CN114390155B - Method, device, electronic equipment and storage medium for signal backup display - Google Patents
Method, device, electronic equipment and storage medium for signal backup display Download PDFInfo
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- CN114390155B CN114390155B CN202111624135.1A CN202111624135A CN114390155B CN 114390155 B CN114390155 B CN 114390155B CN 202111624135 A CN202111624135 A CN 202111624135A CN 114390155 B CN114390155 B CN 114390155B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H40/00—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices
- G16H40/60—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices
- G16H40/63—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for local operation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention relates to a method, a device, an electronic device and a storage medium for signal backup display, wherein the method comprises the following steps: decoding the main signal to obtain a main picture signal; decoding the backup signal to obtain a backup picture signal; determining an optional picture signal based on a stable condition of the main picture signal, a stable condition of the backup picture signal, and a signal synchronization technique; determining a target picture signal based on the optional picture signal and a signal synthesis technique in the presence of the optional picture signal; sending the target picture signal to a display screen for display under the condition that the target picture signal exists; wherein the primary signal and the backup signal are two identical signals. The invention overcomes the defect that the picture signals of the display screen can not be stably output in the switching period of the main signal and the backup signal in the prior art, and ensures the uninterrupted stable display of the signals under the condition that the main signal and the backup signal are not simultaneously failed.
Description
Technical Field
The present invention relates to the field of signal transmission technologies, and in particular, to a method, an apparatus, an electronic device, and a storage medium for signal backup display.
Background
In the use process of the professional medical display, abnormal display phenomena such as display loss or unstable display and the like may occur to signals under the influence of factors such as transmission environment, board faults and the like, and the abnormal display phenomena directly influence the medical effect of the medical display, particularly abnormal display phenomena occurring in operation may directly cause operation failure. Therefore, it is particularly necessary to ensure proper display of the signals of the professional medical display.
At present, the signal backup mode is used for solving the problem that the abnormal display phenomenon is the main stream, the conventional signal backup mode is that two paths of the same signals, namely a main signal and a backup signal, are connected through a control board, the control board detects the main signal, and when the main signal is detected to be abnormal, the main signal is switched to the backup signal. However, in the signal switching process, the control board needs to reestablish a detection mechanism of the backup signal and buffer and detect the backup signal, which takes a long time; during this period, stable output of the picture cannot be ensured.
Disclosure of Invention
The invention aims to provide a signal backup display method, a device, electronic equipment and a storage medium, which are used for solving the defect that stable output of pictures cannot be ensured during switching of a main signal and a backup signal, realizing uninterrupted stable display of signals under the condition that the main signal and the backup signal are not simultaneously failed, and are particularly suitable for use scenes with strict requirements on signal display.
In a first aspect, an embodiment of the present invention provides a method for signal backup display, including:
decoding the main signal to obtain a main picture signal;
decoding the backup signal to obtain a backup picture signal;
determining an optional picture signal based on a stable condition of the main picture signal, a stable condition of the backup picture signal, and a signal synchronization technique;
determining a target picture signal based on the optional picture signal and a signal synthesis technique in the presence of the optional picture signal;
sending the target picture signal to a display screen for display under the condition that the target picture signal exists;
wherein the primary signal and the backup signal are two identical signals.
According to the signal backup display method provided by the invention, the main signal is decoded, and the main line field synchronous signal is also obtained; decoding the backup signal to obtain a backup line field synchronous signal;
the determining an optional picture signal based on the stable condition of the main picture signal, the stable condition of the backup picture signal, and the signal synchronization technique includes:
under the condition that the main picture signal and the backup picture signal are stable, synchronizing the main picture signal and the backup picture signal based on the main line field synchronizing signal and the backup line field synchronizing signal by adopting a signal synchronizing technology;
taking the synchronized main picture signal and the synchronized backup picture signal as selectable picture signals;
in the case that the main picture signal is stable and the backup picture signal is unstable, taking the main picture signal as an optional picture signal;
taking the backup picture signal as an optional picture signal when the backup picture signal is stable and the main picture signal is unstable;
in the case where both the main picture signal and the backup picture signal are unstable, the optional picture signal is determined to be absent.
According to the method for signal backup display provided by the invention, the method for determining the target picture signal based on the optional picture signal and the signal synthesis technology under the condition that the optional picture signal exists comprises the following steps:
detecting the stability of the selectable picture signal;
eliminating unstable optional picture signals;
and determining a target picture signal based on the rejected optional picture signal and a signal synthesis technology.
According to the method for signal backup display provided by the invention, the method for determining the target picture signal based on the rejected optional picture signal and the signal synthesis technology comprises the following steps:
under the condition that the removed selectable picture signals simultaneously comprise the synchronized main picture signal and the synchronized backup picture signal, synthesizing the synchronized main picture signal and the synchronized backup picture signal by adopting a signal synthesis technology, and determining the synthesized picture signal as a target picture signal;
determining the main picture signal or the synchronized main picture signal as a target picture signal when the removed selectable picture signal only contains the main picture signal or the synchronized main picture signal;
determining the backup picture signal or the synchronized backup picture signal as a target picture signal when the rejected selectable picture signal only contains the backup picture signal or the synchronized main picture signal;
in other cases, it is determined that the target picture signal is not present.
According to the method for signal backup display provided by the invention, the target picture signal is sent to a display screen for display, and meanwhile, the method further comprises the following steps:
and in the absence of the optional picture signal, prompting that the main signal and the backup signal are unstable.
According to the method for signal backup display provided by the invention, the target picture signal is sent to a display screen for display, and meanwhile, the method further comprises the following steps:
and under the condition that the target picture signal does not exist, prompting that the main signal and the backup signal are unstable.
According to the method for signal backup display provided by the invention, the target picture signal is sent to a display screen for display, and meanwhile, the method further comprises the following steps:
when the target picture signal is the main picture signal or the synchronized main picture signal, the backup signal is prompted to be unstable;
and when the target picture signal is the backup picture signal or the synchronized backup picture signal, prompting that the main signal is unstable.
In a second aspect, the present invention also provides a device for signal backup display, including:
the signal decoding unit is used for decoding the main signal to obtain a main picture signal;
the signal synchronization unit is used for decoding the backup signal to obtain a backup picture signal;
determining an optional picture signal based on a stable condition of the main picture signal, a stable condition of the backup picture signal, and a signal synchronization technique;
an image synthesizing unit configured to determine a target picture signal based on the optional picture signal and a signal synthesizing technique in the presence of the optional picture signal;
the display control unit is used for sending the target picture signal to a display screen for display under the condition that the target picture signal exists;
wherein the primary signal and the backup signal are two identical signals.
In a third aspect, the present invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method of signal backup display according to the first aspect when the program is executed.
In a fourth aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of signal backup display of the first aspect.
The invention provides a signal backup display method, a device, electronic equipment and a storage medium, which are used for decoding a main signal to obtain a main picture signal; decoding the backup signal to obtain a backup picture signal; the picture signal which can be displayed with the picture signal is preliminarily selected by measuring the stable condition of the main picture signal and the stable condition of the backup picture signal, namely the picture signal is selected; then, under the condition that the selectable picture signal exists, the selectable picture signal is selected again to obtain a target picture signal which is sent to a display screen for final display; unstable picture signals are abandoned in the selection process, and the display screen only displays stable picture signals; the uninterrupted stable display of the signals under the condition that the main signal and the backup signal are not simultaneously failed is ensured, and the reliability of the signal display is improved.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for signal backup display provided by the invention;
FIG. 2 is a schematic illustration of a method of signal backup display provided by the present invention;
FIG. 3 is a schematic diagram of a device for signal backup display according to the present invention;
FIG. 4 is a schematic diagram of an actual path of signal backup provided by the present invention;
fig. 5 is a schematic structural diagram of an electronic device for implementing a method for signal backup display according to the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The method, apparatus, electronic device and storage medium of the signal backup display of the present invention are described below with reference to fig. 1-5.
In a first aspect, the present invention provides a method for signal backup display, as shown in fig. 1, where the method includes:
s11, decoding the main signal to obtain a main picture signal;
s12, decoding the backup signal to obtain a backup picture signal;
specifically, the decoding operations of the main signal and the backup signal are all commonly used in the prior art, and are not described herein. The picture signal mentioned here is a signal to be outputted to the liquid crystal panel for display, i.e., a signal carrying user's demand information.
S13, determining an optional picture signal based on the stable condition of the main picture signal, the stable condition of the backup picture signal and a signal synchronization technology;
because it is crucial to ensure the stable signal in the signal transmission, the unstable signal has no meaning of display, so the picture signal which can be displayed with the picture signal can be selected preliminarily by measuring the stable condition of the main picture signal and the backup picture signal, namely the optional picture signal; the process is aided by signal synchronization techniques, which are known in the art and are not further explained.
S14, determining a target picture signal based on the optional picture signal and a signal synthesis technology in the presence of the optional picture signal;
in the invention, stable picture signals are possibly interfered by surrounding environment in the transmission and synchronization processes and the like to be converted into unstable picture signals, so that the invention screens the selectable picture signals to obtain target picture signals, and ensures that the target picture signals are stable by two times of screening, thereby improving the display effect.
In addition, the absence of the selectable picture signal represents that no picture signal is currently available for output display, at which time the display screen is black.
S15, under the condition that the target picture signal exists, the target picture signal is sent to a display screen to be displayed;
it will be appreciated that the absence of the target picture signal represents that no picture signal is currently available for output display, at which point the display screen is black.
Wherein the primary signal and the backup signal are two identical signals.
To illustrate the principle of the method of signal backup display of the present invention, FIG. 2 is provided; in fig. 2 a represents a main signal and a' represents a backup signal. As can be seen from fig. 2, the image buffer stores the combined result of the a signal and the a' signal; namely, a picture signal obtained by a series of processing of the A signal and/or a picture signal obtained by a series of processing of the A' signal;
specifically, when only the A signal fails in the display processing process, the image buffer area only stores the picture signal obtained by a series of processing of the A' signal, and the picture signal is used for image display;
when only the A' signal fails in the display processing process, only the A signal of the image buffer area stores the picture signal obtained after a series of processing, and the picture signal is used for image display;
when both the A signal and the A 'signal have faults in the display processing process, the image buffer area stores a picture signal obtained by a series of processing of the A' signal and a composite signal of the picture signal obtained by a series of processing of the A signal.
Therefore, only the A signal is in fault in the display processing process or only the A' signal is in fault in the display processing process, the output signal is not affected, buffer data do not need to be switched again, uninterrupted stable display of the signal is ensured, and the reliability of signal display is improved. Meanwhile, the invention has the characteristics of simplicity, easiness in operation and strong practicability.
The signal backup display method provided by the invention decodes the main signal to obtain a main picture signal; decoding the backup signal to obtain a backup picture signal; the picture signal which can be displayed with the picture signal is preliminarily selected by measuring the stable condition of the main picture signal and the stable condition of the backup picture signal, namely the picture signal is selected; then, under the condition that the selectable picture signal exists, the selectable picture signal is selected again to obtain a target picture signal which is sent to a display screen for final display; unstable picture signals are abandoned in the selection process, and the display screen only displays stable picture signals; the uninterrupted stable display of the signals under the condition that the main signal and the backup signal are not simultaneously failed is ensured, and the reliability of the signal display is improved.
On the basis of the above embodiments, as an optional embodiment, the decoding the main signal further obtains a main line field synchronization signal; decoding the backup signal to obtain a backup line field synchronous signal;
it is understood that the line-field synchronizing signal is a pulse signal sent to the signal receiving end after the normal end of the line/field scanning in order to synchronize the line scanning and the field scanning rules of the signal receiving end with the line/field synchronizing signal, and the pulse signal is the line/field synchronizing signal. That is, the line-field sync signal is auxiliary information for prompting the effective line signal section and the effective field information section.
The determining an optional picture signal based on the stable condition of the main picture signal, the stable condition of the backup picture signal, and the signal synchronization technique includes:
under the condition that the main picture signal and the backup picture signal are stable, synchronizing the main picture signal and the backup picture signal based on the main line field synchronizing signal and the backup line field synchronizing signal by adopting a signal synchronizing technology;
taking the synchronized main picture signal and the synchronized backup picture signal as selectable picture signals;
it can be understood that the main picture signal and the backup picture signal are stable, and represent that the main picture signal and the backup picture signal are both satisfactory for display; therefore, the invention adopts the signal synchronization technology and uses the main line field synchronization signal and the backup line field synchronization signal as the basis to synchronize the main picture signal and the backup picture signal; so as to ensure that two paths of signals used as optional picture signals are stable and synchronous, and provide a basis for the determination of a subsequent target picture.
In the case that the main picture signal is stable and the backup picture signal is unstable, taking the main picture signal as an optional picture signal;
it will be appreciated that only when the main picture signal is stable, it represents that the backup picture signal is unstable, i.e. the backup picture signal should be discarded without displaying meaning, and the main picture signal is directly used as the optional picture signal without performing a synchronization operation.
It should be noted that, the signal is suddenly changed or suddenly changed, and no signal is in the unstable signal range.
Taking the backup picture signal as an optional picture signal when the backup picture signal is stable and the main picture signal is unstable;
also, only when the backup picture signal is stable, it represents that the main picture signal is unstable, i.e., the main picture signal should be discarded without displaying meaning, and the backup picture signal is directly used as the optional picture signal without performing a synchronization operation.
The invention only selects stable picture signals, discards unstable picture signals, directly reduces the interference of the unstable picture signals on output display, and improves the stability of signal display.
In the case where both the main picture signal and the backup picture signal are unstable, the optional picture signal is determined to be absent.
It will be appreciated that both the primary picture signal and the backup picture signal are unstable, representing no satisfactory picture signal, i.e. no optional picture signal is present. This is not common and typically occurs when the display device fails. Unstable picture signals are also discarded, and the accuracy of signal display is directly ensured.
On the basis of the above embodiments, as an optional embodiment, the determining, in the presence of the optional picture signal, the target picture signal based on the optional picture signal and the signal synthesis technique includes:
detecting the stability of the selectable picture signal;
in the technical field of the present invention, in the process of processing the main signal picture signal and the backup picture signal to obtain the optional picture signal, the signal may be changed from stable to unstable, so that each optional picture signal needs to be detected, thereby determining the stability of each optional picture signal.
Eliminating unstable optional picture signals;
it can be appreciated that the unstable optional picture signal should be removed, thereby ensuring that the removed picture signal is in a stable state.
And determining a target picture signal based on the rejected optional picture signal and a signal synthesis technology.
And selecting the removed picture signals again to obtain target picture signals which are sent to a display screen for final display so as to finish final display operation. The process is aided by signal synthesis techniques, which are known in the art and will not be further explained.
The invention carries out secondary check on the stability of the selectable picture signal through the setting so as to eliminate the situation that the unstable picture signal is selected as the target picture signal because of being influenced by the transmission environment of the display, thereby ensuring the stable display of the signal on the display screen.
On the basis of the foregoing embodiments, as an optional embodiment, the determining the target picture signal based on the rejected optional picture signal and the signal synthesis technology includes:
under the condition that the removed selectable picture signals simultaneously comprise the synchronized main picture signal and the synchronized backup picture signal, synthesizing the synchronized main picture signal and the synchronized backup picture signal by adopting a signal synthesis technology, and determining the synthesized picture signal as a target picture signal;
it should be noted that, in the case where the removed picture signal includes the synchronized main picture signal and the synchronized backup picture signal, generally, the synchronized main picture signal and the synchronized backup picture signal are identical, so that one of the signals may be regarded as the target picture information;
determining the main picture signal or the synchronized main picture signal as a target picture signal when the removed selectable picture signal only contains the main picture signal or the synchronized main picture signal;
determining the backup picture signal or the synchronized backup picture signal as a target picture signal when the rejected selectable picture signal only contains the backup picture signal or the synchronized main picture signal;
in other cases, it is determined that the target picture signal is not present.
In the invention, the target picture information is obtained through strict screening steps, so that the normal display of the signal is ensured, and in addition, as long as the target picture signal continuously exists, the display screen can perform uninterrupted stable display, and the reliability of the signal display is improved.
On the basis of the foregoing embodiments, as an optional embodiment, the sending the target picture signal to a display screen for displaying, further includes:
and in the absence of the optional picture signal, prompting that the main signal and the backup signal are unstable.
It can be understood that, in the use process, the input states of the current main signal and the backup signal are prompted on the display screen, so that the user can normally set the main picture signal and the backup picture signal in the initial state.
When this occurs, the display screen has only a prompt that both the primary signal and the backup signal are unstable, and the other parts are black. The setting can prompt the user that the current main picture signal and the backup picture are unstable in time, so that the user can check the faults of the display in time.
On the basis of the foregoing embodiments, as an optional embodiment, the sending the target picture signal to a display screen for displaying, further includes:
and under the condition that the target picture signal does not exist, prompting that the main signal and the backup signal are unstable.
When this occurs, the display screen also has only a prompt that both the primary signal and the backup signal are unstable, and the other parts are black.
The user may diagnose the operational status of the display based on the prompt to troubleshoot.
On the basis of the foregoing embodiments, as an optional embodiment, the sending the target picture signal to a display screen for displaying, further includes:
when the target picture signal is the main picture signal or the synchronized main picture signal, the backup signal is prompted to be unstable;
and when the target picture signal is the backup picture signal or the synchronized backup picture signal, prompting that the main signal is unstable.
It should be noted that the indication of the instability of the backup signal and the instability of the main signal is embedded in the target picture signal for display together. The user may diagnose the operational status of the display at the prompt to troubleshoot.
In a second aspect, the device for signal backup display provided by the present invention is described, and the device for signal backup display described below and the method for signal backup display described above may be referred to correspondingly. Fig. 3 illustrates a schematic structural diagram of a device for signal backup display, as shown in fig. 3, the device includes: a signal decoding unit 21, a signal synchronizing unit 22, an image synthesizing unit 23, and a display control unit 24.
Wherein, the signal decoding unit 21 is configured to decode the main signal to obtain a main picture signal; the method is also used for decoding the backup signal to obtain a backup picture signal;
a signal synchronization unit 22 for determining an optional picture signal based on a stable condition of the main picture signal, a stable condition of the backup picture signal, and a signal synchronization technique;
an image synthesizing unit 23 for determining a target picture signal based on the optional picture signal and a signal synthesizing technique in the presence of the optional picture signal;
an image synthesis unit buffer area is arranged in the image synthesis unit and is used for buffering the optional picture signals sent by the signal synchronization unit;
a display control unit 24, configured to send the target picture signal to a display screen for display when the target picture signal exists;
the display control unit is provided with an image buffer unit for buffering the target picture signal sent by the image synthesis unit.
Wherein the primary signal and the backup signal are two identical signals.
FIG. 4 provides a schematic diagram of an actual path of signal backup, as shown in FIG. 4, the A signal and the A 'signal enter a signal decoding unit to be decoded, and picture signals and line field synchronous signals corresponding to the A signal and picture signals and line field synchronous signals corresponding to the A' signal are obtained; the four signals enter the signal synchronization unit 22, and the signal synchronization unit performs primary selection of the picture signals based on the stable condition of the picture signal corresponding to the A signal and the stable condition of the picture signal corresponding to the A' signal to determine the selectable picture signals; the selectable picture signals enter an image synthesis unit buffer area of the image synthesis unit 23, and other functional components of the image synthesis unit reselect the selectable picture signals to obtain target picture signals which are sent to a display screen for final display; finally, the target picture signal enters an image buffer area of the display control unit 24, and the display control unit sends the signal of the image buffer unit to the liquid crystal screen for display under the notification of the image synthesis unit.
The signal backup display device provided by the invention decodes the main signal to obtain a main picture signal; decoding the backup signal to obtain a backup picture signal; the picture signal which can be displayed with the picture signal is preliminarily selected by measuring the stable condition of the main picture signal and the stable condition of the backup picture signal, namely the picture signal is selected; then, under the condition that the selectable picture signal exists, the selectable picture signal is selected again to obtain a target picture signal which is sent to a display screen for final display; unstable picture signals are abandoned in the selection process, and the display screen only displays stable picture signals; the uninterrupted stable display of the signals under the condition that the main signal and the backup signal are not simultaneously failed is ensured, and the reliability of the signal display is improved.
On the basis of the above embodiments, as an alternative embodiment, the signal decoding unit 21 is further configured to: decoding the main signal to obtain a main line field synchronous signal; and decoding the backup signal to obtain a backup line field synchronous signal.
On the basis of the above embodiments, as an alternative embodiment, the signal synchronization unit 22 includes: the first, second, third and fourth determination sub-modules;
the first determining submodule is used for synchronizing the main picture signal and the backup picture signal based on the main line field synchronizing signal and the backup line field synchronizing signal under the condition that the main picture signal and the backup picture signal are stable;
taking the synchronized main picture signal and the synchronized backup picture signal as selectable picture signals;
the third determining submodule is used for taking the main picture signal as an optional picture signal when the main picture signal is stable and the backup picture signal is unstable;
taking the backup picture signal as an optional picture signal when the backup picture signal is stable and the main picture signal is unstable;
the fourth determination submodule is configured to determine that an optional picture signal is not present in a case where both the main picture signal and the backup picture signal are unstable.
On the basis of the above embodiments, as an alternative embodiment, the image synthesizing unit 23 includes: the device comprises a detection sub-module, a rejection sub-module and a fifth determination sub-module;
the detection submodule is used for detecting the stability of the selectable picture signals;
the eliminating submodule is used for eliminating unstable optional picture signals;
the fifth determining submodule is used for determining a target picture signal based on the rejected optional picture signal and a signal synthesis technology.
On the basis of the foregoing embodiments, as an optional embodiment, the fifth determining sub-module further includes: the first, second, third and fourth recognizing sub-units;
the first identifying subunit is configured to synthesize the synchronized main picture signal and the synchronized backup picture signal by using a signal synthesis technology when the removed selectable picture signal includes the synchronized main picture signal and the synchronized backup picture signal at the same time, and determine that the synthesized picture signal is a target picture signal;
the second identifying subunit is configured to determine, when the removed selectable picture signal only includes the main picture signal or the synchronized main picture signal, that the main picture signal or the synchronized main picture signal is a target picture signal;
the third identifying subunit is configured to determine, when the rejected optional picture signal only includes the backup picture signal or the synchronized main picture signal, that the backup picture signal or the synchronized backup picture signal is a target picture signal;
the fourth determination subunit is configured to determine that the target picture signal does not exist in other cases.
On the basis of the above embodiments, as an alternative embodiment, the apparatus further includes: a first reminding unit;
the third reminding unit is used for sending the target picture signal to a display screen for display and simultaneously, under the condition that the optional picture signal does not exist,
the main signal and the backup signal are not stable.
On the basis of the above embodiments, as an alternative embodiment, the apparatus further includes: a second reminding unit;
the third reminding unit is used for sending the target picture signal to the display screen for display, and reminding that the main signal and the backup signal are unstable under the condition that the target picture signal does not exist.
On the basis of the above embodiments, as an alternative embodiment, the apparatus further includes: a third reminding unit, which is used for reminding the user of the user,
the third reminding unit is used for reminding that the backup signal is unstable when the target picture signal is sent to a display screen for display and when the target picture signal is the main picture signal or the synchronized main picture signal;
and when the target picture signal is the backup picture signal or the synchronized backup picture signal, prompting that the main signal is unstable.
In a third aspect, fig. 5 illustrates a physical schematic diagram of an electronic device, as shown in fig. 5, where the electronic device may include: processor 510, communication interface (Communications Interface) 520, memory 530, and communication bus 540, wherein processor 510, communication interface 520, memory 530 complete communication with each other through communication bus 540. Processor 510 may invoke logic instructions in memory 530 to perform a method of signal backup display, the method comprising: decoding the main signal to obtain a main picture signal; decoding the backup signal to obtain a backup picture signal; determining an optional picture signal based on a stable condition of the main picture signal, a stable condition of the backup picture signal, and a signal synchronization technique; determining a target picture signal based on the optional picture signal and a signal synthesis technique in the presence of the optional picture signal; sending the target picture signal to a display screen for display under the condition that the target picture signal exists; wherein the primary signal and the backup signal are two identical signals.
Further, the logic instructions in the memory 530 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In a fourth aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which when executed by a processor is implemented to perform the method of signal backup display provided above, the method comprising: decoding the backup signal to obtain a backup picture signal; determining an optional picture signal based on a stable condition of the main picture signal, a stable condition of the backup picture signal, and a signal synchronization technique; determining a target picture signal based on the optional picture signal and a signal synthesis technique in the presence of the optional picture signal; sending the target picture signal to a display screen for display under the condition that the target picture signal exists; wherein the primary signal and the backup signal are two identical signals. The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A method of signal backup display, the method comprising:
decoding the main signal to obtain a main picture signal;
decoding the backup signal to obtain a backup picture signal;
determining an optional picture signal based on a stable condition of the main picture signal, a stable condition of the backup picture signal, and a signal synchronization technique;
determining a target picture signal based on the optional picture signal and a signal synthesis technique in the presence of the optional picture signal;
sending the target picture signal to a display screen for display under the condition that the target picture signal exists;
wherein the main signal and the backup signal are two identical signals;
decoding the main signal to obtain a main line field synchronous signal; decoding the backup signal to obtain a backup line field synchronous signal;
the determining an optional picture signal based on the stable condition of the main picture signal, the stable condition of the backup picture signal, and the signal synchronization technique includes:
under the condition that the main picture signal and the backup picture signal are stable, synchronizing the main picture signal and the backup picture signal based on the main line field synchronizing signal and the backup line field synchronizing signal by adopting a signal synchronizing technology;
taking the synchronized main picture signal and the synchronized backup picture signal as selectable picture signals;
in the case that the main picture signal is stable and the backup picture signal is unstable, taking the main picture signal as an optional picture signal;
taking the backup picture signal as an optional picture signal when the backup picture signal is stable and the main picture signal is unstable;
in the case that the main picture signal and the backup picture signal are both unstable, determining that the optional picture signal does not exist;
the determining, in the presence of the optional picture signal, a target picture signal based on the optional picture signal and a signal synthesis technique, comprising:
detecting the stability of the selectable picture signal;
eliminating unstable optional picture signals;
determining a target picture signal based on the rejected optional picture signal and a signal synthesis technology;
the determining a target picture signal based on the rejected optional picture signal and the signal synthesis technology comprises the following steps:
under the condition that the removed selectable picture signals simultaneously comprise the synchronized main picture signal and the synchronized backup picture signal, synthesizing the synchronized main picture signal and the synchronized backup picture signal by adopting a signal synthesis technology, and determining the synthesized picture signal as a target picture signal;
determining the main picture signal or the synchronized main picture signal as a target picture signal when the removed selectable picture signal only contains the main picture signal or the synchronized main picture signal;
determining the backup picture signal or the synchronized backup picture signal as a target picture signal when the rejected selectable picture signal only contains the backup picture signal or the synchronized backup picture signal;
in other cases, it is determined that the target picture signal is not present.
2. The method for signal backup display according to claim 1, wherein the sending the target picture signal to a display screen for display, further comprises:
and in the absence of the optional picture signal, prompting that the main signal and the backup signal are unstable.
3. The method for signal backup display according to claim 1, wherein the sending the target picture signal to a display screen for display, further comprises:
and under the condition that the target picture signal does not exist, prompting that the main signal and the backup signal are unstable.
4. The method for signal backup display according to claim 1, wherein the sending the target picture signal to a display screen for display, further comprises:
when the target picture signal is the main picture signal or the synchronized main picture signal, the backup signal is prompted to be unstable;
and when the target picture signal is the backup picture signal or the synchronized backup picture signal, prompting that the main signal is unstable.
5. An apparatus for signal backup display, the apparatus comprising:
the signal decoding unit is used for decoding the main signal to obtain a main picture signal; the method is also used for decoding the backup signal to obtain a backup picture signal;
a signal synchronization unit for determining an optional picture signal based on a stable condition of the main picture signal, a stable condition of the backup picture signal, and a signal synchronization technique;
an image synthesizing unit configured to determine a target picture signal based on the optional picture signal and a signal synthesizing technique in the presence of the optional picture signal;
the display control unit is used for sending the target picture signal to a display screen for display under the condition that the target picture signal exists;
wherein the main signal and the backup signal are two identical signals;
decoding the main signal to obtain a main line field synchronous signal; decoding the backup signal to obtain a backup line field synchronous signal;
the determining an optional picture signal based on the stable condition of the main picture signal, the stable condition of the backup picture signal, and the signal synchronization technique includes:
under the condition that the main picture signal and the backup picture signal are stable, synchronizing the main picture signal and the backup picture signal based on the main line field synchronizing signal and the backup line field synchronizing signal by adopting a signal synchronizing technology;
taking the synchronized main picture signal and the synchronized backup picture signal as selectable picture signals;
in the case that the main picture signal is stable and the backup picture signal is unstable, taking the main picture signal as an optional picture signal;
taking the backup picture signal as an optional picture signal when the backup picture signal is stable and the main picture signal is unstable;
in the case that the main picture signal and the backup picture signal are both unstable, determining that the optional picture signal does not exist;
the determining, in the presence of the optional picture signal, a target picture signal based on the optional picture signal and a signal synthesis technique, comprising:
detecting the stability of the selectable picture signal;
eliminating unstable optional picture signals;
determining a target picture signal based on the rejected optional picture signal and a signal synthesis technology;
the determining a target picture signal based on the rejected optional picture signal and the signal synthesis technology comprises the following steps:
under the condition that the removed selectable picture signals simultaneously comprise the synchronized main picture signal and the synchronized backup picture signal, synthesizing the synchronized main picture signal and the synchronized backup picture signal by adopting a signal synthesis technology, and determining the synthesized picture signal as a target picture signal;
determining the main picture signal or the synchronized main picture signal as a target picture signal when the removed selectable picture signal only contains the main picture signal or the synchronized main picture signal;
determining the backup picture signal or the synchronized backup picture signal as a target picture signal when the rejected selectable picture signal only contains the backup picture signal or the synchronized backup picture signal;
in other cases, it is determined that the target picture signal is not present.
6. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor performs the steps of the method of signal backup display as claimed in any one of claims 1 to 4 when the program is executed.
7. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the steps of the method of signal backup display according to any of claims 1 to 4.
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