Display processing method, device, storage medium, processor and module control board

Abstract

This invention discloses a display processing method, apparatus, storage medium, processor, and module control board. The display processing method includes: receiving display control information, including frame locking control information; determining whether the instruction corresponding to the frame locking control information is a frame lock; and, if the instruction corresponding to the frame locking control information is a frame lock, controlling the display module to continuously display a target image, where the target image is the frame that appeared before the display control information was received. This invention solves the problem in existing video display devices where poor display quality is easily caused by video signal fluctuations or momentary loss.

Description

Technical Field

[0001] This invention relates to the field of video display processing, and more specifically, to a display processing method, apparatus, storage medium, processor, and module control board. Background Technology

[0002] During video display, the video signal is prone to instability or even loss due to external interference. Even if the backup signal is connected immediately, there will be brief display abnormalities during signal switching, such as black screen or screen distortion.

[0003] Therefore, existing video display devices are prone to poor display quality due to video signal fluctuations or momentary loss. Currently, no effective solution has been proposed to address this problem.

[0004] The information disclosed in the background section is only intended to enhance the understanding of the background art described herein. Therefore, the background art may contain information that would not be considered part of the prior art by those skilled in the art. Summary of the Invention

[0005] This invention provides a display processing method, apparatus, storage medium, processor, and module control board to at least solve the problem that video display devices in the prior art are prone to poor display effects due to video signal fluctuations or momentary loss.

[0006] To achieve the above objectives, according to a first aspect of the present invention, a display processing method is provided, comprising: receiving display control information, the display control information including frame locking control information; determining whether the instruction corresponding to the frame locking control information is a frame lock; and, if the instruction corresponding to the frame locking control information is a frame lock, controlling a display module to continuously display a target image, the target image being a frame image prior to receiving the display control information.

[0007] Furthermore, the display control information is generated by the signal access board; when the signal access board detects an abnormal video signal, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking, or when the signal access board receives a video source switching control instruction, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking.

[0008] Furthermore, the display processing method also includes: determining whether the duration of continuous display of the target image reaches a first preset duration when controlling the display module to continuously display the target image; and controlling the display module to display according to the received video signal when the duration of continuous display of the target image reaches the first preset duration.

[0009] Furthermore, the display processing method also includes: while controlling the display module to continuously display the target image, determining whether the instruction corresponding to the frame lock control information is switched to unlock; and when the instruction corresponding to the frame lock control information is switched to unlock, controlling the display module to display according to the received video signal.

[0010] Furthermore, the display control information also includes video source status information, and the display processing method further includes: determining whether an external video source exists based on the video source status information; and controlling the display module to display according to preset display logic when the external video source does not exist.

[0011] Further, determining whether an external video source exists based on the video source status information includes: determining that the video source does not exist if the video source status information indicates that the video source does not exist; and / or determining that the video source does not exist if no valid video source status information is received within a second preset time period.

[0012] According to a second aspect of the present invention, a display processing apparatus is provided, comprising: a receiving unit for receiving display control information, the display control information including frame locking control information; a first determining unit for determining whether the instruction corresponding to the frame locking control information is a frame locking; and a first controlling unit for controlling a display module to continuously display a target image when the instruction corresponding to the frame locking control information is a frame locking, the target image being a frame image before the display control information was received.

[0013] According to a third aspect of the present invention, a display processing apparatus is provided, comprising: a signal access board having a signal input; a module control board communicatively connected to the signal access board, the module control board being used as an output interface for connection with a display module; the signal access board being configured to: determine the stability of a video signal; and, based on the stability of the video signal, send display control information to the module control board, the display control information including frame-locking control information; the module control board being configured to: receive the display control information; and, when the instruction corresponding to the frame-locking control information is frame-locking, control the display module to continuously display a target image, the target image being a frame before the display control information was received.

[0014] Furthermore, there are multiple signal inputs to connect multiple video sources correspondingly through the multiple signal inputs. The signal access board is also configured to: control the switching between multiple video sources when an abnormal video signal is determined; and / or control the switching between multiple video sources when a video source switching control command is received.

[0015] Furthermore, if the signal access board detects an abnormal video signal, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking; or, if the signal access board receives a video source switching control instruction, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking.

[0016] Furthermore, the module control board is also configured to: determine whether the duration of continuous display of the target image reaches a first preset duration when controlling the display module to continuously display the target image; and control the display module to display according to the received video signal when the duration of continuous display of the target image reaches the first preset duration.

[0017] Furthermore, the module control board is also configured to: determine whether the instruction corresponding to the frame lock control information is switched to unlock when the control display module continuously displays the target image; and control the display module to display according to the received video signal when the instruction corresponding to the frame lock control information is switched to unlock.

[0018] Furthermore, the display control information also includes video source status information. The module control board is also configured to: determine whether an external video source exists based on the video source status information; and control the display module to display according to preset display logic if no external video source exists.

[0019] Further, determining whether an external video source exists based on the video source status information includes: determining that the video source does not exist if the video source status information indicates that the video source does not exist; and / or determining that the video source does not exist if no valid video source status information is received within a second preset time period.

[0020] Furthermore, the display processing device also includes a signal distribution board, which is connected between the signal access board and the module control board to communicate between the signal access board and the module control board.

[0021] According to a fourth aspect of the present invention, a non-volatile storage medium is provided, the non-volatile storage medium including a stored program, wherein, when the program is running, the device where the non-volatile storage medium is located is controlled to execute the above-described display processing method.

[0022] According to a fifth aspect of the present invention, a processor is provided for running a program, wherein the program executes the above-described display processing method during runtime.

[0023] According to a sixth aspect of the present invention, a module control board is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described display processing method.

[0024] The display processing method applying the technical solution of this invention includes: receiving display control information, the display control information including frame-locking control information; determining whether the instruction corresponding to the frame-locking control information is a frame lock; and, if the instruction corresponding to the frame-locking control information is a frame lock, controlling the display module to continuously display the target image, the target image being a frame before the display control information was received. Using this display processing method, by receiving display control information including frame-locking control information, if the instruction corresponding to the frame-locking control information is a frame lock, the display module is controlled to continuously display the target image, thereby freezing the display image of the display module at a frame before the display control information was received, thus avoiding adverse effects on the display caused by video signal fluctuations or momentary loss. Furthermore, the control process is directly based on the display control information, without needing to determine whether the video signal has fluctuated or been lost before executing frame-locking control, effectively avoiding the lag in frame-locking control, effectively improving the display effect of the display module, and solving the problem in the prior art where display devices are prone to poor display effects due to video signal fluctuations or momentary loss. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 This is a flowchart illustrating an optional embodiment of the display processing method according to the present invention;

[0027] Figure 2 This is a schematic diagram of an optional embodiment of the display processing apparatus according to the present invention. Detailed Implementation

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] It should be understood that when an element (such as a layer, film, region, or substrate) is described as being "on" another element, the element may be directly on the other element, or there may be an intermediate element present. Furthermore, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element, or "connected" to the other element via a third element.

[0032] Figure 1 This is a display processing method according to an embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps:

[0033] Step S102: Receive display control information, which includes frame locking control information;

[0034] Step S104: Determine whether the instruction corresponding to the frame lock control information is a frame lock;

[0035] Step S106: When the instruction corresponding to the frame lock control information is a frame lock, control the display module to continuously display the target image, which is the frame before the display control information was received.

[0036] The display processing method using the above scheme includes: receiving display control information, which includes frame-locking control information; determining whether the instruction corresponding to the frame-locking control information is a frame lock; and, if the instruction corresponding to the frame-locking control information is a frame lock, controlling the display module to continuously display the target image, where the target image is the frame before the display control information was received. This display processing method receives display control information including frame-locking control information. If the instruction corresponding to the frame-locking control information is a frame lock, it controls the display module to continuously display the target image, thus freezing the display image of the display module at the frame before the display control information was received. This avoids adverse effects on the display caused by video signal fluctuations or momentary loss. Furthermore, the control process is directly based on the display control information, without needing to determine if the video signal has fluctuated or been lost before executing frame-locking control. This effectively avoids the lag in frame-locking control, significantly improves the display effect of the display module, and solves the problem in existing technologies where display devices are prone to poor display effects due to video signal fluctuations or momentary loss.

[0037] Specifically, the display control information is generated by the signal access board; when the signal access board detects an abnormal video signal, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking, or when the signal access board receives a video source switching control instruction, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking.

[0038] In other words, when the signal receiving board generates display control information, it can base its actions on the detection results of the video signal. If an abnormality is detected in the video signal, the instruction corresponding to the frame lock control information in the display control information it sends will switch from unlocking to frame locking. Alternatively, it can base its actions on the video source switching control instruction, which can be triggered manually or automatically by the user. In response to this instruction, a video source switching operation will be performed. During the switching process, there will be a brief signal interruption. Therefore, based on the video source switching control instruction, it is possible to better anticipate situations of signal instability and issue frame lock commands more promptly to avoid affecting the display effect.

[0039] Specifically, the display processing method further includes: determining whether the duration of continuous display of the target image reaches a first preset duration when the display module is controlled to continuously display the target image; and controlling the display module to display the received video signal when the duration of continuous display of the target image reaches the first preset duration.

[0040] In this embodiment, when the duration for which the display module continuously displays the target image reaches a first preset duration, the display module will be controlled to display according to the received video signal, i.e., the frame locking will cease. This facilitates a more timely switch to normal display mode after the video signal is restored, avoiding stuttering and ensuring display quality; that is, it better guarantees the smoothness of the displayed image. In this embodiment, the first preset duration is 200ms. When the frame locking duration reaches 200ms, the display module will be automatically unlocked and normal display will commence.

[0041] Specifically, the display processing method further includes: while controlling the display module to continuously display the target image, determining whether the instruction corresponding to the frame lock control information is switched to unlock; and when the instruction corresponding to the frame lock control information is switched to unlock, controlling the display module to display according to the received video signal.

[0042] In this embodiment, the display module resumes normal display based on the instruction corresponding to the frame lock control information in the display control information, which switches from frame lock to unlock. At this time, it indicates that the video signal has been restored to normal. Controlling the display module to display according to the received video signal can ensure that the display module can display normally in a timely manner after the video signal is restored. However, compared with the previous scheme that uses a timed method to restore the display, the control is more complex. Although it is more targeted to whether the video signal is normal or not, it may not react in time, resulting in a choppy display. In other words, it can better ensure the integrity of the picture.

[0043] Specifically, the display control information also includes video source status information, and the display processing method further includes: determining whether an external video source exists based on the video source status information; and controlling the display module to display according to preset display logic when the external video source does not exist.

[0044] In other words, the display control information also includes video source status information. As the name suggests, this information represents the status of the video source. Based on this information, it can be determined whether the video source is lost. In the event of a lost video source, the display module will be controlled by a preset display logic to ensure the refresh of various parameters inside the display module. This ensures that the display module can still perform the required display operations after the video signal is lost, reducing the risk of display abnormalities caused by the loss of the video signal.

[0045] Specifically, determining whether an external video source exists based on the video source status information includes: determining that the video source does not exist if the video source status information indicates that the video source does not exist; and / or determining that the video source does not exist if no valid video source status information is received within a second preset time period.

[0046] In practical implementation, the determination of whether a video source exists can be based on the representation content corresponding to the video source status information, or it can be determined that the video source does not exist if no valid video source status information is received within a second preset time period. This allows for a relatively accurate and timely determination of whether a video source exists. For example, in this embodiment, the second preset time period is 1.6 μs.

[0047] Specifically, the display control information can take various forms. For example, in this embodiment, the display control information is transmitted via the LVDS transmission protocol. Its instruction code is 32 bits, including an instruction header, valid instructions, an instruction tail, and an invalid portion. The invalid portion separates two adjacent instructions, thus ensuring the orderliness of the instructions. The valid instructions include a video source status information representation bit and a frame lock control bit. For example, when the video source status information representation bit is 0, it indicates no video source; when the video source status information representation bit is 1, it indicates a video source. When the frame lock control bit is 0, it indicates unlocking; when the frame lock control bit is 1, it indicates frame locking.

[0048] Secondly, such as Figure 2 As shown, an embodiment of the present invention also provides a display processing device, which includes: a receiving unit for receiving display control information, the display control information including frame locking control information; a first determining unit for determining whether the instruction corresponding to the frame locking control information is a frame locking; and a first controlling unit for controlling a display module to continuously display a target image when the instruction corresponding to the frame locking control information is a frame locking, the target image being a frame image before the display control information was received.

[0049] Specifically, the display control information is generated by the signal access board; when the signal access board detects an abnormal video signal, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking, or when the signal access board receives a video source switching control instruction, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking.

[0050] Specifically, the display processing device further includes a second determining unit and a second controlling unit: the second determining unit is used to determine whether the duration of continuously displaying the target image has reached a first preset duration when controlling the display module to continuously display the target image; the second controlling unit is used to control the display module to display according to the received video signal when the duration of continuously displaying the target image has reached the first preset duration.

[0051] Specifically, the display processing device further includes a third determining unit and a third controlling unit: the third determining unit is used to determine whether the instruction corresponding to the frame lock control information is switched to unlock when the display module is continuously displaying the target image; the third controlling unit is used to control the display module to display according to the received video signal when the instruction corresponding to the frame lock control information is switched to unlock.

[0052] Specifically, the display control information also includes video source status information, and the display processing device also includes a fourth determining unit and a fourth controlling unit: the fourth determining unit is used to determine whether an external video source exists based on the video source status information; the fourth controlling unit is used to control the display module to display according to preset display logic when the external video source does not exist.

[0053] Specifically, the fourth determining unit is used to: determine that the video source does not exist when the video source status information indicates that the video source does not exist; and / or determine that the video source does not exist when no valid video source status information is received within a second preset time period.

[0054] Secondly, embodiments of the present invention also provide a display processing device, comprising: a signal access board having a signal input; a module control board communicatively connected to the signal access board, the module control board serving as an output interface for connection with a display module; the signal access board being configured to: determine the stability of a video signal; and, based on the stability of the video signal, send display control information to the module control board, the display control information including frame-locking control information; the module control board being configured to: receive the display control information; and, if the instruction corresponding to the frame-locking control information is frame-locking, control the display module to continuously display a target image, the target image being a frame before the display control information is received. In this way, the signal access board of the display processing device sends display control information to the module control board based on the stability of the received video signal, and the module control board receives the display control information including frame-locking control information. If the instruction corresponding to the frame-locking control information is frame-locking, it controls the display module to continuously display the target image, thereby freezing the display image of the display module at a frame before the display control information is received, thus avoiding adverse effects on the display caused by video signal fluctuations or momentary loss. Moreover, the control process is based on the display control information directly, without needing to determine whether the video signal fluctuates or is lost before performing frame locking control. This effectively avoids the lag in frame locking control, significantly improves the display effect of the display module, and solves the problem in existing technologies where display devices are prone to poor display effects due to video signal fluctuations or momentary loss.

[0055] Specifically, there are multiple signal inputs to connect to multiple video sources. The signal access board is also configured to: control switching between multiple video sources when an abnormal video signal is detected; and / or control switching between multiple video sources when a video source switching control command is received.

[0056] Specifically, when the signal access board detects an abnormal video signal, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking; or, when the signal access board receives a video source switching control instruction, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking.

[0057] In other words, when the signal receiving board generates display control information, it can base its actions on the detection results of the video signal. If an abnormality is detected in the video signal, the instruction corresponding to the frame lock control information in the display control information it sends will switch from unlocking to frame locking. Alternatively, it can base its actions on the video source switching control instruction, which can be triggered manually or automatically by the user. In response to this instruction, a video source switching operation will be performed. During the switching process, there will be a brief signal interruption. Therefore, based on the video source switching control instruction, it is possible to better anticipate situations of signal instability and issue frame lock commands more promptly to avoid affecting the display effect.

[0058] Specifically, the module control board is also configured to: determine whether the duration of continuous display of the target image reaches a first preset duration when the display module continuously displays the target image; and control the display module to display according to the received video signal when the duration of continuous display of the target image reaches the first preset duration.

[0059] In this embodiment, when the duration for which the display module continuously displays the target image reaches a first preset duration, the display module will be controlled to display according to the received video signal, i.e., the frame locking will cease. This facilitates a more timely switch to normal display mode after the video signal is restored, avoiding stuttering and ensuring display quality; that is, it better guarantees the smoothness of the displayed image. In this embodiment, the first preset duration is 200ms. When the frame locking duration reaches 200ms, the display module will be automatically unlocked and normal display will commence.

[0060] Specifically, the module control board is also configured to: determine whether the instruction corresponding to the frame lock control information is switched to unlock when the control display module continuously displays the target image; and control the display module to display according to the received video signal when the instruction corresponding to the frame lock control information is switched to unlock.

[0061] In this embodiment, the display module resumes normal display based on the instruction corresponding to the frame lock control information in the display control information, which switches from frame lock to unlock. At this time, it indicates that the video signal has been restored to normal. Controlling the display module to display according to the received video signal can ensure that the display module can display normally in a timely manner after the video signal is restored. However, compared with the previous scheme that uses a timed method to restore the display, the control is more complex. Although it is more targeted to whether the video signal is normal or not, it may not react in time, resulting in a choppy display. In other words, it can better ensure the integrity of the picture.

[0062] Specifically, the display control information also includes video source status information, and the module control board is also configured to: determine whether an external video source exists based on the video source status information; and control the display module to display according to preset display logic if no external video source exists.

[0063] In other words, the display control information also includes video source status information. As the name suggests, this information represents the status of the video source. Based on this information, it can be determined whether the video source is lost. In the event of a lost video source, the display module will be controlled by a preset display logic to ensure the refresh of various parameters inside the display module. This ensures that the display module can still perform the required display operations after the video signal is lost, reducing the risk of display abnormalities caused by the loss of the video signal.

[0064] Specifically, determining whether an external video source exists based on the video source status information includes: determining that the video source does not exist if the video source status information indicates that the video source does not exist; and / or determining that the video source does not exist if no valid video source status information is received within a second preset time period.

[0065] In practice, the determination of whether a video source exists can be based on the representation content corresponding to the video source status information, or it can be determined that the video source does not exist if no valid video source status information is received within a second preset time period, thus enabling a relatively accurate and timely determination of whether a video source exists.

[0066] Specifically, the display processing device further includes a signal distribution board, which is connected between the signal access board and the module control board to enable communication between the signal access board and the module control board. Specifically, the signal distribution board can decode display control information and send it to the module control board after re-encoding.

[0067] In addition, embodiments of the present invention also provide a non-volatile storage medium, which includes a stored program, wherein the program controls the device where the non-volatile storage medium is located to execute the above-described display processing method during runtime.

[0068] Furthermore, embodiments of the present invention also provide a processor for running a program, wherein the program executes the above-described display processing method during runtime.

[0069] Finally, embodiments of the present invention also provide a module control board, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described display processing method.

[0070] The sequence numbers of the above embodiments of the present invention are merely for descriptive purposes and do not represent the superiority or inferiority of the embodiments. Moreover, the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than that shown here.

[0071] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0072] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0073] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0074] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0075] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0076] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A display processing method, characterized in that, include: Receive display control information, which includes frame lock control information and video source status information; Determine whether the instruction corresponding to the lock frame control information is a lock frame; When the instruction corresponding to the frame lock control information is a frame lock, the display module is controlled to continuously display the target image, which is the frame before the display control information is received. The display control information is generated by the signal access board; When the signal access board detects an abnormal video signal, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking; or, when the signal access board receives a video source switching control instruction, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking. Based on the video source status information, determine whether an external video source exists; In the absence of the external video source, the display module is controlled to display according to a preset display logic.

2. The display processing method according to claim 1, characterized in that, The display processing method further includes: While controlling the display module to continuously display the target image, determine whether the duration of continuous display of the target image has reached a first preset duration; If the duration of continuously displaying the target image reaches the first preset duration, the display module is controlled to display according to the received video signal.

3. The display processing method according to claim 1, characterized in that, The display processing method further includes: While controlling the display module to continuously display the target image, determine whether the instruction corresponding to the frame lock control information is switched to unlock; When the instruction corresponding to the frame lock control information is switched to unlock, the display module is controlled to display according to the received video signal.

4. The display processing method according to claim 1, characterized in that, Determining whether an external video source exists based on the video source status information includes: If the video source status information indicates that the video source does not exist, it is determined that the video source does not exist; and / or, If no valid video source status information is received within a second preset time period, it is determined that the video source does not exist.

5. A display processing device, characterized in that, include: The receiving unit is used to receive display control information, which includes frame locking control information and video source status information; The first determining unit is used to determine whether the instruction corresponding to the lock frame control information is a lock frame; The first control unit is configured to control the display module to continuously display the target image when the instruction corresponding to the lock frame control information is a lock frame, wherein the target image is a frame image before the display control information is received; The display processing device further includes a signal access board, and the display control information is generated by the signal access board. When the signal access board detects an abnormal video signal, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking; or, when the signal access board receives a video source switching control instruction, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking. Based on the video source status information, determine whether an external video source exists; In the absence of the external video source, the display module is controlled to display according to a preset display logic.

6. A display processing device, characterized in that, include: A signal access board having multiple signal inputs for connecting multiple video sources. A module control board, which is communicatively connected to the signal access board, is used as an output interface for connecting to the display module; The signal access board is configured to: determine the stability of the video signal; and, based on the stability of the video signal, send display control information to the module control board, wherein the display control information includes frame locking control information and video source status information; The module control board is configured to: receive the display control information; when the instruction corresponding to the frame locking control information is a frame locking instruction, the module control board controls the display module to continuously display the target image, the target image being the frame image before the display control information is received; When the signal access board detects an abnormality in the video signal, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking; or, when the signal access board receives the video source switching control instruction, the instruction corresponding to the frame lock control information is switched from unlocking to frame locking. The module control board is also configured to: determine whether an external video source exists based on the video source status information; In the absence of the external video source, the display module is controlled to display according to a preset display logic.

7. The display processing apparatus according to claim 6, characterized in that, The signal access board is also configured to: If an anomaly is detected in the video signal, control the switching between multiple video sources; and / or, Upon receiving a video source switching control command, the system controls the switching between multiple video sources.

8. The display processing apparatus according to claim 6, characterized in that, The module control board is also configured to: While controlling the display module to continuously display the target image, determine whether the duration of continuous display of the target image has reached a first preset duration; If the duration of continuously displaying the target image reaches the first preset duration, the display module is controlled to display according to the received video signal.

9. The display processing apparatus according to claim 6, characterized in that, The module control board is also configured to: While controlling the display module to continuously display the target image, determine whether the instruction corresponding to the frame lock control information is switched to unlock; When the instruction corresponding to the frame lock control information is switched to unlock, the display module is controlled to display according to the received video signal.

10. The display processing apparatus according to claim 6, characterized in that, Determining whether an external video source exists based on the video source status information includes: If the video source status information indicates that the video source does not exist, it is determined that the video source does not exist; and / or, If no valid video source status information is received within a second preset time period, it is determined that the video source does not exist.

11. The display processing apparatus according to any one of claims 6 to 8, characterized in that, The display processing device further includes: A signal distribution board is connected between the signal access board and the module control board to enable communication between the signal access board and the module control board.

12. A non-volatile storage medium, characterized in that, The non-volatile storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the non-volatile storage medium to perform the display processing method according to any one of claims 1 to 4.

13. A processor, characterized in that, The processor is used to run a program, wherein the program executes the display processing method according to any one of claims 1 to 4 when it runs.

14. A module control board, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the display processing method according to any one of claims 1 to 4.

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