig. 4, the display device 410 includes a display panel 210, a memory and a controller (the memory and the controller are not shown); the memory stores executable programs or instructions; the display device 410 can implement the steps of any one of the display control methods provided in the foregoing embodiments through the memory and the controller, and has corresponding beneficial effects, which are not described herein.
Illustratively, the display device 410 includes, but is not limited to, a mobile phone, a tablet computer, a vehicle-mounted computer, a smart wearable device with a display function, and other structural components with a display function, which are not described herein in detail.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A display control method for controlling a display screen of a display panel, comprising:
Acquiring first picture information to be displayed in a current frame and second picture information displayed in a previous frame;
comparing the first picture information with the second picture information to determine a picture area with a difference;
and transmitting display data of the picture areas with the differences to the display panel to control the display panel to update a display picture.
2. The display control method according to claim 1, characterized by further comprising, before comparing the first screen information and the second screen information:
dividing the display panel into different display areas;
The comparing the first picture information and the second picture information to determine a picture area with a difference comprises:
And comparing the first picture information with the second picture information according to the display area, and screening out a target display area with picture difference.
3. The display control method according to claim 2, wherein the display areas are arranged in an array in a first direction and a second direction within the display panel;
the first direction intersects the second direction.
4. The display control method according to claim 2, wherein the resolution of the display panel is n1×m1, and the sub-pixels of the individual display areas are set to n2×m2;
The number of the display regions within the display panel is (n1×m1×3)/(n2×m2).
5. The display control method according to claim 2, wherein the shape of the display area includes a rectangle.
6. The display control method according to claim 2, characterized by further comprising:
Performing differential identification on different display areas;
said comparing said first picture information with said second picture information according to said display area comprises:
And comparing the first picture information and the second picture information corresponding to the same display area according to the identification of different display areas.
7. The display control method according to claim 1, wherein after the determination of the picture area where the difference exists, further comprising:
And sending the display data of the picture area with the difference to a storage component, wherein the storage component is in communication connection with the display panel.
8. A display control apparatus for controlling a display screen of a display panel, comprising:
The information acquisition module is used for acquiring first picture information to be displayed in the current frame and second picture information displayed in the previous frame;
The information comparison module is used for comparing the first picture information with the second picture information and determining a picture area with a difference;
And the data transmission module is used for transmitting the display data aiming at the picture areas with the differences to the display panel so as to control the display panel to update the display picture.
9. A display panel, characterized in that display screen update control is performed based on the steps of the display control method according to any one of claims 1 to 7.
10. A display device, comprising a display panel, a memory and a controller;
The memory stores executable programs or instructions;
The controller runs the program or instructions to implement the steps of the display control method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410195122.4A CN117953797A (en) | 2024-02-21 | 2024-02-21 | Display control method, display control device, display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410195122.4A CN117953797A (en) | 2024-02-21 | 2024-02-21 | Display control method, display control device, display panel and display device |
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| CN117953797A true CN117953797A (en) | 2024-04-30 |
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| CN202410195122.4A Pending CN117953797A (en) | 2024-02-21 | 2024-02-21 | Display control method, display control device, display panel and display device |
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