CN111782163A - Image display method and apparatus - Google Patents
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- CN111782163A CN111782163A CN202010569062.XA CN202010569062A CN111782163A CN 111782163 A CN111782163 A CN 111782163A CN 202010569062 A CN202010569062 A CN 202010569062A CN 111782163 A CN111782163 A CN 111782163A
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Abstract
The application provides an image display method and device. According to the method and the device, the time (namely the image refreshing starting time) for refreshing the sub-images corresponding to the display screens in the same image frame to be displayed in each display screen is determined for each different display screen in the spliced screen, and then each display screen is controlled to refresh the images based on the image refreshing starting time determined for each display screen in the spliced screen, so that the image frames displayed by the spliced screen can be visually synchronized.
Description
Technical Field
The present application relates to image processing technologies, and in particular, to an image display method and apparatus.
Background
The spliced screen is formed by splicing more than two display screens and is mostly applied to indoor. At present, the spliced screen can be generally used in monitoring, meetings, big data visualization platforms, education and other fields.
Taking an example of a tiled screen formed by tiling N × M (N, M is a natural number) display screens, when an image frame needs to be displayed on the tiled screen formed by tiling N × M display screens, the image frame is divided into N × M sub-images, and the N × M sub-images correspond to the N × M display screens one by one. And then, synchronously refreshing the sub-images corresponding to the display screens in the image frame by the display screens, and finally, completely displaying the image frame on the whole spliced screen.
In the spliced screen, the synchronous refreshing of images by each display screen often causes the displacement of image frames displayed between adjacent display screens, so that the image frames finally displayed by the spliced screen are not synchronous visually.
Disclosure of Invention
The application provides an image display method and equipment, which are used for realizing the visual synchronization of image frames displayed by a spliced screen.
The technical scheme provided by the application comprises the following steps:
the application provides an image display method, which is applied to electronic equipment and comprises the following steps:
determining corresponding image refreshing starting time for each display screen in the spliced screen; the image refreshing starting time corresponding to each display screen is the time for refreshing the sub-images in the corresponding image frame to be displayed on each display screen, wherein the image refreshing starting time corresponding to the upper and lower adjacent display screens is different by a first designated time, and the image refreshing starting time corresponding to the left and right adjacent display screens is different by a second designated time; the first designated time is determined according to a pre-obtained image frame valid data refresh time DeltaT 1, and the second designated time is determined according to a pre-obtained single-row valid pixel refresh time DeltaT 2;
and controlling each display screen to refresh the image according to the image refresh starting time corresponding to each display screen.
In one example, the controlling of refreshing the image of each display screen according to the image refreshing start time corresponding to each display screen includes:
and for each display screen, when the image refreshing starting time corresponding to the display screen is reached, outputting the sub-image corresponding to the display screen in the image frame to be displayed to the display screen, and refreshing the sub-image by the display screen according to a set screen refreshing strategy.
In one example, the controlling of refreshing the image of each display screen according to the image refreshing start time corresponding to each display screen includes:
outputting the image refreshing starting time corresponding to each display screen, and waiting until the image refreshing starting time is reached when each display screen receives the corresponding sub-image in the image frame to be displayed and the corresponding image refreshing starting time is not reached currently, refreshing the sub-image according to the set screen refreshing strategy.
In one example, the image frame valid data refresh time Δ T1 and the single row valid pixel refresh time Δ T2 are determined by:
determining corresponding image frame refreshing time according to the configured display resolution and display refreshing rate for the spliced screen;
determining the image frame effective data refreshing time delta T1 according to the image frame refreshing time and the occupation proportion of the image frame effective data in the image frame total data;
and determining the image frame effective data refreshing time delta T2 according to the image frame refreshing time and the occupation proportion of the single-row effective pixels in the total image frame data.
The application provides an image display method, which is applied to a display screen, wherein the display screen is spliced with at least one other display screen to form a spliced screen, and the method comprises the following steps:
receiving image refreshing starting time which is determined by the electronic equipment for the display screen and is used for refreshing sub-images corresponding to the display screen in an image frame to be displayed;
when the subimages are received, checking whether the image refreshing starting time is reached currently, if not, waiting until the image refreshing starting time is reached, and refreshing the subimages according to a set screen refreshing strategy; and if so, refreshing the sub-image according to a set screen refreshing strategy.
The application provides an image display device, the device is applied to electronic equipment, includes:
the determining unit is used for determining corresponding image refreshing starting time for each display screen in the spliced screen; the method comprises the steps that time for refreshing sub-images in the same image frame to be displayed is obtained by each display screen, wherein image refreshing starting time corresponding to the upper and lower adjacent display screens is different by a first designated time, and image refreshing starting time corresponding to the left and right adjacent display screens is different by a second designated time; the first designated time is determined according to a pre-obtained image frame valid data refresh time DeltaT 1, and the second designated time is determined according to a pre-obtained single-row valid pixel refresh time DeltaT 2;
and the control unit is used for controlling each display screen to refresh the image according to the image refresh starting time corresponding to each display screen.
In one example, the controlling unit controls each display screen to refresh the image according to the image refresh start time corresponding to each display screen includes:
for each display screen, when the image refreshing starting time corresponding to the display screen is reached, outputting a sub-image corresponding to the display screen in the image frame to be displayed to the display screen, and refreshing the sub-image by the display screen according to a set screen refreshing strategy; alternatively, the first and second electrodes may be,
outputting the image refreshing starting time corresponding to each display screen, and waiting until the image refreshing starting time is reached when each display screen receives the corresponding sub-image in the image frame to be displayed and the corresponding image refreshing starting time is not reached currently, refreshing the sub-image according to the set screen refreshing strategy.
In one example, the image frame valid data refresh time Δ T1 and the single row valid pixel refresh time Δ T2 are determined by:
determining corresponding image frame refreshing time according to the configured display resolution and display refreshing rate for the spliced screen;
determining the image frame effective data refreshing time delta T1 according to the image frame refreshing time and the occupation proportion of the image frame effective data in the image frame total data;
and determining the image frame effective data refreshing time delta T2 according to the image frame refreshing time and the occupation proportion of the single-row effective pixels in the total image frame data.
The application provides an image display device, the device is applied to the display screen, the display screen forms the concatenation screen with at least one other display screen concatenation, the device includes:
the receiving unit is used for receiving image refreshing starting time which is determined by the electronic equipment for the display screen and is used for refreshing the sub-image corresponding to the display screen in the image frame to be displayed;
the refreshing unit is used for checking whether the image refreshing starting time is reached or not at present when the subimage is received, if not, waiting until the image refreshing starting time is reached, and refreshing the subimage according to a set screen refreshing strategy; and if so, refreshing the sub-image according to a set screen refreshing strategy.
The application provides an electronic device, which includes: a processor and a machine-readable storage medium;
the machine-readable storage medium stores machine-executable instructions executable by the processor;
the processor is configured to execute machine executable instructions to implement the methods disclosed above.
According to the technical scheme, the time (namely the image refreshing starting time) for refreshing the sub-images corresponding to the display screens in the same image frame to be displayed in the display screens is determined for the different display screens in the spliced screen, and then the display screens are controlled to refresh the images based on the image refreshing starting time determined for the display screens in the spliced screen, so that the image frames displayed by the spliced screen can be visually synchronized;
further, in this embodiment, the image refresh start times of the different display screens in the mosaic screen for refreshing the sub-images corresponding to the display screens in the same image frame to be displayed are different, which is compared with the case that the different display screens in the mosaic screen synchronously refresh the images according to the same refresh time, so that the image frames displayed by the mosaic screen are prevented from being misplaced, and the image frames displayed by the mosaic screen are visually synchronized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram of a tiled screen according to an embodiment of the present application;
FIG. 2 is a flow chart of a method provided by an embodiment of the present application;
FIG. 3 is a schematic diagram of an image frame provided by an embodiment of the present application;
FIG. 4 is a schematic view of a first embodiment provided herein;
FIG. 5 is a schematic view of a second embodiment provided herein;
FIG. 6 is a schematic view of a third embodiment provided herein;
FIG. 7 is a flow chart of another method provided by an embodiment of the present application;
FIG. 8 is a block diagram of an apparatus according to an embodiment of the present disclosure;
FIG. 9 is a block diagram of another apparatus according to an embodiment of the present disclosure;
fig. 10 is a hardware configuration diagram of an apparatus according to an embodiment of the present application.
Detailed Description
In order to make the method provided by the present application easier to understand, the method provided by the present application is described in detail below with reference to the accompanying drawings and examples:
the visual asynchrony of the display images of the spliced screen is described firstly as follows:
taking an example that the tiled screen 100 shown in fig. 1 is formed by tiling a display screen 101 and a display screen 102 in an up-down order, if the display screen 101 and the display screen 102 synchronously refresh sub-images in a corresponding nth frame image, where the display screen 101 refreshes a sub-image 11 in the nth frame image, the display screen 102 refreshes a sub-image 12 in the nth frame image, and the sub-image 11 and the sub-image 12 are combined into the nth frame image, then:
when a next frame image (marked as an N +1 th frame image) of the nth frame image needs to be displayed on the mosaic screen 100, the display screen 101 and the display screen 102 synchronously receive the sub-images of the corresponding N +1 th frame image and synchronously refresh the received sub-images. Here, the sub-image of the N +1 th frame image received by the display screen 101 is the sub-image 13 of the N +1 th frame image, the sub-image of the N +1 th frame image received by the display screen 102 is the sub-image 14 of the N +1 th frame image, and the sub-image 13 and the sub-image 14 are combined into the N +1 th frame image.
Taking the example that the display screen 101 and the display screen 102 refresh the images from top to bottom and from left to right, when the display screen 101 and the display screen 102 refresh the images from top to bottom and from left to right, the image frame misalignment at the joint between the display screen 101 and the display screen 102 shown in fig. 1 occurs, that is: the display screen 101 displays the sub-image 11 in the nth frame image in the area near the splice with the display screen 102, and the display screen 102 displays the sub-image 14 in the (N + 1) th frame image in the area near the splice with the display screen 101, namely, the display screen 101 and the display screen 102 have the displayed image frames dislocated. And this misalignment causes the image frames displayed by the tiled screen 100 to be visually unsynchronized.
In order to achieve visual synchronization of image frames displayed on a tiled screen, an embodiment of the present application provides a method as shown in fig. 2:
referring to fig. 2, fig. 2 is a flowchart of a method provided by an embodiment of the present application. The flow is applied to the electronic equipment. As an example, the electronic device may be a screen control device for controlling each display screen of the tiled display screen.
In an example, the screen control device may be a centralized device, may be independent from each display screen in the tiled display screen, or may be disposed on one of the display screens in the tiled display screen.
In another example, the screen control device may also be a distributed device, which may be distributed in each display screen in the tiled display screen, or may be distributed in other devices, and this embodiment is not particularly limited.
As shown in fig. 2, the process may include the following steps:
Here, the image refresh start time corresponding to each display screen refers to a time for each display screen to refresh the sub-image corresponding to each display screen in the same image frame to be displayed. As an embodiment, in this step 201, for the same image frame to be displayed, the image refresh start times determined for the different display screens for refreshing the sub-images corresponding to the different display screens in the same image frame to be displayed are different, but the final purpose is to achieve visual synchronization when the image frame to be displayed is displayed by the mosaic screen. The following description will exemplify how to determine the corresponding image refresh start time for each display screen in the mosaic screen.
Optionally, in this step 202, there are many embodiments for controlling each display screen to refresh the image according to the image refresh start time corresponding to each display screen, for example:
in an example, the step 202 of controlling each display screen to refresh the image according to the image refresh start time corresponding to each display screen may include: and for each display screen, when the image refreshing starting time corresponding to the display screen is reached, outputting the sub-image corresponding to the display screen in the image frame to be displayed to the display screen, and refreshing the sub-image by the display screen according to a set screen refreshing strategy.
In another example, the step 202 of controlling each display screen to refresh the image according to the image refresh start time corresponding to each display screen may include: outputting the image refreshing starting time corresponding to each display screen, and waiting until the image refreshing starting time is reached when each display screen receives the corresponding sub-image in the image frame to be displayed and the corresponding image refreshing starting time is not reached currently, refreshing the sub-image according to the set screen refreshing strategy. Of course, if the current time reaches the corresponding image refresh start time (specifically, the start time for refreshing the sub-image), the sub-image is refreshed directly according to the set screen refresh policy.
It should be noted that, the above description is only an example of how the step 202 controls each display screen to refresh the image according to the image refresh start time corresponding to each display screen, and is not limited. In addition, in the above description, the example of refreshing the sub-images according to the set screen refresh policy may be to scan the sub-images in order from top to bottom and from left to right.
Thus, the flow shown in fig. 2 is completed.
Through the process shown in fig. 2, in this embodiment, based on the above purpose of implementing visual synchronization when the mosaic screen displays image frames, time (i.e., image refresh start time) for refreshing sub-images corresponding to each display screen in the same image frame to be displayed on each display screen is determined for each different display screen in the mosaic screen, and then each display screen is controlled to refresh images based on the image refresh start time determined for each display screen in the mosaic screen, so that the image frames displayed on the mosaic screen can be visually synchronized;
further, in this embodiment, the image refresh start times of the different display screens in the mosaic screen for refreshing the sub-images corresponding to the display screens in the same image frame to be displayed are different, which is compared with the case that the different display screens in the mosaic screen synchronously refresh the images according to the same refresh time, so that the image frames displayed by the mosaic screen are prevented from being misplaced, and the image frames displayed by the mosaic screen are visually synchronized.
The following describes determining the image refresh start time corresponding to the same image frame for each display screen in the mosaic screen in step 201:
before describing step 201, a brief description of one image frame is given:
one image frame mainly includes the following 3 parts of data as shown in fig. 3: image frame valid data, frame blanking region, frame foreshoulder region. For the image frame effective data, each pixel row may include: a single line blanking region, a single line active data region (also called a single line of active pixels), a single line leading shoulder region. The single-line blanking area, the single-line front shoulder area similar to the frame blanking area, and the frame front shoulder area are not described again. The refresh time of the image frame valid data can be referred to as an image frame valid data refresh time (Δ T1 for short). The refresh time of a single row of active pixels may be referred to as a single row active pixel refresh time (Δ T2 for short). The frame blanking area refresh time can be referred to as a frame blanking area refresh time (Δ T3 for short). The refresh time of the frame front shoulder region can be referred to as a frame front shoulder region refresh time (Δ T4 for short).
In one embodiment, Δ T1, Δ T2, Δ T3, Δ T4 may be determined in accordance with a display resolution and display refresh rate that have been configured for the tiled screen. Optionally, the configured display resolution and display refresh rate for the tiled display screen may be configured on an output port of the electronic device connected to the tiled display screen.
Optionally, if the configured display resolution and display refresh rate of the mosaic screen are obtained (for example, the display resolution is 1280 × 720, and the display refresh rate is 50HZ), the corresponding timing parameters may be determined according to the corresponding relationship between the set display resolution and display refresh rate and the image display parameters, where the timing parameters include: image frame refresh time, image frame data protocol format. The occupancy of the image frame valid data in the entire image frame data may be determined based on the image frame data protocol format, and the Δ T1 may be derived based on the occupancy and the image frame refresh time (e.g., Δ T1 is the product of the occupancy of the image frame valid data in the entire image frame data and the image frame refresh time). Similarly, the occupancy of a single row of valid pixels in the entire image frame data may be determined based on the image frame data protocol format, and the Δ T2 may be derived based on the occupancy and the image frame refresh time (e.g., Δ T2 is the product of the occupancy of a single row of valid pixels in the entire image frame data and the image frame refresh time). The occupancy of the frame blanking area in the entire image frame data may be determined based on the image frame data protocol format, and based on the occupancy and the image frame refresh time, the Δ T3 may be derived (e.g., Δ T3 is the product of the occupancy of the frame blanking area in the entire image frame data and the image frame refresh time). And determining the occupancy of the shoulder region in the front of the frame in the whole image frame data based on the image frame data protocol format, and obtaining the delta T4 based on the occupancy and the image frame refresh time (for example, the delta T4 is the product of the occupancy of the shoulder region in the front of the frame in the whole image frame data and the image frame refresh time).
Alternatively, in one example, the above-mentioned correspondence between the set display resolution and display refresh rate and the image display parameters may refer to a display screen Timing standard (Monitor Timing standard) defined by the VESA standard. In another example, the corresponding relationship between the set display resolution and display refresh rate and the image display parameters may also be set according to actual requirements, and are not described herein again.
Based on Δ T1, Δ T3, and Δ T4, in one example, the image frame refresh time (Δ T0) can be expressed by equation 1:
Δ T0 ═ Δ T1+ Δ T3+ Δ T4 (formula 1)
For example, taking the display resolution of 1280 × 720 and the display refresh rate of 50HZ as an example, the image frame refresh time may be 20 ms.
Based on Δ T1, Δ T2, Δ T3, Δ T4 described above, then:
in an example, for the vertically adjacent display screens in the mosaic screen, in order to avoid the image frame displayed by the mosaic screen shown in fig. 1 from being misaligned, the time (i.e., the image refresh start time) for refreshing the sub-images corresponding to the display screens in the same image frame to be displayed by the vertically adjacent display screens in the mosaic screen may be set to be different by a first specified time. The first designated time may be determined according to the Δ T1, for example, the first designated time is the Δ T1. In an example, the difference between the time when the vertically adjacent display screens refresh the sub-images corresponding to the display screens in the same image frame to be displayed (i.e. the image refresh start time) may be a first specified time: if the display screens scan from top to bottom, for the same image frame to be displayed, the time for the lower display screen to refresh the corresponding sub-image in the image frame to be displayed (i.e. the image refresh start time) is delayed by the first specified time compared with the time for the upper display screen to refresh the corresponding sub-image in the image frame to be displayed (i.e. the image refresh start time); on the contrary, if the display screens scan from bottom to top, for the same image frame to be displayed, the time for the upper display screen to refresh the corresponding sub-image in the image frame to be displayed (i.e. the image refresh start time) is delayed by the first specified time compared with the time for the lower display screen to refresh the corresponding sub-image in the image frame to be displayed (i.e. the image refresh start time).
In another example, for the left and right adjacent display screens in the mosaic screen, in order to avoid the image frame displayed by the mosaic screen similar to that shown in fig. 1 from being misaligned, the time (i.e., the image refresh start time) for refreshing the sub-image corresponding to each display screen in the same image frame to be displayed by each display screen adjacent to the left and right display screens in the mosaic screen may be set to be different by a second designated time. The second designated time is determined according to the Δ T2, for example, the second designated time is the Δ T2. In one example, the difference between the time when the left and right adjacent display screens refresh the sub-images corresponding to the display screens in the same image frame to be displayed (i.e. the image refresh start time) by the second designated time may be: if the display screens scan from left to right, for the same image frame to be displayed, the time for refreshing the corresponding sub-image in the image frame to be displayed by the display screen on the right side (i.e. the image refresh start time) is delayed by the second designated time compared with the time for refreshing the corresponding sub-image in the image frame to be displayed by the display screen on the left side (i.e. the image refresh start time); on the contrary, if the display screens scan from right to left, for the same image frame to be displayed, the time (i.e., the image refresh start time) for the display screen on the left to refresh the corresponding sub-image in the image frame to be displayed is delayed by the second designated time compared with the time (i.e., the image refresh start time) for the display screen on the right to refresh the corresponding sub-image in the image frame to be displayed.
Taking the display screens to scan from top to bottom and from left to right as an example, how to determine the corresponding image refresh start time for each display screen in the mosaic screen is described as an example:
taking the spliced screen 403 shown in fig. 4 as an example, in fig. 4, the spliced screen 403 is formed by splicing two horizontally adjacent display screens (i.e., the display screen 401 and the display screen 402). In order to avoid the image frames displayed by the display screens 401 and 402 at the joint from being misaligned (for example, the image displayed by the display screen 401 at the joint is a sub-image in the nth frame image, and the image displayed by the display screen 402 at the joint is a sub-image in the N +1 th frame image), based on the above description, it may be determined that the difference between the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 401a) corresponding to the display screen 401 in the image frame to be displayed in the display screen 401 and the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 402a) corresponding to the display screen 402 in the image frame to be displayed in the display screen 402 is Δ T2.
Optionally, the difference between the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 401a) in the image frame to be displayed corresponding to the display screen 401 in the display screen 401 and the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 402a) in the image frame to be displayed corresponding to the display screen 402 in the display screen 402 may be Δ T2:
the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 401a) in the image frame to be displayed in the display screen 401, which corresponds to the display screen 402, is delayed by Δ T2 mentioned above compared to the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 402a) in the image frame to be displayed in the display screen 402, which corresponds to the display screen 402.
Based on this, in fig. 4, in a normal case, for the same image frame, the output time (i.e., the image refresh start time) when the output port 400_2 of the touch device 400 outputs the sub-image (denoted as the image 402a) corresponding to the display screen 402 in the image frame is delayed by Δ T2 as described above compared with the output time (i.e., the image refresh start time) when the output port 400_1 of the touch device 400 outputs the sub-image (denoted as the image 401a) corresponding to the display screen 401 in the image frame. For example, the time for refreshing the sub-image (denoted as image 401a) corresponding to the display screen 401 in the image frame in the display screen 401 may be: starting at Δ T3 and ending at Δ T3+ Δ T1. The time for refreshing the sub-image (denoted as image 402a) of the image frame corresponding to the display screen 402 in the display screen 402 may be: starting at Δ T3+ Δ T2 and ending at Δ T3+ Δ T2+ Δ T1. Through the above description, the image frames displayed on the display screens 401 and 402 at the spliced position can be prevented from being dislocated, and the image frames displayed on the spliced screen can be visually synchronized.
Taking the spliced screen shown in fig. 5 as an example, in fig. 5, the spliced screen 503 is formed by splicing two vertically adjacent display screens (i.e., the display screen 501 and the display screen 502). In order to avoid the image frames displayed by the display screens 501 and 502 at the joint from being misaligned (for example, the image displayed by the display screen 501 at the joint is a sub-image in the nth frame image, and the image displayed by the display screen 502 at the joint is a sub-image in the N +1 th frame image), based on the above description, it may be determined that the difference between the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 501a) corresponding to the display screen 501 in the image frame to be displayed in the display screen 501 and the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 502a) corresponding to the display screen 502 in the image frame to be displayed in the display screen 502 is Δ T1.
Optionally, the difference between the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 501a) in the image frame to be displayed corresponding to the display screen 501 in the display screen 501 and the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 502a) in the image frame to be displayed corresponding to the display screen 502 in the display screen 502 (Δ T1) may be specifically:
the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 501a) in the image frame to be displayed corresponding to the display screen 502 in the display screen 502 is delayed by Δ T1 mentioned above compared with the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 501a) in the image frame to be displayed corresponding to the display screen 501 in the display screen 501.
Based on this, in fig. 5, in a normal case, for the same image frame, the output time (i.e., the image refresh start time) when the output port 500_2 of the touch device 500 outputs the sub-image (denoted as the image 502a) corresponding to the display screen 502 in the image frame is delayed by Δ T1 as described above compared with the output time (i.e., the image refresh start time) when the output port 500_1 of the touch device 500 outputs the sub-image (denoted as the image 501a) corresponding to the display screen 501 in the image frame. For example, the time for refreshing the sub-image (denoted as image 501a) corresponding to the display screen 501 in the image frame in the display screen 501 may be: starting at Δ T3 and ending at Δ T3+ Δ T1. The time for refreshing the sub-image (denoted as image 502a) in the image frame corresponding to the display screen 502 in the display screen 502 may be: starting at Δ T3+ Δ T1 and ending at Δ T3+2 Δ T1. Through the above description, the image frames displayed on the display screen 501 and the display screen 502 at the spliced position can be prevented from being dislocated, and the image frames displayed on the spliced screen can be visually synchronized.
Taking the spliced screen 610 shown in fig. 6 as an example, in fig. 6, the spliced screen 610 is composed of 3 × 3 display screens. To avoid the misalignment of the image frames displayed at the joint by the display screens in the joint screen 610, based on the above description, the following processes may be performed for the same image frame to be displayed:
it is determined that the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 601a) in the image frame to be displayed in the display screen 601 and the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 602a) in the image frame to be displayed in the display screen 602 and corresponding to the display screen 602 differ by Δ T2 described above. For example, for the same image frame, the output time (i.e., the image refresh start time) when the output port 600_2 of the touch device 600 outputs the sub-image (denoted as the image 602a) corresponding to the display screen 602 in the image frame is delayed by Δ T2 from the output time (i.e., the image refresh start time) when the output port 600_1 of the touch device 600 outputs the sub-image (denoted as the image 601a) corresponding to the display screen 601 in the image frame.
For the convenience of intuitive understanding of the present embodiment, the following image refresh start times of the display screens are all referred to the image refresh start time of the display screen 601:
with respect to the display screen 603, it is determined that the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 601a) in the image frame to be displayed corresponding to the display screen 603 in the display screen 603 is delayed by 2 Δ T2 from the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 601a) in the image frame to be displayed corresponding to the display screen 601 in the display screen 601.
With respect to the display screen 604, it is determined that a time (i.e., an image refresh start time) for refreshing a sub-image (denoted as an image 601a) in the image frame to be displayed corresponding to the display screen 604 in the display screen 604 is delayed by Δ T1 from a time (i.e., an image refresh start time) for refreshing the sub-image (denoted as an image 604a) in the image frame to be displayed corresponding to the display screen 601 in the display screen 601.
With respect to the display screen 605, it is determined that the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 601a) in the image frame to be displayed corresponding to the display screen 605 in the display screen 605 is delayed by Δ T1+ Δ T2 compared to the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 601a) in the image frame to be displayed corresponding to the display screen 601 in the display screen 601.
For the display screen 606, it is determined that a time (i.e., an image refresh start time) for refreshing the sub-image (denoted as the image 601a) corresponding to the display screen 601 in the image frame to be displayed in the display screen 601 is delayed by Δ T1+2 Δ T2 compared to a time (i.e., an image refresh start time) for refreshing the sub-image (denoted as the image 606a) corresponding to the display screen 606 in the image frame to be displayed in the display screen 606.
With respect to the display screen 607, it is determined that the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 601a) in the image frame to be displayed corresponding to the display screen 606 in the display screen 607 is delayed by 2 Δ T1 from the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 601a) in the image frame to be displayed corresponding to the display screen 601 in the display screen 601.
With respect to the display screen 608, it is determined that the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 608a) in the image frame to be displayed corresponding to the display screen 608 in the display screen 608 is delayed by 2 Δ T1+ Δ T2 compared to the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 601a) in the image frame to be displayed corresponding to the display screen 601 in the display screen 601.
For the display screen 609, it is determined that the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 601a) in the image frame to be displayed corresponding to the display screen 609 in the display screen 609 is delayed by 2 Δ T1+2 Δ T2 compared with the time (i.e., the image refresh start time) for refreshing the sub-image (denoted as the image 609a) in the image frame to be displayed corresponding to the display screen 609 in the display screen 601.
Fig. 6 is only an example that the image refresh start time of each display screen is referred to the image refresh start time of the display screen 601, and the embodiment is not limited thereto, and the image refresh start time of any display screen may be specified according to actual requirements as a reference under the condition that the requirement for determining the image refresh start time corresponding to each display screen is satisfied.
The method provided by the present application is described above in terms of standing on an electronic device such as a touch device, and the method provided by the present application is described below in terms of standing on a display screen:
referring to fig. 7, fig. 7 is a flowchart of a method provided by an embodiment of the present application. As shown in fig. 7, the process may include the following steps:
As can be seen from steps 701 and 702, in an example, an image refresh start time for refreshing a sub-image corresponding to a display screen in an image frame to be displayed may also be determined in advance for the display screen. Then, when the display screen receives the sub-image subsequently, the sub-image is not scanned immediately, but whether the image refreshing starting time is reached currently is checked, if not, the sub-image is waited for until the image refreshing starting time is reached, and the sub-image is refreshed according to a set screen refreshing strategy; and if so, refreshing the sub-images according to a set screen refreshing strategy so as to realize visual synchronization of the image frames displayed at the spliced positions between the sub-images and other display screens.
In an example, the step 702 of refreshing the sub-images according to the set screen refresh policy may be to scan the sub-images from top to bottom and from left to right.
The flow shown in fig. 7 is completed.
The following describes the apparatus provided in the present application:
referring to fig. 8, fig. 8 is a diagram illustrating the structure of the apparatus according to the present invention. The apparatus applied to the electronic device may include, corresponding to the above-mentioned flow shown in fig. 2:
the determining unit is used for determining corresponding image refreshing starting time for each display screen in the spliced screen; the image refreshing starting time corresponding to each display screen is the time for refreshing the sub-images corresponding to each display screen in the same image frame to be displayed on each display screen, wherein the image refreshing starting time corresponding to the upper and lower adjacent display screens is different by a first designated time, and the image refreshing starting time corresponding to the left and right adjacent display screens is different by a second designated time; the first designated time is determined according to a pre-obtained image frame valid data refresh time DeltaT 1, and the second designated time is determined according to a pre-obtained single-row valid pixel refresh time DeltaT 2;
and the control unit is used for controlling each display screen to refresh the image according to the image refresh starting time corresponding to each display screen.
Optionally, the controlling unit controls each display screen to refresh the image according to the image refresh start time corresponding to each display screen includes:
for each display screen, when the image refreshing starting time corresponding to the display screen is reached, outputting a sub-image corresponding to the display screen in the image frame to be displayed to the display screen, and refreshing the sub-image by the display screen according to a set screen refreshing strategy; alternatively, the first and second electrodes may be,
outputting the image refreshing starting time corresponding to each display screen, and waiting until the image refreshing starting time is reached when each display screen receives the corresponding sub-image in the image frame to be displayed and the corresponding image refreshing starting time is not reached currently, refreshing the sub-image according to the set screen refreshing strategy.
Optionally, the image frame valid data refresh time Δ T1 and the single row valid pixel refresh time Δ T2 are determined by:
determining corresponding image frame refreshing time according to the configured display resolution and display refreshing rate for the spliced screen;
determining the image frame effective data refreshing time delta T1 according to the image frame refreshing time and the occupation proportion of the image frame effective data in the image frame total data;
and determining the image frame effective data refreshing time delta T2 according to the image frame refreshing time and the occupation proportion of the single-row effective pixels in the total image frame data.
Thus, the description of the structure of the apparatus shown in fig. 8 is completed.
Referring to fig. 9, fig. 9 is a block diagram of another apparatus provided in the present application. The device is applied to a display screen, corresponding to the method shown in fig. 7 described above. The display screen is spliced with at least one other display screen to form a spliced screen. As shown in fig. 9, the apparatus may include:
the receiving unit is used for receiving image refreshing starting time which is determined by the electronic equipment for the display screen and is used for refreshing the sub-image corresponding to the display screen in the image frame to be displayed;
the refreshing unit is used for checking whether the image refreshing starting time is reached or not at present when the subimage is received, if not, waiting until the image refreshing starting time is reached, and refreshing the subimage according to a set screen refreshing strategy; and if so, refreshing the sub-image according to a set screen refreshing strategy.
Thus, the apparatus configuration diagram shown in fig. 9 is completed.
Correspondingly, the application also provides a hardware structure of the device shown in fig. 8 or fig. 9. Referring to fig. 10, the hardware structure may include: a processor and a machine-readable storage medium having stored thereon machine-executable instructions executable by the processor; the processor is configured to execute machine-executable instructions to implement the methods disclosed in the above examples of the present application.
Based on the same application concept as the method, embodiments of the present application further provide a machine-readable storage medium, where several computer instructions are stored, and when the computer instructions are executed by a processor, the method disclosed in the above example of the present application can be implemented.
The machine-readable storage medium may be, for example, any electronic, magnetic, optical, or other physical storage device that can contain or store information such as executable instructions, data, and the like. For example, the machine-readable storage medium may be: a RAM (random Access Memory), a volatile Memory, a non-volatile Memory, a flash Memory, a storage drive (e.g., a hard drive), a solid state drive, any type of storage disk (e.g., an optical disk, a dvd, etc.), or similar storage medium, or a combination thereof.
The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. A typical implementation device is a computer, which may take the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email messaging device, game console, tablet computer, wearable device, or a combination of any of these devices.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Furthermore, these computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. An image display method applied to an electronic device, comprising:
determining corresponding image refreshing starting time for each display screen in the spliced screen; the image refreshing starting time corresponding to each display screen refers to the time for each display screen to refresh the sub-image in the corresponding image frame to be displayed, wherein the image refreshing starting time corresponding to the upper and lower adjacent display screens is different by a first designated time, and the image refreshing starting time corresponding to the left and right adjacent display screens is different by a second designated time; the first designated time is determined according to a pre-obtained image frame valid data refresh time DeltaT 1, and the second designated time is determined according to a pre-obtained single-row valid pixel refresh time DeltaT 2;
and controlling each display screen to refresh the image according to the image refresh starting time corresponding to each display screen.
2. The method of claim 1, wherein the controlling each display screen to refresh the image according to the image refresh start time corresponding to each display screen comprises:
and for each display screen, when the image refreshing starting time corresponding to the display screen is reached, outputting the sub-image corresponding to the display screen in the image frame to be displayed to the display screen, and refreshing the sub-image by the display screen according to a set screen refreshing strategy.
3. The method of claim 1, wherein the controlling each display screen to refresh the image according to the image refresh start time corresponding to each display screen comprises:
outputting the image refreshing starting time corresponding to each display screen, and waiting until the image refreshing starting time is reached when each display screen receives the corresponding sub-image in the image frame to be displayed and the corresponding image refreshing starting time is not reached currently, refreshing the sub-image according to the set screen refreshing strategy.
4. The method of claim 1 wherein the image frame active data refresh time Δ T1 and the single row active pixel refresh time Δ T2 are determined by:
determining corresponding image frame refreshing time according to the configured display resolution and display refreshing rate for the spliced screen;
determining the image frame effective data refreshing time delta T1 according to the image frame refreshing time and the occupation proportion of the image frame effective data in the image frame total data;
and determining the image frame effective data refreshing time delta T2 according to the image frame refreshing time and the occupation proportion of the single-row effective pixels in the total image frame data.
5. An image display method is applied to a display screen, the display screen is spliced with at least one other display screen to form a spliced screen, and the method comprises the following steps:
receiving image refreshing starting time which is determined by the electronic equipment for the display screen and is used for refreshing sub-images corresponding to the display screen in an image frame to be displayed;
when the subimages are received, checking whether the image refreshing starting time is reached currently, if not, waiting until the image refreshing starting time is reached, and refreshing the subimages according to a set screen refreshing strategy; and if so, refreshing the sub-image according to a set screen refreshing strategy.
6. An image display apparatus, applied to an electronic device, comprising:
the determining unit is used for determining corresponding image refreshing starting time for each display screen in the spliced screen; the image refreshing starting time corresponding to each display screen refers to the time for each display screen to refresh the sub-image corresponding to the same image frame to be displayed, wherein the image refreshing starting time corresponding to the upper and lower adjacent display screens is different by a first designated time, and the image refreshing starting time corresponding to the left and right adjacent display screens is different by a second designated time; the first designated time is determined according to a pre-obtained image frame valid data refresh time DeltaT 1, and the second designated time is determined according to a pre-obtained single-row valid pixel refresh time DeltaT 2;
and the control unit is used for controlling each display screen to refresh the image according to the image refresh starting time corresponding to each display screen.
7. The apparatus of claim 6, wherein the controlling unit controls each display screen to refresh the image according to the image refresh start time corresponding to each display screen comprises:
for each display screen, when the image refreshing starting time corresponding to the display screen is reached, outputting a sub-image corresponding to the display screen in the image frame to be displayed to the display screen, and refreshing the sub-image by the display screen according to a set screen refreshing strategy; alternatively, the first and second electrodes may be,
outputting the image refreshing starting time corresponding to each display screen, and waiting until the image refreshing starting time is reached when each display screen receives the corresponding sub-image in the image frame to be displayed and the corresponding image refreshing starting time is not reached currently, refreshing the sub-image according to the set screen refreshing strategy.
8. The apparatus of claim 6, wherein the image frame active data refresh time Δ T1 and the single row active pixel refresh time Δ T2 are determined by:
determining corresponding image frame refreshing time according to the configured display resolution and display refreshing rate for the spliced screen;
determining the image frame effective data refreshing time delta T1 according to the image frame refreshing time and the occupation proportion of the image frame effective data in the image frame total data;
and determining the image frame effective data refreshing time delta T2 according to the image frame refreshing time and the occupation proportion of the single-row effective pixels in the total image frame data.
9. An image display device, characterized in that the device is applied to a display screen, the display screen is spliced with at least one other display screen to form a spliced screen, the device comprises:
the receiving unit is used for receiving image refreshing starting time which is determined by the electronic equipment for the display screen and is used for refreshing the sub-image corresponding to the display screen in the image frame to be displayed;
the refreshing unit is used for checking whether the image refreshing starting time is reached or not at present when the subimage is received, if not, waiting until the image refreshing starting time is reached, and refreshing the subimage according to a set screen refreshing strategy; and if so, refreshing the sub-image according to a set screen refreshing strategy.
10. An electronic device, comprising: a processor and a machine-readable storage medium;
the machine-readable storage medium stores machine-executable instructions executable by the processor;
the processor is configured to execute machine executable instructions to implement the method steps of any of claims 1-4 or 5.
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