CN112162888A - Method and device for determining reason of black screen of display and computer storage medium - Google Patents
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- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
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Abstract
The invention discloses a method for determining the reason of the black screen of a display, which comprises the following steps: when the player is detected to play a video, carrying out snapshot on a display picture of the display at preset time intervals; judging whether the display is in a black screen or not according to the picture obtained by the snapshot; when the display generates a black screen, acquiring a log file of the player in a set range by taking black screen generation time as a reference, wherein the black screen generation time is determined according to time corresponding to the picture obtained by the snapshot; and determining the reason for the black screen of the display according to the log file. The invention also discloses a device and a computer readable storage medium, which solve the problem that the reason for displaying the black screen by the system in the prior art is difficult to determine.
Description
Technical Field
The invention relates to the technical field of intelligent terminals, in particular to a method and a device for determining a reason for a black screen of a display and a computer storage medium.
Background
With the broadband of the video broadcast, the application of the intelligent terminal to play the video via the network is more and more extensive, for example, the intelligent television plays the video via the network.
However, the problem of system display black screen may occur in the process of playing video, and the conventional method is to restore factory settings or power-off operation of the intelligent terminal, and in addition, the reasons for the black screen phenomenon of the intelligent terminal are various, and the intelligent terminal cannot be restored to normal state by restoring factory settings or power-off operation, and at this time, developers are required to spend more time to detect and position the reason of the black screen, which brings trouble to users and developers. Therefore, the prior art also has the problem that the reason for displaying the black screen by the system is difficult to determine.
Disclosure of Invention
The invention mainly aims to provide a method and a device for determining the reason of the black screen of a display and a computer storage medium, and aims to solve the problem that the reason of the black screen displayed by a system in the prior art is difficult to determine.
In order to achieve the above object, the present invention provides a method for determining a reason for displaying a black screen, including the steps of:
when the player is detected to play a video, carrying out snapshot on a display picture of the display at preset time intervals;
judging whether the display is in a black screen or not according to the picture obtained by the snapshot;
when the display generates a black screen, acquiring a log file of the player in a set range by taking black screen generation time as a reference, wherein the black screen generation time is determined according to time corresponding to the picture obtained by the snapshot;
and determining the reason for the black screen of the display according to the log file.
In one embodiment, the detecting that the player plays the video includes:
acquiring system log information;
matching the system log information with the keyword information of the player in real time;
and when the matching is successful, judging that the player is detected to play the video.
In one embodiment, the method further comprises:
and synchronously capturing player log information when the player is detected to play the video.
In one embodiment, the method further comprises:
running a first thread to store the player log information in real time;
and running a second thread to carry out snapshot on the display picture of the display at preset time intervals.
In one embodiment, the step of running the first thread to store the player log information in real time comprises:
and storing the player log information in a storage file of a preset storage path in real time, wherein the type of the storage file is a text file, and the storage file is named according to system time.
In one embodiment, the method further comprises:
detecting the size of the storage file in real time;
and when the size of the storage file exceeds a preset threshold value, deleting the storage file, and storing the player log information into a new file.
In one embodiment, the method further comprises:
and when the size of the storage file does not exceed a preset threshold value, continuously storing the player log information into the storage file.
In an embodiment, the step of determining whether the display is blacked according to the picture obtained from the snapshot includes:
detecting a designated area of a picture obtained by the snapshot;
and in the appointed area, judging whether the screen blacking occurs or not according to whether gray values of pixel points of preset areas are smaller than an appointed gray threshold value or not.
In order to achieve the above object, the present invention further provides an apparatus, which includes a memory, a processor, and a program for determining a cause of a display black screen stored in the memory and executable on the processor, wherein the program for determining a cause of a display black screen, when executed by the processor, implements the steps of the method for determining a cause of a display black screen as described above.
In order to achieve the above object, the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a program for determining a cause of a display black screen, and the program for determining a cause of a display black screen, when executed by a processor, implements the steps of the method for determining a cause of a display black screen as described above.
According to the method, the device and the computer storage medium for determining the reason for the black screen of the display, provided by the invention, as the video playing of the player is detected, the display picture of the display is snapshot at intervals of preset time, the specified area of the display is detected according to the picture obtained by the snapshot, whether the black screen occurs or not is judged, and when the preset area is detected to be the full black area, the log file of the player within the set range with the black screen occurrence time as the reference is obtained, so that the reason for the black screen occurrence of the display can be rapidly and accurately determined, the time and labor cost is reduced, and the problem that the reason for the black screen display of the system is difficult to determine in the prior art is solved.
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FIG. 1 is a schematic diagram of an apparatus according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method for determining a cause of a black screen of a display according to a first embodiment of the present invention;
FIG. 3 is a diagram of 5 designated areas on a display screen;
FIG. 4 is a flowchart illustrating a method for determining a cause of a black screen of a display according to a second embodiment of the present invention;
FIG. 5 is a flowchart illustrating a method for determining a cause of a black screen of a display according to a third embodiment of the present invention;
fig. 6 is a flowchart illustrating a method for determining a reason for a black screen of a display according to a fourth embodiment of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: when the player is detected to play a video, carrying out snapshot on a display picture of the display at preset time intervals; judging whether the display is in a black screen or not according to the picture obtained by the snapshot; when the display generates a black screen, acquiring a log file of the player in a set range by taking black screen generation time as a reference, wherein the black screen generation time is determined according to time corresponding to the picture obtained by the snapshot; and determining the reason for the black screen of the display according to the log file. The method comprises the steps of taking a snapshot of a display picture of the player at preset intervals when the player is detected to play a video, detecting a designated area according to a picture obtained by the snapshot, judging whether a black screen occurs, and acquiring a log file of the player within a set range with the black screen occurrence time as a reference when a preset area is detected to be a full black area.
As an implementation manner, fig. 1 may be shown, where fig. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
It will be appreciated that memory 1200 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1200 of the systems and methods described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
Based on the above structure, an embodiment of the present invention is proposed.
Referring to fig. 2, fig. 2 is a first embodiment of a method for determining a cause of a display black screen according to the present invention, where the method for determining a cause of a display black screen includes the following steps:
step S110, when it is detected that the player plays the video, a snapshot is taken on a display frame of the display at preset time intervals.
In this embodiment, the system refers to an intelligent terminal having a display function and capable of playing video, and the intelligent terminal includes, but is not limited to, an intelligent device having a display function, such as a smart television, a computer, a mobile phone, a wearable portable device, and a tablet computer. A player generally refers to software capable of playing video or audio files stored in the form of digital signals, and also refers to an electronic device product having a function of playing video or audio files. The display is a display tool which displays a certain electronic file on a screen through a specific transmission device and reflects the electronic file to human eyes. The display picture refers to a picture on a display of the intelligent terminal, for example, a picture on a display screen of the intelligent television.
When the intelligent terminal detects that the player plays a video, the intelligent terminal takes a snapshot of a display picture on the display screen at a preset time interval, wherein the preset time may be preferably 10s, for example, when the intelligent television is playing the video, the intelligent terminal takes a snapshot of a current picture at every 10 s.
And step S120, judging whether the display is in a black screen according to the pictures obtained by the snapshot.
In this embodiment, a display image is snapshot at intervals of a preset time, and then a picture is obtained, the picture obtained by the snapshot is detected to determine whether a black screen occurs, specifically, each area in the designated area of the picture is detected, in the designated area, whether a black screen occurs is determined according to whether gray values of pixel points of a preset area are all smaller than a designated gray threshold, the picture is composed of pixels, the gray value of the pixel point of each area in the designated area is detected, and for an area, whether the area is a black screen can be determined according to the read gray value. Specifically, the gray value can be characterized by the degree of gray. The larger the grayscale value, the more apparent the gray is. The smaller the grey value, the less noticeable the grey, the closer to black. Therefore, if the pixel points with the gray values larger than or equal to the designated gray threshold exist in the area, the pixel points which are not black exist in the area, and therefore the situation that the screen blacking phenomenon does not occur can be judged. And if the gray values of the pixel points in the area are all smaller than the specified gray threshold, the phenomenon of screen blacking can be judged to occur. The designated gray threshold may be a gray value flexibly set according to actual conditions. For example, the designated regions of the picture are set to 5 designated regions, which are the upper left corner region, the upper right corner region, the lower left corner region, the lower right corner region and the middle region, and the preset regions may be preferably 3 regions, that is, by detecting the 5 regions, whether the black screen occurs is determined according to whether the gray values of the pixel points of 3 or more than 3 regions in the 5 regions are all smaller than the designated gray threshold.
Referring to fig. 3, fig. 3 is a diagram showing 5 designated areas on a display screen.
Step S130, when the display generates a black screen, acquiring a log file of the player in a set range by taking the black screen generation time as a reference, wherein the black screen generation time is determined according to the time corresponding to the picture obtained by the snapshot.
In this embodiment, the time of the occurrence of the black screen is determined according to the time corresponding to the picture obtained by the snapshot, and according to the above-mentioned snapshot of the display screen of the display every 10s, the picture obtained by the snapshot has a time corresponding to the time of the occurrence of the black screen, and if the occurrence of the black screen of the picture obtained by the snapshot is detected, the time of the occurrence of the black screen is the time corresponding to the picture. The setting range may be a time range set according to actual conditions, and for example, the setting range is preferably a range of 1 minute before and after the black screen occurrence time as a reference. The log file refers to a recording file or a file collection for recording system operation events, and can be divided into an event log and a message log. The method has important roles in processing historical data, tracing diagnosis problems, understanding system activities and the like. The player log file is used for recording a recording file or a file set of the player operation event, and the information recorded by the player log file comprises the running information of the player and the information of whether the picture obtained by the snapshot is a black screen, time and the like. The setting range may be a log number range, and for example, the setting range is preferably 1000 logs before and after the log corresponding to the black screen occurrence time.
When the display is in a black screen state, for example, 3 or more than 3 of the 5 designated areas are full black areas, the display is judged to be in the black screen state. And acquiring the log file of the player in a set range by taking the black screen occurrence time as a reference.
And step S140, determining the reason for the black screen of the display according to the log file.
In this embodiment, according to the log file in the setting range with the black screen occurrence time as a reference, a developer or a technician may perform diagnostic analysis through a network to determine the cause of the black screen occurrence of the display.
In the technical scheme provided by this embodiment, since it is detected that the player plays a video, a display picture of the player is snapshot at preset intervals, a designated area is detected according to a picture obtained by the snapshot, whether a black screen occurs is judged, and when a preset area is detected as a full black area, a log file of the player within a set range with the black screen occurrence time as a reference is obtained, so that the reason why the display generates the black screen can be quickly and accurately determined, the time and labor cost is reduced, and the problem that the reason why the system displays the black screen is difficult to determine in the prior art is solved.
Referring to fig. 4, fig. 4 is a second embodiment of the method for determining the reason for the black screen of the display according to the present invention, including:
compared with the first embodiment, the second embodiment includes step S210, step S220, and step S230, and other steps are the same as the first embodiment and are not repeated.
Step S210, system log information is acquired.
In this embodiment, the system log information records various events occurring in the system, such as start, run, and shut down of various services in the system. For example, log information of the smart television is acquired.
Step S220, matching the system log information with the keyword information of the player in real time.
In this embodiment, the system log information includes running information of various services, the keyword information of the Player may preferably be related information of a Media Player keyword, and the Media Player (also called Media Player), which is usually referred to as Media Player, refers to playing software used for playing multimedia in a computer, and gathers decoders together to generate a playing function. Such as Windows Media Player, etc. Since the chinese Windows in front of Windows Me has always called Windows Media Player as Media Player, the Media Player has become a synonym for Windows Media Player among older users of computers. However, with the continuous development of the media industry, some players of advertisement pictures can also be called as media players, such as video media players of popular media, mirror media players of popular media, and the like; public transport television is also a media player.
The log information of the system is matched with the key information of the Player, i.e., the related information of the Media Player key, in real time.
Step S230, when the matching is successful, it is determined that the player has detected that the video is played, and the display picture is snapshot at preset time intervals.
In this embodiment, when the log information of the system is successfully matched with the keyword information of the player, indicating that the player is running, it is determined that the player is detected to be playing the video, for example, if the log information of the smart television is successfully matched with the keyword information of the player, it is determined that the player is playing the video.
And step S240, judging whether the display has a black screen according to the pictures obtained by the snapshot.
And step S250, when the display generates a black screen, acquiring a log file of the player in a set range by taking the black screen generation time as a reference, wherein the black screen generation time is determined according to the time corresponding to the picture obtained by the snapshot.
And step S260, determining the reason for the black screen of the display according to the log file.
In the technical solution provided by this embodiment, log information of the system is obtained, and then the log information of the system is matched with the keyword information of the Player, that is, the Media Player keyword information, in real time, and when the matching is successful, it is determined that the Player is playing a video. The phenomenon of a black screen may occur only when the player is playing video, which is a prerequisite for determining the reason why the system displays a black screen.
Referring to fig. 5, fig. 5 is a third embodiment of the method for determining the reason for the black screen of the display according to the present invention, including:
in step S310, system log information is acquired.
Step S320, matching the system log information with the keyword information of the player in real time.
Step S330, when the matching is successful, judging that the player plays the video, and carrying out snapshot on the display picture at preset time intervals.
Compared with the second embodiment, the third embodiment includes step S340, and other steps are the same as those of the first embodiment and are not repeated.
Step S340, when it is detected that the player plays the video, synchronously capturing the log information of the player.
In this embodiment, when it is detected that the player is playing a video, log file information of the player is synchronously captured, and an attribute value is set, for example, the time viewing range of the log file of the player is set to be wider, specifically, the start time parameter or the end time parameter of the time viewing range of the log file of the player is set to be wider, so that more log information for viewing the player can be obtained.
And step S350, judging whether the display is in a black screen according to the pictures obtained by the snapshot.
And step S360, when the display generates a black screen, acquiring a log file of the player in a set range by taking the black screen generation time as a reference, wherein the black screen generation time is determined according to the time corresponding to the picture obtained by the snapshot.
And step S370, determining the reason for the black screen of the display according to the log file.
In the technical solution provided in this embodiment, when it is detected that the player is playing a video, log file information of the player is synchronously captured, and then an attribute value is set, for example, a time viewing range of a log file of the player can be set to be wider, so that more log information for viewing the player can be obtained.
Referring to fig. 6, fig. 6 is a fourth embodiment of the method for determining the reason for the black screen of the display according to the present invention, including:
in step S410, system log information is acquired.
Step S420, matching the system log information with the keyword information of the player in real time.
Step S430, when the matching is successful, it is determined that the player is detected to play the video.
Step S440, when it is detected that the player plays the video, synchronously capturing the log information of the player.
Compared with the third embodiment, the fourth embodiment includes step S450 and step S460, and other steps are the same as those of the third embodiment and are not repeated.
Step S450, operating a first thread to store the player log information in real time.
In this embodiment, a thread (thread) is the smallest unit that the operating system can perform operation scheduling. It is included in the process and is the actual unit of operation in the process. A thread refers to a single sequential control flow in a process, multiple threads can be concurrently executed in a process, and each thread executes different tasks in parallel.
The storage path of the file can be generally divided into an internal storage path and an external storage path, and here, the internal storage file is preferably used for storing the log information of the player in the storage file of the/data/path in real time.
Running a first thread to store the log information of the player in a storage file of the/data/path, wherein the type of the storage file is a text file, the naming of the storage file is named according to the system time, namely the current time of the player playing the video, for example, the time of the player playing the video is 2020-08-11-18:00, and then the naming is carried out according to the time.
And then, detecting the size of the stored file in real time, presetting a threshold, deleting the stored file when the size of the current stored file exceeds the preset threshold, and storing the log information of the player into a new file according to a preset path, wherein the preset threshold can be preferably 200M, namely deleting the current stored file when the size of the current stored file exceeds 200M, storing the log information of the player into the new file, and naming the new file according to the system time. And when the current storage file does not exceed the preset threshold value, continuously storing the log information of the player into the current storage file.
Step S460, the second thread is run to snapshot the display screen of the display at preset time intervals.
And running the second thread to perform snapshot on the display screen of the video played by the display at preset time intervals, for example, running the second thread to perform snapshot on the display screen of the video played by the display at preset time intervals by the smart television.
Step S470, determining whether the display is blank according to the picture obtained from the snapshot.
Step S480, when the display generates a black screen, acquiring a log file of the player in a set range by taking black screen generation time as a reference, wherein the black screen generation time is determined according to time corresponding to the picture obtained by the snapshot.
And step S490, determining the reason for the display screen blacking according to the log file.
In the technical scheme provided by the embodiment, the running thread carries out snapshot on the display picture of the video played by the display at preset time intervals; the running thread stores the log information of the player in a storage file in real time, a threshold value is set for the storage file, the current storage file is deleted when the preset threshold value is exceeded, the log information of the player is stored in a new storage file, the name of the storage file is named according to the system time, the acquisition of developers and technicians is facilitated, the size of the file is limited, and the working cost is reduced.
The invention also provides a device comprising a memory, a processor and a program for determining the cause of the display black screen, which is stored in the memory and can run on the processor, wherein the program for determining the cause of the display black screen realizes the steps of the method for determining the cause of the display black screen.
The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a program for determining a cause of a display black screen, and the program for determining a cause of a display black screen, when executed by a processor, implements the steps of the method for determining a cause of a display black screen as described above.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for determining the reason for the black screen of a display is characterized by comprising the following steps:
when the player is detected to play a video, carrying out snapshot on a display picture of the display at preset time intervals;
judging whether the display is in a black screen or not according to the picture obtained by the snapshot;
when the display generates a black screen, acquiring a log file of the player in a set range by taking black screen generation time as a reference, wherein the black screen generation time is determined according to time corresponding to the picture obtained by the snapshot;
and determining the reason for the black screen of the display according to the log file.
2. The method for determining the reason for the black screen of the display according to claim 1, wherein the detecting that the player plays the video comprises:
acquiring system log information;
matching the system log information with the keyword information of the player in real time;
and when the matching is successful, judging that the player is detected to play the video.
3. The method for determining the reason for the black screen of the display according to claim 2, further comprising:
and synchronously capturing player log information when the player is detected to play the video.
4. The method for determining the reason for the black screen of the display according to claim 3, further comprising:
running a first thread to store the player log information in real time;
and running a second thread to carry out snapshot on the display picture of the display at preset time intervals.
5. The method for determining the reason for the display black screen as claimed in claim 4, wherein the step of running the first thread to store the player log information in real time comprises:
and storing the player log information in a storage file of a preset storage path in real time, wherein the type of the storage file is a text file, and the storage file is named according to system time.
6. The method for determining the reason for the black screen of the display according to claim 5, further comprising:
detecting the size of the storage file in real time;
and when the size of the storage file exceeds a preset threshold value, deleting the storage file, and storing the player log information into a new file.
7. The method for determining the reason for the black screen of the display according to claim 6, further comprising:
and when the size of the storage file does not exceed a preset threshold value, continuously storing the player log information into the storage file.
8. The method for determining the reason for the black screen of the display as claimed in claim 1, wherein the step of determining whether the black screen of the display occurs according to the picture obtained from the snapshot comprises:
detecting a designated area of a picture obtained by the snapshot;
and in the appointed area, judging whether the screen blacking occurs or not according to whether gray values of pixel points of preset areas are smaller than an appointed gray threshold value or not.
9. An apparatus comprising a memory, a processor and a program for determining a cause of a display black screen stored in the memory and executable on the processor, the program for determining a cause of a display black screen implementing the steps of the method for determining a cause of a display black screen according to any one of claims 1 to 8 when executed by the processor.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a program for determining a cause of a display black screen, which when executed by a processor implements the steps of the method for determining a cause of a display black screen according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010991772.1A CN112162888A (en) | 2020-09-18 | 2020-09-18 | Method and device for determining reason of black screen of display and computer storage medium |
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