CN109493775B - Display fault detection method and device and terminal equipment - Google Patents
Display fault detection method and device and terminal equipment Download PDFInfo
- Publication number
- CN109493775B CN109493775B CN201811565119.8A CN201811565119A CN109493775B CN 109493775 B CN109493775 B CN 109493775B CN 201811565119 A CN201811565119 A CN 201811565119A CN 109493775 B CN109493775 B CN 109493775B
- Authority
- CN
- China
- Prior art keywords
- brightness value
- display
- fault
- target area
- display screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention is suitable for the technical field of electronics, and provides a detection method, a device and terminal equipment for display faults, wherein the detection method, the device and the terminal equipment comprise the following steps: acquiring the brightness value of a target area in real time, wherein the target area is an area reserved on a display screen and used for switching a specific picture at a preset frequency; and if the brightness value of the target area is inconsistent with the target value, judging that the display screen has a display fault. The embodiment of the invention can effectively detect the display fault of the display screen in time with low cost.
Description
Technical Field
The invention belongs to the technical field of electronics, and particularly relates to a display fault detection method and device and terminal equipment.
Background
With the development of terminal technology, various terminal devices have become important components of people's lives, and the display screen, which is a common output device of the existing terminal devices, is also very important. Display faults such as black screen, white screen, flower screen, picture stop and the like sometimes exist in daily work and operation of the display screen, and the display faults usually need to be discovered only by manual inspection, so that the display faults cannot be detected and processed in time. For example, the LCD vehicle-mounted guidance screen is applied to buses, buses and subways in many cities, when the display screen fails, a driver cannot find the display screen timely, and the convenience of passenger travel and the satisfaction degree of smart cities are greatly influenced.
The existing automatic detection method for display faults is to collect the actual display content of a display screen in real time through a camera and transmit the actual display content back to a host system for judgment, and the method needs the host to collect and analyze the actual display content all the time, consumes system resources, needs to be provided with an extra high-resolution camera device, and has the defects of high cost and low efficiency.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method and an apparatus for detecting a display failure, and a terminal device, so as to solve a problem in the prior art how to detect a display failure of a display screen in time with low cost and high efficiency.
A first aspect of an embodiment of the present invention provides a method for detecting a display fault, including:
acquiring the brightness value of a target area in real time, wherein the target area is an area reserved on a display screen and used for switching a specific picture at a preset frequency;
and if the brightness value of the target area is inconsistent with the target value, judging that the display screen has a display fault.
A second aspect of an embodiment of the present invention provides a detection apparatus for displaying a fault, including:
the system comprises an acquisition unit, a processing unit and a display unit, wherein the acquisition unit is used for acquiring the brightness value of a target area in real time, and the target area is an area which is reserved on a display screen and is used for switching a specific picture at a preset frequency;
and the first judging unit is used for judging that the display screen has display faults if the brightness value of the target area is inconsistent with the target value.
A third aspect of the embodiments of the present invention provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the display failure detection method when executing the computer program.
A fourth aspect of embodiments of the present invention provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the display failure detection method as described.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: in the embodiment of the invention, whether the display screen has the display fault can be detected in time only by acquiring and comparing the brightness value of the target area in real time, and the actual display content of the image of the whole screen does not need to be specifically analyzed, so that the display fault of the display screen can be detected more efficiently, and meanwhile, an additional high-resolution camera device does not need to be configured, so that the detection cost is greatly reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flow chart of an implementation of a first display fault detection method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a system for displaying fault detection according to an embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating an implementation of a second display fault detection method according to an embodiment of the present invention;
fig. 4 is a schematic flow chart illustrating an implementation of a third method for detecting a display fault according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a fault detection device provided in an embodiment of the present invention;
fig. 6 is a schematic diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
In addition, in the description of the present application, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
The first embodiment is as follows:
fig. 1 shows a schematic flow chart of a first display fault detection method provided in an embodiment of the present application, which is detailed as follows:
in S101, acquiring a brightness value of a target area in real time, where the target area is an area reserved on a display screen and used for switching a specific picture at a preset frequency.
The display screen may be a Liquid Crystal Display (LCD) or a cathode ray display (CRT), or an LED display screen, or other types of screens capable of displaying information, and is not limited herein. The target area is a small area which is positioned on the display screen and has an area far smaller than the full screen area of the display screen.
Besides the reserved target area, other areas on the display screen normally display essential information required to be displayed, such as a traffic route map, advertisement and other multimedia information on the vehicle-mounted display screen. The target area performs specific frame switching at a preset frequency, where the specific frame includes at least a first frame having first color luminance information and a second frame having second color luminance information, and the specific frame may be a single-color frame, such as a red frame, a yellow frame, a black frame, etc., in which each pixel in the target area maintains the same RGB value, or a multi-color frame, in which the RGB values of each pixel in the target area are not uniform, and is not limited herein. The color brightness information of a particular picture affects the brightness value of the target area, and a particular picture, whether a monochrome picture or a multi-color picture, has a unique range of brightness values, which may be a specific brightness value or a range of brightness values within a fluctuation range.
The brightness value of the target area is collected in real time, and the corresponding brightness value of the target area in each specific picture can be collected in real time through the light sensor. Fig. 2 is a schematic diagram of a system structure for displaying fault detection, where a display fault detection apparatus is an execution main body of a detection method for displaying faults according to an embodiment of the present invention.
Preferably, the target area is located in a corner area on the display screen, such as the upper left corner or the lower left corner, the upper right corner, or the lower right corner of the display screen, so that the target area does not affect the integrity and the aesthetic property of other areas when the essential information is normally displayed.
In S102, if the brightness value of the target area is not consistent with the target value, it is determined that a display failure exists on the display screen.
When the display screen is in a normal operation state, the target area performs specific picture switching at a preset frequency, and other areas normally display essential information required to be displayed. At this time, the brightness value of the target area should be consistent with the brightness value corresponding to a specific frame, where the only brightness value range corresponding to a specific frame is the target value. Alternatively, the target value may be obtained by counting the brightness values of each specific picture for a plurality of times and storing the counted brightness values corresponding to the specific pictures, for example, storing the target value corresponding to each specific picture in a list manner. When the target area performs specific picture switching at a preset frequency, the target area correspondingly performs corresponding brightness switching, and the brightness value of the target area is kept synchronous and consistent with the target value within a certain range, wherein the certain range means that the brightness value of the target area and the target value are allowed to have a short time delay and time error are asynchronous, namely the brightness value of the target area and the target value are kept synchronous and consistent within a negligible error time range, namely the brightness value of the target area is considered to be consistent with the target value.
When the display screen has a display fault, that is, the display screen is in an out-of-control disorder condition, essential information required to be displayed on other areas cannot be normally displayed, and similarly, the target area cannot be switched at a preset frequency as expected. At this time, the brightness value of the target area cannot be kept consistent with the target value, that is, the brightness value of the target area cannot be kept consistent with the target value in synchronization within the error time. Therefore, when the luminance value of the target area does not coincide with the target value, it is determined that there is a display failure of the display screen, such as a black screen failure, a white screen failure, an odd screen failure, a picture stop failure, or the like.
Optionally, after determining that the display screen has a display fault if the brightness value of the target area is not consistent with the target value, the method further includes:
and if the display screen has a display fault, sending alarm information to a specified terminal.
When the display screen is judged to have display faults, the alarm information can be sent to a designated terminal in a certain format in a wired or wireless communication mode, the designated terminal can be a server or a user terminal, and when the designated terminal is the server, the alarm information can be further forwarded to the user terminal. The user terminal can report the alarm information in a voice mode or display the alarm information in a screen display mode, so that related personnel are reminded, and the related personnel can timely handle and display faults.
In the embodiment of the invention, whether the display screen has the display fault can be detected in time only by acquiring and comparing the brightness value of the target area in real time, and the actual display content of the image of the whole screen does not need to be specifically analyzed, so that the display fault of the display screen can be detected more efficiently, and meanwhile, an additional high-resolution camera device does not need to be configured, so that the detection cost is greatly reduced.
Example two:
fig. 3 shows a schematic flowchart of a second display fault detection method provided in an embodiment of the present application, which is detailed as follows:
in S301, a brightness value of a target area is collected in real time, where the target area is an area reserved on a display screen and used for switching between black and white pictures at a preset frequency.
The target area is a small area which is positioned on the display screen and has an area far smaller than the full screen area of the display screen. Except the reserved target area, other areas on the display screen normally display essential information required to be displayed, such as a traffic route map, advertisement and other multimedia information on a vehicle-mounted display screen. The target area is switched between the black and white pictures at a preset frequency, namely, the two pictures are switched between the black picture and the white picture at the preset frequency. The black picture and the white picture have corresponding brightness values, and the brightness value of the target area can be collected in real time through the light sensor.
In S302, if the brightness value of the target area is not consistent with a target value, it is determined that a display fault exists on the display screen, where the target value includes a first preset brightness value and a second preset brightness value.
The target value includes a first preset brightness value and a second preset brightness value, the first preset brightness value is a brightness value corresponding to a black image preset by the program, the second preset brightness value is a brightness value corresponding to a white image preset by the program, the target value may be a range value, for example, the first preset brightness value corresponding to the black image is less than 10, and the second preset brightness value corresponding to the white image is 75-85. When the display screen normally works, the target area switches between a black picture and a white picture at a preset frequency, and correspondingly, the brightness value of the target area switches between a first preset brightness value and a second preset brightness value at the preset frequency. When the brightness value of the target area is detected to be inconsistent with the target value, namely the target area is not switched between the first preset brightness value and the second preset brightness value according to the preset frequency, the display screen is in an out-of-control state, and a display fault of the display screen is determined, wherein the display fault can include a black screen fault, a white screen fault, a flower screen fault, a picture stop fault and the like.
Optionally, if the brightness value of the target area is inconsistent with the target value, determining that a display fault exists on the display screen, including:
if the brightness value of the target area is continuously smaller than or equal to a first preset brightness value, judging that a display fault exists in the display screen, wherein the display fault is a black screen fault or a picture stop fault.
When the acquired brightness value of the target area is continuously smaller than or equal to a first preset brightness value, that is, the brightness value of the target area is always smaller than or equal to a first preset brightness value corresponding to a black image within a preset time period (for example, within 30 seconds or 1 minute, specifically, the time period is set according to a preset frequency and is greater than the inverse of the preset frequency), for example, the first preset brightness value is smaller than or equal to 10, and the brightness value of the target area is always smaller than 10 or is always equal to 10, it is determined that a display fault exists on the display screen at this time, and the display fault is a black screen fault or an image stop fault. Namely, the whole picture of the display screen is continuously in the out-of-control state of the black screen, the target area can not carry out picture switching according to the preset frequency, and other areas can not display essential information required to be displayed and are occupied by the black picture; or, a whole picture of the display screen is static at a certain moment, at this moment, the target area just falls on a black picture, and other areas are static on a certain picture, so that dynamic essential information cannot be normally displayed.
Optionally, if the brightness value of the target area is not consistent with the target value, determining that a display fault exists on the display screen, including:
if the brightness value of the target area is continuously larger than or equal to a second preset brightness value, judging that a display fault exists in the display screen, wherein the display fault is a white screen fault or a picture stop fault.
When the collected brightness value of the target area is continuously greater than or equal to a second preset brightness value, that is, the brightness value of the target area is always greater than or equal to a second preset brightness value corresponding to a white picture within a preset time period (for example, within 30 seconds or 1 minute, specifically, the time period is set according to a preset frequency and is greater than the inverse of the preset frequency), for example, the second preset brightness value is 75-85, and the brightness value of the target area is always within an interval range of the second preset brightness value, or is always greater than 85, it is determined that a display fault exists on the display screen at the time, and the display fault is a white screen fault, that is, an entire picture of the display screen is continuously in a runaway state of the white screen, the target area cannot perform picture switching according to the preset frequency, and other areas cannot display essential information required to be displayed, and are occupied by the white picture; or, a whole picture of the display screen is static at a certain moment, at this moment, the target area just falls on a white picture, and other areas are static on a certain picture, so that dynamic essential information cannot be normally displayed.
Optionally, if the brightness value of the target area is not consistent with the target value, determining that a display fault exists on the display screen, including:
if the brightness value of the target area is continuously equal to a fixed value, and the fixed value is larger than the first preset brightness value and smaller than the second preset brightness value, it is determined that a display fault exists on the display screen, and the display fault is a picture stop fault or a screen splash fault.
When the brightness value of the target area is continuously equal to a fixed value, that is, the brightness value of the target area is always kept at a fixed value within a preset time period (for example, within 30 seconds or 1 minute, specifically, the time period is set according to a preset frequency and needs to be greater than the inverse of the preset frequency), where the fixed value is greater than a first preset brightness value corresponding to the black image and less than a second preset brightness value corresponding to the white image, it is determined that a display failure exists on the display screen at this time, and the display failure is a screen-splash failure. That is, the display screen is in a disordered runaway state at this time, the target area cannot be switched to a black and white picture with a specific frequency as expected, and other areas cannot normally display essential information required to be displayed and are occupied by still pictures with other colors.
Optionally, if the brightness value of the target area is not consistent with the target value, determining that a display fault exists on the display screen, including:
if the brightness value of the target area continuously changes and the brightness value which is larger than the first preset brightness value and smaller than the second preset brightness value exists in the continuously changed brightness value, judging that a display fault exists in the display screen, wherein the display fault is a screen-blooming fault.
When the brightness value of the target area is in a changing state within a preset time period, but the changing brightness value does not correspond to the target value, but the changing brightness value has a brightness value which is greater than a first preset brightness value corresponding to the black picture and less than a second preset brightness value corresponding to the white picture, it is determined that a display fault exists on the display screen at the moment, and the display fault is a screen-blooming fault. That is, at this time, the display screen is in a disordered runaway state, the target area cannot switch the black and white pictures with specific frequency as expected, and other areas cannot normally display the essential information required to be displayed and are occupied by the runaway dynamic pictures.
In the embodiment of the invention, the display fault of the display screen is timely detected at low cost and high efficiency, and the simple black and white picture is specifically adopted as the specific picture, so that the detection process of the display fault is further simplified, and the detection efficiency of the display fault is improved.
Example three:
fig. 4 is a schematic flow chart illustrating a third method for detecting display faults according to an embodiment of the present application, which is detailed as follows:
in S401, a brightness value of a target area is collected in real time, where the target area is an area reserved on a display screen and used for switching a specific picture at a preset frequency.
In this embodiment, S401 is the same as S101 in the first embodiment, and please refer to the related description of S101 in the first embodiment, which is not repeated herein.
In S402, if the brightness value of the target area is not consistent with the target value, it is determined that a display failure exists on the display screen.
S402 in this embodiment is the same as S102 in the second embodiment, and please refer to the related description of S102 in the second embodiment, which is not repeated herein.
In S403, the current of the display screen is monitored in real time.
The current of the display screen can be detected in real time through an ammeter, for example, for the display screen which is a Liquid Crystal Display (LCD), the current value of the power supply for supplying power to a TCON board and a backlight board of the LCD can be detected in real time.
In S404, if the current exceeds a preset current range value, it is determined that a display fault exists on the display screen.
When the display screen normally works, the current value of the display screen is within a normal preset current range value, the corresponding display screen current when the normally working display screen displays various essential information pictures can be detected and recorded for a plurality of times in advance, the preset current range value is obtained through statistics, and the preset current range value is stored. When the detected current exceeds the preset current range value, the current display screen is abnormal in operation and has display faults.
Optionally, when the detected current of the display screen is smaller than a preset current range value but not 0, it is determined that a display fault exists on the display screen, and the display fault is a screen breaking fault.
The screen breaking fault refers to that a substrate of the display screen breaks, so that a circuit cannot work normally, and the power supply current of the display screen is reduced and is smaller than a normal preset current range value.
Optionally, when the detected current of the display screen is 0, it is determined that a display fault exists in the display screen, and the display fault is a power-off black screen fault.
When the display screen can not work at all, the detected current value is 0, the display screen is in a power-off state at the moment, any content can not be displayed, and the display fault is a power-off black screen fault.
Optionally, when the detected current of the display screen is greater than a preset current range value, it is determined that a display fault exists on the display screen, and the display fault is a white screen fault.
When a whole display screen is in a white screen state, the power supply current of the display screen can be increased sharply and exceeds the preset current range value. Therefore, when the current of the display screen is larger than the preset current range value, the display screen has a display fault, and the display fault is a white screen fault.
In the embodiment of the invention, the display fault is detected by detecting the brightness value of the target area, and the current of the display screen is monitored in real time, so that the display fault detection of the display screen is further perfected, and the detection efficiency of the display fault is improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Example four:
fig. 5 is a schematic structural diagram of a detection apparatus for displaying a fault according to an embodiment of the present application, and for convenience of description, only a part related to the embodiment of the present application is shown:
the detection device for displaying the fault comprises: an acquisition unit 51 and a first judgment unit 52. Wherein:
the collecting unit 51 is configured to collect, in real time, a brightness value of a target area, where the target area is an area reserved on the display screen and used for switching a specific picture at a preset frequency.
The display screen may be a Liquid Crystal Display (LCD) or a cathode ray display (CRT), or an LED display screen, or other types of screens capable of displaying information, and is not limited herein. The target area is a small area which is positioned on the display screen and has an area far smaller than the full screen area of the display screen.
Except the reserved target area, other areas on the display screen normally display essential information required to be displayed, such as a traffic route map, advertisement and other multimedia information on a vehicle-mounted display screen. The target area performs specific frame switching at a preset frequency, where the specific frame includes at least a first frame having first color luminance information and a second frame having second color luminance information, and the specific frame may be a single-color frame, such as a red frame, a yellow frame, a black frame, etc., in which each pixel in the target area maintains the same RGB value, or a multi-color frame, in which the RGB values of each pixel in the target area are not uniform, and is not limited herein. The color brightness information of a particular picture affects the brightness value of the target area, and a particular picture, whether a monochrome picture or a multi-color picture, has a unique range of brightness values, which may be a specific brightness value or a brightness value within a small fluctuation range.
The brightness value of the target area is collected in real time, and the corresponding brightness value of the target area in each specific picture can be collected in real time through the light sensor.
And a first determination unit 52, configured to determine that a display failure exists on the display screen if the brightness value of the target area does not coincide with the target value.
When the display screen is in a normal operation state, the target area performs specific picture switching at a preset frequency, and other areas normally display essential information required to be displayed. At this time, the brightness value of the target area should be consistent with the brightness value corresponding to a specific frame, wherein the only brightness value range corresponding to a specific frame is the target value. Alternatively, the target value may be obtained by counting the brightness value of each specific picture for a plurality of times and storing the count corresponding to the specific picture, for example, storing the target value corresponding to each specific picture in a list manner. When the target area performs specific picture switching at a preset frequency, the target area correspondingly performs corresponding brightness switching, and the brightness value of the target area is kept synchronous and consistent with the target value within a certain range, wherein the certain range means that the brightness value of the target area and the target value are allowed to have a short time delay and time error are asynchronous, namely the brightness value of the target area and the target value are kept synchronous and consistent within a negligible error time range, namely the brightness value of the target area is considered to be consistent with the target value.
When the display screen has a display fault, that is, the display screen is in an out-of-control disorder condition, essential information required to be displayed on other areas cannot be normally displayed, and similarly, the target area cannot be switched at a preset frequency as expected. At this time, the brightness value of the target area cannot be kept consistent with the target value, that is, the brightness value of the target area cannot be kept consistent with the target value in synchronization within the error time. Therefore, when the luminance value of the target area does not coincide with the target value, it is determined that there is a display failure of the display screen, such as a black screen failure, a white screen failure, an odd screen failure, a picture stop failure, or the like.
Optionally, the specific picture in the collecting unit 51 is switched to a black-and-white picture, and the target value in the first determining unit 52 includes a first preset brightness value and a second preset brightness value.
Optionally, if the specific frame is switched to a black-and-white frame, the first determining unit 52 includes:
and the first display fault determination module is used for determining that a display fault exists on the display screen if the brightness value of the target area is continuously smaller than or equal to a first preset brightness value, wherein the display fault is a black screen fault or a picture stop fault.
Optionally, if the specific frame is switched to a black-and-white frame, the first determining unit 52 includes:
and the second display fault determination module is used for determining that a display fault exists on the display screen if the brightness value of the target area is continuously greater than or equal to a second preset brightness value, wherein the display fault is a white screen fault or a picture stop fault.
Optionally, if the specific frame is switched to a black-and-white frame, the first determining unit 52 includes:
and the third display fault determination module is used for determining that a display fault exists on the display screen if the brightness value of the target area is continuously equal to a fixed value, and the fixed value is greater than the first preset brightness value and smaller than the second preset brightness value, wherein the display fault is a screen-blooming fault.
Optionally, if the specific frame is switched to a black-and-white frame, the first determining unit 52 includes:
and the fourth display fault determination module is used for determining that a display fault exists on the display screen if the brightness value of the target area continuously changes and the brightness value which is larger than the first preset brightness value and smaller than the second preset brightness value exists in the continuously changed brightness value, wherein the display fault is a screen-blooming fault.
Optionally, the detection apparatus for displaying a fault further includes a current monitoring unit and a second determination unit:
and the current monitoring unit is used for monitoring the current of the display screen in real time.
And the second judging unit is used for judging that the display screen has a display fault if the current exceeds a preset current range value.
In the embodiment of the invention, whether the display screen has the display fault can be detected in time only by acquiring and comparing the brightness value of the target area in real time, and the actual display content of the image of the whole screen does not need to be specifically analyzed, so that the display fault of the display screen can be detected more efficiently, and meanwhile, an additional high-resolution camera device does not need to be configured, so that the detection cost is greatly reduced.
Example five:
fig. 6 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 6, the terminal device 6 of this embodiment includes: a processor 60, a memory 61 and a computer program 62, such as a display failure detection method program, stored in said memory 61 and executable on said processor 60. The processor 60, when executing the computer program 62, implements the steps in the above-described respective display failure detection method embodiments, such as the steps S101 to S102 shown in fig. 1. Alternatively, the processor 60, when executing the computer program 62, implements the functions of the modules/units in the above-mentioned device embodiments, such as the functions of the modules 51 to 52 shown in fig. 5.
Illustratively, the computer program 62 may be partitioned into one or more modules/units that are stored in the memory 61 and executed by the processor 60 to implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 62 in the terminal device 6. For example, the computer program 62 may be divided into an acquisition unit and a first determination unit, each unit having the following specific functions:
the acquisition unit is used for acquiring the brightness value of a target area in real time, wherein the target area is an area which is reserved on the display screen and is used for switching a specific picture at a preset frequency.
And the first judging unit is used for judging that the display screen has display faults if the brightness value of the target area is inconsistent with the target value.
The terminal device 6 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal device may include, but is not limited to, a processor 60, a memory 61. Those skilled in the art will appreciate that fig. 6 is merely an example of a terminal device 6 and does not constitute a limitation of terminal device 6 and may include more or less components than those shown, or some components in combination, or different components, for example, the terminal device may also include input output devices, network access devices, buses, etc.
The Processor 60 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 61 may be an internal storage unit of the terminal device 6, such as a hard disk or a memory of the terminal device 6. The memory 61 may also be an external storage device of the terminal device 6, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the terminal device 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the terminal device 6. The memory 61 is used for storing the computer program and other programs and data required by the terminal device. The memory 61 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. For the specific working processes of the units and modules in the system, reference may be made to the corresponding processes in the foregoing method embodiments, which are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (7)
1. A method for detecting a display failure, comprising:
acquiring the brightness value of a target area in real time, wherein the target area is an area which is reserved on a display screen and is used for switching a specific picture at a preset frequency, the specific picture comprises a first picture with first color brightness information and a second picture with second color brightness information, and the method specifically comprises the following steps: acquiring a corresponding brightness value of the target area in each specific picture in real time;
if the brightness value of the target area is inconsistent with the target value, judging that a display fault exists in the display screen;
the specific picture is switched to be a black-and-white picture, and at the moment, the target value comprises a first preset brightness value and a second preset brightness value;
if the brightness value of the target area is inconsistent with the target value, determining that a display fault exists on the display screen, including:
if the brightness value of the target area is continuously equal to a fixed value, and the fixed value is larger than the first preset brightness value and smaller than the second preset brightness value, determining that a display fault exists on the display screen, wherein the display fault is a screen-blooming fault;
if the brightness value of the target area continuously changes and the brightness value which is larger than the first preset brightness value and smaller than the second preset brightness value exists in the continuously changed brightness value, judging that a display fault exists in the display screen, wherein the display fault is a screen-blooming fault.
2. The method according to claim 1, wherein the determining that the display screen has the display failure if the brightness value of the target area is not consistent with the target value comprises:
if the brightness value of the target area is continuously smaller than or equal to a first preset brightness value, judging that a display fault exists in the display screen, wherein the display fault is a black screen fault or a picture stop fault.
3. The method according to claim 1, wherein the determining that the display screen has the display failure if the brightness value of the target area is not consistent with the target value comprises:
if the brightness value of the target area is continuously larger than or equal to a second preset brightness value, judging that a display fault exists in the display screen, wherein the display fault is a white screen fault or a picture stop fault.
4. The detection method of a display failure according to any one of claims 1 to 3, characterized in that the method further comprises:
monitoring the current of the display screen in real time;
and if the current exceeds a preset current range value, judging that the display screen has a display fault.
5. A detection apparatus for displaying a fault, comprising:
the system comprises an acquisition unit and a processing unit, wherein the acquisition unit is used for acquiring the brightness value of a target area in real time, the target area is an area which is reserved on a display screen and is used for switching a specific picture at a preset frequency, the specific picture comprises a first picture with first color brightness information and a second picture with second color brightness information, and the acquisition unit specifically comprises: acquiring a corresponding brightness value of the target area in each specific picture in real time; the specific picture is switched to be a black-and-white picture, and at the moment, the target value comprises a first preset brightness value and a second preset brightness value;
the first judging unit is used for judging that the display screen has display faults if the brightness value of the target area is inconsistent with the target value;
the first determination unit includes:
a third display fault determination module, configured to determine that a display fault exists on the display screen if the brightness value of the target area is continuously equal to a fixed value, and the fixed value is greater than the first preset brightness value and smaller than the second preset brightness value, where the display fault is a screen splash fault;
and the fourth display fault determination module is used for determining that a display fault exists on the display screen if the brightness value of the target area continuously changes and the brightness value which is larger than the first preset brightness value and smaller than the second preset brightness value exists in the continuously changed brightness value, wherein the display fault is a screen-blooming fault.
6. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor realizes the steps of the method according to any of claims 1 to 4 when executing the computer program.
7. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811565119.8A CN109493775B (en) | 2018-12-20 | 2018-12-20 | Display fault detection method and device and terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811565119.8A CN109493775B (en) | 2018-12-20 | 2018-12-20 | Display fault detection method and device and terminal equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109493775A CN109493775A (en) | 2019-03-19 |
| CN109493775B true CN109493775B (en) | 2022-06-14 |
Family
ID=65711193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811565119.8A Active CN109493775B (en) | 2018-12-20 | 2018-12-20 | Display fault detection method and device and terminal equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109493775B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946859B (en) * | 2019-04-09 | 2022-02-01 | 深圳市华星光电半导体显示技术有限公司 | Backlight module detection method and device |
| CN110875008B (en) * | 2019-11-21 | 2022-06-10 | 武汉天马微电子有限公司 | Method for determining sub-pixel brightness, method and device for driving display panel |
| CN111722074B (en) * | 2020-06-03 | 2023-06-20 | 四川蓝景光电技术有限责任公司 | LED identification label fault positioning method, device and system |
| CN114879388B (en) * | 2021-02-05 | 2023-07-11 | 合肥统旭智慧科技有限公司 | Intelligent detection method for monitoring display picture of liquid crystal display |
| CN113686550B (en) * | 2021-08-23 | 2024-03-01 | 苏州市大创信息运用有限公司 | Fault detection method and device based on luminous coupling and difference judgment and electronic display equipment system |
| CN114638831B (en) * | 2022-05-18 | 2022-10-21 | 合肥宏晶半导体科技有限公司 | Image analysis method and device |
| CN116594813A (en) * | 2023-05-26 | 2023-08-15 | 江苏泽景汽车电子股份有限公司 | System restarting method and device, head-up display device and storage medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081895A (en) * | 2011-03-02 | 2011-06-01 | 厦门市华泰视通科技有限公司 | Light emitting diode (LED) display screen fault acquisition and analysis system |
| CN104575346A (en) * | 2015-01-28 | 2015-04-29 | 京东方科技集团股份有限公司 | Organic ELD (electroluminescent display) panel detection method and device |
| CN105609021A (en) * | 2015-12-20 | 2016-05-25 | 苏州长风航空电子有限公司 | Quick detection method for aviation display |
| CN106444115A (en) * | 2016-08-30 | 2017-02-22 | 重庆卓美华视光电有限公司 | Rebooting system and method for liquid crystal display advisement player |
| CN106782236A (en) * | 2016-11-30 | 2017-05-31 | 广州日滨科技发展有限公司 | Display device plays abnormal alarm method, device and display device |
| CN106782235A (en) * | 2016-11-30 | 2017-05-31 | 广州日滨科技发展有限公司 | The abnormal detection method of display screen, device and display device |
| US9711073B2 (en) * | 2014-04-02 | 2017-07-18 | Samsung Display Co., Ltd. | Display panel and method and system for correcting defects on the display panel |
| CN107025879A (en) * | 2016-01-14 | 2017-08-08 | 三星电子株式会社 | The self checking method of display system and the display system |
| CN108831357A (en) * | 2018-05-02 | 2018-11-16 | 广州市统云网络科技有限公司 | A kind of LED display working condition automated measurement &control method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5572444A (en) * | 1992-08-19 | 1996-11-05 | Mtl Systems, Inc. | Method and apparatus for automatic performance evaluation of electronic display devices |
| CN202085261U (en) * | 2010-12-14 | 2011-12-21 | 广东鑫程电子科技有限公司 | Intelligent video diagnosing and monitoring system |
| US9177393B2 (en) * | 2013-02-04 | 2015-11-03 | Qualcomm Incorporated | Mixed mode for frame buffer compression |
| CN105785207A (en) * | 2014-12-16 | 2016-07-20 | 王祖刚 | Blurred screen fault detection circuit board for displays |
-
2018
- 2018-12-20 CN CN201811565119.8A patent/CN109493775B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081895A (en) * | 2011-03-02 | 2011-06-01 | 厦门市华泰视通科技有限公司 | Light emitting diode (LED) display screen fault acquisition and analysis system |
| US9711073B2 (en) * | 2014-04-02 | 2017-07-18 | Samsung Display Co., Ltd. | Display panel and method and system for correcting defects on the display panel |
| CN104575346A (en) * | 2015-01-28 | 2015-04-29 | 京东方科技集团股份有限公司 | Organic ELD (electroluminescent display) panel detection method and device |
| CN105609021A (en) * | 2015-12-20 | 2016-05-25 | 苏州长风航空电子有限公司 | Quick detection method for aviation display |
| CN107025879A (en) * | 2016-01-14 | 2017-08-08 | 三星电子株式会社 | The self checking method of display system and the display system |
| CN106444115A (en) * | 2016-08-30 | 2017-02-22 | 重庆卓美华视光电有限公司 | Rebooting system and method for liquid crystal display advisement player |
| CN106782236A (en) * | 2016-11-30 | 2017-05-31 | 广州日滨科技发展有限公司 | Display device plays abnormal alarm method, device and display device |
| CN106782235A (en) * | 2016-11-30 | 2017-05-31 | 广州日滨科技发展有限公司 | The abnormal detection method of display screen, device and display device |
| CN108831357A (en) * | 2018-05-02 | 2018-11-16 | 广州市统云网络科技有限公司 | A kind of LED display working condition automated measurement &control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109493775A (en) | 2019-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109493775B (en) | Display fault detection method and device and terminal equipment | |
| EP3859708B1 (en) | Traffic light image processing method and device, and roadside device | |
| US11462139B2 (en) | Self-monitoring method of display and display | |
| CN105282303B (en) | A kind of control device of mobile terminal, control method and its mobile terminal | |
| CN105607782A (en) | Display method and display equipment | |
| CN101373589A (en) | Display control method used in a display apparatus, and display apparatus | |
| CN102629466A (en) | Adaptive correction method for color gray-scale image of display | |
| CN112466253B (en) | Display judgment method, device, equipment and storage medium | |
| CN112651367A (en) | Method for intelligently monitoring multi-dimensional aviation display screen | |
| US20050162516A1 (en) | Method and analysis tool for checking the functional suitability of video monitoring devices, as well as a measurement device for carrying out the method | |
| CN105100793A (en) | Television and television signal interface detection method | |
| CN205318809U (en) | Display device and display system | |
| TW200601198A (en) | Real-time display method for mixed signal image | |
| US20230335026A1 (en) | Self-monitoring method of display and display | |
| CN101834979A (en) | Video signal windowing response method and device thereof and video display system | |
| CN1489394A (en) | Display apparatus for detecting anormal picture signal and method thereof | |
| CN107342033B (en) | Method and equipment for detecting display picture | |
| CN115547274A (en) | Content analysis-based business display energy-saving method and system and readable storage medium | |
| CN102117940B (en) | Method for displaying electric quantity of battery and data processing apparatus | |
| CN109348288A (en) | A kind of processing method of video, device, storage medium and terminal | |
| CN210038378U (en) | Fault repair system of liquid crystal display | |
| CN105975234A (en) | Information superposition display system | |
| CN217135593U (en) | Video analysis early warning device | |
| KR101668805B1 (en) | Display operation state monitoring system of smartboard | |
| Muraoka et al. | A new instrument for measuring visual strain caused by video data terminal operations |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |